Journal of Soil Science and Plant Nutrition, Volume (18), No (1), Year (2018-1) , Pages (13-26)

Title : ( Optimizing application rate of nitrogen, phosphorus and cattle manure in wheat production: An approach to determine optimum scenario using Response -Surface Methodology )

Authors: Mohsen Jahan , mohamad behzad Amiri ,

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Abstract

Optimal application rates of inorganic nitrogen (N) and phosphorus (P) as well as cattle manure were estimated using Response Surface Methodology (RSM). A central composite design (CCD) was conducted at field level during the 2012-13 and 2013-14 growing seasons. The applied levels of N were 0, 150 and 300 kg ha-1 N in form of urea. The used levels for P fertilizer were 0, 100 and 200 kg ha-1 (P2O5) and for cattle manure were 0, 15 and 30 t ha-1, respectively. Seed yield (SY), biological yield (BY were measured. N losses (NL) and agronomical N use efficiency (ANUE) were estimated. Increased N and P rates up to 200 kg ha-1 made in increased SY. Rate optimization of N, P and manure got based on economic, environmental and eco-environmental scenarios. In economic scenario, using 145.4 kg ha-1 N, 200 kg ha-1 P and 18.4 t ha-1 manure resulted in 6500 kg ha-1 SY with ANUE of 10.49. In environmental scenario, by application of 21.21 kg ha-1 N, no application of P and applying 16.3 t ha-1 manure, SY and ANUE of 3160 kg ha-1 and 9.08 were obtained, respectively. In eco-environmental scenario, 144.7 and 34.3 kg ha-1 N and P plus 30 t ha-1 manure resulted in 4031 kg ha-1 SY and a considerable high ANUE of 16.50 succeeding 36.4% higher than economic scenario. The results of this study showed that the eco-environmental scenario had more advantages than the other scenarios mainly due to higher ANUE.

Keywords

, ANUE; Nitrogen losses; Eco, Environmental scenario; Seed yield; central composite design
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@article{paperid:1065451,
author = {Jahan, Mohsen and Amiri, Mohamad Behzad},
title = {Optimizing application rate of nitrogen, phosphorus and cattle manure in wheat production: An approach to determine optimum scenario using Response -Surface Methodology},
journal = {Journal of Soil Science and Plant Nutrition},
year = {2018},
volume = {18},
number = {1},
month = {January},
issn = {0718-9516},
pages = {13--26},
numpages = {13},
keywords = {ANUE; Nitrogen losses; Eco-Environmental scenario; Seed yield; central composite design},
}

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%0 Journal Article
%T Optimizing application rate of nitrogen, phosphorus and cattle manure in wheat production: An approach to determine optimum scenario using Response -Surface Methodology
%A Jahan, Mohsen
%A Amiri, Mohamad Behzad
%J Journal of Soil Science and Plant Nutrition
%@ 0718-9516
%D 2018

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