Browsing by Author Beer, John W.
Showing results 1 to 3 of 3
| Preview | Issue Date | Title | Author(s) |
|---|---|---|---|
| 1990 | Modelling agroforestry systems of cacao (Theobroma cacao) with laurel (Cordia alliodora) or poro (Erythrina poeppigiana) in Costa Rica - V. Productivity indicies, organic materialmodels and sustainbility over ten years | Beer, John W.; Bonnemann, A.; Chávez, Wilfredo; Fassbender, H. W.; Imbach, A. C.; Martel, I. | |
| 2003 | Root interactions between young Eucalyptus deglupta trees and competitive grass species in contour strips | Schaller, Michaela; Schroth, G?otz; Beer, John W.; Jiménez, Francisco | |
| 2003 | Species and site characteristics that permit the association of fast-growing trees with crops: The case of Eucalyptus deglupta as coffee shade in Costa Rica | Schaller, Michaela; Schroth, G?otz; Beer, John W.; Jiménez, Francisco |