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Helminthosporium sativum: disease complex on wheat and sources of resistance in Zambia



Helminthosporium sativum: disease complex on wheat and sources of resistance in Zambia



Wheat production constraints in tropical environments Proceedings of the international conference, Chiang Mai, Thailand, 19-23 January 1987: 175-186, 391, 403



A method for scoring disease severity is described. A double-digit score is obtained by assessing severity of H. sativum (Cochliobolus sativus) incidence on the plant in the field 5-25 days after anthesis and on the grain, and this is combined with scores for other diseases (Xanthomonas campestris, Puccinia and Fusarium) obtained at various stages 15-30 days after heading. Negative correlations were obtained between H. sativum scores and yield component values.

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