Quantity-to-intensity (Q/I) relationships can efficiently characterize intensively cultivated agricultural soils in Bangladesh for better potassium supplying capacity

Potassium Supplying Capacity and High Efficiency Use of Potassium Fertilizer in Upland Soils of Hunan Province (China)

Potassium Relationships of Three Ohio Soils

Three Ohio soils, Hoytville clay, Brookston silty clay loam, and Wooster silt loam located at various branches of the Ohio Agricultural Research and Development Center, were studied. Bulk samples from each horizon were tested for exchangeable basic cations, pH, sulfuric acid extractable potassium (K+), and particle-size distribution. The surface horizons of each soil were characterized by measu...

Effect of Long-term Lime and Potassium Applications on Quantity-Intensity (Q/I) Relationships in Sandy Soil

The effects of long-term lime and K applications on quantity-intensity (Q/I) relationships were investigated on the Ap and B21t horizons of a Kalmia soil (a fine-loamy over sandy or sandy-skeletal, siliceous thermic (Typic Hapludults) from the Delaware Coastal Plain. The predominant mineral suite of the <2faa clay fraction was mica, vermiculite, and chloritized vermiculite. Soil pH and exchange...

Innovation Capacity in Agricultural Sector

The changing context for agricultural development has highlighted a strong need to understand and adoptinnovation systems thinking. Science, technology and innovation policy has equated rural development toagricultural development. The main objective of this paper was to examine the role of innovation capacity inagricultural sector. With the growing diversification of rural livelihood options i...

Changes of soil organic carbon in an intensively cultivated agricultural region: a denitrification-decomposition (DNDC) modelling approach.

Regional modelling of soil organic carbon (SOC) dynamics is important for predicting large-scale patterns in carbon cycling and for assessing potential responses of soil carbon pools to land-use change. However, data uncertainties related to both spatial heterogeneity and small-scale differences in farming practice related to cropping systems affect the accuracy of regional models. A case study...