1Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior-474 002, Madhya Pradesh, India
2Krishi Vigyan Kendra, Ashoknagar-473 331, Madhya Pradesh, India
*Corresponding Author: Rajni Singh Sasode, Department of Plant Pathology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior-474 002, Madhya Pradesh, India, Email: rnikumujjain@gmail.com
Online published on 10 March, 2026.
Clusterbean [Cyamopsis tetragonaloba (L.) Taub] commonly known as ‘guar’ means “cow food” is an annual arid and semi-arid legume crop belonging to the family leguminaceae.
Two field experiment were conducted during 2019-2021 to find out the most effective fungicide for the management of Alternaria leaf blight in Cluster. Seven fungicides viz., Tebuconazole 250 EC @ 0.1%, Difenconazole 25 EC @ 0.1%, Hexaconazole 5 EC @ 0.1%, Propiconazole 25 EC @ 0.1%, Chlrothalonil @ 0.2%, Trifloxystrobin 50% WG@ 0.1%, Mancozeb 75% WP @ 0.2% were evaluated for their efficacy aganist cluster bean Alternaria blight.
In the year 2019 during Kharif season the foliar spray with Tebuconazole 250 EC @ 0.1% was found to be the most effective fungicide at initiation of flowering and at pod stage with minimum disease severity (9.87 and 12.00%) and the maximum seed yield and straw yield of 2077 and 3994 kg/ha, respectively. During Kharif-2020 same trends was observed with Tebuconazole 250 EC @ 0.1% in reducing the severity of the disease foliar spray of Tebuconazole also recorded the highest B: C ratio of 4:5 and 4.73 during 2019-20 and 2020-21 respectively.
Alternaria leaf blight, Cluster bean, Fungicide, Management
