All posts by Seipasa

Mosquito verde en viña

Green leafhopper in vineyard: how to deal with this pest

Mosquito verde en viña

The detection of green leafhopper pests in vineyard has put wine growers on alert at a key moment of the grape season, just a few weeks after harvesting time begins. Several official bodies have warned of the substantial increase of mobile forms of green leafhopper in vineyard, as high population scenarios have appeared in which it is foreseeable to exceed the treatment thresholds.

In Spain, the Department of Plant Protection of the Generalitat Valenciana (Valencia) has issued warnings to producers in the central area of the province. The same occurs with the Network of Alert and Phytosanitary Information of the Junta de Andalucía  as several spots have been detected in the province of Malaga. In Toledo, ASAJA  has also confirmed the presence of this pest in vineyards in the district of Méntrida and La Torre de Esteban Hambrán. In these areas, caution is even greater after the devastating plague that farmers suffered last crop.

Green leafhopper in vineyard results in an insect between 2 and 3 mm in length. It is placed on the underside of leaves and is used to fly at the slightest movement. Green leafhopper attacks the nerves of leaves, as it feeds on the plant sap. Its effect is extremely detrimental because it stops the vegetative development and, consequently, the fruit ripening. Visually, the most evident consequence is the marginal desiccation of leaves, which turn yellow.

The most intense presence of green leafhopper in vineyard usually occurs during summer because of high temperatures, warm and dry weather conditions. Economic losses for growers can be significant because the effects can be extended in the post-attack season, with a possible decrease in sprout vigor and crop yield.

Treatments for green leafhopper in vineyard

The scenario caused by the proliferation of green leafhopper in vineyard (Empoasca vitis Goethe) in Spain has also occurred in Europe, as a substantial increase in the population of cicadellidae has been observed in recent years. Seipasa has produced Pirecris®, a natural biopesticide showing an excellent performance in the control of several species of cicadellidae in vineyard.

The active ingredient of Pirecris® guarantees its efficacy and knock-down effect. In addition, the formulation of a high technology product has allowed Seipasa to obtain the product, guaranteeing a ‘green’ profile based on a plant matrix that enhances the action.

Pirecris® efficacy against the green leafhopper has been tested through more than 18 field trials conducted in several countries. One of them is the one carried out in the south of France during the summer of 2014. For this trial, a complete randomized block with 4 repetitions and 5 treatments was unfolded: an untreated control, Pirecris at 3 different doses (1; 1.5 and 2l / ha) and a reference chemical pyrethroid (0.125 l / ha). Two applications (A and B) were performed: the first one, on July 2014 and the second 7 days later. The number of larvae in 50 inner leaves was evaluated at 3 and 7 days after each application.

As shown in figure 1, the first application of Pirecris® significantly reduced E.vitis populations. These populations were lower than the ones in the control treatment for all doses tested.

Mosquito verde en viña

Figure 1.- Evolution of the number of E.vitis larvae found in 50 leaves. A: first application; B: second application. Samples made at 0, 3 and 7 days after each application.

Green leafhopper populations remained low in all treatments with Pirecris during subsequent samplings, especially after the second application. The results are similar to those obtained by the reference treatment. The efficacies obtained in this trial were high (about 90%), especially with the medium and high doses (1.5 and 2 l / ha), surpassing those obtained by the reference pyrethroid (see figure 2).

Mosquito verde en viña

Figure 2.- Evaluation of the Abbott efficacy of Pirecris and the reference pyrethroids against E.vitis in vineyard corresponding to samples taken at 0, 3 and 7 days after each application.

The results prove that Pirecris® is a solid and efficient alternative for the treatment of the green leafhopper in the vineyard. This solution, 100% natural and free of chemical residues, is fully aligned with the needs of producers and consumers towards a rational, sustainable and environmentally friendly agriculture.

Enfermedades de madera de la vid

Strategies for grapevine trunk diseases

 

Enfermedades de madera de la vid

Grapevine trunk diseases are among the most serious problems affecting crops at the present time. When summer comes, cultivation of grapevine enters a decisive period. Preserving it in optimal conditons is fundamental, as it results in a pivotal element supporting many local and regional economies.

This is the reason why studies on grapevine trunk diseases proliferate at a key moment for the sector. Farmers are struggling to look after the current harvest, but cannot overlook the following season. In July, the city of Reims (France) hosts an international conference with a large group of experts on this subject.

Grapevine trunk diseases have become more evident in the last decade because of the advances in knowledge concerning fungal species taking part in the process of wood deterioration.

