Data/hora: 03/06/2024 18:15:48

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 21/03/2023
Data da última atualização: | 21/03/2023
Autoria: | SILVA, L. de C. M. da; PEIXOTO, D. S.; AZEVEDO, R. P.; AVANZI, J. C.; DIAS JUNIOR, M. de S.; VANELLA, D.; CONSOLI, S.; ACUÑA-GUZMAN, S. F.; BORGHI, E.; RESENDE, A. V. de; SILVA, B. M.
Afiliação: | LUCAS DE CASTRO MOREIRA DA SILVA, Universidade Federal de Lavras; DEVISON SOUZA PEIXOTO, Universidade Federal de Lavras; RAPHAEL PASSAGLIA AZEVEDO, Universidade Federal de Lavras; JUNIOR CESAR AVANZI, Universidade Federal de Lavras; MOACIR DE SOUZA DIAS JUNIOR, Universidade Federal de Lavras; DANIELA VANELLA, University of Catania; SIMONA CONSOLI, University of Catania; SALVADOR FRANCISCO ACUÑA-GUZMAN, University of Puerto Rico; EMERSON BORGHI, CNPMS; ALVARO VILELA DE RESENDE, CNPMS; BRUNO MONTOANI SILVA, Universidade Federal de Lavras.
Título: | Assessment of soil water content variability using electrical resistivity imaging in an Oxisol under conservation cropping systems.
Ano de publicação: | 2023
Fonte/Imprenta: | Geoderma Regional, v. 33, e00624, 2023.
DOI: | https://doi.org/10.1016/j.geodrs.2023.e00624
Idioma: | Inglês
Conteúdo: | Agricultural systems are increasingly challenged of achieving high yields while optimizing plant water consumption. Soil conservation practices are preponderant in rain-fed agriculture for increasing water infiltration, water storage in the soil, and for promoting root development. This study aimed to assess the spatial-temporal soil water content t (0) dynamics identified by the application of electrical resistivity tomography (ERT) surveys in an Oxisol under grain production systems in the Brazilian Cerrado. The utilized cropping systems were: soybean monoculture (SS); maize monoculture (MM); maize/soybean rotation (MS); maize/soybean rotation with intercropped brachiaria (MBSB); maize/soybean rotation with high fertilizer investment (MS-HI), and MBSB and high fertilizer investment (MBSB-HI). ERT measurements were performed at field conditions using different time-steps during the rainy (March, 2019) and dry seasons (July 2018 and 2019). Logarithmic and power models were tested for evaluating the relationships between ? and the electrical resistivity (p). Results showed ERT was adequate for monitoring the spatial-temporal 0 variation and for inferring soil-plant related processes (i.e., water uptake and macro-porosity due to roots development). The power model was more suitable in depicting the 0 - p relationship, and for imaging the water unavailability for plants during the dry periods. Intercropped brachiaria positively affected the ? dynamics due to its aggressive root systems. MBSB-HI showed the highest 0 values in the rainy season, demonstrating that ecological intensified cropping systems can help overcome severe dry spells, in the Brazilian Cerrado.
Thesagro: | Conservação do Solo; Retenção de Água no Solo; Umidade do Solo.
Thesaurus Nal: | Agricultural conservation practice; Crop rotation; Soil water retention.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (30056-1) - UPC - AP - DD -  -  -  - DIS