Table 2: Impact of nitrogen fertilizer rates (control–0, 50, 100, 150, and 200 kg ha−1) on maize vegetative and yield parameters (Mean ± SD).

Nitrogen fertilizer rates [kg ha−1]Number of leaves per plantPlant height [cm]Stem girth Leaf area indexNumber of cobs per plantLength of cobs [cm]Circumference of cobs [cm]Number of grains per cob

Control–018.9±0.5a246±6a9.3±0.3a905±121a1.0±0.0a14.5±1.2b14.8±0.5a372±34a
5018.8±0.4a243±25a9.3±0.2a998±47a1.1±0.1a16.6±0.9ab15.1±0.6a422±19a
10019.1±0.5a248±23a9.2±0.4a1211±486a1.0±0.1a16.2±0.9ab15.2±1.2a437±37a
15019.2±0.3a240±35a9.2±0.4a909±59a1.0±0.1a18.0±1.2a15.0±0.7a449±41a
20019.1±0.3a259±16a9.8±0.5a1000±86a1.1±0.2a17.3±1.0a15.2±0.9a456±70a

Values within columns with different letters are significantly different (P < 0.05).