Efficacy of plant extracts in controlling wheat leaf rust disease caused by Puccinia triticina

Publication date: Available online 4 October 2016 Source:Egyptian Journal of Basic and Applied Sciences Author(s): Yasser M. Shabana, Atef A. Shahin, Mohammed M. El-Sawy, Ibrahim S. Draz, Ahmed W. Youssif The efficacy of eight plant extracts (garlic, clove, garden quinine, Brazilian pepper, anthi mandhari, black cumin, white cedar and neem) in controlling leaf rust disease of wheat was investigated in vitro and in vivo. In vitro, all treatments inhibited spore germination by more than 93%. Neem extract recorded 98.99% inhibition of spore germination with no significant difference from the fungicide Sumi-8 (100%). Under greenhouse conditions, seed soaking application in neem extract (at concentration of 2 ml/L) resulted in 36.82% reduction in the number of pustules/leaf compared with the untreated control. Foliar spraying of plant extracts on wheat seedlings decreased the number of pustules/leaf. Foliar spraying of plant extracts four days after inoculation led to the highest resistance response of wheat plants against leaf rust pathogen. Spray application of wheat seedlings with neem, clove and garden quinine extracts, four days after inoculation with leaf rust pathogen completely prevented rust development (100% disease control) and was comparable with the fungicide Sumi-8. Foliar spray application of wheat plants at mature stage with all plant extracts has significantly reduced the leaf rust infection (average coefficient of infection, ACI) compared with the untrea...
Source: Egyptian Journal of Basic and Applied Sciences - Category: Science Source Type: research