_____________________________________________________________________________________________________ *Corresponding author: E-mail: fhrahmancal@gmail.com; Journal of Experimental Agriculture International 42(6): 23-29, 2020; Article no.JEAI.57768 ISSN: 2457-0591 (Past name: American Journal of Experimental Agriculture, Past ISSN: 2231-0606) Impact of Technology Demonstration on Productivity of Greengram (Vigna radiata L.) in North Eastern Ghat Zone of Odisha S. K. Samantaray 1 , F. H. Rahman 2* , P. K. Panda 1 , D. Patri 1 and S. Sahu 1 1 Krishi Vigyan Kendra Ganjam 1, Odisha University of Agriculture and Technology, Odisha, India. 2 ICAR - Agricultural Technology Application Research Institute Kolkata, Bhumi Vihar Complex, Salt Lake, Kolkata – 700097, India. Authors’ contributions This work was carried out in collaboration among all authors. Author SKS designed the study, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Authors PKP and DP collected the data through interview schedule. Author FHR managed the analyses of the study and edited first draft of the manuscript. Author SS managed the literature searches. All authors read and approved the final manuscript. Article Information DOI: 10.9734/JEAI/2020/v42i630533 Editor(s): (1) Dr. Edward Wilczewski, UTP - University of Science and Technology, Poland. Reviewers: (1) Jeverson Santiago Quishpe Gaibor, Salesian Polytechnic University, Ecuador. (2) Edwin Fernando Vásquez Vásquez, Peruvian Union University, Peru. Complete Peer review History: http://www.sdiarticle4.com/review-history/57768 Received 18 April 2020 Accepted 24 June 2020 Published 04 July 2020 ABSTRACT The study was conducted to recognize the technological impact of proper package of practice for the production and productivity of Greengram in comparison to the traditional practices followed by the farmers of Ganjam district of Odisha. To enable impact assessment 100 farmers of which 50 farmers followed technology demonstration and 50 followed traditional method of cultivation were selected for the study. The results of technology demonstrations showed that farmers got increased productivity of Greengram notably by switching over to improved variety and adoption of improved production technology. From the experiment it was observed that the improved Greengram variety IPM 02-14 recorded the 42.5% higher yield compared to the local variety PDM-139. Technology gap and the technology index values were 230 kg/ha and 23%, respectively. Farmers are experiencing yield loss due to the high incidence of yellow mosaic vein diseases of the crop. The increment in Original Research Article