Soybean Phakopsora pachyrhizi

Schoen, D.J. J.J. Burdon A.H.D. Brown.. Resistance of Glycine tomentella to soybean leaft rust Phakopsora pachyrhizi in relation to ploidy level and geographical distribution. Theor. Appl. Genet. 1992, 83, 827-832. 

Many diseases and insects through premature senescence or plant death can indirectly affect soybean seed quality. Soybean rust, caused by Phakopsora pachyrhizi, attacks soybean leaves primarily, but not seed, leading to defoliation and early senescence. Yield losses are due to a reduction in seed number and seed size. Seed size losses of 12 to 20% can occur (Arias et al., 2005 Dupleich et al., 2005). 

Latin America has gained increasing importance for triazole fungicides because of the arrival of a new devastating disease, soybean rust Phakopsora pachyrhizi), in Brazilian soybean production. 

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