Browsing by Author "Starner, David Eugene"
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- Field and laboratory characterization of soil water desorption properties and comparison of plant available water for two Virginia soilsStarner, David Eugene (Virginia Polytechnic Institute and State University, 1985)Soil water movement and desorption studies were conducted on two agriculturally important soil series. The soils selected were the Norfolk soil (a fine loamy, siliceous, thermic, Typic Paleudult) and the Cecil soil (a clayey, kaolinitic, thermic, Typic Hapludult). Water desorption properties were investigated in the laboratory and in situ. The soil water desorption curves developed in the laboratory for both soils were relatively uniform. This observation was also true for most horizons for the desorption curves developed from the field data. The results for the B horizons of the Cecil soil showed the greatest variability, with the field data being the most variable. Comparisons of the field and laboratory water contents at given tensions show the field values were lower than laboratory values for horizons with over 40 percent sand and less than 30 percent clay. Field values were higher than laboratory values in the B horizons of both soils. In all other horizons, the field values were close to those obtained in the laboratory. The Norfolk soil was found to contain more plant available water than the Cecil soil. The selection of an upper limit for plant available water estimation is critical, especially for the Norfolk soil. The Cecil soil yielded little water between -.05 and -.30 bars, whereas the Norfolk soil yielded a relatively large amount of water (more than 3 times greater) in this range. This would nearly double the predicted plant available water for the Norfolk soil. Results of this study show that the irrigation management of the Cecil soil would require smaller amounts of water applied frequently, whereas the Norfolk soil could hold larger amounts of plant available water applied less frequently. This would allow more time between irrigations.
- Registration of 'Secretariat' Winter BarleyGriffey, Carl A.; Brooks, Wynse S.; Vaughn, Mark E.; Berger, Gregory L.; Thomason, Wade E.; Pitman, Robert M.; Malla, Subas; Seago, John E.; Dunaway, David W.; Rucker, Elizabeth; Behl, Harry D.; Browning, Phillip; Schmale, David G. III; McMaster, Nicole J.; Hardiman, Thomas H.; Custis, J. Tommy; Starner, David Eugene; Gulick, Steve; Ashburn, S. Bobby; Jones, E. H.; Marshall, David; Fountain, Myron O.; Tuong, Tan Duy; Kurantz, Michael J.; Moreau, Robert A.; Hicks, Kevin B. (2016-08-30)‘Secretariat’ (Reg. No. CV-359, PI 673931) is a six-row hulled winter barley (Hordeum vulgare L.) developed by the Virginia Agricultural Experiment Station and released in May 2014. Secretariat, formerly designated VA08B-85, was derived from the cross VA00B-199/VA00B-259 and developed using a modified bulk breeding method. It was evaluated from 2012 to 2015 in the Virginia Official Variety Trials at five to six locations. Secretariat’s average grain yield (5907 kg ha−1) was higher than the check cultivars ‘Atlantic’, ‘Price’, ‘Callao’, ‘Nomini’, and ‘Wysor’ and similar to ‘Thoroughbred’. Average grain volume weight of Secretariat (61.1 kg hL−1) was similar to Thoroughbred, Atlantic, Price, and Callao and higher than Nomini and Wysor. Head emergence of Secretariat is 6 d earlier than the predominant cultivar Thoroughbred. Earlier maturity is a primary factor determining whether barley or wheat (Triticum aestivum L.) is used in double-cropping systems with soybean [Glycine max (Merr.) L.]. Grain of Secretariat produced an average starch concentration (56.9%) that was higher than Price and Callao, similar to Atlantic, but lower than Thoroughbred. Secretariat provides barley producers and end users in the eastern United States with a high-yielding, widely adapted, early-maturing winter barley cultivar that has good grain quality and is highly resistant to leaf rust (caused by Puccinia hordei G. Otth) and powdery mildew [caused by Blumeria graminis (DC.) E.O. Speer f. sp. hordei Em. Marchal].
- The Virginia Perennial Cool-Season Grass Forage Variety Report: a 3-Year Summary (2002-2004)Smith, S. Ray; Teutsch, Christopher D.; Thomason, Wade E.; Starner, David Eugene; Rucker, Elizabeth; Benson, Gordon B.; Dixon, Denton R. (Virginia Cooperative Extension, 2009)This report is a summary of forage variety trials performed with cool-season grasses at Virginia Tech Agricultural Research and Extension Centers from 2002 through 2004.