Distribution of soil nutrients under and outside tree/shrub canopies on a revegetated loessial slope

Tillage Effects on Soil Quality Indicators and Nematode Abundance in Loessial Soil under Long- Term No-Till Production

Soil quality indicators and nematode abundance were characterized in a loessial soil under long-term conservation tillage to evaluate the effects of no-till, double-disk, chisel, and moldboard plow treatments. Indicators included soil electrical conductivity (EC), soil texture, soil organic matter (SOM), and total particulate organic matter (tPOM). Nematode abundance was positively correlated w...

Using Microwave Radar for Soil Moisture Inversion Under Soybean Canopies

The successful radar mapping of soil moisture under vegetation canopies would be a boon to agriculture, global climate change studies, water resource management and other areas. Toward this end, a series of polarimetric radar measurements of soybeans over the entire growing season of 1996 were made at Land C-band at the Long Term Ecological Research site at the Kellogg Biological Station, Hicko...

Effect of Slope Gradient and Soil Physical Properties on Soil Loss in Furrows of Rainfed Farms

This study was conducted to investigate the effect of slope gradient and soil physical properties (grain size distribution, bulk density, aggregate stability and permeability) on water erosion in the furrows of rainfed farms under fallow conditions. The furrows with 6 m length were installed in five rainfed farms with 6.1, 10.6, 14.8, 20.7 and 27.1% slope steepness at three replications. Resul...

Approach of Developing Spatial Distribution Maps of Soil Nutrients

One of the major components of precision agriculture is the precision fertilization. The basic principle of precision fertilization is to adjust the fertilizer input according to the specific circumstances or properties of soils in each location for the least waste and the highest profit. The paper presents a feasible approach for developing the spatial distribution map of soil nutrients based ...

A Portfolio of Nutrients: Soil and Sustainability