YIELD OF CASSAVA AND PEANUT IN SOME AGROFORESTRY SYSTEMS

Abstract

Yields of cassava (Manihot esculenta) and peanut in some agroforestry systems were studied at soil and water losses on plots with different land use, Integrated Development of the Phu Wiang Watershed Project, Phu Wiang, Khon Kaen in 1987-1990. The study was carried out by using Randomized Complete Block Design with three replications, they are cassava and peanut planted under: (1) Leucaena leucocephala (4 x 4 m.), (2) L. leucocephala (2 x 8 m.), (3) Eucalyptus camaldulensis (4 x 4 m.), (4) E. camaldulensis (2 x 8 m.) and (5) bare land (without trees) as control, Data analysis showed that the yields of cassava and peanut under bare land were higher than the others, and showed significant difference among these yields. After three to four years, the yield of cassava under L. leucocephala was higher than E. camaldulensis, and showed singificant difference, but the yields of peanut under L. leucocephala and E. camaldulensis were slightly difference. If was also found that the yields of cassava and peanut planted under spacing 4 x 4 meters and 2 x 8 meters of L. leucocephala or E. camaldulensis did not showed significant difference.