Effect of Different Levels of Nitrogen and Phosphorus on the Yield, Yield Components and Quality of Sunflower (Helianthus Annuus L) under Agro-Climatic Conditions of Goner Farm Diamer GB.

Abstract

Effect of different levels of Nitrogen and Phosphorus on the yield, yield components and quality of sunflower NK. Armony was studied at the field crop Research section Goner Farm Diamer during spring 2023. The experiment was laid out in Randamized complete block design with 3 replications with a net plot size of 5m x 3m (15sqm). It was observed during this study that plant height head diameter (cm) number of seeds (head^-1), 100 seed weight (g) seed yield (tha^-1) stalk yield (tha^-1) harvest index and seed oil contents were significantly affected by  N and P₂O₅ levels. While number of leaves plan^-1 was not affected significantly. Maximum plant height (cm) head diameter (cm) number of seeds head^-1, seed yield (tha^-1) stalk yield (tha^-1), harvest index and seed oil contents were recorded in plants fertilized at the rate of 130kg N and 130kg P₂O₅ ha^-1, while the maximum 100 seed weight was recorded at the rate of 80kg N and 80kg P₂O₅ ha^-1.