On-farm evaluation of the effects of crop rotation system on bread wheat in Bale highlands, south-eastern Ethiopia

مراجع و منابع این مقاله:

• Chilot, Y., Hayilu, B., Lemma, Z., Tanner, D.G., 992. Farming ...
• Hailu, G., Amsal, T., Endale, A., 1989. Beneficial break crops ...
• Lal, R., 1989. Conservation tillage for sustainable agriculture: Tropics versus ...
• Mooleki, P., Siwale, J., 1998. The impact of crop rotation ...
• Tanner, D.G., Amanuel, G., Kasahun, Z., 1991. Wheat agronomy research ...
• Tanner, D.G., Verkujil, H., Asefa, T., Regassa, E., 1998. An ...
• TCA, 1988. Sustainable agricultural production: Implications for international agricultural research. ...
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