Determining the Effect of Potassium and Zinc on the Growth and Yield of Mustard (Brassica juncea L.) from Dehradun, Uttarakhand, India

A field experiment was conducted during the Rabi season of 2023-2024 to assess the influence of potassium and zinc on the growth, yield, and quality of mustard (Brassica juncea L.) var. ‘Pant Shweta’ at the Agricultural Research Farm, Graphic Era Hill University, Dehradun, Uttarakhand. The treatments comprised T1 – Control, T2 – NP+30kg K/ha, T3 – NP+ 30kg K/ha + 10 kg Zn/ha, T4 – NP+30kg K/ha+ 15kg Zn/ha, T5 – NP+ 40kg K/ha + 10 kg Zn/ha, T6 – NP+ 40kg K/ha + 15 kg Zn/ha, T7 –NP+ 50kg K/ha + 10 kg Zn/ha and T8- 5NP+ 50kg K/ha + 15 kg Zn/ha. Application of NP+ 50kg K/ha + 15 kg Zn/ha recorded a maximum plant height (60.77cm), (85.63cm) and (138.83cm) and maximum plant dry weight (5.56gm), (19.42gm) and (30.60gm)at 30DAS, 60DAS and 90DAS. Maximum test weight (3.12 g), number of siliqua/plant (201.68), number of seeds/siliqua (28.82), seed yield (26.00q/ha), stover yield (34.13 q/ha), Oil content (40.00%), monetary benefits like gross return (146900.00 Rs./ha), net return (91575.00 Rs./ha) and benefit: cost ratio (1.66).