Scheme for agroforestry development in Unit I of the Ticoporo forest reserve, Barinas estate.
The Unit covers 45 750 ha in Venezuela, more than half of which has been affected by deforestation, illegal logging and uncontrolled livestock grazing. Details are given of a 4-year scheme for agroforestry development in the Unit which will result in improved land use and the possibility of restoring land to forestry production. Three alternatives are to be evaluated: (1) rows of timber trees with 4-row intercrops of short (2 yr) cycle crops (Zea mays, Phaseolus vulgaris, Manihot esculenta, Vigna sinensis [V. unguiculata], Dioscorea alata); (2) 5-row blocks of timber trees with 10-row intercrops of short cycle crops; and (3) 5-row blocks of timber trees with 4-row intercrops of perennial or 'semiperennial' species (M. paradisiaca, Carica papaya, Theobroma cacao, Annona muricata). In all 3 alternatives, the timber trees (Swietenia macrophylla, Cedrela angustifolia, Cordia alliodora, Bombacopsis quinata, Tectona grandis, Gmelina arborea and Eucalyptus deglupta) are to be established at 3-m spacing within and between rows.