Aphids on cabbage

Aphids on cabbageA rather dangerous pest of cabbage is aphids. Wingless females have an ovoid-shaped body, about 2 mm in length. Transparent wings have winged parthenogenetic females. They have a head and chest brown, and the abdomen is yellow-green. The length of the body 1,7 mm has wingless oviparous females. The egg has an elongated-oval shape. Initially, the color is cream, later black, shiny, length 0,5 mm. On adult wingless aphids are similar larvae, but they are smaller in size.

Aphid on cabbage hibernates on the stump, staying in the egg stage. Also a place for wintering of this pest can serve as testes of cabbage and weeds. Larvae of eggs come out in the spring. Developing, they turn into wingless aphids, which give rise to larvae. Winged females appear later. From weeds to cabbage, they arrive in the middle of summer. There, each of them breeds up to 40 larvae.

The leaves of cabbage are completely covered with aphids during the mass appearance of the pest. Attacking plants, the pest sucks from the cabbage juice, which leads to discoloration of the leaves. Sometimes there is twisting of leaves, their shade can change to a bluish-pink. Plants begin to lag behind in growth, the development of head buds is suspended. Shoots with buds on the testes acquire a bluish-pinkish hue, the formation of seeds does not occur.

Methods of combating aphids on cabbage

When the first colonies of aphids appear on the cabbage, the trucker will have to work hard. Do not immediately resort to the use of chemicals. First, you should try methods that are safe for you and for the environment.

You can start by treating the cabbage with ashes or tobacco. To prepare the solution, take 200 g each for 10 l of hot water, insist for 24 hours, and then use.

Effective against aphids infusion of potato leaves. It will be required to take 1-2 kg of ground green mass. She needs to insist in 10 l of water, and then strain.

The use of decoction of the tops and stepsons of tomatoes will give the same result. They must be taken in the amount of 40 gr. On 1 l of water. To boil it is necessary for half an hour on low heat. At 1 l of water, one cup of broth will be enough.

It will help in the fight against aphids on cabbage such grass as yarrow. Two liters of water must be poured in 200 gr. Fresh raw materials. This mass should be steamed for an hour, and then add water to 10 l.

Spray cabbage is better in the evening. In this case, the infusion will fall on all the leaves and sides of the cabbage leaves. You must remember to add to the solution of laundry soap. In this case, the solution will adhere well to the leaves. It is necessary to carry out 3-4 such processing with an interval of 1 a week.



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