Impact of Cluster Front Line Demonstrations on Productivity, Profitability and Yield Gap of Blackgram in Nellore District of Andhra Pradesh, India

The Cluster Frontline Demonstrations (CFLDs) on Blackgram var. TBG-104 was conducted by Krishi Vigyan Kendra (KVK), Nellore to find out the seed yield, technological gap, extension gap, technology index and economics during 2020 to 2022 (3 years) covering 150 farmers. The result of the study revealed that the yield of blackgram was found to be 953, 1000 and 1103 kg/ha during the years 2020-21, 2021-22 and 2022-23, respectively as compared to 752, 760 and 900 kg/ha, respectively under the farmer's practice. The increase in yield over farmers practice was found to be 25.1, 33.4 and 22.6% respectively during the years 2020-21, 2021-22 and 2022-23. The 3-year average data on the technology gap, extension gap and technology index were found to be 980 kg/ha, 215 kg/ha and 49% respectively. The average net return and B:C ratio in demonstrations was found to be Rs. 27439.00 /ha and 1.79 as against Rs.13334 and 1.38 in farmer’s practice. The findings show that utilising TBG 104 over farmer’s varieties could increase the seed output of Blackgram in the Nellore district and CFLD could be a useful method to reduce yield disparities.