Browsing by Author "Kolawole, G. O."
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- Long-term effects of fallow systems and lengths on crop production and soil fertility maintenance in West AfricaTian, G.; Kang, B. T.; Kolawole, G. O.; Idinoba, P.; Salako, F. K. (2005)This article analyzes the results of a twelve year farm trial in West Africa examining the transition from shifting cultivation using a natural vegetation fallow, a leguminous cover crop fallow, and an woody alley crop fallow. The research determines that the cover crop and the alley crop fallows offer superior performance after one year. The cover crop is effective in increasing maize yield while the alley crop makes a more substantive contribution to soil organic carbon. If allowing a two year fallow, the natural vegetation also restores productivity and soil carbon. Thus, the paper provides evidence for farmers to pursue a cover cropping or alley cropping as an a more immediately productive return for a fallowed system in West Africa.
- Nitrogen fertilizer replacement indexes of legume cover crops in the derived savanna of West AfricaTian, G.; Kolawole, G. O.; Kang, B. T.; Kirchhof, G. (Netherlands: Kluwer Academic Publishers, 2000)Using a three year trial in Nigeria, this article examines the effectiveness of leguminous cover crops on maize yield in West Africa. Testing multiple types of cover crops, the study universally demonstrates the cover crops conserve nitrogen and result in improvements for maize yield in both drier and wetter years. While the cover crop was more effective in improving nitrogen in wetter conditions, yields still improved during the drier year with the cover crop.