Soil physical quality in response to intensification of grain production systems
| Autor: | MOTA, P. K., SILVA, B. M., BORGHI, E., VIANA, J. H. M., RESENDE, A. V. de, MOURA, M. S. de |
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| Přispěvatelé: | Paula K. Mota, Universidade Federal de São João del-Rei, Bruno M. Silva, Universidade Federal de Lavras, EMERSON BORGHI, CNPMS, JOAO HERBERT MOREIRA VIANA, CNPMS, ALVARO VILELA DE RESENDE, CNPMS, Maíse S. de Moura, Universidade Federal de São João del-Rei. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | The Brazilian Cerrado stands out in relation to grain production, however, in this region the occurrence of summer and irregular rainfall, drastically harm the non-irrigated production. Conservationist managements favor the soil physical quality and, consequently, the efficiency of soil water consumption. The objective of this study was to evaluate the soil physical quality, as a function of the conservation managements adopted, by using physical soil quality indicators, and to verify its relation with the soil organic carbon stocks and the grain yield in the Cerrado of Minas Gerais state, Brazil. For that, six treatments were evaluated: soybean (1) and maize (2) monocultures crop systems at medium level of investment in soil fertilization, soybean-maize crop succession at medium (3) and high (6) level of investment in soil fertilization, and crop succession of soybean-maize and intercropped with Urochloa ruziziensis at medium (4) and high (5) level of investment in soil fertilization, during the initial stage of no-tillage system. The treatments 3, 4, 5 and 6 showed improvement in the soil physical quality in relation to the monoculture. Pore distribution and soil organic carbon content were the main responsible for discriminating the intensified crop systems. Attributes related to water availability were important for plant growth in the 0-0.05 m layer, while for the 0.15-0.20 m layer, the highest soil aeration stood out. Productivity did not correlate with the evaluated attributes. Made available in DSpace on 2020-12-23T09:03:23Z (GMT). No. of bitstreams: 1 Soil-physical.pdf: 2382868 bytes, checksum: d980518e05247a91eb65787f543be67f (MD5) Previous issue date: 2020 |
| Databáze: | OpenAIRE |
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