Search Results - "Clayton, George W."

Nitrogen Economy of Pulse Crop Production in the Northern Great Plains [Erratum: 2008 Jan-Feb, v. 100, issue 1, p. 235.] by Walley, F.L, Clayton, G.W, Miller, P.R, Carr, P.M, Lafond, G.P

“…Previously published data were used to examine the N economy of pulse crops typically grown on the Northern Great Plains with the goal of assessing the…”
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Cattle Manure Amendments Can Increase the pH of Acid Soils by Whalen, Joann K., Chang, Chi, Clayton, George W., Carefoot, Janna P.

“…Crop production on acid soils can be improved greatly by adjusting the pH to near neutrality. While soil acidity is commonly corrected by liming, there is…”
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Wild Oat (Avena Fatua) vs. Redstem Filaree (Erodium Cicutarium) Interference in Dry Pea by Harker, K Neil, Blackshaw, Robert E, Clayton, George W

“…Dry peas (pea) usually require early and effective weed management for optimum yields. However, it is not always possible to control all weeds with a single…”
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Comparison of a Glyphosate-Resistant Canola (Brassica napus L.) System with Traditional Herbicide Regimes by O'DONOVAN, John T, HARKER, K. Neil, CLAYTON, George W, BLACKSHAW, Robert E

“…Herbicide-resistant cultivars account for over 90% of the canola grown in western Canada and cultivars resistant to glyphosate dominate the market. Field…”
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Wheat Seeding Rate Influences Herbicide Performance in Wild Oat (Avena fatua L.) by O'Donovan, J.T, Blackshaw, R.E, Harker, K.N, Clayton, G.W

“…Field experiments were conducted at three locations in Alberta for 3 yr to determine if spring wheat (Triticum aestivum L.) seeding rate (75 and 150 kg ha-1)…”
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Broadleaf herbicide effects on clethodim and quizalofop-P efficacy on volunteer wheat (Triticum aestivum) by Blackshaw, R.E, Harker, K.N, Clayton, G.W, O'Donovan, J.T

“…Field experiments were conducted at three locations in 2003 and 2004 to examine clethodim and quizalofop-P efficacy on spring wheat seedlings when applied…”
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Relating Crop Productivity to Soil Microbial Properties in Acid Soil Treated with Cattle Manure by Lupwayi, Newton Z., Benke, Mônica B., Hao, Xiying, O'Donovan, John T., Clayton, George W.

“…Cattle (Bos taurus) manure can be used to correct soil acidity, supply plant nutrients, and increase soil organic matter. It usually affects soil microbial…”
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Soil Microbial Response to Nitrogen Rate and Placement and Barley Seeding Rate under No Till by Lupwayi, Newton Z, Clayton, George W, O'Donovan, John T, Grant, Cynthia A

“…Urea [(NH2)2CO] applied in the seed row can damage seedlings and affect soil microorganisms. A field study was conducted in five site-years to compare the…”
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Contrasting soil microbial responses to fertilizers and herbicides in a canola–barley rotation by Lupwayi, Newton Z., Brandt, Stewart A., Harker, K. Neil, O’Donovan, John T., Clayton, George W., Turkington, T. Kelly

“…The combination of high input costs and low commodity prices is forcing some farmers to consider reducing crop inputs like seed, fertilizer and herbicides. In…”
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Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains by Beres, Brian L, Harker, K. Neil, Clayton, George W, Bremer, Eric, Blackshaw, Robert E, Graf, Robert J

“…The inclusion of winter cereals in spring-annual rotations in the northern Great Plains may reduce weed populations and herbicide requirements. A broad range…”
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Crop seeding rate influences the performance of variable herbicide rates in a canola-barley-canola rotation by O'Donovan, J.T, Newman, J.C, Harker, K.N, Clayton, G.W

“…Glyphosate-resistant canola was seeded at Vegreville, Alberta, in 1997 and 1999 and barley in rotation with the canola in 1998 at three seeding rates. The…”
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Effects of seeding rate, nitrogen rate and cultivar on barley malt quality by Edney, Michael J, O'Donovan, John T, Turkington, T Kelly, Clayton, George W, McKenzie, Ross, Juskiw, Pat, Lafond, Guy P, Brandt, Stewart, Grant, Cynthia A, Harker, K Neil, Johnson, Eric, May, William

“…BACKGROUND: Crop management tools have been shown to affect barley kernel size and grain protein content, but the direct effect on malt quality is not well…”
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Nitrous Oxide Emissions in Response to ESN and Urea Application in a No-Till Barley Cropping System by Li, Chunli, Hao, Xiying, Blackshaw, Robert E., Clayton, George W., O'Donovan, John T., Harker, K. Neil

“…We investigated the effect of environmentally smart nitrogen (ESN) fertilizer on nitrous oxide (N 2 O) emissions under no-till barley (Hordeum vulgare L.)…”
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Integrating Cropping Systems with Cultural Techniques Augments Wild Oat (Avena fatua) Management in Barley by Harker, K. Neil, O'Donovan, John T., Irvine, R. Byron, Turkington, T. Kelly, Clayton, George W.

“…Wild oat causes more crop yield losses and accounts for more herbicide expenditures than any other weed species on the Canadian Prairies. A study was conducted…”
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Soil microbial community response to controlled-release urea fertilizer under zero tillage and conventional tillage by Lupwayi, Newton Z., Grant, Cynthia A., Soon, Yoong K., Clayton, George W., Bittman, Shabtai, Malhi, Sukhdev S., Zebarth, Bernie J.

“…Soil microorganisms mediate many important biological processes for sustainable agriculture. The effect of a polymer-coated controlled-release urea (CRU, ESN…”
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Sustainable Management Package to Improve Winter Wheat Production and Competition with Weeds by Beres, Brian L, Clayton, George W, Harker, K. Neil, Stevenson, F. Craig, Blackshaw, Robert E, Graf, Robert J

“…Advances in cultivar development and the demand for winter wheat (Triticum aestivum L.) as an ethanol feedstock has increased winter wheat acreage across the…”
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Volunteer Barley Interference in Spring Wheat Grown in a Zero-Tillage System by O'Donovan, John T, Neil Harker, K, Clayton, George W, Hall, Linda M, Cathcart, Jason, Sapsford, Kenneth L, (Rick) Holm, F. A, Hacault, Kristin

“…There is no published information on the impact of volunteer barley on wheat yield loss or on the economics of controlling barley with a herbicide. With the…”
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Combining Cultural Practices with Herbicides Reduces Wild Oat (Avena fatua) Seed in the Soil Seed Bank and Improves Barley Yield by O'Donovan, John T., Harker, K. Neil, Turkington, T. Kelly, Clayton, George W.

“…A study was initiated in 2001at four locations in western Canada to investigate an integrated approach to managing wild oat, the region's worst weed. The study…”
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Nitrous oxide emissions in response to ESN and urea, herbicide management and canola cultivar in a no-till cropping system by Li, Chunli, Hao, Xiying, Blackshaw, Robert E., O’Donovan, John T., Harker, K. Neil, Clayton, George W.

“…► N 2O emissions were measured at three sites over three years in a no-till canola cropping system. ► Emission rates were generally lower than the default…”
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Environmental Effects on the Relative Competitive Ability of Canola and Small-Grain Cereals in a Direct-Seeded System by Harker, K. Neil, O'Donovan, John T, Blackshaw, Robert E, Johnson, Eric N, Holm, Frederick A, Clayton, George W

“…Growing crops that exhibit a high level of competition with weeds increases opportunities to practice integrated weed management and reduce herbicide inputs…”
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