Yield Gap Analysis of Blackgram Through Cluster Frontline Demonstrations in Salem District of Tamil Nadu

Background: Blackgram is an important pulse crop in Tamil Nadu, cultivated under both irrigated and rainfed conditions. Traditional broadcasting of seeds often results in uneven plant populations and inadequate moisture distribution, leading to poor crop growth and yield. In the Salem district, the technology gap has been a major challenge to enhance blackgram production. To address this issue, a project was initiated at the Krishi Vigyan Kendra (KVK) in Salem, with the primary aim of boosting production and productivity through cluster frontline demonstrations (CFLDs) adopting the latest technologies. Methods: The project systematically assessed the technological gaps in various aspects of blackgram cultivation, with the specific objective of increasing blackgram production. A total of one hundred frontline demonstrations were conducted in five villages across Salem district viz., Mallikundam, Thumbathulipatti, Kongupatti, Anniyampatti, using blackgram variety VBN 8 blackgram covering an area of 50 hectares in farmers’ fields. The interventions included the distribution of blarckgram variety VBN 8 seeds, Pulse Wonderand mechanized sowing. Result: Demonstrations showed 81.50% increase in yield as compared to traditional farming practices. This highlighted the potential for achieving higher yields through the dissemination of scientific knowledge among farmers, provision of quality seeds, need-based inputsand precision application of these inputs. The combination of technical interventions such as designer seeds, application of TNAU Pulse Wonderand biofertilizers, along with scientific guidance, played a pivotal role in enhancing the yield potential of blackgram.