Test of biological preparations on sunflower in Tambov region

Sunflower seeds and plants treatment with of biological preparations vermikulen, D 7-1, bacillin and Oif 2-1 reduces distribution of all forms of white rot in 3-5 times and promotes increase of crop productivity on 0.3-0.36 t ha-1. Application of these biological preparations can be considered as the important factor of stabilization of sunflower productivity at disease affection.