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Reference Report for SoyBase73101927
Title:Influence of sowing date and plant population of soybean on the disease intensity due to Myrothecium roridum and Phyllosticta sojicola
Authors:Singh, S.N.
Source:Ann. Plant Prot. Sci. 1999, 7(1):55-58
Abstract:Two field trials were conducted at the Zonal Agricultural Research Station, Ujjain, Madhya Pradesh, India, during kharif seasons of 1992 and 1993 to determine the effects of variety (MACS-75, JS 76-259, DS 76-1-29, PK-472, Bragg and JS 72-74), sowing date (June 25, July 8 and 23) and plant density (0.2, 0.4 and 0.6 million/ha) on the incidence of leaf spot of soyabeans caused by Myrothecium roridum and Phyllosticta sojicola [Pleosphaerulina sojicola]. There were significant differences in disease severity between sowing dates and varieties. The early sown soyabean crop (25 June) exhibited less severe disease than that sown on July 8 and 23. Similarly, disease severity was lowest at a planting density of 0.2 million/ha than at 0.4 and 0.6 million/ha plant population. The interactions of variety with sowing date and variety with plant density were statistically non-significant.






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