These studies were initiated to investigate the influence of previous
superphosphate fertilizer practices and grazing stock history on
nitrogen, phosphorus and sulphur status in soils from grass-legume
pastures. Four Western Oregon soil series, Dixonville, Demint,
Winema and Josephine, were included in the study. Laboratory experiments
and greenhouse trials were conducted...
Irrigated pastures are usually composed of a mixture of improved grasses and legumes. Maintaining a proper balance between grasses and legumes is essential to obtain maximum production.
Management is the key to production from irrigated pastures. Proper management of livestock and irrigation water can materially increase pasture production.
Improved nonirrigated pastures consist of subterranean clover) New Zealand white clover or lotus major (big trefoil). These legumes are generally planted with perennial or H-1 ryegrass, alta fescue, orchardgrass, or meadow foxtail.
Fertilizing weeds and weedy grasses (bent, velvet, and June grass) seldom pays.
Forage production is of primary importance to Oregon’s livestock enterprises and agricultural economy. The forage is either grazed or conserved.
Conserved forage is needed to feed livestock in times of little forage growth—a key cost of livestock production. Extending the grazing season reduces the cost and time involved in feeding...
Irrigated pastures in western Oregon usually consist of Ladino or New Zealand white clover and Alta fescue, perennial ryegrass, orchardgrass, or meadow foxtail. These recommendations are intended for improved pastures with a good stand of clover and improved perennial grasses. Fertilizer seldom pays on weeds or weedy grasses.
Soil acidity is a major factor inhibiting pasture production in western Oregon. The typical management solution to acidic soil problems is to lime. However, lime cannot be incorporated directly into the soil in established pasture. The only alternative is topdress or surface apply lime and wait for soil fauna to...