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Experiment was conducted to study the effect of different doses of plant nutrients on growth rate, nutrient uptake and productivity of Maize (Zea mays L.), at Regional Research Station, Karnal during Kharif 2015. Application of recommended NPK with micronutrients (Fe, Zn, Mn) was statically at par with alone NPK application in terms of phonological studies, yield and quality parameters. Maximum grain yield (73400 kg/ha), crop growth rate at 30, 60 and 90 days after sowing (3.41, 12.76 and 16.18 g/m2/day), relative growth rate at 30, 60 and 90 days after sowing (0.120, 0.052 and 0.009 g/m2/day), 50 % tasseling (53.3), 50 % silking (55.3) and days to maturity (96.7) was recorded under NPK + S (160, 60, 60, 40 kg/ha) which was significantly superior over treatments control (no fertilizer), N 150 kg/ha alone and NP (150, 60 kg/ha), where at least single primary macro nutrient lacking. So, finding suggests that use of recommended NPK in combination with sulphur increase phonological factors and productivity of kharif maize.

Key words: Macronutrients, Maize, NPK, Silking, Tasseling.