PROGENY PERFORMANCES OF A THREE GENERIC HYBRIDIZATION OF UPLAND RICE(Oryza sativa)/BARNYARD GRASS(Echinochloa caudata)//SORGHUM(Sorghum bicolor) Contents of two coumarins in Ipomoea cairica and their effects on Pomacea canaliculata, Orzya sativa, and Echinochloa crusgalli A Study on the Allelopathic Effect of Water Extracts from Aerial Part of Legume Herbages on Germination and Seedling Growth of Barnyard Grass STUDY ON SEED SET AND HETEROSES OF DISTANT CROSS OF UPLAND RICE( Oryza sativa) ×LONG-AWN-BARNYARD-GRASS( Echinochloa caudata) Studies of biological traits and karyotype of two barnyard grass variety