Intensified production, the aging of vineyards and the long period of time that may elapse between the penetration of fungi and the display of the first symptoms (in some cases, grapevine trunk diseases may already exist in those seedlings coming from the plant nursery) are factors that may explain why farmers are increasingly being affected by these diseases.

The absence of registered fungicidal active substances capable of dealing with these pathogens leads to reinforce preventive measures to restrain fungi from entering or penetrating wood. Practices and knowledge developed for years suggest farmers to use a pruning system that minimizes cuts, since the transmission of grapevine trunk diseases is produced through pruning wounds.

In addition to avoiding thick wounds, not only do cultural practices recommend pruning in dry weather conditions but it is also important to let a few days pass after an episode of rainfall.

Advances in grapevine trunk diseases also point to use hot-water treatment as a method to reduce infections caused by wood fungi in propagating material. Application of hot-water treatment has been approached by David Gramaje, researcher of the Instituto de Ciencias de la Vid y el Vino (ICVV) at the international meeting promoted by Phytoma in March 2017.

Grapevine trunk diseases: activation of the defense system

Preventive actions also recommend using treatments capable of stimulating plant’s defense system. Superbrotal is a natural solution produced by Seipasa. This product performs as an activator of the processes involved in sprouting and plant structuring. Superbrotal stimulates the defense mechanisms due to its main compound, which induces the synthesis of those proteins involved in the immune system.

Not only does Superbrotal activate self-defenses, but it also strengthens the vascular bundles of the plant, generating a better translocation of nutrients in favor and against the gravitational gradient. It results in a balanced crop, with a powerful, structured and efficient plant development. Crops gain in size and foliar architecture, improving its ability to overcome stresses.

To set an example, there is a trial conducted by Seipasa in grapevine between 2014 and 2016 (see figure 1). The results show the inducing effect of Superbrotal. The trial was performed on a plot where vascular diseases had been experienced before. After the first campaign in 2014, disease incidence increased in the control area. However, as observed in figure 1, Superbrotal was able to improve sap flow by reducing the percentage of affected vineyards in the following campaigns (2015 and 2016).

Figure 1.- Incidence of grapevine trunk disease.

Grapevine trunk disease

Stimulation of the defense system helps to prevent stresses. Prevention may become a suitable strategy to avoid the penetration or progression of fungal diseases.

Bioestimuante radicular

Root biostimulant in spring vegetable crops

Bioestimuante radicular

Applying a root biostimulant in spring vegetables crops for a powerful development results in a pivotal factor to ensure an optimum yield.

Crops must cope with a wide range of unfavorable situations so as to achieve optimum performance. Together with pests and diseases, and within the context of climate change, there are more and more situations of environmental stress occurring. These factors lead to production decline, both in quality and quantity. Thus, regulating plant growth ends in a highly important factor, which will mark the productivity of crops.

In crops, a powerful starting is always synonymous with safe harvesting. Therefore, the treatments applied in initial stages play an essential role in the later development. With the calendar well into the month of May, the last frosts of spring have been left behind. The weeks that arrive ahead will take us into summer.

Thus, hot days with many hours of sunshine begin to become common, creating a favorable scenario to obtain the maximum yield in summer crops like tomato, pepper, eggplant, melon or watermelon. The cultivation of vegetables in spring has begun during winter months by preparing the seedbeds. Later, in spring, we proceed to field transplantation.

In southern regions like Almeria, this calendar is slightly modified when it comes to greenhouse plantations. Seedbeds have been prepared in July, and transplantation is delayed until the months of August-September.

Irrespective of the calendar, the application of a root biostimulant is well recommended within the first stages of cultivation. By using it, a broad, dense and branched root development is promoted in the plant.

A better plant development results in crops being more tolerant to the most unfavorable environmental conditions. Crops are also more capable of resisting disease entry. In addition, it allows better absorption of nutrients, so that apart from achieving better yields (and fewer losses), the quality of the crop will be higher.

Root biostimulant: growth and nutrient uptake

Seiland is a biostimulant to be applied at the time of transplantation, just within the first stage of cultivation in the field. The solution produced by Seipasa contains a mixture of microorganisms colonizing the ecological niche that roots occupy and creating a biological barrier that is beneficial for crops.

Seiland is high in organic matter. It provides carbon and nitrogen to the soil. These elements are needed for the installation and development of microorganisms. Its action allows to colonize the root area so as to protect it from being attack by pathogens.

The microorganisms of Seiland provide substances activating defense mechanisms, as well as elements and substances beneficial to plant development. The application of Seiland also allows to stimulate the activity of the microbial flora of the soil. Therefore, nutrients are more accessible to plants, allowing a more efficient use of fertilizers.

