Plantas de cobertura e uso do fósforo nos atributos físicos do solo

Abstract

The agricultural soil suffers great impacts, being the compaction regarded the great cause of those efects in function of traffic trators and agricultural machines in inappropriate conditions of management. This work has as objective to evaluate the effect of differents cover plants among under sources of phosphorus on physical attributes of soil, such as the porosity and soil density. The experiment was conducted in the experimental area of UTFPR-DV with three blocks at random, in parcels of 5x5 meters. The treatments will consist of differents cover plants: vetch (Vicia cracca), turnip-fodder (Raphanus sativus), oat (Avena strigosa), rye (Secale cereale), ryegrass (Lolium multiflorium), lupin (Lupinus albus), residual application annual between 2009 to 2015 of superphosphate simple, natural phosphate and without use of phosphorus. The results will be submited to analyse of variance, and the comparison between the average made from Tukey test, to a 5% of probability. The expected results were being obtained positives answers of cover plants and use of the phosphorus in porosity of soil in relation to fallow, the production of biomass greater in the areas with use of the phospohorus and effects of root system more aggressive in function of increase of the soil porosity.