AN ECONOMIC-EVALUATION OF A LONG-TERM EXPERIMENT ON PHOSPHORUS AND MANURE AMENDMENTS TO SANDY SAHELIAN SOILS - USING A STOCHASTIC-DOMINANCE MODEL

被引：10

作者：

BAIDUFORSON, J

BATIONO, A

机构：

[1] ICRISAT Sahelian Center, Niamey

[2] IFDC Soil Chemist, ICRISAT Sahelian Center, Niamey

来源：

FERTILIZER RESEARCH | 1992年 / 33卷 / 03期

关键词：

MANURE; NIGER; PHOSPHORUS; SAHELIAN SOILS; STOCHASTIC DOMINANCE FRAMEWORK;

D O I：

10.1007/BF01050874

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Poor fertility status of sandy Sahelian soils represents a major constraint to cereal and legume production. Soil amendment options were evaluated, using a stochastic efficiency framework. Dominance analyses showed that in the presence of annual applications of 30 kg N ha-1 and 30 kg K ha-1, efficient soil amendment options comprise of either the annual application of 8.7 kg P ha-1 in the form of single superphosphates in combination with 5 tonnes manure ha-1 applied every three years or the annual application of 17.5 kg P ha-1 in the form of single superphosphates. Choice between these two efficient options depends on the availability of manure, deficiencies in sandy soils and farmer resource endowments.

引用

页码：193 / 202

页数：10

共 16 条

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