Is the Quesungual System an option for smallholders in dry hillside agroecosystems? - Castro, A.; Rivera, M.; Ferreira, Oscar; Pavon, Jellin; García, E.; Amézquita Collazos, Edgar; Ayarza, Miguel Angel; Barrios, E.; Rondón, Marco Antonio; Pauli, N.; Baltodano, Maria Eugenia; Mendoza, B.; et al. (CGIAR Challenge Program on Water and Food, 2008)