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agricultural statistics; census data; surveys; data collection; data analysis; United States
Abstract:
... The transfer of the census of agriculture from the U.S. Bureau of the Census to the National Agricultural Statistics service provided an opportunity for the Agency to improve both the census and its ongoing survey and estimation program through effective integration of the two. This paper addresses the re-engineering of the census processing system into a generalized edit and analysis system for u ...
water pollution; simulation models; no-tillage; soil water content; groundwater recharge; surface water; seepage; rain; runoff; water table; agricultural watersheds; Georgia
Abstract:
... We used the Root Zone Water Quality Model to simulate runoff and seepage below the root zone from a 2.7 hectare watershed to look at rates of ground water recharge under long-term, no-till crop production systems in the Piedmont of Georgia. The watershed is located at the USDA-ARS-JPCNRCC (J. Phil Campbell Sr., Natural Resource Conservation Center) in Watkinsville, Georgia. It has been in crop pro ...
Natural Resources Conservation Service; air quality; nutrient management; feeds; water quality; dairy animals; education programs; beef cattle; animal manure management; soil quality; swine; case studies; excretion; poultry
Abstract:
... In 2006 the feed management education project was implemented for the species of beef, dairy, poultry and swine. The project is national in scope and funded by the USDA - Natural Resources Conservation Service (NRCS) Conservation Innovation Grant program. The project is designed to encourage adoption of the NRCS Feed Management Conservation Practice Standard 592 and feed management practices that ...
male genitalia; insect morphology; insect taxonomy; biological nomenclature; taxonomic revisions; Phytocoris; new status; new species; Virginia
Abstract:
... The plant bug Phytocoris hoffmani is described from specimens collected in Highland County, Virginia. This new species belongs to the Phytocoris junceus group and is most closely related to P. dreisbachi Knight. Photographs of the adult and figures of male genitalia of P. hoffmani are provided to help distinguish it from other species of Phytocoris. In addition, P. dentatus Knight, described from ...
transplanting (plants); forest trees; forest nurseries; history; seedlings; plant density; age structure; seed quality; seeds; transplanters; methodology; forest plantations; United States
Abstract:
... A brief history of twentieth century transplanting at forest nurseries is presented, including many historical photographs. Transplanting was the normal method of producing plants for reforestation in the first half of the 20th century, and the operation was all done by hand or with rudimentary horse-drawn machinery. Seeds were broadcast sown, the seedlings grown for 1 to 2 years, harvested, and t ...
stormwater; vadose zone; rain; field experimentation; subsurface flow
Abstract:
... Flowpaths of stormwater from upland ar-eas have long been the subject of major debate. A series of subsurface gutter experiments, situated on the mid-slope of a Piedmont catchment, were conducted to inves-tigate a potential mechanism for the rapid mobilization of storm runoff from the unsaturated zone. Gutters were 1.45 m long and installed approximately 10 cm below the ground surface. Direct surf ...
... The ability to detect small amounts of materials, especially bacterial organisms, is important for medical diagnostics and national security issues. Engineered micromechanical systems provide one approach for constructing multifunctional, highly sensitive, real-time, immunospecific biological detectors. We present qualitative detection of specific Salmonella enterica strains using a functionalized ...
... A virus induced crumbly fruit disease of considerable importance in 'Meeker' and other cultivars of red raspberry has been observed in northern Washington, USA, and British Columbia, Canada and to a lesser extent in the Willamette Valley of Oregon. Raspberry bushy dwarf virus (RBDV), a pollen-borne virus, has been considered the causal agent of the disease. However, dsRNA extractions from raspberr ...
water supply; agricultural research; water allocation; irrigation management
Abstract:
... The evolving roles and critical priorities of irrigated agriculture, as perceived by practitioners, researchers, and policy makers, were reviewed. Irrigated agriculture has played a vital role in meeting food and fiber demands on a relatively small proportion of total arable land. This role is presently expanding to also include biofuel and industrial materials production. At the same time, water ...
... The Coastal Plains Soil, Water, and Plant Research Center has been monitoring spatial yield in a test field since 1985, using a conventional corn-wheat-soybean rotation most of that time. Observations of variation in soil and crop response that correlate with yield variation suggest that crop water relations may be the key feature that causes spatial variability in yield for the Southeastern Coast ...
... Mitochondrial aldehyde dehydrogenase (ALDH2) is the major ALDH isozyme involved in acetaldehyde metabolism. It is well established that a single nucleotide substitution (G to A) leads to the amino acid change (Glu487Lys) and dominant inactivation of ALDH2 activity. Inactivation of ALDH2 activity causes the aversive reactions associated with “flushing” response observed in many East Asian people fo ...
botanical composition; vegetation cover; data analysis; remote sensing; accuracy; stand structure; forests; Lassen National Forest; California; Modoc National Forest
Abstract:
... The accuracy of a northeastern California vegetation map was assessed using the data from a grid of permanent Forest Inventory and Analysis (FIA) plots collected by Region 5 and the Pacific Northwest Research Station (PNW). The map was assessed in three parts: the Modoc National Forest, the Lassen National Forest and the lands outside National Forest boundaries. Accuracy was assessed hierarchicall ...
wood; tree age; testing; acoustic properties; wood quality; lumber; stand characteristics; Tsuga heterophylla; Picea sitchensis; nondestructive methods; Alaska
Abstract:
... With the move to intensive forest management to meet wood demand and to preserve the environment, southeast Alaska is experiencing a period of significant change in terms of wood characteristics or wood quality. In order to responsibly manage the young-growth stands, it is important to evaluate tree quality prior to harvest and understand the product and economic potential of the wood fiber in sta ...