Tag Archives: nutricionales

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. 

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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.

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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/

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SEIPASA in Fruit Attraction 2016

SEIPASA at Fruit Attraction 2016

SEIPASA images at Fruit Attraction 2016

Successful participation and great reception of ‘Zero Residues’ SEIPASA products

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The passage of SEIPASA along Fruit Attraction 2016 has concluded exceeding expectations. With large numbers of visitors throughout the whole fair, which was held from 5 to 7 October at the IFEMA fairgrounds, SEIPASA says goodbye satisfied by the great success of their products and new developments.

The new natural insecticides of SEIPASA Nakar and Pirecris have aroused great interest among professionals in the sector, given its high capacity to control pests – demonstrated with diverse independent tests – with the added value, with regard to the conventional products, of obtaining ‘Zero Residues‘ crops.

 

This was evidenced by the success of call in the technical talk devoted to explaining the properties, field efficiencies and integration strategies IPM (Integrated Pest Management) of new insecticides solutions Nakar and Pirecris by SEIPASA technical director, Javier Nácher.

During the event many attendees were interested in the SEIPASA latest developments.

The future of the agricultural sector was also present at the SEIPASA’s stand represented by a group of students from the Polytechnic University of Madrid. The director of R&D+i department, Francisco Espinosa, responded to their concerns and showed them the great potential that natural treatments  can reach, most of them of botanical origin, after a thorough research and development to achieve the ideal formulation.

SEIPASA’s stand was also the scene of a meeting of all partners making up the consortium responsible for carrying out the ambitious European project Life+ Zero Residues (LIFE12 ENV/ES/000902: LIFE Zero Residues: towards a sustainable production and supply chain for stone fruit). The conclusions of this initiative, aimed at improving the quality and sustainability of production, conservation and marketing of stone fruit with the guarantee to be free of residues, speak of success.

For more information about SEIPASA products (biopesticides, biostimulants, fertilizers…), contact us: consulta@seipasa.com