Ozerov A.L.
Ryzhanovsky V.N.
The results of using the Beily's formula for estimation of the numbers of L. svecica on a 6 hectar region from July 20 till August 30 are provided. The method gave satisfactory results in the period from July 26 till August 20, the standard error not exceeding 20%.
ШАРОВ А.А., ИЖЕВСКИЙ С.С., ПРОКОФЬЕВА Е.А., МИХАЙЛОВ К.Г.