Identifying resilient rice based cropping systems involving tuber crops for lowlands

Abstract

The study entitled “Identifying resilient rice based cropping systems involving tuber crops for lowlands” was conducted at Department of Agronomy, College of Agriculture, Vellayani during the period from 2019-2023. The major objectives of the study were to evaluate the performance, in terms of yield and economics, of different rice based cropping systems involving tuber crops in lowlands under different nutrient levels, to analyse weed dynamics, soil health and carbon dioxide emission, and to assess the residual effect on the succeeding virippu rice crop. It could be concluded that, among different rice based cropping systems involving tuber crops in lowlands, rice-rice-sweet potato (C2) performed better in terms of yield, economics and weed control. Grain yield of succeeding crop of rice, recorded with F2 and F1 were comparable. Thus it was concluded that FYM, N and P could be reduced by 25 per cent in rice based cropping systems. Rice-(cassava+bush cowpea)-daincha (C4) recorded significantly higher available nutrients, carbon fractions with less CO2 emission. Hence, rice-(cassava+bush cowpea)-daincha (C4) could be adjudged as the resilient rice based cropping system involving tuber crops in lowlands.