The application of a root biostimulant in spring vegetable crops is especially visible from initial stages. Not only does this process contribute to a correct plant development, but it also helps the plant to complete its cycle properly. It means not being conditioned by the different stresses in initial stages, when crops are more vulnerable.

calcio en los cultivos

Calcium in crops: why proper assimilation is important

calcio en los cultivos

Calcium in crops plays a key role in agricultural development. Its existence guarantees firmer fruits. Agricultural calcium is necessary not only in structural strengthening of walls but also in the elasticity of the vegetal tissue. It is essential to have resistant and healthy plants.

Calcium shortage severely affects the quality of fruits and crop yield. This is the reason why an inappropriate assimilation can cause losses in the market value. Fortunately, there are treatments to improve calcium assimilation in crops. Its application is markedly necessary at the beginning of spring, when climatic conditions such as thermal amplitude between day and night can subject plants to stressful situations.

Calcium in crops is transported internally by xylem, but calcium has low mobility within the plant. Translocation results in a difficult process, since only a small percentage of calcium is translocated to the fruits from the surrounding leaves.

There are many climatic factors affecting calcium assimilation in crops. High temperatures on sunny days, wet and dry winds, and low relative humidity may become factors promoting high levels of transpiration. When this transpiration stream is too high towards the foliar organs, contribution of calcium to the fruit is restricted. In other words, for calcium is more difficult to reach those organs with low transpiration rate.

As we saw in an earlier entry, calcium deficiency in crops is observed in alterations such as BER (blossom end rot) in tomato and pepper. In strawberry or lettuce symptoms are perceived at the end of the expanding leaves (tip burn).

Guaranteeing contribution of calcium in crops

By evaluating calcium status in plants, it is possible to diagnose disorders like BER. In order to prevent such deficiencies, Seipasa has developed the Calcisei line of products. These products, formulated with calcium, play a pivotal role in crop development. Besides contributing to prevent deficiencies such as BER, tip burn or bitter pit in tomato and apple, the Calcisei line is specifically prepared for the structural strengthening of cell walls and membranes, as well as the management of soils with high content of salt.

Within this line, Calimax is a treatment designed to prevent calcium deficiencies in crops while confronting physiopathies. Calimax improves soil structure, promotes optimal root development and regulates imbalances due to lack of calcium.

Guadal Ca has been produced to avoid problems of internal decay and cracked fruits, as well as to confront apical rot, tip burn in horticultural crops. Lack of calcium usually concentrates on young leaves and fruits, since these are the organs having major transpiration difficulties. Guadal Ca is especially recommended for foliar applications in the second half of the crop cycle given the rapid absorption and total safety.

Apart from the contribution of calcium, the organic matter content of the Calcisei line brings significant benefits to the crop, especially in the post-harvest quality.

Soil correctors

Farmers are aware of how important is to have calcium in soils. Calcium deficiencies in plants can be observed in soils where there is an excess of nitrogen fertilizer, in substrates with alkaline pH, with episodes of water stress or with salt excess, among other factors. Within the Calcisei line, Miñosal is a corrector of saline and saline-sodic soils. It can be used both in soils having salinity problems and in areas where irrigation water quality makes it necessary. 

See SEIPASA Products

Control de malas hierbas en agricultura

Weed control in extensive agriculture

Control de malas hierbas en agricultura

Weed control in extensive agriculture results in an essential task to ensure a better crop yield. World cereal production in 2016 is 2.600 million tonnes. The latest FAO report forecasts that production will exceed 7.9 million tonnes (+ 0.3%) as predicted in February. Figures for the 2016/17 season exceed the record production obtained in 2014/2015 by more than one point, according to the International Grains Council.

In Spain, data from the Ministry of Agriculture, Fishing, Food and Environment indicate that an average of 6 million hectares of cereals are grown. This is the sector with greater territorial base and with a distribution throughout the whole territory. The Ministry considers that 42.8% of production is barley while 30.1% corresponds to soft wheat.

Because of its role in diet and food production, cereal farming is a key element on the board of the world economy. Due to its increasing importance, it is necessary to produce instruments for weed control in extensive agriculture, given its immediate impact on crop production and yield levels.

Seipasa a company specialized in natural solutions for agriculture with zero residues, has developed tools to guarantee weed control in extensive agriculture. Kynetic4 is a biostimulant produced to maximize the action of herbicides. It is based on the action of physiological intermediates and amino acids of plant origin. Being added to a herbicide program, Kynetic4 enhances absorption, taking action as a synergist and activator of herbicides, fungicides and foliar fertilizers.

Kynetic4’s ability to activate plant’s physiological processes not only results in increasing vegetative development but it also makes an improvement of the final production in extensive crops and cereals.

