Application of an insecticide pyrinex super against a complex of pests in grain crops | Применение интектицида пиринекс супер против комплекса вредителей в посевах зерновых культур
2013
Bojko, S.V. | Slabozhankina, O,F., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute of Plant Protection
In the conditions of the Republic of Belarus there were presented the results of studies on evaluating the efficiency of a preparation pyrinex super (a.i. chlorpyrifos, 400 g/l + bifenthrin, 20 g/l) (Israel) in spring barley (Hordeum vulgare) and winter wheat (Triticum aestivum) crops against a pest complex (Cereal Leaf Beetle and cereal aphids). The insecticide action with different rates of application applied at stem and grain formation stages on change of Cereal leaf beetles and grain aphids number and harmfulness is shown. Adding the preparation in phase stooling in crops of spring barley and winter wheat provided decline of Cereal Leaf Beetle on 80,0-100% of cereal aphids - on 85,0-100%. With a population of aphids and Cereal Leaf Beetle close to the threshold is enough to apply insecticide pirineks super at a rate of 0.6 l / ha, with a threshold is exceeded, and it is 2-3 times - 0.75 l / ha. As a result of pests number decrease spring barley presented yield has made 1,4-5,2 cwt/ha, winter wheat – 1,2-4,1 cwt/ha.
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