Produção de um sistema agroflorestal sob adubação orgânica em área degradada no Sertão Central do Estado de Pernambuco.

Abstract

The use of Agroforestry Systems (SAF's) under organic fertilization, through the association of xerophilous, arboreal, fruit, grass and legume species, besides recovering degraded areas by conventional agriculture, provides a multiplicity of positive options to the field man, highlighting the opportunity to have a continuous availability of products to the family consumption or for their herd. Thus, the objective of this work was to see the productivity of an SAF under organic fertilization in degraded area in the Coxi of Cadetes farm, in the municipality of Sertânia-PE. The experimental design was a randomized complete block (DBC), with four (04) treatments (increasing doses manure of ovine and caprine, 00, 02, 03 and 04 kg m-²). The Agrosilvicultural Agroforestry System Model adopted was of the type Alley Cropping, in an area of 432 m², in four plots (04) with 108 m². Each plot was composed for 09 gliricidias, 08 passion fruit trees, 24 forage palms and approximately 32 pit the corn + beans. The gliricidias remain with a fixed distribution in all plots, arranged in spacing of 3 m x 4 m, and the other species were intercalated among the trees, varying their location from plot to plot. The obtained data were submitted to analysis of variance and regression, considering a significance by the Tukey test of 5%. The variables height and diameter of the gliricidia were influenced by manure 6 months after planting in the field. Already the biomass production (green and pre-dry) was not affected. The manure rates did not influence green biomass production, number of cladodes and biometrics of forage palm, production of passion fruit and bean grains. The production "in nature" of corn ears was influenced by manure, but the attack by the "cartucho" caterpillar can have influenced these results. It is recommended that the application of ovine and caprine manure to the soil be carried out before planting the annual crops, since it requires time to be mineralized. Even without the manure influence at crop production, the observation that the SAF provided a long range of products, increased some degraded soil chemical properties and increased faunistic biodiversity.