Methods for controlling pests and diseases in organic vegetable production.

(Baonghean.vn) - Organic vegetable production means not using pesticides or chemical fertilizers. Therefore, preventing and controlling pest and disease outbreaks is more important than letting them develop before eradicating them. The following methods will help growers save on production costs and effectively control pests and diseases.

Check your vegetable garden regularly.

Regularly inspect your vegetable garden. The frequency will depend on the weather, climate, planting season, and the area where the vegetables are grown.

If pests and their egg clusters are discovered, they must be destroyed immediately to prevent disease outbreaks. This requires vegetable growers to have a certain level of knowledge about different pest species in order to detect them.

Create an environment that allows beneficial insects (natural enemies) to thrive.

In nature, there is always a certain balance among insects. There are beneficial insects and harmful insects. This ratio is always roughly equal. Depending on many factors, there may be more pests than natural predators, or vice versa. Each pest species has its own natural predators. Therefore, we need to create conditions for natural predators to thrive and outnumber pests in the garden. This will make growing vegetables less strenuous.

According to statistics, there are more than 100 families of insects (pests) such as spiders, aphids, mealybugs, etc. These insects can serve as food for other beneficial insects (natural enemies) such as ladybugs, blister beetles, dragonflies, praying mantises, bees, etc.

Therefore, creating favorable conditions for these natural predators to thrive involves planting wildflowers such as clover, alfalfa, and impatiens around the garden or in open spaces near the vegetable garden to stimulate the growth of beneficial insects that will eliminate pests.

Provide shade along the rows of vegetables, or build a greenhouse or polytunnel.

Use fabric or plastic sheeting to create a frame or barrier around the garden or along rows of vegetables to protect them from insect attacks. This technique is effective against some beetles and stink bugs that damage cucumbers and leafy vegetables.

This method is often applied to certain types of cucumbers, or vegetables that do not require pollination. This technique also helps reduce frost damage and other pest attacks (rats, insects, snails, etc.). In addition, greenhouses and polytunnels extend the growing season for vegetables, protect them from unfavorable environmental conditions, and prevent pest and disease attacks.

Agricultural mulch should be used to cover planting beds to limit weeds, fungi, and soil-borne organisms that harm vegetable gardens, and to retain water. This method can be applied to all types of crops.

Crop traps

Planting some less important weeds near the vegetable garden to lure insects to concentrate there will reduce the pressure on the vegetables. Then, when insects concentrate in high densities and cause significant damage, it's much easier to eliminate these lure plants using insect traps like phenon, etc., than to eradicate insects from the entire vegetable garden.

Adjusting planting seasons

Vegetable growers need to have a certain level of knowledge about different types of insects, their harmful characteristics, especially the timing of outbreaks and damage caused by each type of insect throughout the year. For example, some insects thrive in the summer, while others develop and cause damage in the winter, and so on.

Once you understand these characteristics, choosing the right planting season will greatly reduce pest and disease damage.

Intercrop various vegetable species and rotate crops when necessary.

Intercropping is a technique of growing two or more types of vegetables in the same area during the same growing season. To practice intercropping, growers need to have a thorough understanding of the characteristics of several types of vegetables.

Crop rotation is a technique of growing a different type of vegetable in each season on the same plot of land to prevent insect outbreaks that can damage a single crop. These vegetables should belong to different families; for example, if cabbage and kohlrabi are grown this season, a different family such as gourds, squash, beans, or tomatoes should be planted the next season.

Maintain field hygiene and keep plants healthy.

Healthy plants are not attractive to insect pests; if attacked, they recover quickly and the produce is marketable. - Regularly clean the fields, remove weeds and breeding grounds for pests (insects, rats, snails, etc.), and after harvest, ensure there are no hiding places for pests, eggs, and pupae in crop residues.

Plow the land immediately after harvest to expose it to the sun, or utilize natural predators (birds) to destroy pupae, eggs, pathogens, rat nests, and insects, thus cutting off the source of damage for the next crop.

Apply organic and biological pesticides.

Some pesticides that can be used in organic vegetable production, as announced by specialized agencies, include Bt (Bacillus thuringiensis), pyrethroid insecticides, rotenone insecticides, insecticide soaps, neem-based pesticides, and various vegetable oils…

When using this product, it is necessary to carefully read the instructions and consult with a professional or technical expert before applying it to organic vegetables.

Ngoc Anh

(Synthetic)