Oilseeds play crucial role in Indian agriculture economy contributing 6% in gross national product and 10% in agricultural produce value (DOAC, 2017). Indian Mustard (Brassica juncea L.) is one of the most important oilseed crop of rabi season of our country and approximately 13.2% of the annual edible oil comes from Brassica.

The field experiment was performed during rabi season of 2019 at the Agricultural Research Farm of Barrister Thakur Chhedilal College of Agriculture and Research Station, Bilaspur (Chhattisgarh). The soil of the experimental field was clay loam in texture, locally known as dorsa. The soil was neutral in reaction, medium in organic carbon, low in available nitrogen, medium in phosphorus and potash and low in sulphur. The experiment was laid out in strip plot design consisting three treatments of irrigation on strip A [irrigation at 80% PE (I₁), 60% PE (I₂) and 40% PE (I₃) through drip] with a control (farmer’s practice) and four nutrient levels on strip B [75% RDF + 30 kg S through drip (F₁), 75% RDF + 20 kg S through drip (F2), 75% RDF + 10 kg S through drip (F₃), 100% RDF through soil application (F₄)] and replicated three times.

Experimental results revealed that among the different irrigation treatments irrigation through drip at 60% PE recorded better growth in terms of plant height (197.06 cm), number of branches (10.28) and plant dry matter (21.36 g plant^-1), yield attributes like number of siliqua plant^-1 (314.01), number of seeds siliqua^-1 (16.13) and yield (grain and straw) (20.10 kg ha^-1 and 48.76 kg ha^-1) of mustard. In terms of economics highest net returns was obtained from treatment I₂ (60% PE) but better B: C ratio was recorded from farmer’s practice. Low water expenses (178.91 mm) and improved water expense efficiency (11.23 kg ha-mm^-1) was recorded for drip irrigation as compared to farmer’s practice. In case of nutrient levels, significantly superior growth attributes, yield attributes, higher yield (20.44 kg ha^-1 and 47.65 kg ha^-1) and net return (90624 Rs) was recorded by treatment F₁ (75% RDF + 30 kg S through drip) followed by F₂ (75% RDF + 20 kg S through drip) however, highest B: C (1.97) ratio was obtained from treatment F₄ (100% RDF through soil application). Lowest yield and economic return was recorded for treatment F₃.