This experimnet began in 1888 at a cool temperate site. The site was used as
pasture up until 1886, corn was grown 1887 and 1888. the soil is described as
Mexico series (fine montmorillonitic, mesic ...
This experiment was established in 1958 and consists of a continuous
corn system with various levels of nitrogen application. In the
preceding 25 years, there was continuous corn
with residue burning. ...
This experiment began in 1843. The site was possibly farmed since
Roman times (i.e at least 1500 years). Map of 1623 shows field in
arable use. 1839-1843 arable crops: turnips, barley, peas, wheat, ...
This database contains boron tolerance information for a variety of
agricultural crops. The information was compiled from a variety of
studies and the data serve only as guidelines to relative tolerances. ...
This database contains salinity tolerance information for a variety
of grasses and forage crops. The information was compiled from
a variety of studies and the data serve only as guidelines to relative ...
(adapted from project summary)
Problems: Carbon in soils varies quantitatively and with depth
depending on theland use management. Some management practices allow
for considerable sequestration and ...
(from Project Abstract)
Problem: the objective of this research is to determine and contrast
soil nitrogen, soil carbon, and soil phosphorus accumulation and
availability under common farming systems ...
(Adapted from project abstract)
1. Conventional tillage continuous cotton production severely depletes
soil carbon and degrades the soil.
2. There is a paucity of data related to long-term ...