Potential Agroforestry Systems for Semiarid Regions

Abstract

The objective of this work was to evaluate the potential of agroforestry systems in the semiarid, and to evaluate the productivity of eucalyptus in three planting spacing, in single cultivation in agroforestry systems. The comparison of the systems was in a randomized block design with four systems (monoculture; peanut systems; castor bean; cassava) and three eucalyptus spacing (10 m x 2 m, 10 m x 3 m and 10 m x 4 m). Monocultures and other characteristics were compared by randomized block design. Peanut productivity was evaluated at three and a half months, castor productivity at five and eight months and cassava productivity at 21 months. Eucalyptus productivity was measured at 13 and 21 months of age. The results showed that the wood production was greater in the 10 m x 2 m spacing and in the system with castor and single cultivation. The castor yield was higher in the system, in the 10 m x 3 m spacing, while the cassava productivity was higher in monoculture. The area equivalence index of the systems was higher than that of monocultures. Therefore, eucalyptus agroforestry systems intercropped with castor and cassava are suitable for the semiarid region. The 10 m x 2 m spacing provided a larger volume of wood (m³ ha-1). Castor yield was higher in the 10 m x 3 m spacing. For cassava, the highest yield was obtained in monoculture and in the system with 10 m x 3 m or 10 m x 4 m spacing.

O manejo do ambiente luminoso em sistemas agroflorestais de usos múltiplos

“…Juntamente com essa rápida disseminação, os eucaliptos foram também considerados ameaças à biodiversidade de plantas e animais por reduzirem o crescimento de plantas no sub-bosque e comunidades adjacentes, em função da secreção de compostos alelos químicos e diminuir a presença de animais por sua estrutura e perda de habitat (BARGALI e BARGALI, 2000;BARLOW et al, 2007;BASANTA et al, 1989;BUGHIO et al, 2013;HOBBS et al, 2003;MARTELLO et al, 2018;PROENÇA et al, 2010). Assim, uma série de culturas têm sido testadas sob diversos espaçamentos e arranjos em sistemas agroflorestais com eucalipto, e como esperado os resultados variam amplamente (BORGES et al, 2017(BORGES et al, , 2021CECCON, 2005;JUNIOR et al, 2018;MACEDO et al, 2006;NARDINI et al, 2019;NIERI et al, 2021;PRASAD et al, 2010) As médias de intensidade luminosa mensal para cada um dos tratamentos foram feitas considerando apenas as medições realizadas entre os horários de nascer e pôr do sol.…”