Transitional areas between upland and aquatic habitats, commonly known as
wetland, were once viewed as unproductive areas and were drained for farming or
pasture. Wetlands are now accepted as significant ecological resources, and their
protection is a mandate of federal, state, and local land managers. Due to the
diversity of...
Background: Pearl millet [Pennisetum glaucum (L.) R. Br.] is a widely cultivated drought-and high-temperature tolerant C4 cereal grown under dryland, rainfed and irrigated conditions in drought-prone regions of the tropics and sub-tropics of Africa, South Asia and the Americas. It is considered an orphan crop with relatively few genomic and...
The western states include a complex combination of geological, topographical, climatic, and vegetative features. The region extends through 1900 km of latitude and contains three major north-south, storm-directing mountain systems. Most of the region is arid (annual precipitation < 50 em); however, sizeable agriculturally important areas west of the Cascade...
Yield, occurrence of root canker (B deficiency), and leaf nutrient concentrations of the Morse strain of ‘Detroit Dark Red’ table beet (Beta vulgaris L.) as influenced by combinations of lime and N, B, and P fertilizers were evaluated in three studies. Greatest total yields and most favorable distribution of root...
Bush beans (Phaseolus vulgaris L.), carrots (Daucus carota L.), and lettuce (Lactuca sativa L.) were grown for 3 years on soils amended with S or lime and N fertilizer. Yields of all crops increased with lime application but response to N varied among crops and years. Lettuce head weight tended...
Experiments at the North Willamette Experiment Station have evaluated response of vegetables to lime and other fertilizers since 1970. The soils are moderately acid (pH 5.4 to 5.6), high in P, and better drained than most soils used for vegetable crop production in western Oregon. Typical soil acidity problems such...
Corn (Zea mays L., 'Illinois WF 9x38-11') and potato (Solanum tuberosum L., 'Russet Burbank') were grown in dithizone purified nutrient solutions to contrast relationships between dry matter yield, tissue phosphorus (P) concentration, and tissue zinc (Zn) concentration as they influence the development of Zn deficiency and P toxicity. Treatments consisted...
Wetland soils with complex stratigraphy and redoximorphic features occur on the
margin of the Willamette Valley, Oregon. In the Jackson-Frazier wetland, vertisols
show three distinct stratigraphic units that rest uncomformably upon each other and
correspond to the Bashaw series Bss, 2Bt and 3BC horizons. Holocene alluvium
deposited as distal alluvial...
