2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Zucchini not so long ago became fashionable among summer residents, but quickly gained popularity for its ease of cultivation, fertility, useful qualities and a variety of dishes that can be prepared from them. But zucchini was not only to the taste of humans. A number of insects and fungi parasitizing plants are also not averse to feasting on an overseas vegetable
The most malicious insect pests
1.
Spider mite, who loves dry and warm weather, which does not prevent him from weaving his thin cobweb nets on the back of the zucchini leaves. If the summer is rainy, mites prefer to settle in greenhouses, bypassing the side of the beds with zucchini, which, as a rule, grow in open ground.
Stable heat in our country is established in the second half of June, then the prolific spider mite begins its pest activity, adding a new generation every 2-4 weeks. Larvae and adults suck out the sap of the plant, leaving leaves and ovaries without food, which makes the leaves turn yellow and dry, and the ovaries fall off. By August, having noticeably reduced the crop of zucchini, the mites hide in the crevices of buildings, the frames of greenhouses, or even simply into the soil, climbing to a depth of no more than 6 cm for wintering, so that next spring they begin a new cycle of their presence on Earth.
2.
Melon aphid - these "fat cows", guarded by ants, are even more fertile than a spider mite, managing to bring up to 20 generations to the world during the summer season. Green or yellow larvae and their dark green female mothers also hide on the reverse side of the leaves, which is why the vegetable grower does not always start a fight with them in a timely manner. Sucking the juices from the leaves of the squash, aphids lead to the fall of leaves and flowers, reducing, or even completely depriving the crop.
3.
Sprout gray flies, having waited for the birch trees to bloom, they get out of winter shelters, which are crops of clover, grain and vegetable crops, and with a new passion they begin to lay eggs under lumps of wet manured soil. After a maximum of 10 days, their white larvae begin their insidious work, damaging seeds ready for sprouting and tender sprouts that have already appeared in the world.
4.
Polyphagous whitefly zucchini does not bypass its attention, like other pests, occupying the reverse side of the leaves.
Diseases provoked by parasitic fungi
1.
Powdery mildew compromises such a wonderful natural phenomenon as droplets of moisture on the leaves of plants, iridescent with all the colors of the rainbow. Insufficient watering of zucchini in conjunction with high humidity is a favorable environment for the development of a fungal disease that affects the stems and leaves of zucchini.
The appearance of white rounded spots on the leaves should alert the grower, or the fungus quickly occupies the entire surface of the leaves with its powdery white coating, retarding the development of leaves, or killing life in them.
2.
Downy mildew or peronosporosis deliver no less damage to the zucchini crop, despite the word "false". Rains and excessive watering in conjunction with 18-23 degrees contribute to the rapid spread of the disease, which paints the leaves with chlorotic spots. As the disease progresses, the spots first turn yellow and then turn brown, drawing out juices and drying out the leaves.
3.
Anthracnose especially loves to hit zucchini under a film cover. Although the causative agent of the disease is considered an imperfect fungus (deuteromycetes), it carries out its pest activity during the entire growing season of zucchini, forming vague rounded spots on the leaves that suck life from the plant. The leaves begin to crumble from drying out, and the set fruits of the zucchini begin to wrinkle, aging at the very beginning of life, and rot at the root. The fungus is so insidious that, together with the fruits, it migrates to the bins, continuing to destroy stocks of zucchini.
Fight the prolific and voracious parasites
It is very important not to forget that soil is
living balanced organism … It is easy to disrupt the natural balance, but much more difficult to restore.
Implementation of agronomic measures is a good prevention.
If time is lost and the enemy quickly seizes territory, you will have to resort to harsh measures, which are described in detail on our website in special articles dedicated to each pest.
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