Status of soybean plant diseases at R3, R5 and R7 stage in climate condition of Jabalpur (Madhya Pradesh) Kurmi Swarna, Bhale M.S., Gupta Pramod Kumar*, Mishra Shubham Department of Plant Pathology, College of Agriculture, JNKVV, Jabalpur-482004, M.P., India *Correspondence email: pkgtaxo@gmail.com
Online published on 28 November, 2023. Abstract Madhya Pradesh is known as the soya state it contributes maximum to the overall production of India. But in the last few years due to continuous changes in climate conditions (abiotic) and biotic factors soybeans have suffered a lot and Madhya Pradesh is set to lose the title as a soya-state. To understand the abiotic threats that are responsible for decreasing productivity, production, and quality of seeds, the present study survey was conducted on different blocks, research fields, and varieties as well. Pod blight caused by Colletotrichum dematium was noticed among 21 varieties in the range of 3.0-35.0% (2018) and 7.0-29.0% (2019), with average temperature 18.7 °C and RH 54.15% (2018) and temperature (19.3 °C) and RH 69.5% (2019), respectively. In all 6 mycoflora were found associated with blighted pods and up to 77% of pods were affected. The association of C. dematium with seeds ranged from 25.0% (JS 80-21) - 32.0% (JS 95-60). The incidence of leaf diseases at the R3, R5, and R7 stage included the infection caused by Cercospora sojina and C. dematium. At the R5 stage dry root rot (Rhizoctonia bataticola = Macrophomina phaseolina) was recorded in the range of 4.0 to 19.0%. The incidence of dry root rot in the Agricultural Engineering Farm ranged from (16.0 to 19.0%), in the KN Farm (21.0 to 22.0%), and in the Adhartal Tank Farm (21.0 to 29.0%). The incidence of dry root rot was higher in JS 335 (29.0%). Top Keywords Disease, Mycoflora, Soybean, Incidence, Investigation. Top |