TY - JOUR AU - S. Islam, F. Ahmad, N. Ahmad, Qamar- uz- Zaman, F. S. Hamid, PY - 2018/10/15 Y2 - 2024/03/29 TI - PRODUCTIVITY IMPROVEMENT OF ONION (ALLIUM CEPA L.) UNDER AGRO- CLIMATIC CONDITIONS OF MANSEHRA, PAKISTAN JF - Journal of Aridland Agriculture JA - jaa VL - 4 IS - 0 SE - Short Communications DO - 10.25081/jaa.2018.v4.3677 UR - https://updatepublishing.com/journal/index.php/jaa/article/view/3677 SP - 33-35 AB - <p>The present study was conducted to investigate the effect of various levels of NPK fertilizers on the yield &nbsp;and yield contributing factors of onion.Treatments includes namely T<sub>1</sub>(00-00-00),T<sub>2</sub>(25-25-12.5),T<sub>3</sub>(50-50-25),T<sub>4</sub>(75-75-37.5)and T<sub>5</sub>(100-100-50) NPK kg/ha. All P and K fertilizer was applied as basal dose while Nitrogen was applied in split doses.&nbsp; The variety used in the study was Swat-1. Data revealed that at harvest maximum plant height of 53.8cm, No. of leaves/plant (7), No. of roots/plant (95), No. of bulb/plot ( 221), fresh weight/bulb (127.7g), bulb size (6.4 cm),&nbsp; and yield of 24.92 tons/ha were recorded in treatment T<sub>5 </sub>provided 100-100-50 NPK kg/ha followed by plant height of 52.2cm, No. of leaves/plant (6), No. of roots/plant (83),&nbsp; No. of bulb/plot(156) , fresh weight/bulb 118g , bulb size 5.7cm,&nbsp; and 23.87 tons/ha yield&nbsp;&nbsp; in treatment receiving 75-57-37.5NPK kg/ha. The minimum plant height of 46.3 cm, No. of leaves/plant (5), No. of roots/plant (55), No. of bulb/plot (114), fresh weight/ bulb (103.5 g) bulb size (5.05cm) and yield of 17.80 tons/ha was recorded in control plot&nbsp; (without NPK). Results indicates that NPK @100-100-50 kg/ha proved to be the optimal dose of fertilizer to get maximum yield of onion.</p> ER -