EFFECTS OF iRRIGATION AND SULPHUR ON GROWTH, YIELD AND OIL CONTENT OF RAPESEED

Abstract

An experiment was conducted at the agronomy field of Sher-e-Bangla Agricultural University during the period of October 2013 to February 2014 to examine the effect of irrigation and sulphur on the growth, yield and oil content of rapeseed (Brassicci campesiries). There were three different levels of irrigation viz, no irrigation, once at 25 DAS and twice at 25 DAS and 53 DAS and three levels of sulphur viz. 15. 30 and 45 kg S ha". The experiment was laid out in split plot design with three replications assigning irrigation in the main plots and levels of sulphur in the subplot. Irrigation and sulphur significantly influenced the growth, development, yield and yield attributes of rapeseed. Plant height, number of primary branches per plant, secondary branches per plant. number of siliquae per plant, siliquae length, seeds per siliquae, seed yield and oil content was significantly influenced by both irrigation and sulphur. Among the irrigation treatments, two irrigation levels resulted the better growth parameters like plant height and yield components like number of primary branches per plant, secondary branches per plant, number of siliquae per plant, siliquae length. seeds per siliqua and seed yield. Irrigation levels also influenced the oil content. Twice irrigation levels showed the best performance in all respect. The highest seed yield 1505 kg hi' was obtained from twice irrigation levels while control treatment gave the lowest yield. The result revealed that application of 45 kg S hi' showed superior in all respect which is statistically similar to the application of 30 kg S ha" except oil content. The interaction effect of irrigation and sulphur revealed that twice irrigation levels in combination with 45 kg S ha" showed the best performance which was statistically similar to twice irrigations with 30 kg S hi'.