Abstract

A field experiment was conducted at Research Farm of the Punjab Agricultural University Regional Station, Bathinda on sandy loam soil to study the effect of various doses of sulphur and quality of irrigation water on Indian mustard and its residual effect on succeeding moong bean crop. The experiment was laid out in split-split plot design with three sulphur levels viz., recommended dose i. e. 20 kg/ha (S1), 150% of recommended dose (S2), 200% of recommended dose (S3) in main plots, three irrigation water treatments i. e. canal water (CW), tubewell water of poor quality (TW), CW (psi) and then with TW in sub-plots and two varieties of Indian mustard (PBR-91 and PBR-210) in sub-sub plots with three replications. The tube well water used for irrigation had RSC value of 6.4 meq/1 and EC value of 2200 µ mhos/cm. The results revealed that pre-sowing irrigation with canal water and subsequent irrigation with tubewell gave 0.6% higher grain yield than irrigation with only tubewell water and it was statistically at par with canal water. The reduction of 3.5% in grain yield was recorded under CW (psi) than only CW. The variety PBR-91 outyielded PBR-210 numerically under all the qualities of water. However, significantly same yield was recorded with sulphur levels under all quality of irrigation waters. Siliqua number per plant was significantly higher under recommended dose of sulphur (S1) than other treatments of sulphur. The water expense efficiency was maximum under CW, 40 kg S/ha and under variety PBR-91. The grain yield of moong bean was statistically similar at 20 and 40 kg S/ha. However, both were significantly better than 30 kg S/ha. The PWU and WEE were maximum under S3 (40 kg S/ha) level of sulphur, whereas the water expense (WE) was lowest under S3 level. Raya variety PBR-91 illustrated higher PWU and WEE. But, WE was lower than PBR-210. The pre-sowing irrigations with good quality water followed by all other irrigations with poor quality water (tubewell water) were at par with irrigations only with canal water in terms of moong yield. Tubewell water recorded highest water use and expense but lowest WEE. Consequently, the WEE was higher in CWps+TW than only TW.