Effect of kharif rice establishment methods on various rice fallow cropswith different irrigation systems

Abstract

Crop performance in rice fallows was greatly affected by kharif rice establishment and agro techniques during rabi.Objective of the study to identify alternate potential crops to rice in order to intensify rice fallows in irrigation command area.A field experiment was conducted in Vertisol at the Agriculture Research Station, Dhadesugur, Karnataka during kharif and rabi2018-19. Experiment was laid out in split-split with thirteen replications in kharif and three replications in rabi. Treatmentscomprised of transplanted rice (TPR) and direct seeded rice (DSR) establishment methods in kharif, while drip and surfaceirrigation methods for pulses in rabi as sub factor and different pulses are as sub-sub plots. Results indicated that there wasno significant yield difference between TPR and DSR in kharif. Drip irrigation had significant effect on yield and WUE oversurface irrigation for crops grown in rice fallows. Whereas, DSR-cowpea recorded significantly greater rice equivalent yield(REY) (5140 kg ha-1) system productivity (44.6 REY kg ha-1 day-1). Whereas, DSR-dolichos bean has gave higher net profit( 85603 ha-1) and BC ratio (1.94). Results inferred that DSR in kharif subsequently cowpea, dolichos/lablab or rice bean arehighly productive and profitable over traditional rice-rice in the region.