Agro-economic and energetic evaluation of the substitution capacity of different tillage methods at different levels of nitrogen fertilization in maize and bean [Phaseolus vulgaris] systems
Maldonado Andrade, M.A.
Agro-economic and energetic evaluation of the substitution capacity of different tillage methods at different levels of nitrogen fertilization in maize and bean [Phaseolus vulgaris] systems Evalaucion agroeconomica y energetica de la capacidad de sustitucion de diferentes metodos de laboreo a distintos niveles de fertilizacion nitrogenada en sistemas de maiz [Zea mays] y frijol [Phaseolus vulgaris] - 1980 - Printed
Tesis (Mag Sc). Numerical data; 58 ref. Summaries (En, Es); Also on microfiche IICA, Turrialba (Costa Rica)
Spanish
Beans phaseolus vulgaris
Fertilizers
Maize Zea mays
Soil cultivation and cropping systems
Soil fertility
Nitrogen fertilizers
84-079565
Agro-economic and energetic evaluation of the substitution capacity of different tillage methods at different levels of nitrogen fertilization in maize and bean [Phaseolus vulgaris] systems Evalaucion agroeconomica y energetica de la capacidad de sustitucion de diferentes metodos de laboreo a distintos niveles de fertilizacion nitrogenada en sistemas de maiz [Zea mays] y frijol [Phaseolus vulgaris] - 1980 - Printed
Tesis (Mag Sc). Numerical data; 58 ref. Summaries (En, Es); Also on microfiche IICA, Turrialba (Costa Rica)
Spanish
Beans phaseolus vulgaris
Fertilizers
Maize Zea mays
Soil cultivation and cropping systems
Soil fertility
Nitrogen fertilizers
84-079565