Effect of nitrogen and potassium on leaf spot disease development of barley caused by Helminthosporium sativum (in Iraq)
1986
Jalal, T.K.
The aim of this study was to find out the effects of various levels of N and K on the leaf spot disease, caused by Helminthosporium sativum. Some of the results were: High levels of N and K decreased significantly the number of leaf spots caused by H. sativum in the two cultivars. At high level of N significant differences were found in the percentages of barley seed germination and in the lengths of radicals, and high levels of N and K significantly decreased the mycelial growth of the fungus, spore germination and length of the germ tubes
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