SHEORAN P, SINGH S, BAWA SS, et al. Assessing long term impact of nutrient management and rainfall variability on the agroecological resilience of maize (Zea mays)- wheat (Triticum aestivum) system in NW India. Indian J Agri Sci. 2016;86(1):113–9. doi:10.56093/ijas.v86i1.55246