Evaluation of the utilization of heated sewage sludge for peri-urban horticulture production in the Sahel of West Africa

Hayashi, K and Abdoulaye, T and Wakatsuki, T (2010) Evaluation of the utilization of heated sewage sludge for peri-urban horticulture production in the Sahel of West Africa. Agricultural Systems, 103 (1). pp. 36-40. ISSN 0308-521X

PDF Restricted to ICRISAT users only Download (234kB) | Request a copy

Abstract

Shortage of organic matter hinders agricultural production in the Sahel, and this lack of enough organic matter is more severe for peri-urban horticulture, which depends heavily on it. Alternative sources of organic matter that offer new options for peri-urban horticulture can help reduce the potential for conflict over finite resources between traditional crop production and peri-urban horticulture. Both agronomic and economic evaluations of an organic amendment called heated sewage sludge (HSS) were conducted in the research station of International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)-Niamey, Niger, West Africa. For this study, HSS, a material imported from Japan, applied at a dosage application equivalent to 20.0 kg 100 m-2 on lettuce fields led to production levels as high as those of conventional methods, and the yield became even higher than those of conventional methods when the dosage was increased to 50.0 kg 100 m-2 and 100.0 kg 100 m-2. Even though HSS was imported, its benefits outweighed its cost, as evidenced by the positive net returns. Since profitability in peri-urban horticulture is much higher than that of traditional crop production, the results of this study imply that if adopted, the use of HSS can lead to increased availability of organic matter for traditional cropping

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Peri-urban horticulture; Heated sewage sledge (HSS); Net returns; Millet-based cropping system; Sahel
Subjects:	Others
Depositing User:	Ms K Syamalamba
Date Deposited:	10 Dec 2012 06:01
Last Modified:	07 Feb 2014 05:17
URI:	http://oar.icrisat.org/id/eprint/6288
Official URL:	http://dx.doi.org/10.1016/j.agsy.2009.08.004
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

View Statistics

Actions (login required)

View Item