Submit or Track your Manuscript LOG-IN

Yield Performance of Summer Season Sunflower under N-Rate by Change in Climate of Northwest of Pakistan

Yield Performance of Summer Season Sunflower under N-Rate by Change in Climate of Northwest of Pakistan

Ilham Ulla, G. Arjumand, Nawab Ali and Mohammad Akmal*

The University of Agriculture, Peshawar, Pakistan.

ABSTRACT

Sunflower (Helianthus annuus L.), a non-conventional oil seed crop, can successfully be fit in the cropping system as spring or summer season crop. However, its planting in summer is at risk of the moon-soon outbreak duration in the season. Present study was aimed to quantify delay-sowing response with increasing N-rate on crop productivity at Agronomy Research Farm, University of Agriculture Peshawar Pakistan. Sunflower (cv. Hysun-33) was planted on different dates i.e. Jul. 1, 11 and 21 treated with different N-rates starting from 40 kg ha-1 with a 40 kg increment to the maximum of 160 (kg ha-1) including a control treatment in a randomized complete block (RCB) design in four replications. Sowing date (SD) were main plot and N-rate subplot treatments. Mean results of replications revealed a significant reduction in days to flowering and maturity by delay SD. However, positive responses were observed by increase in N-rate. Early planting showed maximum biomass and yield at 120 kg N ha-1 which was due to reflecting higher leaf area, plant height and stem diameter (cm). Traits e.g. the head diameter, grain head-1 and grains weight were indicators contributing towards grain yield by early sowing compare to late sowing or increasing N-rate (40 to 120 kg ha-1). The oil content and oil yield was naturally contributed well to early sowing date in season. However, a decrease in oil content with increasing N was observed. Oil yield (kg ha-1), the net returns per unit area, is of interest of the crop cultivation and observed the maximum at 120 kg N ha-1. The study suggests that delay sowing of summer sunflower crop in the region either by monsoon rains or any other circumstances decreased production drastically. Moreover, an increase of N from 120 kg ha-1 is not of much value under these circumstances but have the potential to investigate for increasing production of the sunflower crop in the region.  

 

To share on other social networks, click on P-share. What are these?

Sarhad Journal of Agriculture

June

Vol. 35, Iss. 2, Pages 320-662

Featuring

Click here for more

Subscribe Today

Receive free updates on new articles, opportunities and benefits


Subscribe Unsubscribe