Effect of Irrigation Frequencies and Levels of Nitrogen on the Growth, Yield Attributes and Economics of Mustard Under Saline-sodic Condition

Abstract

A field experiment at the University Research Farm, Dalipnagar, Kanpur was conducted to find out an optimum irrigation schedule and dose of nitrogen for mustard 'Varuna' on newly reclaimed saline- sodic soil. Increasing levels of irrigation and nitrogen significantly in- creased the yield attributes, viz. plant height, number of siliqua per plant, number of grains per siliqua, test weight and ultimately the yield of mustard. The oil content in mustard was also increased with increasing levels of irrigation but the protein content was decreased. As regards nitrogen application, it showed an adverse effect on oil content but increased the protein content. From an over all consideration of yield and quality 5 irrigations administered on 20, 30, 50, 75 and 100 days of crop age and a dose of 120 kg N/ha were ascertained to be optimum for mustard 'Varuna' on newly reclaimed saline-sodic soils. Maximum net return (Rs.2149.05/ha) was also recorded from this combination i.e. 5 irrigations and 120 kg N/ha.