Reduction of stress caused by herbicides

Kynetic4 also reduces stress caused by herbicides. When herbicides are applied, crops are subjected to abiotic stress. The plant suffers from metabolic wear and requires an extraordinary energy supply to recover. Kynetic4 acts as a supplement to overcome episodes of higher stress.

An example of how Kynetic4 performs is observed in the trial conducted in Blairville (France). It was based on the efficacy of the product within a herbicide program. The results obtained revealed that the efficacy of Kynetic4 together with a herbicide program was 94.5%, compared to 90.4% of a herbicide program without any enhancer being applied. Other weed control programs were also measured, but lower efficacies were observed.

Yield increase with each of the treatments was also evaluated in this trial. As shown in figure 1, the best results were obtained when Kynetic4 was applied.

Figure 1.- Harvest evaluation with each of the treatments

Control de malas hierbas en agricultura

Source: Redebel

Weed control in sugar beet farming

Applying Kynetic4 together with herbicides in sugar beet farming allows to obtain higher efficacies in weed control in extensive agriculture. Global production of sugar beet in the 2016/17 season is forecasted at 171 million tonnes, according to International Sugar Organization Brazil, India and the EU are the main producers. The importance of this crop requires the implementation of tools ensuring optimum performance.

Seipasa researched on the supply of Kynetic4 together with a herbicide program on sugar beet farming. The test, conducted in Belgium (Faimes), aimed to assess the benefits of a normal program of herbicide treatments together with Seipasa’s biostimulants. The purpose was to enhance the herbicide effect at the time the crop received biostimulation in its growth. The test was also applied to reduce the stress effect caused by chemical elements.

Four post-emergence applications of the usual herbicide program used in the region were carried out. The active ingredients of the 3 products were ethofumesate + fenmedifam + desmedipham; metamitron and clomazone.

Also, 3 products were included to evaluate compared effectiveness not only on weed control but also on the effects they could produce in the crop. Two additional evaluations were performed during the time elapsed between applications. An addition, a third evaluation was conducted 27 days after the last application of the 3 herbicide programs.

Kynetic4 shows similar performance compared to the reference product, but better than using animal amino acids. Efficacy of the combined use can be observed in figure 2. Kynetic4 in sugar beet cultivation improves the assimilation of treatments and stimulates the development of the crop, producing better and higher yields.

Figure 2.- Efficacies obtained by herbicide programs plus improvement products.

control de malas hierbas en agricultura

Sources Redebel

SEIPASA Product

tratamientos del olivo

Treatments for olive trees after winter

Tratamientos-para-el-olivo

Treatments for olive trees after winter are widely recognized to prevent diseases and to obtain a homogenous harvest each season, thus forgetting the feared alternation of production. Preparatory treatments are applied at an early stage and aim to adapt the olive tree to achieve a good flowering.

The months of January and February are suitable to apply pruning work at the olive tree, allowing to set a proper structure within the production of the following campaign.

Although depending on climate and varieties, towards the end of March the flower buds have already begun to appear. In this second phase, the buds gradually thicken until the generation of the floral bud begins to be observed. Henceforth, the plant will continue its development with the formation of the cluster.

At this point, treatments for olive trees after winter recommend the use of products such as Kynetic4. Its use allows to enhance the flowering of the crop, an essential step to assure the harvest of the following year. Kynetic4 produces an energetic stimulation at times of increased crop demand. Its application contributes to obtain a better flowering and the following setting.

Treatments for olive trees: fungal diseases

At this stage of the harvest, it is utterly necessary to pay attention to the possible occurrence of fungal diseases such as repilo. Treatments for olive trees after winter also include the application of preventive products based on copper.

The copper placed on the leaf creates a protective barrier that precludes the spore from germinating when it appears. The use of Glucosei favors the creation of this protective barrier and stimulates the generation of self-defenses. Due to its formulation, Glucosei minimizes the possible negative effects caused by the copper on the soil.

March results a time of the year when the latest winter rains and the earliest of the spring may become commonplace. The use of Glucosei also helps to ensure that crops are protected when spring budding occurs.

Micronutrient correctors

Specialists also recommend the application of a micronutrient corrector as a treatment for olive tres after winter. The plant assimilates them during the budding, overcoming any shortage of micronutrients that may occur and reinforcing the subsequent phase of flowering. Based on a combination of zinc, manganese, iron, boron and molybdenum, Seipafol Mix has been specifically designed to beat any shortage of micronutrients that may occur during the different stages of plant growth.

Not only does the use of natural solutions bring greater energy to the vegetable, but It also contributes to maintaining the balance of the agricultural ecosystem, respecting sustainability and revitalizing the environment. Thus, besides contributing to the development of the crop, natural treatments help to guarantee the conditions in which both olive trees and fields are left in proper conditions for future campaigns.

