A Biological Slope-Ratio Method for Evaluating Nutrient Availability in Soils

Effects of pCO2 and iron availability on nutrient consumption ratio

Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko, Chiba 270-1194, Japan Faculty of Environmental Earth Science, Hokkaido University and CREST-JST, North 10 West 5, Kita-ku, Sapporo, Hokkaido 060-0810, Japan Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Kita-ku, Sapporo, Hokkaido 060-0810, Japan ...

Seasonal Changes in Nutrient Availability for Sulfur-amended Everglades Soils under Sugarcane

The objective of this study was to evaluate effects of elemental sulfur (S) addition on soil pH and availability of macroand micronutrients during the sugarcane growing season. Sulfur application did not significantly reduce soil pH when applied at 0 to 448 kg S ha−1 due to the high soil buffering capacity. Water extractable phosphorus (P) and potassium (K) for soils receiving the highest S rat...

Nutrient Mobility and Availability with Selected Irrigation and Drainage Systems for Vegetable Crops on Sandy Soils

A Proposed Modeling Method in Finite Element Slope Stability Analysis

Limit-equilibrium method (LEM) and finite element method (FEM) with strength reduction method (SRM) techniques are the most widely used analysis tools in slope stability assessment. Recently, researchers have reported that both factor of safety (FOS) values and failure surfaces obtained from LEM and FEM are generally in good agreement, except in some particular cases. In this paper, the FOS and...

The effects of Glycine max and Helianthus annuus on nutrient availability in two soils

The effects of two plant species—soybean (Glycine max), and sunflower (Helianthus annuus) on nutrient availability in two soils (an organically farmed soil, OF, and a native grassland soil, GS, both Alfisols)—were measured with anion exchange membranes (Plant Root Simulator, PRS probes) in a greenhouse study. Vegetation (especially sunflower) in the OF soil caused significant reductions in soil...