Abstract Crabgrass ( Digitaria spp.) is deemed as a productive and nutritious warm‐season annual forage for livestock in the U.S. transition zone. However, there limited information about nitrogen (N) source rate effects on productivity nutritive value of crabgrass North Carolina. Herbage accumulation (HA), N removal, crude protein (CP), total digestible nutrients (TDN), tissue nitrate (NO 3 − ...

Urbanization, shrinking markets, and reduced forestry investment may affect harvesting efficiency in regions of the US South. To monitor these conditions, logging businesses have been tracked by surveys conducted universities trade associations. This project used a sampling approach coordinated with FIA utilization studies to sample crews based on location. The was develop relationships among f...

BACKGROUND: The results of RD works on the laboratory prototype a small disk harrow aimed for operation at mountainsides and capable to improve labor capacity yield highland forage lands by 1520% are presented.
 AIMS: developed module mountain tractor-drawn sections piedmont areas eliminate weed infestation soil; increase fertility lands, ensure stability grass against deflation erosion.&#...

Rare earth elements (REE) are powerful tracers for our understanding of sedimentary provenance and depositional processes. This study investigated geochemical characteristics REE in 226 sediment samples collected from the piedmont, central littoral plains North China Plain. Results showed that total concentrations exhibited a decreasing trend as piedmont > littoral, 82%, 70% 67% had higher than...