SEIPASA Product

Fertilizers for tomato fattening

Fertilizers for tomato fattening

 

Best fertilizers for tomato fattening contain organic matter, potassium, fulvic and humic acids, and microelements.

Fertilizante para engorde de tomate

Achieving the highest harvest percentage with proper size and color is the goal of all farmers. This is very important to market the products. Hence the importance of assessing the application, at the appropriate time and following the needs of the plant, of fertilizers for tomato fattening and, where appropriate, specialized biostimulants.

When the fruit setting phase, the plant requires an extra contribution of potassium. Deficiency of this element can lead to an irregular maturation, preventing the full formation of the fruits in many cases.

Symptoms of potassium deficiency can be observed by small fruits with non-uniform coloration being produced, with yellow spots in areas that do not mature enough. It also leaves weak stalks, chlorosis and scorched edges on the leaves, poor resistance to pests and diseases, as well as increased susceptibility to frost and droughts.

Fertilizers for tomato fattening: potassium and much more

The relationship between potassium, fruit growth and maturation shows the importance of this macro-element in the quality of crop production. However, other factors must be taken into account to ensure the size, color and flavor of the tomato, without harming the characteristics of each variety.

Besides the need for a nutrient balance, with an adequate balance of other macro-elements and micro-elements such as Boron, Molybdenum, Calcium or Magnesium, environmental factors such as temperature must be taken into account. Between 24 and 28 degrees (Celsius) or solar lighting are  optimal for maturation. The characteristics of the substrate significantly influence the process, since this is the natural source of nutrients.

Fertilizers for tomato fattening: the importance of the substrate

The most demanding agricultural producers look beyond the specific application of mineral nutrition. They pefer to ensure not only the size of the fruits in that campaign, but also the richness of the soil that gives them greater guarantee of success for the next crops. What is key is to take advantage of all nutrients in the substrate while maintaining the balance of the substrate for short and long term benefit.

The most suitable tomato fattening fertilizers are those combinig organic matter with high content of potassium. Some very specialized references even contribute fulvic and humic acids, vitamins and microelements. This is the case of Terrasei Fruit, from SEIPASA.

The role of organic matter in tomato fattening fertilizers

Potassium fertilizers with high content of organic material such as Terrasei Fruit, significantly reduce potassium fixation inside the clays and its leaching loss in sandy soils. They increase both the concentration of potassium available and in solution in the soil. Its use favors the structure of the substrate, but also improves the absorption of potassium provided by conventional fertilizers.

Fulvic and humic acids contained in this reference are essential to regulate the physical and chemical properties of the soil and also to favor the development of beneficial microorganisms. This fertilizer has an immediate and slow release effect, helping to provide nutrients gradually.

Early maturation by applying fertilizers for tomato fattening

With the same conditions of temperature and illumination, it is possible to obtain a greater precocity and organoleptic quality in the process of maturation. This is because of fertilizers for tomato fattening. When it comes to Terrasei Fruit, results of the studies reveal considerable advance in maturation. As shown in figure 1 (corresponding to an experiment in which four applications of the product were carried out from fruit setting to harvesting) harvesting of the first fruits after maturation (days to first pick) was advanced 21 days.

Figure 1.- Days to first pick.

Fertilizers for tomato fattening

Fertilizers for tomato fattening: performance, size and color

Apart from favoring fruit maturation, field studies confirm that Terrasei Fruit ensures high performance (see figure 2) and a marked improvement in size (see figure 3), color (see figure 4), plant growth, length root and sugar content. Additional test data can be found here.

Figure 2.- Performance

Fertilizers for tomato fattening

Figure 3.- Fruit size

Fertilizers for tomato fattening

Figure 4.- Fruit color (%)

Fertilizers for tomato fattening

Advantages of liquid format in tomato fattening fertilizers

Organo-mineral fertilizers in liquid form such as Terrasei Fruit reach deeper soil profile compared to solid organic matter.

Biostimulants for tomato maturation and fattening

Biostimulants result in a specialized option so as to induce maturation and fattening of fruits and, depending on the characteristics of the crop and needs, could be combined with fertilization.

A reference specially addressed to this purpose, foliar and root application, is Sweetsei. This is a biostimulant of rapid assimilation. Besides advancing maturation, it increases fruit size while achieving uniformity and excellent color. Furthermore, it obtains greater elasticity, hydration and firmness due to an organic polymer incorporated in its composition. In the same way, it improves fruit behavior in post-harvest and favors the formation of sugars, improving the index of Brix degrees.

