PJB-2011-240
MAIZE RESPONSE TO TIME AND RATE OF NITROGEN APPLICATION
HAFIZ MOHKUM HAMMAD1*, ASHFAQ AHMAD1, AFTAB WAJID1 AND JAVAID AKHTER2
Abstract
To find out effective use of nitrogen (N) in autumn planted maize (Zea mays L.) hybrid, a field experiment was conducted during 2009 at Agronomic Research Area, University of Agriculture, Faisalabad. Three N split application timings depending upon various development stages were kept in main plots and five rates of N; N1 (100 kg ha-1), N2 (150 kg ha-1), N3 (200 kg ha-1), N4 (250 kg ha-1) and N5 (300 kg ha-1) were randomized in sub plots. Results revealed that maximum plant growth, number of kernels per cob (419) and grain yield (8.27 t ha-1) were recorded in N4 treatment. Contrary maximum days to maturity (103.3 days) and biological yield (16.56 t ha-1) were recorded in N5 treatment. Based on the results, it was concluded that application of N in three split (at V2, V16 and R1 stage) @ 250 kg ha-1 can be recommended for achieving optimum grain yield under semi arid environment of Pakistan.
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