Annually at the beginning of summer there is huge number of the beautiful butterflies blackveins having white coloring with black streaks. So there is a lot of them that they literally cover the soil, trees also remind the flying snow flakes. What are blackveins dangerous by why they are considered malicious wreckers of garden?
Forming big groups, butterflies look extremely beautifully, but this beauty represents very serious threat for the woods and gardens, caterpillars of blackveins - dangerous wreckers of garden, they are capable to destroy completely fruit-trees, without shunning nothing.
White butterflies - wreckers of plants. Why there is a lot of them?
Population of blackveins sharply increases in favorable years when there is a lot of food reserve, summer hot and droughty, few natural enemies of caterpillars, and winters soft and low-snow. All this promotes that at the very beginning of spring mass exit of wreckers of plants from the cocoons begins. It usually coincides with blooming of kidneys on fruit-trees therefore caterpillars strongly begin to eat young kidneys and leaves, and month later pupate that can be observed on trees, fences. Two weeks later dolls leave adult butterflies and begins impressive mass years. On the photos of caterpillar of blackveins which are actively eating around tree.
Blackveins need large amount of moisture therefore often congestions them can be seen on the road after rain, on flowers, drinking nectar. Butterflies of harm do not bear, they have already made the dirty deed during this period when they were caterpillars. However after mass departure the period of laying of eggs begins, at the same time each butterfly can postpone until 500 eggs which later half-month will leave new caterpillars which will begin new cycle of development of this wrecker of plants.
What insects wreckers are most dangerous, fight against butterflies
Among insects of wreckers caterpillars of blackveins by right can be considered as one of the most dangerous, they do essential harm to adult plants and trees. Pest control of garden has to be complex and constant:
- During congestion of mass congestion of caterpillars on trees (somewhere in the middle of July), it is necessary to process plants insecticides. Any means intended for pest control will approach. Upon purchase pay attention to what is written on medicine package. Nitrafen, "Carbophos", "Commodore", "Spark" and others are very effective. It is possible to collect caterpillars manually, but at large number of trees and caterpillars it will not be rather productive. On sale it is possible to meet also biological products which are rather harmless to plants and the person, but in organism of insects break their system of activity why butterflies perish. Lepidotsid treats them.
- After caterpillars grow up, they begin to be preparing for winter, building protective slots of special web. In the fall, after subsidence of foliage it is necessary to collect and burn slots of blackveins which are very vulnerable at this moment as they are well noticeable. It is possible to do it and in the early spring, before blooming of leaves. Pest control of garden and kitchen garden has to be conducted in due time.
- In garden it is necessary to maintain constantly purity, not to allow growth of grass on roadsides and the blossoming weeds to reduce amount of nectar for power supply of butterflies blackveins.
Thus, fight against diseases by wreckers of garden and kitchen garden has to be constants if you want to protect the fruit plants and not to lose harvest.