Requirements imposed by government farm policies, shifts in the economics of farming
practices, and the public's concern in protecting the environment and conserving our natural …

Agricultural intensification has greatly increased the productive capacity of agroecosystems,
but has had unintended environmental consequences including degradation of soil and …

In order to maintain high yields and protect the environment, the replacement of chemical
fertilizers with organic ones has received increasing attention in recent years. A 2-year field …

In agricultural systems, optimization of carbon and nitrogen cycling through soil organic
matter can improve soil fertility and yields while reducing negative environmental impact. A …

The availability of Haber-Bosch nitrogen (N) has permitted agricultural intensification and
increased the productive capacity of agroecosystems; however, approximately 50% of this …

Macronutrient inputs to annual cropping systems can benefit weeds as well as crops,
sometimes decreasing or eliminating the benefits of fertilization. This interaction between …

Emissions of N 2 O were measured following combined applications of inorganic N fertiliser
and crop residues to a silt loam soil in SE England, UK. Effects of cultivation technique and …

Throughout virtually all of the history of agriculture, the nitrogen harvested from cropped
soils has been replenished, if it has been replenished at all, by leguminous nitrogen fixation …

A 12-week greenhouse experiment was conducted to determine the effect of the polyphenol,
lignin and N contents of six legumes on their N mineralization rate in soil and to compare …

The return of crop residue to the soil has been suggested as a nutrient-conserving practice
that effectively increases soil fertility and crop nutrition. However, the overall direction and …