Effect Of Thiram And Captan Fungicides On Nodulation And Biological Nitrogen Fixation In Soybean
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Fungicides in soil may originate from soil treatment, seed dressing or as run off from foliar sprays. The use of fungicides to prevent seed and root diseases is essential for the production of Soybeans. In the present investigation two seed protectant fungicides Captan and Thiram were used. Effect of fungicides on growth of Rhizobium japonicum was studied. Soybean seeds of two varieties PK-472 and JS-72-44 were treated with the said fungicides. Observations were taken after 21, 30 and 45 days. Results reveal that captan is toxic to the nodule bacterium. So seed treatment with thiram should be followed as a routine.
KEYWORDS:Thiram; captan; fungicides; Rhizobium japanicum; Soybean
