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Now showing items 262-281 of 310

Screening for Resistance of Potato Lines to the Potato Tuberworm, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

Rondon, Silvia I.; Brown, Charles R.; Marchosky, Ruben (Potato Association of America, 2013-02)

The potato tuberworm, Phthorimaea operculella (Zeller) (PTW), is one of the most important limitations to potato, Solanum tuberosum L., productivity worldwide. Leaves, stems, petioles and more importantly, potato tube ...
Seed protein and chromosome number anaylses of experimental wheat x jointed goatgrass (Aegilops cylindrica Host) hybrid derivatives

Crémieux, Lis︡ele (2000-11-20)

The occurrence of seed-producing wheat x jointed goatgrass hybrids in infested wheat fields suggests the possibility of gene flow between the two species. This study investigates 'Madsen' wheat x jointed goatgrass F₁ a ...
Seed quality and plant establishment studies of seashore paspalum (Paspalum vaginatum Sw.)

Baker, Stanley D. (Stanley David) (2013-05-01)

Seashore paspalum (Paspalum vaginatum Sw.) is an important warm-season perennial turfgrass, known for its tolerance to salinity. Turfgrass is used for homes, municipalities, sod farms, resorts, and sports fields. Seashor ...
Seedling recruitment of hairy nightshade and other summer annual weeds in irrigated row crops

Peachey, Ronald Edward (2004-07-20)

This study evaluated the effects of tillage system, rotational tillage sequences, and winter seed burial depth on weed seedling recruitment in irrigated cropping systems. Notill (NT) planting of vegetable crops reduced ...
Selecting donor inbred lines for enhancing the performance of single-cross hybrids from key heterotic groups of oilseed sunflower (Helianthus annuus L.)

Cheres, Mercy Tuiya (1998-05-28)
Simple sequence repeat marker development and fingerprinting in Cuphea lanceolata Ait. and C. viscosissima Jacq

Karmarkar, Vidyadhar M. (2003-08-05)
Simple sequence repeat marker development and mapping in cultivated sunflower, Helianthus annuus L.

Yu, Ju-Kyung (2001-09-07)

The cultivated sunflower (Helianthus annuus L., x=17) is one of the most important annual oilseed crops in the world. There are very few publicly shared sequence-based DNA markers and genetic maps in sunflower, even th ...
Small broomrape (Orobanche minor) biology and management in red clover (Trifolium pratense) seed production

Lins, Ryan D. (2005-04-28)

Small broomrape (Orobanche minor) is a parasitic weed that attaches to the roots of red clover (Trifolium pratense). Small broomrape invasion presents a significant threat to the future of red clover seed production in O ...
Soil biochemical measures as ecological indicators across agricultural and forest ecosystems of Oregon

Knight, Timothy R. (2002-08-02)
Soil biological indices and nitrogen availability during a simulated transition from inorganic to organic sources of nitrogen

Fauci, Mary F. (1992-05-21)
Soil genesis, classification, and nitrogen cycling in forest ecosystems of the northwestern Rif region of Morocco

Ben Jelloun, Hassane (1993-06-15)
Soil pH and calcium effects on nodulation of nursery grown red alder

Crannell, Wanda K. (1993-12-10)
A soil property model for evaluating pesticide movement potential

Vogue, Margaret A. (1990-07-09)

Prevention of groundwater contamination by agricultural chemicals requires an understanding of the complex processes that control pesticide movement below the soil surface. Through this understanding it is possible to ...
Soil quality dynamics in an integrated reduced-tillage and cover-cropped vegetable agroecosystem

Banners, Candace R. (2005-07-01)

Soil response and function were investigated following the adoption of an integrated reduced-tillage and cover-cropped vegetable system in the Willamette Valley of Western Oregon. The experiment was conducted over thre ...
Soil water availability and chemical transport in a pear (Pyrus communis) orchard swelling clay soil under micro and flood irigation

Chen, Chengci, 1964- (1998-01-09)
Soils of the Oregon coastal fog belt in relation to the proposed "Andisol" order

Badayos, Rodrigo Briones (1982-08-20)

A study was conducted to evaluate the properties of soils in the fog belt area of the Oregon Coast Range. Soils in the study were chosen to include only those belonging to Andepts or to andic subgroups. Samples were c ...
Some physiological and biochemical aspects of haloxyfop herbicidal activity alone or mixed with dicamba

Alvarado, Renan A. (1990-06-18)
Spatial analysis and modeling of carbon storage in native shrubs of Senegal's Peanut Basin

Lufafa, Abel (2005-05-23)
Spatial analysis of soil depth variability and pedogenesis along toposequences in the Troodos Mountains, Cyprus

Robins, Colin R. (2004-08-17)

In unstable landscapes, modern pedological research explores the role of soils as products and indicators of geomorphologic change. Understanding the dynamics of hill slope pedogenesis is especially important in region ...
Spring irrigation management of perennial ryegrass (Lolium perenne L.) seed production

King, Craig Millhouser (2004-11-15)

Introduction of later maturing cultivars of perennial ryegrass (Lolium perenne L.) places more seed production fields in a period of drought common to Oregon during vital stages of reproductive development. During thes ...