Seipasa produces natural treatments for agriculture with zero residues. Should you need more information on tomato fattening products, you can access it through these links: http://www.seipasa.com/nutricionales/terrasei-engorde/ and http://en.seipasa.com/biostimulants/sweetsei/. You can also consult SEIPAS’s experts at http://en.seipasa.com/request/request-information/terrasei-engorde/

SEIPASA Product

Biostimulants for the zucchini setting

Biostimulants for the zucchini setting that increase quality and production by minimizing the use of hormones

* Avoid fruit malformation

* Influence on flowering and fertility

* Minimizing the use of hormones

* Greener and brighter fruits

Biostimulants for the zucchini setting. Flowers

The process of fruit setting in zucchini cultivation is especially complicated compared to other horticultural crops because the opening and development of male and female flowers do not coincide. Male flowers usually appear earlier.

As this is a crucial phase to achieve an abundant and quality harvest, farmers often resort to hormonal treatments to induce the development of fruits.

However, both the social demand and the evolution in the regulation of products are increasingly directed at trying to dispense with any chemical in plant foods, thus prioritizing the use of natural processes and substances. The market requires minimizing the use of hormones and synthetic products.

In this context, the use of specialized biostimulants for the zucchini setting and even their combination with hormonal treatments in low proportions has been shown an efficient alternative to obtain high productivity and, most importantly, quality. KYNETIC4 is one of the biostimulants that achieve high levels of fruit setting with top quality crops.

Biostimulants for the zucchini setting that avoid fruit malformation

A bad process of zucchini setting can produce malformations in the fruits such as the so-called sucking, crooked or low-developed fruits.

Crooked fruits: 

Zucchinis that bend by the centre due to a bad setting of the fruit

Low-developed fruits:

Fruits that stop their development in an early stage and that finally abort. Possible causes are depletion of the plant, lack of vegetative vigor or phytosanitary treatments.

Sucked fruits: 

Fruits that do not develop evenly and are usually sucked by the apical limb. Precisely this defect has been traditionally attributed to hormonal treatment; However, there is a conjunction of factors that can provoke it, since it usually occurs in the moments of plant stress (scarcity or excess humidity, dry winds, abrupt climatological changes or phytosanitary treatments). When pollination is natural, the fruit is better able to withstand stress, and this problem does not occur.

Products for the zucchini setting that give the plant the energy boost it needs to overcome situations of plant stress are fundamental to avoid any type of malformations of the fruits.

roductos para el cuajado en calabacín que, al mismo tiempo, otorguen a la planta el impulso energético que necesita para superar las situaciones de estrés vegetal se hacen fundamentales para evitar cualquier tipo de malformaciones de los frutos.

Influence on flowering and fertility of biostimulants for the zucchini setting

Since the development of the male and female flowers of the zucchini crop do not match, it is very important to achieve sufficient quantities of flowers and, more importantly, with abundant pollen and high fertility. If a natural pollination is carried out, this allows the pollinating insects to carry out their work more successfully.

Specialized biostimulants such as KYNETIC4 are specially designed to increase flowering, pollen fertility and fruit setting levels. In addition, it is an essential solution to deal with all types of plant stress conditions.

Biostimulants for zucchini setting: Minimizing the use of hormones

The constant demand for increased yields and quality of crops and the need to reduce the use of hormones led SEIPASA to be involved in studies aimed at the organic activation of plants in the cultivation of zucchini decreasing the use of hormonal products. The KYNETIC4 biostimulant was used for this purpose.

LINK TO THE TRIAL “Effect of KYNETIC4 on zucchini quality, fruit set and yield”: http://en.seipasa.com/trials/kynetic4-zucchini/

For this trial, four different treatments were proposed: T1, corresponding to the usual application of two hormones (ANA + ANA amide); T2, with the application in irrigation of KYNETIC4; T3, with the foliar application of KYNETIC4; and, finally, T4, which consists of combined applications of the hormone and KYNETIC4, reducing the amount of hormone used in T1 by almost 60%.

According to the results of the study, it is possible to reduce the use of hormonal products (T4) up to 60%, increasing the average weight of the marketable fruit with respect to the single use of hormones. (Graphic 1)

Biostimulants for the zucchini setting. Weight

There is also a significant improvement in the quality of the harvest: In the crop with combined application (T4), a higher quantity of fruits of the first quality and less amount of second and ‘rejects’ were obtained. (Graphic 2)

Biostimulants for the zucchini setting. Quality

Greener and brighter fruits with KYNETIC4, biostimulant for the zucchini setting

Regarding the organoleptic parameters analyzed, the resulting data confirm the obtaining of greener and lighter fruits with the combined use of KYNETIC4 and ANA + ANA amide.

