AGROTECHNICAL METHOD TO PREVENT “BOIS NOIR”SPREAD

In the Republic of Moldova the defeat of bushes with a disease of phytoplasmic eti-ology – Bois noir occurs everywhere. The article discusses and analyzes the factors contributing to the spread of this disease on grapevine plantations. This process is facilitated by plants-reserves of phyto-plasm, leafhoppers-carriers and changes in climatic conditions. As a result of the stud-ies carried out, plants reserves of phyto-plasma Bois noir were identified: Convol-vulus arvensis L., Fallópia convólvulus L., Chenopodium bonus-henricus L., Rosa L., Ulmus L. Long-term studies have shown that the destruction of weeds on the plan-tation leads to the removal of infection res-ervoir plants and the larvae of the leafhop-per-vector feeding on weeds on the roots. Therefore, systematic soil cultivation in the fight against weeds is an agricultural tech-nique that prevents the spread of Bois noir.