SOIL, WATER AND CROP MANAGEMENT ALTERNATIVES IN RAIN-FED AGRICULTURE IN THE SAHEL - AN ECONOMIC-ANALYSIS

被引：8

作者：

DAY, JC

HUGHES, DW

BUTCHER, WR

机构：

[1] Economic Research Service, U.S. Department of Agriculture, Washington, DC

[2] Louisiana State University, Baton Rouge, LA

[3] Washington State University, Pullman, WA

来源：

AGRICULTURAL ECONOMICS | 1992年 / 7卷 / 3-4期

关键词：

D O I：

10.1016/0169-5150(92)90053-2

中图分类号：

F3 [农业经济];

学科分类号：

0202 ; 020205 ; 1203 ;

摘要：

Most agriculture in the Sahel Region is carried out under rainfed conditions where low and uncertain soil moisture levels limit productivity. Improved soil, water and crop management practices are required to reverse the steady decline in per capita food production and sustain output over the long term. Several technological innovations and related farm management practices are evaluated in a case study of a typical farm in Mali. Through use of a soil-water balance model and a whole-farm economic model an optimal mix of these measures is identified. Compared to a base case where no modern inputs are utilized, the combination of animal traction (oxen team), low levels of NPK fertilizer, tied-ridges, traditional long-season food grain crops and early planting was most effective: food grain output was 35% higher than with the traditional base case; soil erosion was reduced by 72%; and even with residual future soil erosion damage capitalized into current income, net farm income was larger by a factor of almost 45.

引用

页码：267 / 287

页数：21

共 23 条

[1]

Biswas, Irrigation in Africa, Land Use Policy, 3, 4, pp. 269-285, (1986)

[2]

Biswas, Land use in Africa, Land Use Policy, 3, 4, pp. 247-258, (1986)

[3]

Doorenbos, Kassam, Yield response to water, FAO Irrigation and Drainage Paper, 33, (1979)

[4]

Doorenbos, Pruitt, Guidelines for predicting crop water requirements, FAO Irrigation and Drainage Paper, 24, (1975)

[5]

FAO, Production Yearbook — 1984, (1985)

[6]

FAO, African Agriculture: The Next 25 Years, (1986)

[7]

FAO, Early agrometeorological crop yield assessment, Plant Production and Protection Paper, 73, (1986)

[8]

Fleming, Agricultural productivity and the use of labor in alternative enterprises in the circle of Kita, Mali, M.S. thesis, (1981)

[9]

Hargreaves, Samani, Rainfed and water requirements manual for Mali, (1986)

[10]

Jayne, Day, Dregne, Technology and agricultural productivity in the Sahel, Agric. Econ. Rep., 612, (1989)

← 1 2 3 →