Tag Archives: crops

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

Cochinilla en plátano

New classification for dangerous pests, priority and quarantine pests

Priority pests will be tied to stricter rules; more EU Member States may receive funding to eliminate them

One more step, the second to last already, towards the entry into force of new rules on protective measures against plant pests. The EU Council has approved the new regulations and the only measure left is the green light by European Parliament. Its entry into force is planned for early 2017 and may be applied in three years from that date.

According to the new law on plant health, which will replace the current Directive (2000/29 / EC), the most dangerous pests (quarantine) will be better defined and divided into “priority epidemics” and “other quarantine pests”.

This  way, priority pests “will be subject to stricter eradication and public information rules while more Member States will be able to receive greater financial support from Brussels to eliminate them”, said the European Council in a statemente.

The plant health passport

Pests. Aphid on pear

Among the measures intended to boost supervision and promote early eradication of pests is the extension, simplification and harmonization of the plant health passport, mandatory for the circulation of plants among professional traders within the EU

Likewise, the text will require professional traders to register in order to ensure simpler controls and a better traceability of plant circulation.

The new regulation will also contain measures to deal with pests introduced from non-EU countries, according to an approach based on the risk level.

Imported materials, risk level

Thus, in order to quickly identify pest risk probability and other plant health risks, a system for the prior assessment of plants and materials from third countries will be introduced. Once identified, temporary bans will be imposed to those plants involving risk, intended to prevent the introduction of pests in the European Union territory.

Professional traders dedicated to import of plants and vegetable products will need a phytosanitary certificate, just as will clients of postal and Internet services and passengers importing plants susceptible to pest risks. However, individual travelers importing small quantities of plants for private use would be exempt.

When a diseased plant is identified, it will be included in a list of high risk plants, and therefore will not be able to obtain the European certificate.

The stance of the EU Council confirms the agreement reached with the European Parliament in December 2015, also approved by the Twenty-eight permanent ambassadors last May. Only remains pending the approval by the European Parliament at second reading.

See the full document on the proposed Regulation of protection measures against plant pests here.

 

Fuentes:

http://www.consilium.europa.eu/es/press/press-releases/2016/07/18-tackling-plant-pests-new-measures-adopted/

http://video.consilium.europa.eu/en/webcast/dbe88c55-a301-455f-b24c-cbcb015f5f63

 

Whitefly: Tecnova trial unveils Nakar’s potential

The new Seipasa natural formulation to control whitefly equals the chemical reference’s effectiveness, plus it does not leave any residue and it is suitable for integrated and organic production

María del Mar Téllez, IFAPA researcher, at the conference on whitefly.

María del Mar Téllez, IFAPA researcher, at the conference on whitefly.

At Tecnova’s headquarter, in Almería’s Technology Park, its researchers presented the results of a test conducted on integrated control of whitefly in greenhouse tomatoes developed in an experimental farm that belongs to the research entity. Next to María del Mar Téllez, researcher at the Institute of Research and Formation on Agriculture and Fisheries of the Government of Andalusia (IFAPA), technicians and producers introduced the most effective tools to deal with this insect, Bemisia tabaci, through preventive measures as well as plant health and biological control.

As explained by Tecnova’s R&D Director, Carolina Martínez, and integrated production technician Carolina Sánchez, this research has proven the high effectiveness of treatments that employ SEIPASA’s biopesticides on whitefly immature and adult populations.

NAKAR, Zero Residues and no safety term

NAKAR (registry # ES-00123) is a bioinsecticide taken as a reference, which show its great capacity to eradicate whitefly populations while shutting of its biological reproduction.

During the trial developed from March to June, we evaluated the insecticidal effectiveness in three experimental treatments compared to an untreated control: control (T0), NAKAR 10 ml/l (T1), NAKAR 6 ml/l + Pirecris 2 ml/l (T2) and Acetamiprid 0.5 g/l (T3).

The Tecnova researchers highlighted the successful process of whitefly pest control with natural products such as Nakar and Pirecris, as well as chemical reference Acetamiprid. The findings of the trial showed that “in all three treatments the insecticidal effect was similar and statistically indistinguishable from each other”, which confirms the effectiveness of Seipasa’s natural formulations equals the chemical reference, with added value too – it doesn’t leave behind residues in the crop and that makes it suitable for integrated and organic production.

Evolución de la severidad - Adultos Bemisia tabaci

Thus, the insecticide potential of the newly formulated NAKAR that was stated in this trial adds up to the advantage of being a zero residue product, which does not require safety periods. Similarly, its synergy with Pirecris, another botanical-based bioinsecticide, has proven a tight control of Bemisia tabaci.

As the conclusions stated in, both solutions cause direct and immediate effects on pests: “They have produced desiccation in immature stages and a loss of cohesiveness in the adult stage. In both cases, direct contact of these products has led to the death of insects”.

