Management of Root Rot Disease in Soybean
Abstract
Afield experiment was conducted at Agricultural Research Station, S. D. Agricultural University, Ladol during 2019-20, 2020-21 and 2021-22 for management of root rot disease in soybean. The eight different treatments were evaluated. Based on pooled data of three years, the result revealed that minimum mean disease incidence (2.45%) was observed with seed treatment of Penflufen 13.28 % + Trifloxystrobin 13.28 % FSfound lowest percent disease incidence in throughout the crop season in all three years followed by seed treatment with Thiophanate Methyl 45 % + Pyraclostrobin 5 % FS (2.95%).
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Introduction
Soybean (Glycine max L.) having both protein and oil, is an important oilseed crop. Cultivation of soybean in India was negligible till 1970, but Production increased rapidly thereafter, crossing over 11.87 million tonnes in 2023-24 (Anon. 2023). In India, annual losses due to various diseases are estimated as 12 percent of its total production (M. Santha, 2007). More than hundreds of pathogens are known to affect soybean where sixty-six fungi, six bacteria, eight viruses and seven nematodes (Sinclair, 1978). Among these, soil borne diseases like root rotor collar rot caused by Rhizoctonia sp., Sclerotium rolfsii and Fusarium sp. are gaining more importance as they reduce plant population in the field resulting in the heavy yield losses. The pathogens are soil inhabitants and polyphagous facultative parasites. Muthusamy and Mariappan (1991) reported 77 percent losses due to Rhizoctonia bataticola and 14 – 74 percent due to Sclerotium rolfsii. Manglekar and Raut (1997) have reported 30 percent yield loss in soybean due to Rhizoctonia root/stem rot in Vidharbha region of Maharashtra. In Gujarat, this disease occurs every year and contributing to yield loss in unsprayed crop of the farmers. Therefore, an experiment was conducting to investigate the performances of fungicides under this agro-climatic region which can reduce loss with effective and economic approach.
Conclusion
Treat the seed with Penflufen 13.28 % + Trifloxystrobin 13.28 % FS at the rate of 1 ml/kg of seed for effective and economic management of root rot disease of soybean.
