The author of article tells about biology of development of a pochvoobitayushchy insect – the grain ground beetle, his harming stages, a situation developing on crops of grain crops of the Crimea.
The grain ground beetle treats pochvoobitayushchy insects
The grain ground beetle treats pochvoobitayushchy insects. Harming stages are both a bug, and a larva, but larvae which eat young leaflets of winter crops are most harmful. Larvae in the soil winter, in the spring continue a food to the middle of May then pupate. Mass reproduction of the grain ground beetle is observed, first of all, at permanent crops of grain crops. In this case bugs and larvae are provided with a forage for the entire period of the development.
Recently gradual strengthening of injuriousness of the grain ground beetle on crops of wheat, barley, a rye and cereal herbs is observed, is more rare – oats, corn.
Weather conditions of the current year are favorable for realization maximum biopotenciala an insect.
For decrease in number of this wrecker, and also all types of pochvoobitayushchy wreckers, in the Republic before sowing there was a provedenatoksikatsiya of seeds in volume of 48,7 tons, or 102 % of a kpotrebnost. However, priprovedeniya of inspection of shoots of winter crops of a crop of 2009, on sostoyaniyuna 24.10.08, naploshhadi 172,8 thousand hectares, settling by larvae of the grain ground beetle vyyavlenona 9,8 thousand/hectares, at average number of 0,7 copies/sq.m that already exceeds EPV. The centers where number of the wrecker fluctuates from 0,9 to 5,0 and more copies/sq.m however meet. Larvae of the I-II age now eat. Emergence of larvae of the second age during this period of time, says that development of the wrecker was begun on cereal weeds, long before sowing of grain crops. At such number of larvae on fields of late term of sowing, sprouts of the winter will be destroyed, without having managed to appear over a soil surface. Pleshin from a food of the wrecker can and won’t be, as it will eat farther from borders of fields.
During later period of vegetation, it is possible to use the following effective preparations for protection of crops against the ground beetle: Damascus, Diazinon, Diazol of 1,5-1,8 l/hectares, Practician of 1,5-1,8 l/hectares, Fostran of 1,5 l/hectares, Basalt, k.e. 1,5-1,8 l/hectares, the Paraclown of 0,5-0,75 l/hectares and others, resolved the List ….
Considering that weather conditions of autumn of the current year, are favorable for development and injuriousness of the grain ground beetle, it is necessary for all heads of agricultural enterprises to take without fail under personal control the organization of regular continuous inspection of shoots of winter crops and if necessary to organize carrying out destructive actions for protection of crops.
Village KINDRUK, deputy chief, head of department of forecasts and diagnostics of the State inspection of protection of plants of AR Crimea.