Efecto de frijol tapado con barbecho corto sobre la biomasa y las reservas de fósforo del suelo en Costa Rica.

D M Derry,R J Buresh,P A Sanchez, Frank G Calhoun, Eds,Ana Luisa Velasco, M A Ibrahim,F Jimenez,G Rivas,J A Velasco Trejo,D L Kass,F Gonzalez De Leon,Lidia Giuffre,O S Heredia,N Arrigo,Marta E Conti,J Storti,G Cabalceta,Bellows B C Thurston H D,M S Smith,G S Abawi,D Kearl,C A Black, H Martinez,H P Haag, Maria Soledad Hernandez,Maria Luz Cardenas, A R Mesa, Raul E Acosta, R Chongo,Viktor L Afanasiev, O Arteaga,Francisco Antonio Monteiro, James Cunha Werner,Vanildo Favoretto, Maria Jesus Santamaria,K F Lowe, R C Bruce,T M Bowdler, J F Sanchez O,J G Salinas, D Alejo M, H Restrepo P,P De T Alvim,P Cabala Rosand

mag（2000）

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chemical composition,calcium,rock phosphate,investment,fallow,saline soils,aeration,agroforestry,salinity,organic matter,soil management,environmental impact,nutritional requirements,cover crops,green revolution,crop yield,acid base equilibrium,calcio,canopy,ph,sol,land use,productivity,phosphorus,zero tillage,extraction,soil fertility,biomass,erosion

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