Quantification of growth, yield and radiation use efficiency of promising cotton cultivars at varying nitrogen levels.
Year: 2010
Type: article
Abstract: Cotton cultivars response to different doses of nitrogen for radiation interception, canopy development, growth and seed yield were studied in 2006. The experiment was laid out in randomized complete block design with split arrangement under the climatic conditions of Bahawalpur. Data on seed yield, total dry matter (TDM), leaf area index (LAI), fraction of intercepted radiation (Fi), accumulated radiation interception during the growth season (Sa) and radiation use efficiency (RUE) were taken into account. TDM pattern showed sigmoid growth curve for both cultivars and nitrogen levels and showed strong relationship (R 2 = 0.98) with the accumulated intercepted radiation (Sa) for the season. Mean maximum value of fraction of incident PAR (Fi) remained 90% at 120 days after sowing (DAS) harvest due to maximum crop canopy development. Cultivar NIAB-111 produced 0.81 g m -2 of TDM for each MJ of accumulated PAR and nitrogen @185 kg ha -1 statistically proved to be better in converting radiation into dry matter production.
Source: Pakistan Journal of Botany
Authors: Aftab Wajid, Ashfaq Ahmad, Tasneem Khaliq, Sardar Alam, Abid Hussain, Khalid Hussain, Wajid Naseem, Muhammad Usman, Shakeel Ahmad
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2220449285