Fases inmaduras de la mosca blanca antes y despúes de los tratamientos, y efectos de los tratamientos sobre la fase adulta

In this line, Seipasa’s technical director, Xavier Nácher, emphasized the accomplished goal of this new solution hitting the market: “NAKAR achieves the eradication of the pest penetrating the insect’s cell membranes and causing its dehydration, by disruption of the waxy layer, and death”.

Xavier Nácher, Seipasa’s Technical Department Director.

Xavier Nácher, Seipasa’s Technical Department Director.

As Nácher stated, NAKAR’s action causes cytolysis of the insect cells, in other words, the breakdown or decomposition of the membrane, so it loses cell material and vital processes stop. Furthermore, it blocks the insect’s spiracles, which leads to its suffocation.

The NAKAR’s natural base makes it a privileged tool for Integrated Pest Management (IPM) strategies, as well as resistance management programs, to which it shows optimum results.


NAKAR use strategies

As Nácher explained, NAKAR can be used as a solution against whitefly in crops:

1) Intended for zero residues production, it must be applied as soon as the pest appears in order to shorten its life cycle and consequently its spread. Similarly, it can be used in the crop’s final stage to guarantee residues free harvests.

2) In order to set Integrated Pest Management (IPM) strategies and resistance management, NAKAR can be used with other insecticides that do have a security term in the middle period of the cycle.

3) Similarly, its effective insecticidal action, substantiated by recent trials, make it an alternative for the most demanding organic production.

Kynetic4, bioestimulante

Natural technology to optimize fruit setting

The advances in biostimulation offers farmers highly specialized products such as Kynetic4®

Kynetic4, bioestimulante

In seasons like the current one, which has included an abnormally warm winter, time lags in production cycles increase, and this determines the quality and quantity of crops.
Sprouting, flowering and fruit setting processes itself require high energy demand, while climate disruptions do not help to keep the plant in good shape to cope with this brief but crucial period.

It is for this reason that, in order to ensure success at this stage, using specialized bioestimulants such as Kynetic4® is necessary. This natural input implies a significant energy boost that improves sprouting and promotes flowering helping pollen fertility, and optimizes fruit set. Besides, it acts as a protection barrier against stress conditions, whether it is frost, drought, salinity, pests or thermal changes.

Effective pollination

Effective pollination is thus less determined by natural factors that influence it, such as temperature, rainfall, the amount of pollen captured or the nutritional status of the plant.
Although this latter aspect requires an appropriate fertilization management since the start of the cycle to avoid deficiencies during fecundation, using Kynetic4® achieves the maximum use of nutrients of present in this phase. Specially selected aminoacids act on routes of interest improving nutrient assimilation and inducing protein and phytohormone synthesis.

This SEIPASA formulation stimulates growth of apical, leaf and floral meristems, favors stomatal opening and micronutrient transportation, increases pollen germination and regulates water balance. But it is also enriched with organic matter and nitrogen, which increases the longevity of the eggs.

Furthermore, it acts as a natural chelating agent, unblocking soils and facilitating the assimilation of other compounds. Its fulvic acids influence the health of the rhizosphere due to its capacity to multiply beneficial microorganisms, and enable better use of foliar and root fertilizers.

 

Vid y olivos

Vines and olive trees: Soil preparation for a successful campaign

When the time comes to fertilize vines and olive trees, the question to be asked is which product to use to achieve the best results.

The correct soil preparation in order to lend it a nutrient balance is critical for having a good campaign. It is one of the practices that influences the most in the harvest’s production and quality, and must be as respectful as possible of the environment, preventing leachate and runoff.

Although the necessary macronutrients (nitrogen, potassium and phosphorus) are naturally in the soil, they will not replenish fast enough to maintain soil fertility. That is why it is necessary to make additional contributions. But which fertilizer should be used?

Based on the securities that offer organic full fertilizers compared to synthetic fertilizers and even manure (See: The benefits of 100% organic full fertilizers), before choosing one or the other soil and foliar analyses should be carried out in order to grasp the exact needs of each crop.

Not only the characteristics and composition of the substrate must be taken into account, but also the type of plant material, age, agricultural practices, water status or planting density used, among other items. It is also important the observation of the farmer on the development and evolution of plants.

In keeping with these circumstances to try to prevent nutrient deficiencies and excesses, fertilizers can be applied as efficiently as possible through its specific formulation, fractionation and / or its adaptation to the stage of the crop cycle when its availability is the most appropriate.

Fertilizers for new olive trees and vineyards

Fertilizers Organitro and Seivital K

At the current stage of the production cycle of the olive tree, it needs all the energy to develop its leaf mass, and one of the best options – due to its formula –  is full fertilizer Organitro®, which includes much nitrogen and is 100% organic. Accordingly, it is the most appropriate reference for new vines.

