Abstract
The influence of weed control on fertilizer nitrogen use efficiencies (NUEs) by rice genotypes was studied in the Senegal River valley of West Africa with a field experiment during four rice growing seasons. It was hypothesized that integrated management of technologies could improve rice productivity. The objective was to develop integrated high-return technologies that improve irrigated rice-based systems productivity and profitability. Data indicated that rice grain yields were affected by N fertilizer, genotypes and plant densities. In good weed control conditions, optimum doses of recommended N fertilizer varied from 80 to 180 kg N ha–1. Fertilizer N use efficiencies by genotypes were affected by weed control. Profitable management options of genotypes and N fertilizer recommendations have been identified. With a good control of weed, varieties and N fertilizer recommendations were suggested as integrated management options for farmers. But poor control of weed increased N lost, decreased grain yields and profitability. Two genotypes (WAS 55-B-B-2-1-2-5 and WAS 191-1-1-7 FKR) were found to be most competitive against weeds. However, no more than 60 kg N ha–1 should ever be recommended when weeds are poorly controlled. It was concluded that productivity and profitability of irrigated rice-based systems could be improved with integrated management options of genotypes, fertilizers and weed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Dingkuhn M, Sow A (1995) Potential yields of irrigated rice in the Sahel. In: Miézan KM et al (eds) Irrigated rice in the Sahel: prospects for sustainable development. Africa Rice Development Association, Bouaké
Gomez AK, Gomez AA (1983) Statistical procedures for agricultural research. Wiley, New York, NY
Haefele SM, Johnson DE, Diallo S, Wopereis MCS, Powers S, Jamin I (2000) Improved soil fertility and weed management is profitable for irrigated rice farmers in Sahelian West Africa. Field Crops Res 66:101–113
Haefele SM, Wopereis MCS, Wiechmann H (2002) Long-tem fertility experiments for irrigated rice in the West African Sahel: agronomic results. Field Crop Res 78:119–131
Johnson DE, Wopereis MCS, Mbodj D, Diallo S, Powers S, Haefele SM (2004) Timing of weed management and yields losses due to weeds in irrigated rice in the Sahel. Field Crops Res 85:31–42
Kebbeh M, Miezan KM (2003) Ex-ante evaluation of integrated management options for irrigated rice production in the Senegal River valley. Field Crops Res 81:87–94
Raes D, Deckers J (1993) Les sols du delta du fleuve Senegal. Propriétés physiques et chimiques. Bulletin technique No 8, KULeuven-SAED, Saint Louis, Sénégal
Walkley A, Black JA (1934) An examination of the Detjareff method for determining soil organic matter and a proposed modification of the chromatic acid titration method. Soil Sci 37:29–38
West Africa Rice Development Association (WARDA) (2000) Partners in development: Responding to the challenges of food security and poverty eradication in Africa. WARDA, Bouaké
Wopereis MCS, Donovan C, Nebié B, Guindo D, N’Diaye MK (1999) Soil fertility management in irrigated rice systems in the Sahel and Savanah regions of West Africa. Part I. Agronomic analysis. Field Crops Res 61:125–145
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media B.V.
About this paper
Cite this paper
Bado, B., Traore, K., Devries, M., Sow, A., Gaye, S. (2011). Integrated Management of Fertilizers, Weed and Rice Genotypes Can Improve Rice Productivity. In: Bationo, A., Waswa, B., Okeyo, J., Maina, F., Kihara, J. (eds) Innovations as Key to the Green Revolution in Africa. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2543-2_16
Download citation
DOI: https://doi.org/10.1007/978-90-481-2543-2_16
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-2541-8
Online ISBN: 978-90-481-2543-2
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)