Abstract
Combinations of species, cultivars, clones and structural arrangements are cited as possibilities that may determine the interactions between these system components and management, needing to be better understood, especially in relation to shading capacity. In this sense, the present study aims to evaluate the light interception of Eucalyptus spp. clones at different structural arrangements for integrated production systems. An experiment was installed in randomized blocks design with five replications, in factorial scheme 4 x 2. Four structural arrangements A1 = Triple row (3,5 x 3,5 x 3,5) + 88 m; A2 = Double row (3,5 x 3,5) + 44 m; A3 = Single row 4 x 22 m; and A4 = Single row 4 x 11 m and two hybrids clones of Eucalyptus urophylla x E. grandis. For the estimation of the luminosity characteristics, the CI-110 imager equipment was used for estimate: the leaf area index, the average leaf angle, the coefficient of transmission, the sunflecks and the photosynthetically active radiation. Data were analyzed by variance analysis and the averages of the values of characteristics were compared by the Tukey test at 5% probability. The single row arrangement A4 promoted to the clones the greater shading capacity, characterized by high values of leaf area index, lower values of photosynthetically active radiation and by the densification of the arrangement of the other rows of alleys.
Highlights
Among the different cropping systems used, the integration of crop, livestock and forestry has been gaining prominence in the Brazilian agricultural scenario, with the objective of intensifying land use, through the spatial and temporal integration of the components of the productive system, to reach ever higher levels of product quality, environmental quality and competitiveness, combining increased productivity with the conservation of natural resources (BALBINO et al, 2011).The modalities contemplated in the iCLF are: crop-livestock integration; the crop-livestock-forestry integration; the livestock-forestry integration; and crop-forestry integration.FLORESTA, Curitiba, PR, v. 49, n. 2, p. 227-236, abr/jun 2019.Luz
The present study aims to evaluate the light interception of clones of Eucalyptus spp. in different structural arrangements for integrated production systems
Considering blocks, there was significant effect by the F test at 5% (0,01 ≤ p
Summary
Among the different cropping systems used, the integration of crop, livestock and forestry (iCLF) has been gaining prominence in the Brazilian agricultural scenario, with the objective of intensifying land use, through the spatial and temporal integration of the components of the productive system, to reach ever higher levels of product quality, environmental quality and competitiveness, combining increased productivity with the conservation of natural resources (BALBINO et al, 2011).The modalities contemplated in the iCLF are: crop-livestock integration; the crop-livestock-forestry integration; the livestock-forestry integration (silvopastoral practice); and crop-forestry integration (agroforestry).FLORESTA, Curitiba, PR, v. 49, n. 2, p. 227-236, abr/jun 2019.Luz.
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