Economic feasibility of variable-rate technology for nitrogen on corn

被引：42
|
作者：
Thrikawala, S [1 ]
Weersink, A
Kachanoski, G
Fox, G
机构：
[1] Univ Guelph, Dept Agr Econ & Business, Guelph, ON N1G 2W1, Canada
[2] Univ Saskatchewan, Dept Soil Sci, Saskatoon, SK S7N 0W0, Canada
来源：
AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS | 1999年 / 81卷 / 04期
关键词：
fertility distributions; net returns; precision farming; variable rate;
D O I：
10.2307/1244334
中图分类号：
F3 [农业经济];
学科分类号：
0202 ; 020205 ; 1203 ;
摘要：
The economic feasibility of three different fertilizer management strategies (constant rate, three-rate and multiple-rate technology) in the application of nitrogen fertilizer to corn are compared under different probability distributions for field fertility. A constant rate was more profitable than either variable-rate technology system for homogeneous fields with low fertility. The application area at which the relative profitability between systems changed was largely determined by the characteristics of the fertility distribution rather than by assumptions regarding costs. Variable-rate technology improves groundwater quality in low-fertility fields by reducing total fertilizer applied and in high-fertility fields by increasing corn yield.
引用
收藏
页码：914 / 927
页数：14
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