Author: D.K. Debata and L.K. Das
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Collar rot disease caused by Aspergillus nigervan Teighem is an important seed- and soil-borne disease of groundnut (Arachis hypogaea L.) that affects seed quality and reduces yield. The experiments were conducted in Kharif in RRTTS, G. Udayagiri, Odisha in 2021 and 2022. The effects of seed treatment, application of neem cake to soil and inoculation of bioagents in FYM and soil drenching with fungicides should be studied. The treatments were carried out on seeds of Trichoderma viride (5 g/kg seeds) and Pseudomonas fluorescens (10 g/kg seeds) with 1.5 q/ha of neem cake applied to the soil and 4 kg of bioagents applied to the soil in 10 qtl FYM, incubated at 30% humidity. for 15 days in the stable and applied twice on the 15th and 30th days after sowing and scattering validamycin (0.2%) in the soil and (metalaxyl + mancozeb) (0.2%)] on the 15th and 30th day after sowing (DAS). The rate was (61%) and highest pod yields of 1557 kg/ha were recorded with soil application of Neemcake@1.5q/ha 15 days after sowing and during sowing + application of 4 kg of bioagent in 10q FYM to the soil, incubated in the stable at 30% humidity for 15 days and application twice after 15 and 30 days after sowing, then seed coating with T. viride @ 5 g/kg seeds + soil By applying 4 kg of bioagent in 10 qtl FYM, incubated at 30% humidity under dispersion conditions for 15 days, and two applications on the 15th and 30th days after sowing, diseases can be prevented up to 52% with a pod yield of 1510 kg/ha.
Collar rot, Aspergillus niger, groundnut, FYM
Percentage control of disease was highest (61%) and pod yield (1557 kg/ha) was recorded by application of neem cake @1.5q/ha at 15 days after sowing and at the time of earthing up + Soil application with (Metalaxyl + Mancozeb) @ 0.2% twice at 15 DAS and 30 DAS. Integration of bioagents and fungicides in farmers field could be undertaken in future.
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