Contemporary nitrogen management in maize (Zea mays)–Indian mustard (Brassica juncea) cropping system for maximizing yield, water productivity and profitability

A field experiment was conducted during 2018–19 and 2019–20 at the research farm of ICAR-Directorate Rapeseed-Mustard Research, Bharatpur, Rajasthan to evaluate effect organic inorganic nitrogen sources on yield, water productivity, system productivity economics maize (Zea mays L.)-mustard [Brassica juncea (L.) Czern.] cropping system. The in split-plot design with recommended levels fertilizers (RDF)/FYM/biofertilizer/mustard straw/Jivamrat main-plots doses (RDN) 100, 125 150% sub-plots Indian mustard replicated thrice. Application RDF + FYM @2.5 t/ha Azotobacter straw recorded highest SCMR (41.2), leaf area index (4.42), number siliqua/ plant (440.7), seeds/siliqua (18.4), test weight (5.83 g) seed yield (3.36 t/ha) mustard. RDN physiological attributes (3.22 Results also showed grain (3.73 RDF+FYM t/ ha+Azotobacter+mustard t/ha. System (4.84 (2.14 kg seed/m3) were found higher +Azotobacter+mustard 150%. net monetary return 51715, 81040 132755 `/ha B:C ratio 3.09, 3.22 3.15 for maize, t/ha+Azotobacter+mustard 150%, respectively. Thus, integrated use @150% improved maize–mustard profitability under semi-arid climates.