Response of sulphur and zinc nutrition to the seed yield and oil content of mustard (cv. bari sarisha-14)

The role of different nutrient elements is well established in plant metabolism. However, different crops respond differently in relation to their growth and yield. An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to evaluate the response of sulphur and zinc nutrition to the seed yield and oil content of mustard (cv. BARI Sarisha-14). It, laid out in RCBD with three replications was consisted of four levels of sulphur (0, 20, 40 and 60 kg ha-1) and Zn (0, 1, 2, 3 kg ha-1). It was observed that 60 kg Sulphur ha-1 gave significantly highest seed yield, oil content and harvest index owing to the highest number of branches plant-1, siliqua plant-1, seeds siliqua-1 and 1000-seed weight. Conversely, 0 kg Sulphur ha-1 provided the lowest seed yield and oil content of mustard. Again, the highest number of braches plant-1, siliqua plant-1 and seeds siliqua-1 was found at 3 kg zinc ha-1 which resulted in the highest seed yield, oil content and harvest index. The lowest performance of the yield components and yield was observed at 0 kg zinc ha-1. Interaction effect between 60 kg sulphur ha-1 and 3 kg zinc ha-1 provided the highest seed yield and stover yield because of the highest number of branches plant-1 and seeds siliqua-1 and the worst yield performance was a observed at the control treatment. Therefore, the application of sulphur and zinc at the rate of 60 kg ha-1 and 3 kg ha-1, respectively could be applied for BARI sarisha-14 for higher seed yield.