Nipika Rongpharpi, Nikhilesh Baruah, Jayanta Kalita, Hemendra Choudhury, Pallab Kumar Sharma, Sobha Dutta Deka
A field experiment was conducted in the research field of the All India Coordinate Research project on Dryland Agriculture, Biswanath Chariali center, Biswanath College of Agriculture, Assam Agricultural University during the rabi season of 2020-21 to assess intercropping indices, yield performance and economics of rajmah based intercropping system under the rainfed situation of North Bank Plain Zone of Assam. The competitive behavior of component crops in the different intercropping systems was determined in terms of land equivalent ratio (LER), relative crowding coefficient (RCC), aggressivity (A), and monetary advantage index (MAI). The results revealed that the plant height and number of primary branches per plant were recorded maximum in sole rajmah irrespective of all intercropping treatments. Rajmah + lentil (2:1) ratio of intercropping system have the highest aggressivity value (+1.19 & -1.19 respectively) followed by rajmah + linseed (2:1) ratio with aggressivity value of (+1.04 & -1.04) and the lowest was observed in rajmah + linseed (1:1) ratio (+0.04 and -0.04 respectively). The treatment rajmah + lentil (2:1) intercropping system was also found to be more economical and had the highest monetary advantages index (Rs. 6012.08/-). Among the intercropping treatments, the relative crowding coefficient was >1 in rajmah grown with linseed and lentil in both 1:1 ratio and 2:1 ratio indicating yield advantage. Rajmah intercropped with lentil under the 2:1 ratio recorded the highest land equivalent ratio (1.18) and rajmah equivalent yield (13.46 qha-1). Economic analysis of the intercropping system also resulted in the highest net return of Rs. 63,942.00 per ha and benefit: cost ratio of 2.93 under rajmah + lentil (2:1) ratio and the lowest was recorded under rajmah + toria (2:1) with a value of the net return of Rs.10,259.00 and B: C ratio of 1.31.
Aggressivity, benefit-cost ratio, Intercropping, Land equivalent ratio, Relative crowding coefficient
Cite this paper
Nipika Rongpharpi, Nikhilesh Baruah, Jayanta Kalita, Hemendra Choudhury, Pallab Kumar Sharma, Sobha Dutta Deka. (2022) Assessment of Intercropping Indices, Yield Performance, and Economics of Rajmah-based Intercropping System Under Rainfed Conditions in North Bank Plain Zone of Assam. International Journal of Agricultural Science, 7, 92-101