Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation

Estimation of optimum fertilizer application is of interest because of production cost, environmental concerns, and performance increase. Optimum fertilizer rates can be determined by fitting statistical models to yield data collected from N fertilizer experi-ments. Quadratic polynomial, square root...

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Autores principales:	S. Rezvani, A. Noruzi, K. Azari, A. M. Jafari
Formato:	article
Lenguaje:	EN FA
Publicado:	Sugar Beet Seed Institute 2013
Materias:	nitrogen fertilizer quadratic polynomial model economic consumption sugar beet Agriculture S Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/00036b8cc01f4925ba9151ba3a296b25
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spelling	oai:doaj.org-article:00036b8cc01f4925ba9151ba3a296b252021-11-23T04:57:09ZDetermination of an appropriate model for optimum use of N fertilizer in furrow irrigation10.22092/JSB.2013.24911735-0670https://doaj.org/article/00036b8cc01f4925ba9151ba3a296b252013-09-01T00:00:00Zhttps://jsb.areeo.ac.ir/article_2491.html?lang=enhttps://doaj.org/toc/1735-0670Estimation of optimum fertilizer application is of interest because of production cost, environmental concerns, and performance increase. Optimum fertilizer rates can be determined by fitting statistical models to yield data collected from N fertilizer experi-ments. Quadratic polynomial, square root, Mitscherlich, hyperbolic trigonometry, quadratic polynomial threshold, and threshold linear models which describe the production function of sugar beet to different rates of N fertilization (0, 60, 120, 180 and 240 kg/ha) were evaluated with supplemental furrow irrigation in three replications in each of two years (2003 to 2004) of experiment. Economic, optimum N rates were estimated based on both fertilizer and crop costs in two years. The fertilizer rate was variable based on fertilizer cost to crop cost and also the applied model. Results showed that the quadratic polynomial model is the most appropriate model for describing the production function and optimal N application in sugar beet production. Using this model, the economic, optimum N rates in 2003 and 2004 were 235.8 and 248.9 kg/ha, respectively.S. RezvaniA. NoruziK. Azari A. M. JafariSugar Beet Seed Institute articlenitrogen fertilizerquadratic polynomial modeleconomic consumptionsugar beetAgricultureSAgriculture (General)S1-972ENFAMajallah-i Chughundar-i Qand, Vol 29, Iss 1, Pp 27-35 (2013)
institution	DOAJ
collection	DOAJ
language	EN FA
topic	nitrogen fertilizer quadratic polynomial model economic consumption sugar beet Agriculture S Agriculture (General) S1-972
spellingShingle	nitrogen fertilizer quadratic polynomial model economic consumption sugar beet Agriculture S Agriculture (General) S1-972 S. Rezvani A. Noruzi K. Azari A. M. Jafari Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
description	Estimation of optimum fertilizer application is of interest because of production cost, environmental concerns, and performance increase. Optimum fertilizer rates can be determined by fitting statistical models to yield data collected from N fertilizer experi-ments. Quadratic polynomial, square root, Mitscherlich, hyperbolic trigonometry, quadratic polynomial threshold, and threshold linear models which describe the production function of sugar beet to different rates of N fertilization (0, 60, 120, 180 and 240 kg/ha) were evaluated with supplemental furrow irrigation in three replications in each of two years (2003 to 2004) of experiment. Economic, optimum N rates were estimated based on both fertilizer and crop costs in two years. The fertilizer rate was variable based on fertilizer cost to crop cost and also the applied model. Results showed that the quadratic polynomial model is the most appropriate model for describing the production function and optimal N application in sugar beet production. Using this model, the economic, optimum N rates in 2003 and 2004 were 235.8 and 248.9 kg/ha, respectively.
format	article
author	S. Rezvani A. Noruzi K. Azari A. M. Jafari
author_facet	S. Rezvani A. Noruzi K. Azari A. M. Jafari
author_sort	S. Rezvani
title	Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
title_short	Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
title_full	Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
title_fullStr	Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
title_full_unstemmed	Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation
title_sort	determination of an appropriate model for optimum use of n fertilizer in furrow irrigation
publisher	Sugar Beet Seed Institute
publishDate	2013
url	https://doaj.org/article/00036b8cc01f4925ba9151ba3a296b25
work_keys_str_mv	AT srezvani determinationofanappropriatemodelforoptimumuseofnfertilizerinfurrowirrigation AT anoruzi determinationofanappropriatemodelforoptimumuseofnfertilizerinfurrowirrigation AT kazari determinationofanappropriatemodelforoptimumuseofnfertilizerinfurrowirrigation AT amjafari determinationofanappropriatemodelforoptimumuseofnfertilizerinfurrowirrigation
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Determination of an appropriate model for optimum use of N fertilizer in furrow irrigation

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