Its high organic matter content substantially improves the soil’s chemical, physical, and biological properties. It also increases its capacity of cationic exchange* and acts as a buffer agent to lower the tendency to sudden pH change in the soil when acidic oralkaline reaction substances are applied. It also allows the formation of organometallic complexes, thus stabilizing soil micronutrients that otherwise would not be profitable.

It is crucial to stimulate the plant metabolism and crop revitalization, especially during periods of peak nutrients demand, in order to achieve higher productivity, and references like this are essential.

Vines in production

For vines in production, with higher potassium requirements, you can use specialized solutions such as Seivital K. It is an organic fertilizer with a high percentage of this essential macronutrient, which also makes it the most appropriate when crops are into the flowering and setting periods.

Thanks to its input of organic matter and humic acids, allows farmers not only to improve soil structure by increasing cation-exchange capacity, but also boosts microbial activity and the availability of exchangeable potassium at the time it favors the transformation of this nutrient, which is included in the soil in a form that cannot be absorbed by the plant.

consulta@seipasa.com

*Ability of soil to retain and release cations. The most important cations related to plant growth are calcium (Ca), magnesium (Mg), potassium (K), ammonium (NH4 +), sodium (Na), and hydrogen (H). The first four are nutrients directly involved in plant growth. Sodium and hydrogen have a pronounced effect on the availability of nutrients and moisture.

Abono orgánico brote

The benefits of 100% organic full fertilizers

Full organic fertilizers (with contain the three primary nutrients: nitrogen, phosphorus, and potassium) offer many benefits to crops compared to chemical fertilizers and even manure.

Put against manure variability, they guarantee fertilizer units (N, F, K) while they ensure the absence of weed seeds or pathogens that can migrate from manure to crop. Besides, many kinds of manure are not allowed in organic agriculture: those from intensive livestock farms are likely to be tainted with antibiotics, pesticide residues or heavy metals.

On the other hand, some kinds of manure very rich in macronutrients, such as nitrogen, if not mixed with poorer manure or plant remains, tend to imbalance despite composting.

Regarding synthetic fertilizers, the benefits are more evident, both for the crop and the environment, in the short and especially in the long term.

Although using of inorganic fertilizers contributes with immediately available nutrients to the plant, it is easy to employ them excessively or deficiently.

Chemical fertilizers do not amend the soil

Besides the chance of contamination of surrounding and underground water, and the increase of toxic salts in the soil when applied in large quantities, soil degradation is a significant risk in the single use of chemical fertilizers, since it eliminates useful microorganisms for plant nutrition. The simple fact is synthetic fertilizers fail to amend the substrate – they only feed the plant.

When organic fertilizers are applied, soil microorganisms themselves degrade them until they become water-soluble compounds that plants take advantage from. Another valuable feature is that they achieve the increase of activity in bacteria and fungi that benefit the soil. In fact, this kind of fertilizers boost the proliferation of fungi responsible for plants to take advantage of nutrients.

Thus, organic fertilizers improve soil structure, help to retain nutrients, allow carbon fixation in the substrate and enhance the ability of the crop to absorb water.

100% organic guarantee and official certification

This natural effectiveness can be found in specialty formula fertilizers tailored to the requirements of each crop in each time of the production cycle. The different lines of SEIPASA fertilizers are a sample of the best options for natural nutrition.

SEIPASA offers 100% organic guaranteed fertilizers, supported by an environmental certificate, which are great for integrated production.

Multisei y Terrasei

Multisei and Terrasei fertilizers

The balanced composition of the Multisei and Seivital products lines (liquid and solid organic) place them as regenerating soil models for their ability to balance the substrate nurturing, improving its structure, composition and microbial activity.

Multisei fertilizers also promote the formation of soil aggregates that improve soil friability, which facilitate farming and prevent waterlogging and root asphyxia. In the same line, they include on their formulations vegetable raw materials with a high degree of refinement that avoid problems such as precipitates and clogged drip irrigation systems.

Seivital solid fertilizers, featuring pellets that get distributed on the soil easily and uniformly, allow immediate availability as they disintegrate in just five minutes in the presence of water and dissolve completely in no more than four hours. This achieves the maximum yield per added fertilizer units.

They ensure a fertilizer of organic origin, free of pathogens, antibiotics and weed seeds, while also free from Salmonella, Enterobacteriaceae, and Streptococci.

When regularly applied, they are the best solution to enrich and restore eroded soils, compacted or depleted, since they achieve the increase of porosity of the substrate as long as they allow greater air circulation, as well as rapid infiltration and greater retention of rainwater or irrigation water.

SEIPASA’s Terrasei line is a response to the nutritional needs of crops in different growth stages, since it combines mineral nutrition with the energy input and the soil structuring contribution of organic fertilization. 

Furthermore, these products include a percentage of aminoacids in their composition, which results in an energy plus for crops, since they allow the plant to use up its metabolic resources for primary physiological functions.