Vol. 12, Issue 5 (2023)

Author(s):
HA Shekhada, Hemant Sharma, PR Patel and RL Joshi

Abstract:
A study was conducted at the Department of Plant Pathology, N. M. College of Agriculture, NAU, Navsari during 2021-22 to find out the efficacy of different fungicides, plant extracts and bioagents against A. alternata caused alternaria blight of coriander under in vitro condition. In laboratory study among non-systemic fungicides, maximum mycelial growth inhibition was observed in copper oxychloride 50 WP at 2000 ppm (80.37%) followed by mancozeb 75 WP at 2000 ppm (75.93%). Whereas, among systemic fungicides, Propiconazole 25 EC at both concentrations completely inhibited the mycelial growth followed by azoxystrobin 23 SC at 500 ppm (33.33%). A. indica (Neem) at 10 percent concentration gave 51.85 percent inhibition and proved significantly superior over rest of the plant extracts tested. The maximum mycelial growth inhibition was recorded in T. harzianum Rifai. NAU isolate 77.50 percent.