PJB-2024-253
EAR TIP REMOVAL OF NON-TIP COVERING AND DIFFERENT NITROGEN EFFECT ON YIELD AND YIELD COMPONENTS
OF MAIZE
Kiran atta
Abstract
Sowing maize crop which bears ears with poor grains in tip under optimum level of nitrogen supply could probably compensate yield losses. Therefore a field experiment entitled as “Ear tip removal of non-tip covering and different nitrogen effect on yield and yield components of maize” was conducted at Agronomy Research Farm of The University of Agriculture Peshawar during year 2023. The trial was laid out in RCB design with split plot arrangement having four replications. The plot size was 15m2 (3.75m x 4 m), comprised of 5 rows, 75 cm apart with 20 cm plant to plant distance. Maize variety Azam was sown as a test crop. Nitrogen levels (0, 100, 120 and 140 kg ha-1) were assigned to sub plots while ear tip removal (cut and uncut) allotted to main plots. 75 kg ha-1 of phosphorus was applied as basal dose. Outcomes of experiment stated that nitrogen has overall positive effect on maize plant growth except on emergence m-2 and number of plant m-2 .Nitrogen at the rate of 140 kg ha-1 enhanced ear weight (146.50 g), grains ear-1 (405), 1000 grains weight (245.38 g), biological yield (11910 kg ha-1) and grain yield (3620 kg ha-1) of maize. Ear tip removal have significantly increased ear weight (127.81 g), ear weight and grain yield (117.94 kg ha-1). Nitrogen and ear tip removal had a non-significant interaction. It is concluded that nitrogen at 140 kg ha-1 increased yield component i.e number of ear m-2, number of grains ear-1 and 1000 grain weight of maize. Ear tip removal increased the ear weight of maize.
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