Influence of nitrogen application on phenology, growth and yield of sunflower (Helianthus annuus L.)
Paper Details
Influence of nitrogen application on phenology, growth and yield of sunflower (Helianthus annuus L.)
Abstract
Sunflower is one of the most important oil seed crop. Pakistan is facing a serious shortage of edible oil. Nitrogen plays an important role in improving the growth, yield and quality of all crops. So, an experiment was designed to evaluate the influence of different levels of nitrogen on phenology, growth and yield of Sunflower (Helianthus annuus L.). The study was carried out at Agronomic Research Area, College of Agriculture, Sargodha, during spring season, 2019. The experiment was laid out in Randomized Complete Block Design (RCBD having three replications. The treatments were comprised of different nitrogen levels (0, 55, 110, 165 and 220 kg ha-1). Data regarding leaf area index (LAI), days taken to anthesis, days to maturity, plant height at maturity (cm), head diameter (cm), number of achenes per head, 1000-achenes weight (g), achene yield (kg ha-1), total dry matter (kg ha-1) and harvest index (%) of sunflower were taken by standard procedure. Results indicated that maximum leaf area index (4.68), days taken to anthesis (69.74), days to maturity (121.47), plant height at maturity (183.67 cm), head diameter (25.86 cm), number of achenes per head (2467), 1000-achenes weight (56 g), achene yield (3422 kg ha-1), total dry matter (14046 kg ha-1) and harvest index (24.38%) were recorded at 220 kg N ha-1. So, it is recommended that application of nitrogen at the rate of 220 kg ha-1 is best for maximizing productivity of sunflower under agro-climatic conditions of Sargodha, Pakistan.
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Bailey LD. 1990 Effect of 2-chloro-6 (trichloromethyl)-pyridine (N-serve) and N fertilizer on productivity and quality of Canadian rape culitvars. Candian Journal of plant science 70, 979-986.
Muhammad Mujeeb-ul-Haq, Mudassir Hassan, Amjed Ali, Muhammad Adnan, Muhammad Asif, Muhammad Sikander Hayyat, Bilal Ahmad Khan, Muhammad Mohsin Amin, Ali Raza, Safdar Nazeer, Muhammad Abid Manzoor, Abdul Basit, Rehan Ahmed (2020), Influence of nitrogen application on phenology, growth and yield of sunflower (Helianthus annuus L.); IJB, V17, N2, August, P9-16
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