gypsiferous soils occur in xeric, ustic, and aridic moisture regimes. environmental conditions affect the mode of gypsum formation. gypsiferous soils in fars province, southern iran, are found in piedmont plains, flood plains, and alluvial plains. the objective of this work was to investigate the micromorphology of gypsum crystals formed under different soil moisture regimes. the results indica...

Abstract Water erosion is one phenomenon causing land degradation in a wet area. The research was aimed to evaluate the total of soil under coffee plantations having coarse textured tropical regions. This taken out on plantation Sibarasok, Maninjau rather very steep slope and high annual rainfall, with Inceptisol order. Soil samples were from 6 units (Coffee-86 y 0-8%, 25-45%, >45%, Coffee 5...

Increased poultry production has contributed to excess nutrient problems in Atlantic Coastal Plain soils due to land application of poultry litter (PL). Aluminum sulfate [alum, Al(2)(SO(4))(3).14H(2)O] amendment of PL effectively reduces soluble phosphorus (P) in the PL; however, the effects of these litters when added to acidic, sandy soils are not well understood. The objective of this study ...

Various soil texture schemes are in current use. These differ in the size ranges of their particle fractions. There is a need to establish simple methods to correlate these conventional schemes. Therefore I have defined closed-form exponential and power law functions to fit models to cumulative particle-size distribution data. I have tested the functions for their suitability (i) to represent c...

This study investigated the moisture distribution characteristics of a soil wetting body under different influencing factors to inform design and management moistube irrigation system. A mathematical model movement was established based on Hydrus-2D software. The suitability simulation verified by laboratory experiments. Numerical simulations were carried out with investigate influence texture,...

Selenium is a trace element in animal nutrition provided through forage. Vegetation should accumulate adequate levels to meet this livestock requirement. This study assessed southeastern Missouri soils for their selenium concentrations. Multiple sites across were sampled, from which total of twenty-six collected. Parent materials ranged coarse fine-textured alluvium and terrace deposits, colluv...