Long-term water productivity of maize (Zea mays L.) from limited Irrigation conditions under moderate semi-arid environment

Crop production has a correlation with the applied water in moderate semi-arid conditions. Due to temperature and rainfall changes enhancing productivity crop are needed for limited resource In this study, maize (Zea mays L.) yields measured fields during 11 years from 2005-2006 2015-2016 were compared those simulated by Agro-ecological Zone method under environment located at north west of Iran soil texture loamy-clay. Different research scenarios involving actual evapotranspirationc (ETa) potential (ETm) value (ETa/ETm= 100%, 90%, 80%, 70%, 60%, 50% 40%) different application efficiencies (Ea) 40%, 50%, 90% 100% considered present study. Research affected yield maize. To produce 10084 kg ha-1 efficiency 100, 90, 80, 70, 60, 50 irrigation requirements respectively 4683, 5203, 5854, 6690, 7805, 9366, 11708 m3 2.15, 1.94, 1.72, 1.51, 1.29, 1.08, 0.86 m-3. Results confirmed that was 1.22 1.52 m-3 an average 1.38 68%. Because ranged 3800 6971 5345 3125 4584 averaged 3836 ha-1. It is suggested could be enhance such environment.