Bioestimulantes para el cuaje en calabacín. Frutos más verdes y luminosos.

If you want more information about this product for the zucchini setting you can access it through this link: http://en.seipasa.com/biostimulants/kynetic4/ or consulting the SEIPASA experts: http://en.seipasa.com/request/request-information/kynetic4/

SEIPASA Product

Abonos orgánicos para olivos. Campos de Andalucía

Organic fertilizers for olive trees

Organic fertilizers for olive trees. Advantages versus manure and conventional fertilizers

Organic fertilizers for olive trees

The organic fertilizers for olive trees are an essential element for the soil health of these crops. The advantages of an organic bottom fertilizer, used in the first cycles, versus manure or conventional fertilizers, are not only observed in the most immediate campaign, but also in the plant health and the quality of the long-term production.

Although nutrients are naturally found in the substrate, they are not replenished fast enough to maintain soil fertility. Hence, it is necessary to make additional contributions. But which fertilizer to use?

Before choosing one or the other to include in the subscriber plan it is advisable to carry out a soil and leaf analysis to know the exact needs of each crop. Some parameters such as soil characteristics and composition, type of plant, age, agricultural practices, water status or planting density should be taken into account.

Nowadays, one of the most advanced organic formulations for the basal dressing is Organitro, from SEIPASA, rich in nitrogen and 100% organic.

Organic fertilizers for olive trees vs. dung

– The dung contains high humidity and is not stable. Thus, in contrast to the dung variability, the complete organic fertilizers guarantee the fertilizer units (N, F, K).

– Dung can contain seeds of weeds or pathogens that can be transferred to the crop.

– If some dungs rich in macronutrients such as nitrogen are not mixed with other poorer or plant remains, they tend to be imbalanced despite composting.

– In organic farming, many dungs are not allowed: Those from intensive farms may be contaminated with residues of pesticides, antibiotics or heavy metals.

Organic fertilizers for olive trees vs. conventional fertilizers

– Conventional mineral fertilizer gives the plant nutrients available immediately, but it is easier to apply in excess or deficiency. It does not amend the soil, simply feeds the vegetable.

– The organic fertilizer is less aggressive to the soil. Conventional can salinize the substrate. It can increase toxic salts if applied in large quantities.

– With the use of chemical fertilizers there is a risk of contamination of the underground and surrounding water.

– The application of synthetic fertilizers can also lead to degradation of soil life by eliminating microorganisms useful for plant nutrition.

– Applying organic fertilizers allows the action of the soil microorganisms to degrade the fertilizer to form water soluble compounds, which the plant takes advantage of.

– Organic fertilization also favors the proliferation of bacteria and fungi that benefit the soil and help the best use of nutrients by the plant.

– In short, they improve the structure of the substrate, allow carbon fixation and favor the ability of the crop to retain nutrients and water.

Organic fertilizers of reference for olive trees

Organic fertilizers for olive treesFor the basal dressing, one of the best options is the complete fertilizer with Organitro.

The high organic matter content of this fertilizer substantially improves the physical, chemical and biological properties of the soil.

It is easy to handle in the application thanks to the pelletizing. It is distributed with great uniformity in the soil, allowing an immediate availability when disintegrating in only five minutes in the presence of water and dissolving completely in no more than four hours.  It achieves a maximum valuation of the supplied fertilizer units.

It has a dual nutritional effect: the combination of fast-release nutrients and elements that ensure fertility in the medium term after undergoing mineralization processes. It allows the formation of organo-metallic complexes. Thus, it stabilizes micronutrients of the soil that would otherwise not be usable.

Organitro increases the cation exchange capacity and acts as a buffering agent by reducing the tendency to a sudden change in soil pH when acid or alkaline reaction substances are applied.

To have an oxygenated soil, with good structure and balanced in its nutrients is the ideal thing so that the farmer can obtain good yields, and references like this are basic.

Organic solid and liquid fertilizers

In addition to Organitro, belonging to the Seivital line (solid organic), SEIPASA offers another type of 100% organic fertilizers, guaranteed with the corresponding ecological certificate, and ideal for integrated production.

The liquid organic fertilizers of the line Multisei are also placed as regenerative models of soils for their ability to balance the nutrient substrate, improving its structure, its composition and microbial activity.

They promote the formation of aggregates in the soil that improve the friability of the land facilitating agricultural work and avoiding flooding and root suffocation.

They incorporate in their formulation raw materials of vegetal origin with a high degree of refinement that avoid problems of precipitates and seals in systems of drip irrigation.

