Productivity and profitability of brinjal - onion intercropping relay with snake gourd

Abstract

The experiment was carried out on brinjal-onion intercropping with relay snake gourd without trellis at Regional Agricultural Research Station (RARS) Jamalpur during 2020-21 and 2021-22 to find out the suitable crop combination for increasing crop productivity, profitability and maximization of land utilization.The treatments were.T₁ = Brinjal (100 %) + 6 row onion + relay snake gourd (1m×1.5m), T ₂= Brinjal (100%) + 6 row onion + relay snake gourd (2m×1.5m), T₃ = Brinjal (100%) + 6 row onion + relay snake gourd(3m×1.5m), T₄ = Brinjal paired row+12 row onion + relay snake gourd(1.75m×1.5m) and T₅ = Sole brinjal (100cm×60cm), T₆ = Sole onion (10cm×6cm) and T₇ = Sole snake gourd (1m×1.5m).Brinjal (BARI Begun-8), Onion (BARI Piaj-4) and Snake gourd (BARI Chichinga-1) were used as test materials. The experiment was laid out in a randomized complete block design with five compact replications. Brinjal was the main crop, onion and snake gourd were intercrop and relay crop in the study. Significantly the higher yield was obtained in sole crops. Treatment, brinjal paired row + 12 row onion with relay snake gourd (T₄) gave the highest equivalent yield of brinjal, onionand snake gourd 51.28, 42.74 and 51.28 tha-1, respectively which provided yield advantages of 85, 128 and 142 % over their respective sole crops. The highest land equivalent ratio (2.16), gross return (Tk 12,82,000 ha-1) and benefit cost ratio (5.13) were achieved in T₄.

Bangladesh J. Agril. Res. 50(1): 1-12, March 2025