The experimental trial conducted at research farm (Agronomy) of Pacific College of Agriculture, Udaipur, during the rabi season of 2018–19, a field experiment named "Response of select mustard (Brassica juncea L.) cultivars to varied irrigation schedules based on IW/CPE ratios" was carried out. The experiment was set up using a factorial randomized block design with three replications. The treatment included a mix of six types (PM-26, RH-749, RH-406, Pusa30, Girraj, and Bio 902) and three irrigation schedules (0.40, 0.60, and 0.80 IW/CPE ratio) placed in the main plot, resulting in eighteen treatment combinations. The findings demonstrated that types Bio 902 and Girraj considerably outgrew the other test kinds in terms of plant height. The variety Girraj generated noticeably the most main branches per plant, green leaves per plant, siliquae per plants, and seeds per siliqua. Girraj had a greater mean seed yield than the other types at 25.51 q ha-1. Over the other kinds, the Girraj variant has the highest oil content. In comparison to irrigation at IW/CPE ratios of 0.4 and 0.6, irrigation at IW/CPE ratio 0.8 considerably increased plant height at maturity, the number of green leaves per plant, and the number of branches per plant. Significant increase in the quantity of siliquae and seeds per plant. The highest seed production of 20.33 q ha-1 was recorded with an IW/CPE ratio of 0.8 as opposed to 0.4. Compared to IW/CPE ratios 0.4 and 0.6, irrigation at an IW/CPE ratio of 0.8 produced the oil content that was by far the greatest.

Variety, Irrigation, Treatment, Replication, Combination, Yield and oil Content.

According to the findings of a field experiment titled "Response of various mustard varieties (Brassica juncea L.) under varied irrigation regimens depending on IW/CPE ratio" conducted during the 2018-19 rabi season, It can be concluded that using the mustard variety Girraj and applying irrigation at an IW/CPE ratio of 0.8 appears to be favourable for this agro-climatic zone IV A, since this treatment combination Girraj0.8 IW/CPE ratio produced the maximum seed yield of 26.95 q ha-1.

Shristi Singh, Deepak Kumar, Bhawana and G.L. Sharma (2022). Response of Select Mustard (Brassica juncea L.) Varieties to varying Irrigation Schedules based on IW/CPE Ratio. Biological Forum – An International Journal, 14(3): 1540-1545.