The Billa Billa Folow Management Experiment was initiated in 1983. The soil
parent material at the site consists of cretaceous sediments (lithic
sandstone). The native vegetation was cleared in 1971. ...
Problem: Soil organic matter levels have declined to about 50% oftheir
original values where wheat/fallow rotations have been practiced using
intensive tillage in the Northern Great Plains.
(adapted from abstract presented at ARS carbon storage meeting,
Baltimore Jan 1999)
Problem: Conventional tillage, crop-fallow dryland fanning systems in
the central and northern Great Plains utilized ...
The Agricultural Statistics of the Former Soviet Union and the
Baltic States database contains per annual statistical data by
republic for the period 1960-92 for the Russian Federation
Soviet Union ...