The present investigation entitled “Effect of plant growth regulators and micro-nutrient on growth and herbage yield of forage sorghum (Sorghum bicolor L.)” was carried out during the Kharif season of 2022, at the G.P.B. Research Farm of the Acharya Narendra Deva University of Agriculture and Technology in Kumarganj, Ayodhya (U.P.). The experiment was laid out in randomized block design with twelve treatments viz. Triacontanol 10 ppm at 30 DAS (foliar spray), Salicylic acid 100 ppm at 30 DAS (foliar spray), 5 Kg Zn /ha soil application, 2 Kg B /ha soil application, 5 Kg Zn /ha +2 Kg B /ha soil application, 5 Kg Zn /ha soil application + Triacontanol 10 ppm at 30 DAS foliar spray, 5 Kg Zn soil application + Salicylic acid 100 ppm at 30 DAS foliar spray, 2 Kg B /ha soil application + Triacontanol 10 ppm at 30 DAS foliar spray, 2 Kg B /ha soil application + Salicylic acid 100 ppm at 30 DAS foliar spray, 5 Kg Zn /ha + 2 Kg B /ha soil application + Triacontanol 10 ppm at 30 DAS foliar spray, 5 Kg Zn /ha + 2 Kg B /ha soil application + Salicylic acid 100 ppm at 30 DAS foliar spray and water spray at the time of PGR application. Results revealed that application of 5 Kg Zn /ha + 2 Kg B /ha soil application + Triacontanol 10 ppm at 30 DAS foliar spray was found more effective to enhance the growth and herbage yield of forage sorghum.
