Asparagus Pest Control Fourteen Points Negative Earthworm
2019-08-26 13:05:40
It has a wide range of distribution in China, occurring in 3-4 generations a year in Shandong and other places. Adults and larvae ingest asparagus shoots or epidermis causing damage, which can lead to malformation of bamboo shoots or eating them into light rods, causing bamboo shoots to become short deformed. Or branching, leafy clusters, severely dead and dead.
〗 〖Prevention and control methods 1 Qingsuanyuan Deworming, early winter or early spring to clean the pastoral, clear the park in the dead branches and leaves, and burned to destroy the overwintering adults; 2 in the overwintering adult before the emergence of pesticide spraying control, available 20 % Exfoliating Emulsion 1500-2000 times, or 50% anti-inferior ultra-wettable powder 2000 times, or 47% Le Siben 1500 times, spraying once every 7-10 days, continuous control 2 -3 times; 3 Mastering the spraying of the above-mentioned agents on nursery and non-shooting fields during the hatching period of the eggs will help control the insects in the stage of younger drug resistance and reduce the number of adult insects. The effect is very good. Harvesting of the shoots in the early August begins at the hatching period of eggs and the peak period of larval infestation. It is a crucial period for the prevention and control of this worm, and the use of herbs is stopped about 10 days before asparagus harvesting.
〗 〖Prevention and control methods 1 Qingsuanyuan Deworming, early winter or early spring to clean the pastoral, clear the park in the dead branches and leaves, and burned to destroy the overwintering adults; 2 in the overwintering adult before the emergence of pesticide spraying control, available 20 % Exfoliating Emulsion 1500-2000 times, or 50% anti-inferior ultra-wettable powder 2000 times, or 47% Le Siben 1500 times, spraying once every 7-10 days, continuous control 2 -3 times; 3 Mastering the spraying of the above-mentioned agents on nursery and non-shooting fields during the hatching period of the eggs will help control the insects in the stage of younger drug resistance and reduce the number of adult insects. The effect is very good. Harvesting of the shoots in the early August begins at the hatching period of eggs and the peak period of larval infestation. It is a crucial period for the prevention and control of this worm, and the use of herbs is stopped about 10 days before asparagus harvesting.
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