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Effects of different management systems on the physical properties of a clay yellow latosol of the state of amazonas brazil



Effects of different management systems on the physical properties of a clay yellow latosol of the state of amazonas brazil



Pesquisa Agropecuaria Brasileira 19(11): 1417-1422



The influence of different management systems on the physical properties of a clay yellow latosol (Typic Acrorthox) grown to rubber-tree (Hevea spp.) was studied at the Experiment Station of the Rubber and Oil Palm Research National Center, located in Manaus, State of Amazonas, Brazil. The experiment design was a randomized one with 6 treatments and 3 replications. The following treatments were studied: tillage without vegetative cover; no-tillage with vegetative cover no-tillage without vegetative cover and virgin forest (check). The vegetative cover consisted of the legume kudzu tropical (Pueraria phaseoloides). Due to the large proportion of mineral fractions < 0.002 mm as well as to the high degrees of flocculation, this soil presented a considerably high aggregate stability and a low erodibility hazard. The vegetative cover was the most important variable since it was the one which produced the best soil tilth. When associated with the no-tillage practice it was almost as good as the virgin forest in improving and preserving the physical condition of the soil.

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Accession: 005300143

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