Control of Wheat Rust by Leaves Extract of Poisonous Phanergamic Plants

The efficacy of eight plant extracts (garlic, clove, garden quinine, Brazilian pepper, anthi mandhaari, 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 untreated control and neem was the most effective treatment. This was reflected on grain yield components, whereas the 1000-kernel weight and the test weight were improved whether under one-or two-spray applications, with two-spray application being more effective in this regard. Thus, it could be concluded that plant extracts may be useful to control leaf rust disease in Egypt as a safe alternative option to chemical fungicides.

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

Shabana

Abdalla

Shahin

et al. 2017

Egyptian Journal of Basic and Applied Sciences

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Evaluating the effects of cold water diffusates againstXanthomonas oryzaePv.Oryzaecausing bacterial leaf blight (BLB) in rice

Jabeen

Ashraf

Ahmad

2009

Archives Of Phytopathology And Plant Protection

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The crude extracts of 63 plants were used for testing antibacterial activity against Xanthmonas oryazae Pv. oryzae that causes bacterial leaf blight (BLB) in rice plants. Only ten aqueous extracts of botanicals (Thuja orientalis, Prunus domestica, Citrus limon, Allium sativum, Vitis vinefera, Mangifera indica, Phyllanthus emblica, and Terminalia chebula) showed maximum activity against Xanthmonas oryazae in a plate agar diffusion assay. On a detached leaf, in a glasshouse and in a field assay, two potential plant extracts, namely Allium sativum, and Citrus limon showed maximum efficacy in terms of controlling BLB lesions in rice. After isolation through fractionation of the crude extract of Allium sativum, the bioactive compound was purified and characterized as 8-amino(-8-butoxyoct)-2-(enyldisulfanyl)-3-(2hydroxy-4-methoxyphenylprop-1-enyl) benzene-1,3-diol.

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Efficacy of Organically Acceptable Materials for Control of Mummy Berry Disease on Lowbush Blueberries in Maine

McGovern

Annis

Yarborough

2012

International Journal of Fruit Science

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Control of Wheat Rust by Leaves Extract of Poisonous Phanergamic Plants

Cited by 6 publications

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

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

Evaluating the effects of cold water diffusates againstXanthomonas oryzaePv.Oryzaecausing bacterial leaf blight (BLB) in rice

Efficacy of Organically Acceptable Materials for Control of Mummy Berry Disease on Lowbush Blueberries in Maine

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