Effect of integrated crop management modules on crop productivity and soil physico–chemical and biological properties under direct-seeded basmati rice (Orzya sativa) - KAJAL DAS; VIJAY POONIYA; ANIL K CHOUDHARY; K SWARNALAKSHMI; R S BANA; C M PARIHAR; S K SARKAR (The Indian Journal of Agricultural Sciences, 2018)