The yield gaps between cluster frontline demonstration (CFLD) and Farmers practice extent of technology adoption and extension gap. Krishi Vigyan conducted cluster Frontline demonstration on chickpea, Kendra, Nalanda, Bihar during the year 2015-16, 2016-17, and 2017-18 in 16, 07 and 2 villages, respectively. Results of CFLD reveals that the variety (GNG 1581) recorded the highest grain yield (19.78q/ha). It was 23 percent higher over the farmer practice (16.12q/ha). An average yield of 18.60q/ha was recorded in cluster frontline demonstration and in farmer practices, it was just 14.73 q/ha. Thus,the average technology gap, extension gap and technology index of 5.39 q/ha, 4.60 q/ha and 23.67 percent, respectively were obtained between demonstration and farmer practices. The average yield of chickpea increased 26.66 percent over farmer practices, while the year wise variation in yield increased from 17.00 to 40.00 percent.
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Singh et al. (2020) studied this question.