2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
The cabbage moth is practically a world famous pest. The caterpillars of these butterflies can "transform" the cabbage head with a few gnaws to such an extent that it is deemed not subject to storage. They can eat not only any varieties of cabbage, but also other plants of the cruciferous family - rutabagas, rapeseed, radish, mustard, radish, turnip. Therefore, a fierce struggle should be waged against this pest
Meet the cabbage moth
Cabbage moth is a small butterfly from the family of ermine moths, grayish-brown in color, rather unsightly looking, with a wingspan of only 14 - 17 mm. This pest flies in mid-May, laying small eggs of light green color (up to 300 pieces) on the undersides of the leaves. The extremely mobile caterpillars hatching from such peculiar eggs gnaw the tissues on the leaves from below, leaving the skin on top intact (in the form of the so-called "parchment window"). The most dangerous damage to the apical bud and inner leaves is a serious obstacle to the subsequent formation of heads of cabbage.
Cabbage moth can give 3-4 generations during the summer, and by the end of the growing season, these pests fly everywhere in huge numbers. Pupae overwinter in cobweb cocoons. When viewed from above, the cabbage moth is somewhat reminiscent of a small straw.
How to fight
It happens that sometimes “riders” begin to parasitize on the pupae and caterpillars of the cabbage moth - thanks to these beneficial insects, the number of the pest can be significantly reduced.
The most important measure to combat cabbage moth is the elimination of not only cabbage, but also other crops from the site of post-harvest residues, with their subsequent destruction, because it is on such remains that cocoons and butterflies accumulate for the winter. Alternatively, such residues can be embedded in the soil during the autumn digging together with representatives of the cabbage moth that went for the winter.
It is equally important to get rid of spring weeds in a timely manner - the first generation of pests often develops on them.
It is possible to increase the resistance of plants to damage caused by pests by foliar dressing of cabbage plantations with a solution of superphosphate with the addition of potassium chloride. The first feeding is carried out immediately after the discovery of cabbage moth eggs on the plants, and the second - after 20 days.
Treatment with biological preparations, herbal infusions and insecticides
Bitoxibacillin can be called a good remedy against cabbage moth. If it is possible to find 3 - 5 caterpillars or more on one plant, or if 10 - 30% of plants are inhabited by parasites, spraying with biological preparations begins to be applied: lepidocyte (for 10 liters of water - 0.5 g) or bitoxibacillin (for 10 liters of water - 1, 5 d).
Among bacterial preparations, one can also distinguish bactospein, gomelin, entobacterin, dendrobacillin, dipel.
It is quite possible to use herbal infusions, for example, from dandelion. Half a kilogram of dandelion leaves should be thoroughly chopped and crushed, and then pour 10 liters of water. Then you need to add a tablespoon of soap to the bucket - the solution will stick better to the treated surface. After three hours, filter the resulting infusion and start spraying the leaves (1 liter of infusion is taken per 1 square meter), and they tend to spray the plants as if from the bottom up.
Cabbage is treated with calcium arsenate, at the rate of 12 g for every 100 square meters. A good effect is spraying the vegetation with a sodium fluorosilicate solution - 75 to 100 g of powder are diluted in 10 liters of water. Since this agent is poisonous, in no case should they process the fruits, and such processing is carried out no later than four weeks before the start of harvesting.
Insecticides such as ambush, talkcord, actellic, ripcord, nurell, etc. will be suitable for fighting cabbage moth.
If the use of any drug does not meet expectations, it must be replaced with another - the fact is that due to the indiscriminate use of all kinds of drugs, the cabbage moth has developed resistance to many of them. But individuals resistant to absolutely all drugs do not yet exist.
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