eprintid: 7219 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/72/19 datestamp: 2023-11-09 16:19:01 lastmod: 2023-11-09 16:19:01 status_changed: 2023-11-09 16:08:47 type: article metadata_visibility: show creators_name: Nasim, W. creators_name: Belhouchette, H. creators_name: Tariq, M. creators_name: Fahad, S. creators_name: Hammad, H.M. creators_name: Mubeen, M. creators_name: Munis, M.F.H. creators_name: Chaudhary, H.J. creators_name: Khan, I. creators_name: Mahmood, F. creators_name: Abbas, T. creators_name: Rasul, F. creators_name: Nadeem, M. creators_name: Bajwa, A.A. creators_name: Ullah, N. creators_name: Alghabari, F. creators_name: Saud, S. creators_name: Mubarak, H. creators_name: Ahmad, R. title: Correlation studies on nitrogen for sunflower crop across the agroclimatic variability ispublished: pub keywords: correlation; crop production; crop yield; dicotyledon; dry matter; fertilizer application; growth rate; humid environment; hybrid; leaf area index; nitrogen; nutrient use efficiency; optimization; seasonal variation, Helianthus; Helianthus annuus, fertilizer; nitrogen, biomass; climate change; crop; growth, development and aging; plant leaf; sunflower, Biomass; Climate Change; Crops, Agricultural; Fertilizers; Helianthus; Nitrogen; Plant Leaves note: cited By 40 abstract: Nitrogen (N) fertilizer is an important yield limiting factor for sunflower production. The correlation between yield components and growth parameters of three sunflower hybrids (Hysun-33, Hysun-38, Pioneer-64A93) were studied with five N rates (0, 60, 120, 180, 240 kg ha�1) at three different experimental sites during the two consecutive growing seasons 2008 and 2009. The results revealed that total dry matter (TDM) production and grain yield were positively and linearly associated with leaf area index (LAI), leaf area duration (LAD), and crop growth rate (CGR) at all three sites of the experiments. The significant association of yield with growth components indicated that the humid climate was most suitable for sunflower production. Furthermore, the association of these components can be successfully used to predict the grain yield under diverse climatic conditions. The application of N at increased rate of 180 kg ha�1 resulted in maximum yield as compared to standard rate (120 kg ha�1) at all the experimental sites. In this way, N application rate was significantly correlated with growth and development of sunflower under a variety of climatic conditions. Keeping in view such relationship, the N dose can be optimized for sunflower crop in a particular region to maximize the productivity. Multilocation trails help to predict the input rates precisely while taking climatic variations into account also. In the long run, results of this study provides basis for sustainable sunflower production under changing climate. © 2015, Springer-Verlag Berlin Heidelberg. date: 2016 publisher: Springer Verlag official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955567558&doi=10.1007%2fs11356-015-5613-1&partnerID=40&md5=d3a3ebb5d46769a128a094a8046009c6 id_number: 10.1007/s11356-015-5613-1 full_text_status: none publication: Environmental Science and Pollution Research volume: 23 number: 4 pagerange: 3658-3670 refereed: TRUE issn: 09441344 citation: Nasim, W. and Belhouchette, H. and Tariq, M. and Fahad, S. and Hammad, H.M. and Mubeen, M. and Munis, M.F.H. and Chaudhary, H.J. and Khan, I. and Mahmood, F. and Abbas, T. and Rasul, F. and Nadeem, M. and Bajwa, A.A. and Ullah, N. and Alghabari, F. and Saud, S. and Mubarak, H. and Ahmad, R. (2016) Correlation studies on nitrogen for sunflower crop across the agroclimatic variability. Environmental Science and Pollution Research, 23 (4). pp. 3658-3670. ISSN 09441344