Caracterização e Composição Mineral do Capim Mombaça em Diferentes Condições de Pastejo, em Sistema de Integração Pastagem-Floresta.

Abstract

Silvopastoral system integration or pasture - forest systems that are consort pasture , animals and trees in the same area in order to add value and diversify production per area . These production methods are ideal for recovering degraded areas for sustainable land use . Systems integration grassland - forest maintain the viability of the system through improvements in soil quality , temperature , animal welfare and minimize impacts to the environment . The efficient use of this type of technology is linked to the development of efficient techniques that are specific to the management of grassland - forest systems integration . Knowledge of changes in the structure of grassland and influences that alter your productivity is needed to produce effectively in shaded systems . Through this study aimed to evaluate the different grazing conditions imposed by defoliation intensity in each system , causing changes in sward height within the same area and influences the type of system on the structure and chemical composition of pasture grass deployed composed of Mombasa in system integration of forest and grassland monoculture system. The variables evaluated were: total green mass , percentage of DM, dry mass of shoots, dry weight of leaf, stem and senescido material, number of tillers , leaf / stem ratio , LAI , root dry weight , percentage of leaves, stems and dead on pasture structure material, percentage ratio of minerals in mineral matter , exchangeable Ca , Mg , P , K , N g kg and crude protein percentage in dry matter . The experimental design was completely randomized split plot . The plots , systems : integrating forest and grassland monoculture plots and grazing conditions ( subpastejadas , intermediate and superpastejadas ) located within each area . Systems directly influence the productivity by modifying the structure and chemical composition of the grass . The system of monoculture presented superior integration grassland - forest for the production rates of total dry mass and components of leaves, stalks and senescido material, LAI , root dry weight and number of tillers per m² production system . The main nutrients systems were influenced by phosphorus , potassium, nitrogen and crude protein . That occurred in greater amounts in shaded system. The grazing conditions show variations of morphological components , rates of productivity and nutrient composition ranging being directly influenced by the height of each pasture conditions . Being the shading integration pasture - forest system , besides the leaf removal by animals , the second modification factor structure of grasslands in this environment .