Somayeh Ghahari - Department of Organic Chemistry, Faculty of Chemistry, Universityof Mazandran, Babolsar, Iran
ghorban ali nematzadeh - Genetics and Agricultural Biotechnology Institute of Taberestan (GABIT), Mazandaran, Sari, Iran. P.O.Box: ۵۷۸.
heshmatollah alinezhad - Department of Organic Chemistry, Faculty of Chemistry, Universityof Mazandran, Babolsar, Iran
Sajjad Ghahari - Biology Department, Faculty of Science, University of Zabol, Zabol, Iran.

Crop protection plays a vital and integral role in modern agricultural production. The ever-increasing demands on yield and the intensification of farming practices have increased the problem of pest damage, and hence control. The use of chemical pesticides has been the main fungal controlling approach during recent decades, but the widespread use of such chemicals has significant drawbacks, such as the development of strain resistance to insecticides (Garriga and Caballero, 2011), increased costs, handling hazards, concerns about insecticide residues, and great threats to both human and environmental health. Public awareness of these problems has increased the interest in finding less hazardous insecticides to replace dangerous synthetic chemicals insecticides (Sutherland, 2002). One such alternative is the use of botanical insecticides (Baskar et al., 2009). The aim of this research is investigate effect of some plant extracts on rice blast disease.

Plant extracts, Rice blast, Fungal, Crop protection