Detailed Explanation of Common Pest and Disease Control Methods for Zucchini

Farmers often encounter some diseases when growing zucchini, and these diseases bring serious losses to growers. So how should these diseases be controlled? Here I have found several relatively common ones to briefly introduce to everyone.

1. Tobacco whitefly

Tobacco whitefly is a rather disgusting pest with strong spreading ability, and its notable feature is a layer of white powdery substance on its body. It mostly occurs on the underside of zucchini branches and leaves, and especially the newly grown tender leaves are even more susceptible to damage. When it occurs, dense light green granular substances can be found on the upper side of the leaves, seriously affecting the growth of zucchini. After it occurs, it is best to remove the affected leaves, then spray pymetrozine for control, focusing on spraying the underside of the leaves.

2. Stem rot

Stem rot is a disease that occurs in many vegetables, and zucchini is no exception. It can lead to the direct death of the plant. When it occurs, the root and stem area will slowly rot, which is very easy to notice. It is mostly caused by wounds appearing on the root and stem that are soaked in water for a long time, so drainage work must be done well. When it occurs, chemical agents can be used for treatment, and root rot agent can be used for control, especially after picking melons or weeding, to achieve the best effect.

3. Fruit cracking

Fruit cracking is a disease caused by improper planting operations. There are two causes: one is that there are wounds on the young fruit, and the wounds expand when the fruit swells later; the other is cracking caused by insufficient water or nutrients in the fruit. Control should be targeted accordingly. For the former, field management after fruit setting should avoid damaging the young fruit, and some sharp objects near the young fruit should be removed in time. For the latter, attention should be paid to the frequency of watering, avoiding zucchini being immersed in a relatively moist environment for a long time, and supplementing boron element more to strengthen the tolerance of zucchini.

4. Fruit rot

Fruit rot of zucchini is mostly caused by the growth environment stimulating pathogens, leading to the spread of pathogens. When it occurs, it is mostly concentrated at the stem and stalk position, and the pathogens enter the fruit from there, then spread, causing the melon to become soft and rotten, and finally completely rot. First of all, avoid growing zucchini in a hot and humid environment, as this is the environment most likely to induce pathogens. After discovering diseased melons, handle them according to the situation. Seriously affected ones should be removed directly, then irrigate with agents such as oxadixyl · mancozeb, applying drip irrigation from the roots. Similar agents can also be used in the early stage of the disease. Once a week, irrigating 2-3 times is enough.

The above is the common pest and disease control for zucchini. Everyone can refer to it and see the effect. Due to differences in geology, the required dosage will vary. Before purchasing, it is best to consult clearly first.