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 Author(s): SÁ, M. A. C. de; SANTOS JÚNIOR, J. de D. G. dos ABSTRACT: The aim of this work was to describe an equations to calculate the soil mechanical impedance by dynamic penetrometers. The calculations regard two different equipments, including theoretical... ... |
 Author(s): GOMES, R. da C.; NEVES, A. P.; ARAÚJO, T. A. C. de; SILVA, A. M. da; LATTA, K. I.; MENEZES, G. R. de O.; BONIN, M. de N.; TORRES JUNIOR, R. A. de A. Losses in mineral supplementation of grazing cattle is likely to occur in unsheltered troughs, mainly throughout the rainy season both by lixiviation and hardening. The aim was to evaluate supplement... ... |
 Author(s): AVILA, P. C.; JUNQUEIRA, A. da C.; GONCALVES, J. R. P.; MORICONI, W.; CANUTO, J. C. O sistema vivo, complexo e dinâmico do solo tem sido, no ultimo século, considerado apenas um suporte inerte para a obtenção de lucro pela agricultura convencional e os passivos de degradação de sua e... ... |
 Author(s): SOUZA, W. J. O. de; ROZANE, D. E.; SOUZA, H. A. de; NATALE, W.; SANTOS, P. A. F. dos The study was conducted in irrigated commercial orchards of ?Paluma? and ?Pedro Sato? guavas, which were mapped with a Garmin GPS unit (Cx60). Sixty five sampling points were marked on a 21 x 21 m sam... ... |
 Author(s): CANEPPELE, B. F.; VALANI, G. P.; OLIVEIRA, P. P. A.; PEZZOPANE, J. R. M.; BERNARDI, A. C. de C.; COOPER, M. In order to learn more about soil physical quality in integrated systems, this study proposed comparing soil penetration resistance in two different depths, 0 - 5 cm and 12.5 - 17.5 cm, in areas under... ... |
 Author(s): OLIVEIRA, R. L. L. de; VASCONCELOS, S. S.; TEIXEIRA, W. G.; KATO, O. R.; CASTELLANI Soil penetration resistance penetration is property important to characterize the state of soil compaction in cultivated systems. Thus, this work aimed to evaluate the impacts of management and moistu... ... |
 Author(s): SA, M. A. C. de; SANTOS JUNIOR, J. de D. G. dos ABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which direc... ... |
 Author(s): VASQUES, G. de M.; RODRIGUES, H. M.; COELHO, M. R.; BACA, J. F. M.; DART, R. de O.; OLIVEIRA, R. P. de; TEIXEIRA, W. G.; CEDDIA, M. B. Mapping soil properties, using geostatistical methods in support of precision agriculture and related activities, requires a large number of samples. To reduce soil sampling and measurement time and c... ... |
 Author(s): SILVA, L. I. da; CAMPOS, M. C. C.; WADT, P. G. S.; CUNHA, J. M. da; OLIVEIRA, I. A. de; FREITAS, L. de; SANTOS, E. A. N. dos; BRITO FILHO, E. G. de Os sistemas de manejo têm grande influência nas propriedades físicas do solo e estão relacionados com a compactação do solo. Assim, este trabalho teve o objetivo avaliar a resistência mecânica do solo... ... |
 Author(s): MORAES, M. T. de; DEBIASI, H.; FRANCHINI, J. C.; SILVA, V. R. da ABSTRACT: The soil penetration resistance is an important indicator of soil compaction and is strongly influenced by soil water content. The objective of this study was to develop mathematical models... ... |
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