PJB-2023-257
RESPONSE OF MAIZE VARIETIES TO NITROGEN FOR HERBAGE AND SEED YIELD
Ikram Ullah
Abstract
ABSTRACT
Sufficient and accurate dose of nitrogen is necessary to increase yield and yield components of maize. Field trail was carried out at the University Research Farm (Agronomy) The University of Agriculture Peshawar, Pakistan during kharif season 2022 to investigate the “response of maize varieties to nitrogen for herbage and seed yield”. The trail was designed with randomized complete block (RCB) having three replications. Four varieties of maize (Jalal, Azam, Jumbo, Gulabati) were assigned randomly to the main plots with nitrogen (0, 80, 120, 160 kg ha-1). Nitrogen doses were applied half at sowing and half at the knee stages. The plot size for each block was 3 m x 3.5 m with an area of 10.5 m2, having 5 rows. A distance of 0.7 m was kept between rows and 0.25 m between plants. Statistical analysis exhibited that maximum plant height (223.49 cm), green herbage (18952 kg ha-1) and biological yield (14747 kg ha-1) were observed by the application of 160 kg N ha-1. The maximum ears m-2 was recorded at 120 kg N ha-1 (6.80 m-2) and 160 kg N ha-1 (7.13 m-2). Higher grains ear-1 was obtained with the application of 120 kg N ha-1 (342.58) and 160 kg N ha-1 (351.97). The highest thousand grains weight was indicated at 120 kg N ha-1 (235.75 g) and 160 kg N ha-1 (238.75 g). The highest grain yield was also determined on 120 kg N ha-1 (3768.10 kg ha-1) and 160 kg N ha-1 (3837.70 kg ha-1) whereas harvest index was maximum at 120 kg N ha-1 (27.27 %) and 160 kg N ha-1 (27.17%). Among varieties Azam was predominated and resulted maximum emergence m-2 (8.55), ears m-2 (6.80), number of grains ear-1 (351.97), thousand grains weight (240.83 g), grain yield (3774 kg ha-1) and harvest index (30.76%), while variety Jumbo was performed well by producing highest plant height (279.89 cm), green herbage yield (21173 kg ha-1), node bearing ear (8.55), ear height from the soil (116.56 cm) and biological yield (17882 kg ha-1). On the basis of the above result it was concluded that nitrogen application at the rate of 120 kg N ha-1 could improve grain attributes in maize while 160 kg N ha-1 could improve green herbage production whereas variety Azam could produce higher grain components while variety Jumbo could produce greater herbage yield.
To Cite this article:
Download
