RH-1975 is a high-yielding Indian mustard (Brassica juncea) variety developed by Chaudhary Charan Singh Haryana Agricultural University (CCSHAU), Hisar.

Key Characteristics

Developer: CCSHAU, Hisar

Average Yield: 11–12 quintals per acre (approx. 27–30 quintals per hectare) 

Max Yield Potential: 14–15 quintals per acre 

Oil Content: ~39.5% to 40% 

Maturity Duration: 142–145 days during the Rabi season 

Plant Height: Tall, around 194 cm with long pods containing 18–20 bold, black, shiny seeds 

Region & Conditions: Best suited for timely-sown, irrigated conditions in Zone-II (Haryana, Punjab, Delhi, Jammu, and Northern Rajasthan) 

Tolerances: Shows good tolerance against frost (palaw) and lower susceptibility to foliar diseases like white rust, Alternaria blight, and Sclerotinia stem rot