Economic efficiency of using entomophages in protecting potatoes from the Colorado potato beetle

The Colorado potato beetle is a serious pest of Solanaceae crops in our country, especially potatoes. In order to reduce the chemical load field and prevent development resistance chemicals beetle, this paper presents biological methods protection using seasonal colonization by predatory shield bug Picromerus treatments with plant extract amaranth Valentine variety (which, along limiting nutrition larvae stimulates growth leads an increase photosynthetic activity protected plants). Additional treatment extracts recommended during flowering period, which critical for Damage leaves period can lead significant decrease productivity.