Weather Yield Model for the Semi Tropical Region (Pakistan)

Syed Faizan Haider; K. H. Asif; Amjad Hussain Gilani

doi:10.1007/BF02656947

Impact Factor: 3.9

Volume 9 Issue 3

Jul. 1992

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1992 > 9(3): 367-372

Weather Yield Model for the Semi Tropical Region (Pakistan)

1.
The Department of Agricultural Meteorology, Uni. of Agriculture, Faisalabad Pakistan,The Department of Agricultural Meteorology, Uni. of Agriculture, Faisalabad Pakistan,Degree College Rawala Kot, Azad Kashmir

doi: 10.1007/BF02656947

Abstract
References
Related papers
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Abstract:
Weather models are essential tools for checking of the effect of the weather elements in terms of their effect on the production of the crop. This research is an attempt to see the effect of only two variables i.e., temperature and rainfall for the division Faisalabad (semitropical region of Pakistan).The model fitted is of the linear form:the values of a,b, c have been found. The expected yield has been calculated by using the aridity indices (X1 and X2 ) and the result in the form of coefficient of determination R2 has been found equal to 0.166. The significance of the regression coefficient has been tested, which shows that the contribution to the yield from aridity index at germination and that at ripening is significant.The wheat yields are the results of a wide variety of variables, most of which show varying degree of relationship with one another, some positive and some negative in terms of output. These variables may be technology, fertilizers, pesticides, epidemics, kinds of seeds used, market price of crop and the area under cultivation etc, which can be the source of variation in the wheat yield. Since rainfall during germination and temperature at the ripening periods are the necessary factors for the yield of wheat, for this purpose these parameters have been studied in order to their contribution.
References

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Manuscript History

Manuscript received: 10 July 1992

Manuscript revised: 10 July 1992

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Weather Yield Model for the Semi Tropical Region (Pakistan)

1. The Department of Agricultural Meteorology, Uni. of Agriculture, Faisalabad Pakistan,The Department of Agricultural Meteorology, Uni. of Agriculture, Faisalabad Pakistan,Degree College Rawala Kot, Azad Kashmir

Manuscript received: 1992-07-10
Manuscript revised: 1992-07-10

Abstract: Weather models are essential tools for checking of the effect of the weather elements in terms of their effect on the production of the crop. This research is an attempt to see the effect of only two variables i.e., temperature and rainfall for the division Faisalabad (semitropical region of Pakistan).The model fitted is of the linear form:the values of a,b, c have been found. The expected yield has been calculated by using the aridity indices (X1 and X2 ) and the result in the form of coefficient of determination R2 has been found equal to 0.166. The significance of the regression coefficient has been tested, which shows that the contribution to the yield from aridity index at germination and that at ripening is significant.The wheat yields are the results of a wide variety of variables, most of which show varying degree of relationship with one another, some positive and some negative in terms of output. These variables may be technology, fertilizers, pesticides, epidemics, kinds of seeds used, market price of crop and the area under cultivation etc, which can be the source of variation in the wheat yield. Since rainfall during germination and temperature at the ripening periods are the necessary factors for the yield of wheat, for this purpose these parameters have been studied in order to their contribution.