- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 211 to 220 of 1184 (0.054 seconds)| 211 |
Cultivar and Nitrogen Effects on Yield and Grain Protein in Irrigated Durum Wheat, 2012Wang, Guangyao (Sam), Brunson, Kevin, Thorp, Kelly, Ottman, Mike 05 1900 (has links)
The grain yield and nitrogen use efficiency of durum wheat vary in response to genotypic and nitrogen fertilization were studied in field during two growth seasons. The aim of this study was to evaluate the effects the N fertilizer rate on grain yield and quality under irrigated desert conditions in relation to N utilization. Six durum wheat cultivars (Duraking, Havasu, Kronos, Ocotillo, Orita, Topper) were grown in field trails under irrigated regimes at five N levels (0, 65, 110, 160, 240 lbs/acre) in 2010-2011 and six N levels (0, 65, 110, 160, 240, 360 kg ha-1) in 2011-2012 at Maricopa Ag Center. The results showed the varieties and N levels both significantly affected grain yield, grain protein concentration, and nitrogen use efficiency. A simple and rapid method to measure crop N status using SPAD meters was also developed. The results showed that using the differences in SPAD readings between the first and second fully expanded leaves is a useful way to improve effectiveness of SPAD meters in durum wheat N management.
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Effect of Planting Date on Wheat Yield in Yuma, 2013Ottman, M. J. 05 1900 (has links)
Planting dates are known to affect wheat yields. Previous research has shown that the optimum planting date in Yuma is December 15 to January 15. Wheat is sometimes sown later than this in the Yuma area, and earlier planting dates have not been tested. To test a wide range of planting dates, six varieties(Duraking, Havasu, Joaquin, Kronos, WB-Mead, and Yecora Rojo) were planted at two seeding rates (160 and 240 lbs/A) and six planting dates at the beginning of each month from November through April at the Yuma Valley Agricultural Center. Grain yield averaged 6517 (Nov 4), 6339 (Dec 6), 6096(Jan 4), 5712 (Feb 1), 4962(Mar 1), and 3590(Apr 5). The late-flowering varieties performed relatively better at the earlier planting dates. Seeding rates of 160 and 240 lbs/A had no measureable effect on yield overall.
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In vivo and in vitro evaluation of the nutritive value of foragesTrei, John Earl, 1939- January 1963 (has links)
No description available.
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The botanical composition of steer diet on a semidesert rangeGalt, Henry Deloss, 1929- January 1966 (has links)
No description available.
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The effect of commercial fertilizers on forage production on a desert grassland siteHolt, Gary Allen, 1933- January 1959 (has links)
No description available.
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An investigation of white-tailed deer (Odocoileus virginianus couesi) forage relationships in the Chiricahua MountainsDay, Gerald I. January 1964 (has links)
No description available.
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Plant mechanisms contributing to acid impairment of nodulation of Medicago murex and Medicago sativa by Sinorhizobium medicae /Cheng, Yvonne. January 2003 (has links)
Thesis (Ph.D.)--Murdoch University, 2003. / Thesis submitted to the Division of Science and Engineering. Bibliography: leaves 153-180.
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Taxonomy and biology of Australasian solanaceae with additional studies of associated vegetation components /Symon, David, January 1995 (has links) (PDF)
Thesis (D. Sc.)--University of Adelaide, Dept. of Botany, 1996? / Includes bibliographical references.
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Evalutation [sic] of switchgrass and big bluestem for use in cool-season grazing systems to improve seasonal forage yield and livestock gainsHudson, Daniel John. January 2008 (has links)
Thesis (Ph.D.)--Michigan State University. Dept. of Crop and Soil Sciences, 2008. / Title from PDF t.p. (viewed on July 9, 2009) Includes bibliographical references. Also issued in print.
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Forage type effects on beef cattle performance and carcass traitsFrank, Abby Nicole, Kerth, Christopher R., January 2009 (has links)
Thesis--Auburn University, 2009. / Abstract. Vita. Includes bibliographical references (p. 40-51).
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