Water retention capacity in Arenosols and Ferralsols in a semiarid area in the state of Bahia, Brazil
| Autor: | Everardo Valadares de Sá Barretto Sampaio, Maria do Socorro Bezerra de Araújo, Anildo Monteiro Caldas, Roberto da Boa Viagem Parahyba, Brivaldo Gomes de Almeida, Fernando Cartaxo Rolim Neto |
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| Přispěvatelé: | ROBERTO DA BOA VIAGEM PARAHYBA, CNPS, MARIA DO SOCORRO B. DE ARAÚJO, UFPE, BRIVALDO G. DE ALMEIDA, UFRPE, FERNANDO C. ROLIM NETO, UFRPE, EVERARDO V. S. B. SAMPAIO, UFPE, ANILDO M. CALDAS, UFRPE. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Irrigation
pore-size distribution Science 0208 environmental biotechnology Soil science 02 engineering and technology Silt soil-water retention curve Field capacity medicine sandy soils microporosity Solo Arenoso Porosity Multidisciplinary Sandy soils 04 agricultural and veterinary sciences Soil water retention 020801 environmental engineering Water retention Permanent wilting point Hydric soil Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Microporosidade medicine.symptom Retenção de Água no Solo |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Anais da Academia Brasileira de Ciências v.91 n.4 2019 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC Anais da Academia Brasileira de Ciências, Volume: 91, Issue: 4, Article number: e20181031, Published: 25 NOV 2019 |
| Popis: | One of the most serious problems in areas indicated for irrigation projects in the Brazilian Northeast region is the occurrence of sandy soils, known to have low moisture retention, but occurring in strategic locations in terms of water supply and geographical situation, and which can be used for agricultural purposes. The objective of this study was to evaluate the influence of particle size distribution and porosity on the water retention capacity of sandy soils in the semiarid area of the Northeast region. Soil bulk and particle densities, total porosity (macro, meso and microporosity), field capacity, permanent wilting point and soil-water retention curve were determined in samples of surface (A) and subsurface (C or Bw) horizons of ten sandy soil profiles. Particle size was determined subdividing the sand fraction into five classes. Higher amounts of the medium and fine sand fractions of the studied soils oriented their physical and hydric characteristics, being responsible for their great water retention. The arrangement of the fine silt, clay, fine sand and very fine sand particles may have provided a diversity of pore sizes and a good pore distribution, being responsible for the large proportion of micropores in the soils, allowing great water retention capacities. Made available in DSpace on 2019-12-11T18:12:44Z (GMT). No. of bitstreams: 1 WaterretentioncapacityinArenosolsandFerralsolsinasemiaridarea2019.pdf: 1423994 bytes, checksum: 2d2379a1eb34f3ecd185c03d658a3f80 (MD5) Previous issue date: 2019 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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