Vol. 12, Issue 2 (2023)

Author(s):
Dr. Nitin Kumar Toorray

Abstract:
Application of micronutrients as fertilizer can play an important role in the management of various fungal and bacterial diseases. Therefore, the study was undertaken to manage the rice sheath blight disease of rice by application of the micro nutrients in soil under flooded conditions. In the present investigation, the nutrients i.e. Cu as Copper sulphate, Zn as Zinc sulphate and Silicon as Silicon dioxide (SiO₂) were mixed into pot soil in required quantity. The experiment was carried out in vitro and pot conditions in completely randomized design (CRD) with four replications during the kharif seasons 2016 and 2017. Effect of application of micronutrients under in vitro and pot study showed that the application of copper sulphate, zinc sulphate and silica at 500 ppm and in vitro significantly reduced the growth of R. solani. Whereas, in pot study, the mixing of copper sulphate in soil prior to transplanting effectively reduced the sheath blight PDI (38.34%) as compared to control treatment (55.56%) PDI.