AS  Vol.4 No.11 A , November 2013
Water infiltration and time to recharge the profile of three soils Rio Grande do Sul, Brazil
Abstract: The Rio Grande do Sul-RS State, even with average annual rainfall of 1.721 mm, has shown a lack of water in the soil for crop production. The study aimed to determine the variation of annual and seasonal precipitation over the time; determine the year seasons that can provide the recharge of water into the soil profile and estimate the time needed to fulfill the soil pore space with water from effective rainfall with different scenarios of water infiltration. The soil uses were: oxisol; Red Yellow Podzolic and Planosolo Hydromorphic Eutrophic respectively in the North, Centre and South of RS State. We determined the total variation of annual rainfall, mean annual potential evapotranspiration and the time required to refill the soil profile for three infiltration scenarios: with fractions 1/2, 2/3 and 3/4 of effective rainfall. In the regions of Passo Fundo, Santa Maria and Santa Vitóriado Palmar, from 1914 to 2004 there was no reduction in the annual volume of rainfall. Considering that 50% of soil volume and water storage are met and that the fraction 1/2, 2/3 and 3/4 of the effective rainfall infiltrates into the soil, the recharging time profile varies from 3.7 to 16.6 years, infiltrating 2/3 range from 1.8 to 6.6 years and infiltrating 3/4 of effective precipitation range from 1.2 to 5.1 years, the time required to refill the entire soil porous space. The recovery of water storage in the soil profile must occur mainly during winter, followed by spring and fall.
Cite this paper: Righes, A. , Buriol, G. and Estefanel, V. (2013) Water infiltration and time to recharge the profile of three soils Rio Grande do Sul, Brazil. Agricultural Sciences, 4, 12-18. doi: 10.4236/as.2013.411A002.

[1]   Buriol, G.A., Estefanel, V., Saccol, A.V., Heldwein, A.B. and Schneider, F. (1980) Possibility occurrence of available soil water in the state of Rio Grande do Sul. Journal of Rural Sciences Center, 10, 1-141.

[2]   Avila, A.M.H. (1994) Rainfall regime in the state of Rio Grande do Sul based on long-term series. Dissertation, UFRGS, Faculty of Agronomy, UFRGS Porto Alegre, 75 p.

[3]   Brazil Ministry of Agriculture (1973) Reconnaissance soil survey of the state of Rio Grande do Sul Recife. Technical Bulletin, 30, 431.

[4]   Embrapa (1999) Brazilian system of soil classification. Production Information Service, Brasilia, 412 p.

[5]   Righes, A.A., Nishijima, T., Denardin, J.E., Kochhann, R. A. and Garcia, S.M. (2002) Vertical mulching and runoff inno-tillage system. XIV Brazilian Meeting of Management and Conservation of Soil and Water, Cuiabá.

[6]   Machado, F.P. (1950) Contribution to the study of the climate of Rio Grande do Sul. Brazilian Institute of Geography and Statistics, Rio de Janeiro, 91 p.

[7]   Agronomical Research Institute (1989) Agroclimatic Atlas of the State of Rio Grande do Sul Porto Alegre: Secretariat of Agriculture and Supply, 1, 102 p.

[8]   Ministry of Agriculture (1972) Water Balance of Brazil. National Department of Meteorology, 94 p.

[9]   Righes, A.A. (2002b) Water: Sustainability, use and availability for irrigation. Science and Environment, 21, 90-102.

[10]   Bertol, I., Beutler, J.F., Milk, D. and Batistela, O. (2001) Physical properties of a humic cambisol affected by the type of soil management. Scientia Agricola, 58, 555-560.

[11]   Denardin, J.E. (1992) Soil: Formation anddegradation. In: Marcantonio, G., Ed., Soilsand irrigation, UFRGS/FEDERACITE, Porto Alegre, 13-28.

[12]   Spera, S.T, dos Santos, H.P., Fontaneli, R.S., Kochhann, R.A., Denardin, J.E. and Spera, M.R.N. (2002) Soil compaction in southern Brazilian oxisols under no-till system. In: International Conference on Land Degradation and Meeting of The IUSS Sub-commission C-Soil and Water Conservation, Rio de Janeiro, 1-3.

[13]   Albuquerque, J.A., Sangoi, L. and Ender, M. (2001) Effects of crop/livestock integration in soil physical properties and characteristics of corn. Brazilian Journal of Soil Science, 25, 717-723.

[14]   Denardin J.E., Kochhann, R.A. and Righes, A.A. (2005) Vertical mulching: Technical management of runoff in tillage. Tillage Magazine, 14, 37-39.

[15]   Pashiardis, S. (2009) Trends of precipitation in Cyprus rainfall analysis for agricultural planning.

[16]   WMO (2000) Detecting trends and other changes in hydrological data. World Meteorological Organization (WMO/TD No. 1013), Geneva, 157 p.

[17]   de Campos, H. (1983) Non-parametric experimental statistical. 4th Edition, ESALQ, Piracicaba, 349 p.

[18]   Thornthwaithe, C.W. and Mather, J.R. (1955) Water balance climatology. Publications in Climatology, 8, 1-104.

[19]   Peraza, J.E.S. (2003) Water retention and pedofunctions for soils of Rio Grande do Sul. Masters Thesis, Graduate Program in Agricultural Engineering, Federal University of Santa Maria, Santa Maria, 117 p.