Influence of Potassium and Spacing on Yield and Economics of Mustard (Brassica juncea L.)

A field experiment was conducted during Rabi of 2022-23 at the Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology And Sciences, Prayagraj (U.P.) India. To study the Response of potassium and spacing on growth and yield of Mustard. The treatments consist of potassium 30,40,50 kg/ha and spacing 25 x 10 cm, 35 x 10 cm, and 45 x 10 cm. There were 9 treatments each replicated thrice. The soil of experimental plot was sandy loamy in texture, nearly neutral in soil reaction (pH 7.8), low in organic carbon (0.35%) available N (163.42 kg/ha), available P (21.96 kg/ha) and available K (256.48 kg/ha). Results revealed that the significantly higher number of siliqua per plant (276), higher seeds/siliqua (16.54), higher oil content (44.03%), higher seed yield (2.33 t/ha) and higher stover yield (3.53 t/ha) were significantly influenced with application of potassium 50 kg/ha +spacing 45 x 10 cm. Higher gross returns (INR 116616/ha), higher net returns (INR 85013/ha) and higher B:C ratio (2.69) were also recorded in treatment-9 (Potassium 50 kg/ha +Spacing 45 x 10 cm).