Abstracts on sustainable agriculture 1992 Gate- GTZ
Abstracts on soil fertility
Acknowledgements
1. Soil constraints on sustainable plant production in the tropics.
2. Impact of agricultural practices on soil pollution.
3. The use of organic biostimulants to help low input sustainable agriculture.
4. Nitrogen cycling in high-input versus reduced-input arable farming.
5. Green manure in rice farming.
6. Role of green manure in low-input farming in the humid tropics.
7. Green manuring with vetch on acid soil in the highland region of Rwanda.
8. Tropical lowland rice response to preceding crops, organic manures and nitrogen fertilizer.
9. Pearl millet and cowpea yields in sole and intercrop systems, and their after-effects on soil and crop productivity.
10. Influence of some characteristics of bean seed and seedlings on the tolerance to low phosphorus availability in the soil. (Infuencia de algunas caracteristicas de las semillas y plantulas de frijol Phaseolus vulgaris L. sobre la tolerancia a la baja disponibilidad de fósforo en el suelo )
11. Evaluation of diverse effects of phosphate application on legumes of arid areas.
12. Effect of n and p fertilizers on sustainability of pigeonpea and sorghum systems in sole and intercropping.
13. Efficient fertilizer use in acid upland soils of the humid tropics.
14. Vesicular-arbuscular mycorrhiza management.
15. Impact of tropical va mycorrhizae on growth promotion of cajanus cajan as influenced by p sources and p levels.
16. Benefit and cost analysis and phosphorus efficiency of va mycorrhizal fungi colonizations with sorghum (sorghum bicolor) genotypes grown at varied phosphorus levels.
