Four granular nentaticides were evaluated for control of the yam nematode, Scutellonema bradys (Steiner &LeHew) Andrassy, on Guinea yam, Dioscorea rotundata Poir, under field conditions prevelant in the tropics. A single application of nematicides (sidedressing) at the rate of 2 kg ai/ha as postplanting treatment at the onset of the rainy season depressed numbers of S. bradys attacking yams dur...

Diosgenin is a steroidal saponin isolated from dioscorea opposita, which has been proven to have anti-cancer, anti-inflammatory, anti-thrombotic and immune system modulating effects in large number of pharmacological tests. also one the important raw materials for synthesis drugs, structural modification diosgenin obtain derivatives can not only improve solubility dissolution, but enhance their...