Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey
This study aims to investigate the effects of nitrogen fertilizer application on tomato yield by using econometric models. The data obtained by questionnaire from 53 farmers who produce tomatoes in Tokat province constitute the main material of the study. The Simple Random Sampling Method was used t...
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| Format: | Article |
| Language: | English |
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Hasan Eleroğlu
2017-04-01
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| Series: | Turkish Journal of Agriculture: Food Science and Technology |
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| Online Access: | http://www.agrifoodscience.com/index.php/TURJAF/article/view/1180 |
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| author | Bilge Gözener Oğuz Parlakay |
| author_facet | Bilge Gözener Oğuz Parlakay |
| author_sort | Bilge Gözener |
| collection | DOAJ |
| description | This study aims to investigate the effects of nitrogen fertilizer application on tomato yield by using econometric models. The data obtained by questionnaire from 53 farmers who produce tomatoes in Tokat province constitute the main material of the study. The Simple Random Sampling Method was used to determine the sample size with a 90% confidence interval and 10% margin of error. Nine models were tried to determine the best model to explain the effect of nitrogenous fertilizer usage in tomato cultivation. The data in the models were used to calculate the growers’ optimal fertilizer amount of use (physical optimum and economical optimum values were calculated) and the results were compared to the ones suggested by the experts. As a result, through the statistical studies, quadratic model was found to be the most suitable one. It has been determined that tomato farmers use less (10.54 kg da-1) or excess (23.48 kg da-1) N fertilizer than the level at which economic optimum is achieved. |
| format | Article |
| id | doaj-art-07df570f8bb94eddb9f33524127ddce9 |
| institution | Kabale University |
| issn | 2148-127X |
| language | English |
| publishDate | 2017-04-01 |
| publisher | Hasan Eleroğlu |
| record_format | Article |
| series | Turkish Journal of Agriculture: Food Science and Technology |
| spelling | doaj-art-07df570f8bb94eddb9f33524127ddce92025-08-20T03:55:28ZengHasan EleroğluTurkish Journal of Agriculture: Food Science and Technology2148-127X2017-04-015444144410.24925/turjaf.v5i4.441-444.1180519Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, TurkeyBilge Gözener0Oğuz Parlakay1Department of Agricultural Economics, Faculty of Agriculture, Gaziosmanpaşa University, 60240 TokatDepartment of Agricultural Economics, Faculty of Agriculture, Mustafa Kemal University, 31060 HatayThis study aims to investigate the effects of nitrogen fertilizer application on tomato yield by using econometric models. The data obtained by questionnaire from 53 farmers who produce tomatoes in Tokat province constitute the main material of the study. The Simple Random Sampling Method was used to determine the sample size with a 90% confidence interval and 10% margin of error. Nine models were tried to determine the best model to explain the effect of nitrogenous fertilizer usage in tomato cultivation. The data in the models were used to calculate the growers’ optimal fertilizer amount of use (physical optimum and economical optimum values were calculated) and the results were compared to the ones suggested by the experts. As a result, through the statistical studies, quadratic model was found to be the most suitable one. It has been determined that tomato farmers use less (10.54 kg da-1) or excess (23.48 kg da-1) N fertilizer than the level at which economic optimum is achieved.http://www.agrifoodscience.com/index.php/TURJAF/article/view/1180Econometric modelsEconomic optimumProduction functionsQuantitative relationshipTechnical optimum |
| spellingShingle | Bilge Gözener Oğuz Parlakay Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey Turkish Journal of Agriculture: Food Science and Technology Econometric models Economic optimum Production functions Quantitative relationship Technical optimum |
| title | Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey |
| title_full | Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey |
| title_fullStr | Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey |
| title_full_unstemmed | Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey |
| title_short | Econometric Analysis of Effects of Nitrogenous Fertilizer Usage on Tomato Yield in Tokat, Turkey |
| title_sort | econometric analysis of effects of nitrogenous fertilizer usage on tomato yield in tokat turkey |
| topic | Econometric models Economic optimum Production functions Quantitative relationship Technical optimum |
| url | http://www.agrifoodscience.com/index.php/TURJAF/article/view/1180 |
| work_keys_str_mv | AT bilgegozener econometricanalysisofeffectsofnitrogenousfertilizerusageontomatoyieldintokatturkey AT oguzparlakay econometricanalysisofeffectsofnitrogenousfertilizerusageontomatoyieldintokatturkey |