Management of grain discoloration of rice with solvent-free EC formulations of neem and pungam oils.
Rajappan, K.; Ushamalini, C.; Subramanian, N.; Narasimhan, V.; Abdul Kareem, A.;
Phytoparasitica Year: 2001 Vol: 29 Issue: 2 Pages: 171-174 Ref: 15 ref.
2000
บทคัดย่อ
Neem (Azadirachta indica) and pungam oil-based emulsifiable concentrate (EC) formulations developed at Tamil Nadu Agricultural University, India, were evaluated for their efficacy to inhibit the mycelial growth of the fungi Helminthosporium oryzae [Cochliobolus miyabeanus] and Pyricularia oryzae causing grain discoloration on rice under in vitro conditions. All three formulations viz., neem oil 60 EC (acetic acid), neem oil 60 EC (citric acid) and neem oil + pungam oil 60 EC (citric acid), inhibited mycelial growth of the pathogens. They were effective even after 9 months of storage. These formulations effectively controlled the grain discoloration of rice.