The Terrasei line is the answer of SEIPASA to the nutritional needs of crops in different phenological states, since it combines mineral nutrition and the energy and soil structure of organic fertilization.

Organic fertilizers company

SEIPASA is a leader company in R+D+i research, both in phytosanitary products and in organic fertilization, making organic fertilizers available to farmers to improve the yield of olive and other crops.

If you want more information about these products you can access it through this link: http://en.seipasa.com or requesting it through the mail: mailto:consulta@seipasa.com.

See SEIPASA Products

Insecticidas naturales contra la mosca blanca en tomate. El poder de Nakar.

Natural insecticides against whiteflies on Tomato Plants

Whitefly pests are causing serious problems in the Spanish tomato crops, especially due to the transmission of viruses such as Tomato Yellow Leaf Curl Virus (TYLCV). Hence the importance of combating this problem through an integrated management that includes effective natural insecticides against whitefly on tomato plants.

In order to keep the whitefly population at bay, integrated pest management is the best method of action. Its objective is the rational and efficient control of pests and diseases, minimizing the amount of residues in the products to be harvested. It is necessary combine cultural measures, biological control and phytosanitary treatments, with priority of natural ones versus chemicals.

Farmers do not find it easy to find specialized, effective natural formulations that do not leave residues in the crop, but they exist.

The best natural insecticides against whiteflies on tomato plants

Natural insecticides against whiteflies on Tomato Plants

Among all the natural insecticides against whiteflies on tomato plants, Nakar product stands out given the good results it has demonstrated in trials and in commercial application, and given its high specialization. It is a bioinsecticide that presents excellent contact control of soft shell insects in all stages of development and especially of the whitefly in tomato.

Its state-of-the-art formulation gives it the ability to penetrate and fragment the lipoprotein matrix of insect cell membranes. The disruption of the membrane causes the evacuation of the cellular contents causing the dehydration and death of the insects.

Given its natural origin and its compatibility with the action of the natural predators and parasitoids of the whitefly is an ideal tool for Integrated Pest Management (IPM), so that the insecticide’s power is combined with the biological control action.

Along the same lines, Pirecris, an insecticide based on natural pyrethrins, is made with co-formulants of botanical origin, totally natural, so it does not use Piperonil Peroxide (PBO) as synergist. Its formula is patented.

Advantages of the natural insecticides against the whiteflies on tomato plants

1.- No security deadlines

These natural insecticides do not have safety period. In fact, both Pirecris and Nakar can be applied even the day before harvesting.

 2.- Resistance management

Optimum result in resistance management strategies.

3.- Efficacy in all biological stages of insects

Although their efficacy develops over all biological stages of insects, the insects are more vulnerable to the effects of the active substance in its immature stages of development and non-flying phases.

 4.- Wetting effect

The fact that whitefly populations are placed on the underside of the leaves conditions the effectiveness of the products that act by contact, so it is advisable to use wetters.

However, Nakar has achieved a potentiating and wetting effect, so that it improves adhesion in spray applications. Moreover, it increases the adhesion of other treatments because it decreases the surface tension of the water and increases the contact surface, as well as the contact time between the pathogen and the applied active material.

 5.- Avoid molasses and bold in the crops

The whitefly secretes a species of molasses that hinders the growth of the plant because it interferes with photosynthesis and causes less vigor and, therefore, a worse quality in the fruits. This molasses favors the attack of the fungus that causes the bold in leaves, flowers and fruits, and also reduces the photosynthetic capacity of the vegetable and its respiration, depreciating the quality of the harvest, but also hindering the penetration of phytosanitary treatments.

Besides its potential as a natural insecticide, Nakar contributes to the cleaning of these molasses produced by attacks of sucking insects such as the whiteflies, in a way that avoids the fatal spread of fungi. In the same way, Nakar cleans the bold formed by the fungi.

6.- Efficiency comparable to chemicals

The different tests carried out with the bio-insecticide Nakar (SEIPASA) have shown that the efficacy of this natural insecticide equals the reference chemical in whitefly control, with the added value of not leaving residues and being suitable for integrated and ecological production.

In the last study carried out by researchers at the Technological Park of Almería (Tecnova) on integrated control of whitefly on greenhouse tomato, results confirmed the high efficiency of Nakar on immature and adult populations of this pest, cutting off their biological reproduction.

The synergy of this product with the action of Pirecris was conclusive in the control of the whitefly Bemisia tabaci.

If you need more information on the natural insecticides Nakar and Pirecris, please request it through the e-mail: consulta@seipasa.com.

Natural insecticides against whiteflies on Tomato Plants

If you need more information on the natural insecticides Nakar and Pirecris, please request it through the e-mail: consulta@seipasa.com.

See SEIPASA Products