Productivity and economics of oilseed rape based intercropping systems

Abstract
A field experiment was carried out at Punjab Agricultural University, Ludhiana, to study the productivity and economic returns of different oilseed rape based intercropping systems during rabi 2016–17 and 2017–18. The treatments consisted of three cultivars of oilseed rape (Brassica napus L.) viz., GSC 6, GSC 7 and Hyola PAC 401 intercropped with garden pea (Pisum sativum L.) in 1: 1 (furrow sowing at 60 cm), 1: 1 (flat sowing at 60 cm), 1: 2 (flat sowing at 90 cm) row proportions, sole GSC 6 (flat sowing at 30 cm), sole GSC 7 (flat sowing at 30 cm), sole Hyola PAC 401(flat sowing at 30 cm), sole garden pea (ridge sowing at 60 cm) and sole garden pea (flat sowing at 30 cm). These were evaluated in randomized complete block design with four replications. The various intercropping systems showed no significant effect on primary and secondary branches/plant, siliquae/plant, thousand seed weight and seed yield of cultivars of oilseed rape. GSC 7 cultivar had significantly higher plant height as compared with GSC 6 and Hyola PAC 401 under all the intercropping systems. Intercropping of rape cultivars with garden pea in either 1: 1 or 1: 2 row ratios, produced higher rape equivalent yield, and net returns than sole crop of rape cultivars irrespective of the planting methods. Thus, inclusion of garden pea in oilseed rape intercropping system can be beneficial to get additional monetary advantage without impairing the oilseed rape yield.