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M.H.J.P. Gunarathna, Kazuhito Sakai, Tamotsu Nakandakari, Kazuro Momii and M.K.N. Kumari
Poor data availability on soil hydraulic properties in tropical regions hampers many studies, including crop and environmental modeling. The high cost and effort of measurement and the increasing demand for such data have driven researchers to search for...
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Mirriam Phiri, Jan Mulder, Benson H. Chishala, Lydia M. Chabala and Vegard Martinsen
Soils on many smallholder farms in Southern Africa are severely depleted in plant nutrients, in particular phosphorus (P), following years of maize monocropping with little or no fertilizer input. Past studies suggest that pigeon pea (Cajanus cajan (L.) ...
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Leany Enid Lugo-Avilés, Martha Laura López-Moreno, Felix R. Roman-Velazquez and Joel Lugo-Rosas
Agricultural soils are degraded worldwide as result of anthropogenic activities; environmental contamination; and excessive use of chemicals, fertilizers, and pesticides. Scientists are concerned about this problem; during the past few years sewage compo...
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Arcesio Salamanca-Carreño, Mauricio Vélez-Terranova, Oscar Mauricio Vargas-Corzo, Otoniel Pérez-López, Andrés Fernando Castillo-Pérez and Pere M. Parés-Casanova
Savannah floodplains are a natural agroecosystem located in the eastern plains of Colombia, with soils considered to be of low fertility. This assumption has not been rigorously validated by direct experimental studies. The aim of the study was to analyz...
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Jacques Carvalho Ribeiro Filho, Eunice Maia de Andrade, Maria Simas Guerreiro, Helba Araújo de Queiroz Palácio and José Bandeira Brasil
Soil?s physical and hydrological properties influence the proper modeling, planning, and management of water resources and soil conservation. In areas of vertic soils subjected to wetting and drying cycles, the soil?water?atmosphere interaction is comple...
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Ouahcène Nait-Rabah, Flavio Germain, Yannick Estevez, James Guiraud, Gildas Medjigbodo, Daniel Dias and Chadi Maalouf
This paper presents the first laboratory study of four materials (three lateritic soils and one sandy soil) mainly used in road construction in French Guiana. The analysis of macroscopic behaviour by physical tests, following French standards, made it po...
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Luisa Carla de Alencar Menezes, Antonio Carlos Rodrigues Guimarães, Maria Esther Soares Marques, Tales Santos Ribeiro and Filipe Almeida Corrêa do Nascimento
The criteria for selecting materials for railway pavement (particle size distribution, California Support Index, and physical indexes) are not suitable for evaluating the hydraulic behavior of tropical soils under unsaturated conditions, often resulting ...
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Avirut Puttiwongrak, Solina Keo, Sakanann Vann, Tanwa Arpornthip, Thongchai Suteerasak and Piti Sukontasukkul
Understanding the technical properties of the subsurface soil is essential for carrying out any building project correctly. In sandy soils in Phuket, Thailand, a correlation between electrical resistivity and the SPT N-value should be established in desi...
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Daniel M. Alongi
Mangroves are carbon-rich ecosystems that store large quantities of carbon, mostly in soils. Early carbon (C) budgets indicated that >50% of mangrove C fixation was unaccounted for. This ?missing C? has now been discovered to be a large release (423 Tg C...
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Marcelo F. Pompelli, Alfredo Jarma-Orozco and Luis Alfonso Rodríguez-Páez
Jatropha curcas is a woody-shrub species of the Euphorbiaceae family that is widely distributed in tropical and subtropical areas. The great interest in its cultivation lies in the potential for achieving elevated yields of a high-quality oil. Another ch...
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