Tag Archives: natural treatments

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


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.


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.


*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.