tailieunhanh - Radiation, water, and nitrogen use efficiencies of Gossypium hirsutum L.

Resource use efficiency is a baseline for productive agriculture and proper management of different resources (water, nitrogen, light, and land), and it plays a pivotal role in the accomplishment of this goal. Three field experiments were carried out at the experimental farm area of the Central Cotton Research Institute, Multan, Pakistan, in 2009 and 2010 to investigate the effects of different resources on cotton crops. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2015) 39: 825-837 © TÜBİTAK doi: Research Article Radiation, water, and nitrogen use efficiencies of Gossypium hirsutum L. 1 1 2 1 3 Shakeel AHMAD , Ilyas RAZA , Dilbaugh MUHAMMAD , Hakoomat ALI , Sajjad HUSSAIN , 4, 5 Hülya DOĞAN *, Muhammad ZIA-UL-HAQ 1 Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan 2 Central Cotton Research Institute, Multan, Pakistan 3 Department of Horticulture, Bahauddin Zakariya University, Multan, Pakistan 4 Department of Seed Science, Vocational School, Bozok University, Yozgat, Turkey 5 The Patent Office, Karachi, Pakistan Received: Accepted/Published Online: Printed: Abstract: Resource use efficiency is a baseline for productive agriculture and proper management of different resources (water, nitrogen, light, and land), and it plays a pivotal role in the accomplishment of this goal. Three field experiments were carried out at the experimental farm area of the Central Cotton Research Institute, Multan, Pakistan, in 2009 and 2010 to investigate the effects of different resources on cotton crops. Treatments for the first experiment included 4 cultivars and 6 nitrogen levels. The second experiment comprised 3 variables, irrigation methods, cultivars, and plant spacing, whereas 2 variables, including different irrigation regimes and glycinebetaine application, were used in the third experiment. Different attributes, such as physiological efficiency, irrigation water use efficiency, and agronomic and economic nitrogen use efficiency, were studied during the course of experimentation. The statistical results revealed that cumulative intercepted photosynthetically active radiation, radiation use efficiencies, water use efficiencies for total biomass, seed cotton, lint, and cottonseed yield were enhanced with the addition of each incremental dose of .