126 / 156
composition of phytophagous is represented by 55 species, with the highest population
of striped pea weevil – 18.6 instances per 1 m
2
(ind./m
2
), clover seed pest - 16.3 ind./
m2 and herbal bug – 12.5 ind./m
2
. Pea weevils on crops have two peaks of population
– I decade of May and the I - II decade of August, the peak population of clover seed-
destroyers is in the first decade of May and the I - II decade of August, and herbal
bugs – on III decade of July and the first decade of August. When exceeding economic
threshold of harmfulness (EPV): weevils – 3...5 beetles per 1 m
2
; bugs – herbal bugs
– 15 for 1 m
2
; aphids – 50 aphids per stem of an effective regional treatment of seed
crops in a phase of budding by drugs – bitoxybacillin and decis. The effectiveness of
bitoxybacillin is 85.5–90.5 %, decis – of 90.2–95.5 %.
Молочнохозяйственный вестник, №1 (21), I кв. 2016
126
РЕФЕРАТЫ
Электронная Научная СельскоХозяйственная Библиотека