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Beed, Fen D.Sikirou, R.Bandyopadhyay, RanajitTwizeyimana, M.Miller, S.[The International Plant Diagnostic Network in West Africa: how to link farmers, extension, research and governments to improve preemptive disease control to safeguard food security and trade]The International Plant Diagnostic Network in West Africa: how to link farmers, extension, research and governments to improve preemptive disease control to safeguard food security and trade

Nigeria is the only country in West Africa where soybean rust, caused by Phakopsora pachyrhizi, has been officially reported (1). During a disease survey in Ghana during October 2006, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpent sori exuding urediniospores) ...


Bandyopadhyay, RanajitOjiambo, P.Twizeyimana, M.Asafo-Adjei, B.Frederick, R.D.Pedley, K.F.Stone, C.L.Hartman, G.[First report of soybean rust caused by Phakopsora pachyrhizi in Ghana]First report of soybean rust caused by Phakopsora pachyrhizi in Ghana

Nigeria (1) and Uganda (3) are the closest countries to the Democratic Republic of Congo (DRC) where soybean rust caused by Phakopsora pachyrhizi has been reported. In February 2007, during a disease survey in DRC, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpen...


Ojiambo, P.Bandyopadhyay, RanajitTwizeyimana, M.Lema, A.Frederick, R.D.Pedley, K.F.Stone, C.L.Hartman, G.[First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo]First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo

Fourteen soybean accessions and breeding lines were evaluated for resistance to soybean rust caused by the fungus Phakopsora pachyrhizi. Evaluations were conducted in replicated experiments in growth chambers using detached leaves and under greenhouse and field conditions. In growth-chamber exper...


Twizeyimana, M.Ojiambo, P.S.Ikotun, T.Paul, C.Hartman, G.L.Bandyopadhyay, Ranajit[Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi]Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi
Twizeyimana, M.Ojiambo, P.S.Bandyopadhyay, RanajitHartman, G.L.[Use of quantitative traits to assess aggressiveness of Phakopsora pachyrhizi isolates from Nigeria and the United States]Use of quantitative traits to assess aggressiveness of Phakopsora pachyrhizi isolates from Nigeria and the United States
Twizeyimana, M.Bandyopadhyay, RanajitOjiambo, P.Paul, C.Hartman, G.[A detached leaf method to evaluate soybean for resistance to rust: Confeerence Procedings of the National Soybean Rust Symposium in St. Louis, MO. USA. 29 November to 1 December]A detached leaf method to evaluate soybean for resistance to rust: Confeerence Procedings of the National Soybean Rust Symposium in St. Louis, MO. USA. 29 November to 1 December

Soybean rust, caused by Phakopsora pachyrhizi, is an important foliar disease of soybean. Disease severity is dependent on several environmental factors, although the precise nature of most of these factors under field conditions is not known. To help understand the environmental factors that aff...


Twizeyimana, M.Ojiambo, P.Hartman, G. L.Bandyopadhyay, Ranajit[Dynamics of soybean rust epidemics in sequential plantings of soybean cultivars in Nigeria]Dynamics of soybean rust epidemics in sequential plantings of soybean cultivars in Nigeria

Soybean rust, caused by Phakopsora pachyrhizi Syd., is a major disease limiting soybean [Glycine max (L.) Merr.] production in many areas of the world. Yield losses of up to 80% have been reported in experimental plots in Taiwan. Although the disease is not always yield limiting, it has the poten...


Hartman, G.L.Hill, C.B.Twizeyimana, M.Miles, M.R.Bandyopadhyay, Ranajit[Interaction of soybean and Phakopsora pachyrhizi, the cause of soybean rust]Interaction of soybean and Phakopsora pachyrhizi, the cause of soybean rust

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