نتایج جستجو برای: pythium ultimum

تعداد نتایج: 1595  

2015
Na-Bo Sun Jian-Zhong Jin Fang-Yue He

A series of some novel 1,2,4-triazol-5(4H)-one derivatives were designed and synthesized under microwave irradiation via multistep reaction. The structures of 1,2,4-triazoles were confirmed by (1)H NMR, MS, FTIR, and elemental analysis. The antifungal activities of 1,2,4-triazoles were determined. The antifungal activity results indicated that the compounds 5c, 5f, and 5h exhibited good activit...

Journal: :Phytopathology 1997
D S Kim R J Cook D M Weller

ABSTRACT Strain L324-92 is a novel Bacillus sp. with biological activity against three root diseases of wheat, namely take-all caused by Gaeumannomyces graminis var. tritici, Rhizoctonia root rot caused by Rhizoctonia solani AG8, and Pythium root rot caused mainly by Pythium irregulare and P. ultimum, that exhibits broad-spectrum inhibitory activity and grows at temperatures from 4 to 40 degree...

Journal: :Journal of Phytopathology 2023

Abstract The blueberry industry is one of the successful and expanding agricultural cropping systems in South Africa. As a result this growth, research into identifying plant disease agents has become increasingly important, yet there are relatively few scientific reports published on subject country. aim study was to identify causal stunting leaf scorch plants evaluate their pathogenicity. Roo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان 1389

بیماری پژمردگی و بوته میری یکی از مهمترین بیماری های طالبی در دنیا بوده که هر ساله خسارت قابل توجهی را به این محصول وارد می نماید. به منظور شناسایی عوامل قارچی مولد این بیماری در دو سال زراعی 88- 89 از مزارع طالبی مناطق مختلف استان خراسان رضوی از جمله شهرستان های کاشمر، مه ولات، خواف، تربت جام، نیشابور، فریمان و مشهد بازدید به عمل آمد. نمونه برداری از خاک، ریشه ها و بوته های دارای علائم بیماری ...

Journal: :تولید گیاهان زراعی 0
الهام نیک منش دانشجوی کارشناسی ارشد گروه اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان هادی پهلوانی دانشیار گروه اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

damage of the pathogens is one of the main limitations for cultivating and production of safflower. this study was performed to investigate reaction of safflower genotypes to pythium ultimum during 2009 and 2010 under field conditions. the study was done in two parts, selection and evaluation of parents (part 1; 2009) and evaluation of the progenies (part2; 2010). in the first year, the experim...

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