Dynamics of number of the Myzus persicae on the chrysanthemum

Article is devoted to studying of number and population a myzus persicae of a chrysanthemum the melkotsvetnykh and the krupnotsvetnykh of the grades which are grown up on cut in the conditions of the protected soil in various phases of cultural development. Population the krupnotsvetkovykh of grades of myzus persicae has made 0,3-2,7%, the melkotsvetkovykh - 1,7-2,4%. The steadiest against settling of myzus persicae of a grade of a krupnotsvetkovy chrysanthemum of Long are revealed, a melkotsvetkovy chrysanthemum Reagan. The maximum number of a myzus persicae was noted in a phase of cracking of buds of a chrysanthemum.