Physiological analysis of growth and yield of indian mustard as affected by irrigation and sulphur

The present study was carried out during rabi seasons of 2003–04 and 2004–05 to find out the effect of irrigation and sulphur on growth and yield characters of Indian mustard. The results revealed that application of two irrigations at 45 DAS and 90 DAS significantly increased plant height, dry matter accumulation, relative growth rate and secondary branches/plant over one irrigation. However, effects of one irrigation and two irrigations were at par on leaf area index, net assimilation rate and primary branches/plant but recorded significantly higher values of above physiological parameters over no irrigation in both the years. Seed yield of mustard increased significantly with increasing levels of irrigation. Application of sulphur also significantly increased the plant height, dry matter accumulation, LAI, RGR, NAR, primary and secondary branches per plant and seed yield of Indian mustard. The significant response was observed up to 45 kg S/ha.