A Guide for Using Calcium Fertilizers

Calcium is an indispensable nutrient in the process of crop planting. Every year, many growers apply calcium fertilizer to their crops. It is understood that at least 40 kinds of physiological diseases of fruits and vegetables are caused by low calcium: apple bitter pox, tomato, citrus navel rot, pear water heart disease, grape cracking, and so on. Calcium deficiency in crops not only affects the normal growth of crops but also damages the planting losses of growers.

Why are crops so dependent on calcium?

Calcium is one of the essential medium elements in plants. Dicotyledonous plants have a high demand for monocotyledonous plants, and their existence has irreplaceable functions:

1. Stabilize plant tissue to enhance the resistance of crops to heavy metals, pests, diseases, drought, etc.

2. Improve quality and prevent cell rupture from bitter pox, water heart disease, rot heart disease, and post-harvest rot.

3. Prevent premature aging.

4. Promote root growth.

How can we make calcium supplementation less difficult?

Use of root calcium fertilizer:

At present, calcium fertilizers on the market mainly include lime and calcium nitrate. Calcium nitrate has high solubility and can be used as a water-soluble fertilizer for flushing or spraying; the use of lime needs to be cautious, and long-term application of lime can easily cause soil pH to rise.

What needs to be reminded here is that the calcium fertilizer applied to the soil can be used again at an interval after 2-3 years of continuous use. It should not be used year after year. When using calcium fertilizer, it is best to use it in combination with organic fertilizer, so that it has good absorption of calcium fertilizer. synergistic effect.

The timing of spraying is critical:

Selecting the optimal calcium nutrition period of crops for foliar spraying will have a very good calcium supplementation effect. Generally, the demand for calcium in crops reaches a peak period in the young fruit stage, and the synchronization of the foliar surface and the fruit surface can be achieved during this period. Absorption, a small amount of calcium can be taken several times for foliar calcium supplementation.

Multi-nutrient synchronization:

When topdressing calcium fertilizers to the roots, nutrients such as potassium, zinc, and boron can be added to the leaves at the same time, which can promote the absorption of calcium and improve the utilization rate of nutrients.

The Prospect of Pesticide Synergists

Pesticide synergist itself has no biological activity, but when mixed with certain pesticides, it can greatly improve the toxicity and efficacy of pesticides. The mechanism of action of pesticide synergists is mainly to inhibit or weaken the detoxification and phytotoxicity prevention effects of pests, weeds, and germs on pesticide activity, and to delay metabolism of pesticides in the control object, thereby increasing the biological control effect.

Scope of Use

Pesticide synergists can be used as spray improvers, foliar absorption aid, activator, etc. They are widely used in pesticides, fungicides, herbicides, foliar fertilizers, plant growth regulators, trace elements, and biological pesticides. In the spray mixture of chemicals, they are especially suitable for systemic drugs.

Advantages and Prospects

Under the current situation of a growing population, decreasing land, increasing demand for food, and increasingly severe environmental requirements, people need to develop more efficient and safe new pesticides. However, new pesticides have a long development cycle, large investment, high risk, and low success rate, especially modern high-efficiency and ultra-high-efficiency pesticide varieties.

With the rapid development of pesticide synergists, there will inevitably be many new formulations:

On the one hand, it can reduce the environmental pollution caused by older formulations such as wettable powder and emulsifiable concentrate with large tonnage, and at the same time save packaging, storage, transportation, and other costs. This has significant economic and social benefits for improving drug efficacy, reducing toxicity, and reducing the environmental pollution.

On the other hand, it can improve the physical properties of the original drug, not only prolong the service life of the original pesticide, but also better play the role of the drug, reduce the dosage, expand the scope of application, reduce costs, and save manpower. Moreover, it can achieve the purpose of reducing environmental pollution, improving the safety of users, and maximizing the efficacy of the active ingredients of pesticides.