Vol. 12, Issue 12 (2023)

Author(s):
SB Gowdar, Sujay Hurali and Narappa G

Abstract:
According to reports, the blast disease is a significant barrier to rice production and can seriously harm crop yield. Consequently, it is necessary to manage crops effectively from the outset of disease development, which can be ensured by using the right fungicides. Standard agronomic practices were implemented for the Kharif 2016-17 and 2017-18 cultivation seasons in order to determine the impact of the fungicides Azoxystrobin 120 + Tebuconazole 240 SC on the Blast (Pyricularia oryzae) of rice. The fungicides were applied as foliar spray treatments in the replicated plots shortly after the appearance of blast disease in the main field. The plots were routinely checked to monitor the spread of the disease, and two more sprays were administered at 15-day intervals. Ten randomly chosen hills per plot were used to record crop observations for disease incidence and the effectiveness of molecules in suppressing these diseases. Based on the diseases' scores according to the disease rating scale, observations were made. The fungicide Azoxystrobin 120 + Tebuconazole 240 SC, applied foliar application at 676 to 830 ml/ha, effectively reduced the incidence of blast disease and increased rice yield. All of the observation days Revealed that the fungicides Azoxystrobin 120 + Tebuconazole 240 SC @ 676 ml/ha and Azoxystrobin 120 + Tebuconazole 240 SC @ 830 ml/ha were performing similarly. Therefore, it can be concluded that the fungicide Azoxystrobin 120 + Tebuconazole 240 SC @ 830 ml/ha is effective in managing the blast diseases based on the effectiveness and economics of fungicide use in rice.