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August 16, 2025Open Access

Impacts of Cluster Frontline Demonstrations on Yield and Economics of Blackgram in Southern Part of Tamilnadu, India

Key Points

The average yield of blackgram increased by 25% with improved technologies compared to traditional methods.
Demonstrations achieved a mean yield of 8.5 q/ha versus 6.4 q/ha under conventional farming.
The study utilized cluster frontline demonstrations over 60 hectares with 150 active farmer participations.
The adoption of improved technologies showed significantly higher net returns and better B:C ratios for farmers.

Abstract

Cluster Frontline Demonstrations were laid out to upscale improved technologies for enhancing the productivity of blackgram during rabi 2022-23 which was 25 per cent higher as compared to farmer’s practices (6.4 q/ha). The study exhibited reduced mean extension gap (2.32 q/ha) and technology gap (5.07 q/ha) with lower technology index (42.58 %) due to the higher yield realized in VBN 11 demonstration plots. The average mean net return (Rs. 38049.5/ha) and mean B: C ratios (2.09) were higher in improved technologies than the farmers’ practices (Rs.21282.5/ha) and mean B: C ratio (1.57). The present study resulted in substantial increase in productivity and returns to the farming community through the adoption of improved technologies.

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