Abstract
During three years was monitored influence of treatment matter containing increased number calcium of extent attack of pest. Treat variant were assessed to two controles: 1) no treat control and 2) control treat by fungicide at time of bloom.
It was found, that application of monitored matter with higher calcium content at season of butonisation (BBCH 50) and bloom (BBCH 61-65) reduce pest attack in relation to no treat control.