%0 Journal Article
%T OILCROP-SUN Model Relevance for Evaluation of Nitrogen Management of Sunflower Hybrids in Sargodha, Punjab
%A Ashfaq Ahmad
%A Amjed Ali
%A Tasneem Khaliq
%A Syed Aftab Wajid
%A Zafar Iqbal
%A Muhammad Ibrahim
%A Hafiz Muhammad Rashad Javeed
%A Gerrit Hoogenboom
%J American Journal of Plant Sciences
%P 1731-1735
%@ 2158-2750
%D 2013
%I Scientific Research Publishing
%R 10.4236/ajps.2013.49212
%X <p class=\"MsoNormal\">
	<span lang=\"EN-US\" style=\"font-family:Verdana;\">The
experiments were conducted to evaluate the performance of crop system (DSSAT)
OILCROP-SUN model simu</span><span lang=\"EN-US\" style=\"font-family:Verdana;\">lat</span><span lang=\"EN-US\" style=\"font-family:Verdana;\">ing</span><span lang=\"EN-US\" style=\"font-family:Verdana;\"> growth &amp; development and achene
yield of sunflower hybrids in response to nitrogen under irrigated conditions
in semi arid environment, Sargodha, Punjab. The model was evaluated with
observed data collected in trials which were conducted during spring season in
2010 and 2011</span><span lang=\"EN-US\"> </span><span lang=\"EN-US\"><span style=\"font-family:Verdana;\">in Sargodha, Punjab, Pakistan. </span><st1:place w:st=\"on\"><st1:city w:st=\"on\"><span style=\"font-family:Verdana;\">Split</span></st1:city></st1:place><span style=\"font-family:Verdana;\"> plot design was used in layout of
experiment with three replications. The hybrids (Hysun-33 &amp; S-278) and N
levels (0, 75, 150 and </span><st1:chmetcnv unitname=\"kg\" sourcevalue=\"225\" hasspace=\"True\" negative=\"False\" numbertype=\"1\" tcsc=\"0\" w:st=\"on\"><span style=\"font-family:Verdana;\">225 kg<sup>.</sup></span></st1:chmetcnv><span style=\"font-family:Verdana;\">ha<sup>-</sup></span><sup><span style=\"font-family:Verdana;\">1</span></sup><span style=\"font-family:Verdana;\">)
were allotted in main and sub plots, respectively. The OILCROP-SUN model showed
that the model was able to simulate growth and yield of sunflower with an
average of 10.44 error% between observed and simulated achene yield (AY). The
results of simulation analysis indicated that nitrogen rate of </span><st1:chmetcnv unitname=\"kg\" sourcevalue=\"150\" hasspace=\"True\" negative=\"False\" numbertype=\"1\" tcsc=\"0\" w:st=\"on\"><span style=\"font-family:Verdana;\">150 kg<sup>.</sup></span></st1:chmetcnv><span style=\"font-family:Verdana;\">N<sup>.</sup>ha<sup>-</sup></span><sup><span style=\"font-family:Verdana;\">1</span></sup><span style=\"font-family:Verdana;\"> (N</span><sub><span style=\"font-family:Verdana;\">3</span></sub><span style=\"font-family:Verdana;\">)
produced the highest yield as com</span></span><span lang=\"EN-US\" style=\"font-family:Verdana;\">pared to other treatments.
Furthermore, the economic analysis through mean Gini Dominance also showed the
domi</span><span lang=\"EN-US\" style=\"font-family:Verdana;\">nance of this treatment compared to other treatment combinations. Thus
management strategy consisting</span><span
%K Decision Support System for Agro-Technology Transfer
%K Nitrogen
%K Achene Yield
%K Crop Modeling
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=36403