Nitrogen availability is among the major limiting factors for production of organic crops. A central goal farming, according to certification standards, rely on ecological and biological principles build maintain soil health. most complex nutrient elements with respect its different chemical forms flow within environment at soil, microbial, plant, aquatic, atmospheric levels. Because, from an p...

Nitrogen exists in soils in many forms and constantly changes from one form to another. The paths that the different forms of nitrogen follow through the ecosystem are collectively called the nitrogen cycle (Figure 1). Understanding how the different pools of nitrogen interact and the processes by which these forms enter and leave the cycle is the subject of continuing study. Nitrogen is found ...

[1] Understanding the processes driving the carbon cycle in the Arctic Ocean is important for assessing the impacts of the predicted rapid and amplified climate change in this region. We analyzed settling particle samples intercepted by a time-series sediment trap deployed in the abyssal Canada Basin (at 3067 m) in order to examine carbon export to the deep Arctic Ocean. Strikingly old radiocar...