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Browsing by Author "Lewis, Matthew A."

Now showing 1 - 16 of 16
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    Deep Tillage Prior to No-Till Corn: Research and Recommendations
    Thomason, Wade E.; Grisso, Robert D.; Balderson, T. Keith; Davis, Paul H.; Johnson, Sam; Lawrence, Chris; Lewis, Matthew A.; Moore, David M.; Alley, Marcus M. (Virginia Cooperative Extension, 2019-03-29)
    Compares cultivation of corn by no-till and deep tillage and notes ways to reduce soil compaction, using deep tillage if soil compaction has effected crop growth and yield.
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    Deep Tillage Prior to No-Till Corn: Research and Recommendations
    Thomason, Wade E.; Grisso, Robert D.; Balderson, T. Keith; Davis, Paul H.; Johnson, Sam; Lawrence, Chris; Lewis, Matthew A.; Moore, David M.; Alley, Marcus M. (Virginia Cooperative Extension, 2009)
    Compares cultivation of corn by no-till and deep tillage and notes ways to reduce soil compaction, using deep tillage if soil compaction has effected crop growth and yield.
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    Soil-Specific, Late-Season Nitrogen and Potassium Applications to Increase Corn Yields in the Mid-Atlantic Coastal Plain
    Lewis, Matthew A. (Virginia Tech, 2001-04-13)
    Corn grain yields can be limited by nitrogen (N) and potassium (K) availability on sandy coastal plain soils when soil moisture is adequate for high yields. This study evaluated irrigated corn grain yield response to late-season (just prior to tassel) N and K fertilizer applications, and enabled the proposal of a method to predict potential for corn to utilize late-season N applications based on soil moisture. In an experiment to evaluate late-season fertilizer application rates, N and K were applied in a complete factorial of five N and K rates ranging from 0 to 112 kg ha-1. Additionally, water use of high yielding corn was measured, and historical weather patterns evaluated in an effort to predict the need for late-season fertilizer applications based on soil moisture. Grain yield was increased significantly by late-season N applications in three of four experiments. Potassium applications did not affect yield, and there were no interactions between N and K. Significant drainage due to high rainfall levels in 2000 prohibited further refinement of corn water use data for Virginia climatic conditions. Historical weather patterns, potential evapotranspiration of corn, and soil water holding properties were evaluated. In order to provide corn with adequate moisture during a two-week moisture-sensitive critical period beginning at tassel, soils must be near field capacity at the start of the period and receive above-average (75th percentile) rainfall during the period.
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    Virginia On-Farm Corn Test Plots 2006
    Lewis, Matthew A.; Alexander, Wes; Burgess, Keith; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Dustin, Robyn; Henley, Philip; Johnson, Sam; Lawrence, Watson; Moore, David M.; Stafford, Carl; Thomason, Wade E. (Virginia Cooperative Extension, 2009-05-01)
    Discusses performance trials for commercial corn hybrids, including some genetically modified. Important concerns tested include selection of hybrid varieties, use of herbicides, fungicides and insecticides.
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    Virginia On-Farm Corn Test Plots, 2007
    Lewis, Matthew A.; Burgess, Keith; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Johnson, Sam; Lawrence, Watson; Moody, Spencer; Moore, David M.; Parrish, Michael J.; Thomason, Wade E.; Townsend, John (Virginia Cooperative Extension, 2008)
    Discusses test data for different cultivars and hybrids of corn, in terms of selection, fertilizer, use of fungicides, drought tolerance, weed removal, nematode control and other concerns.
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    Virginia On-Farm Corn Test Plots, 2008
    Lewis, Matthew A.; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Johnson, Sam; Lawrence, Watson; Moore, David M.; O'Berry, Nathan Brook; Parrish, Michael J.; Reiter, Scott; Thomason, Wade E. (Virginia Cooperative Extension, 2008)
    Discusses test data for different cultivars and hybrids of corn, in terms of selection, fertilizer, use of fungicides, drought tolerance, weed removal, nematode control and other concerns.
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    Virginia On-Farm Corn Test Plots, 2009
    Lewis, Matthew A.; Balderson, T. Keith; Bowen, Eric; Burgess, Keith; Chappell, Glenn F.; Clark, Bobby; Davis, Paul H.; Jochum, Eric; Johnson, Sam; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Reiter, Scott; Slade, Glenn; Wells, Kelvin; Thomason, Wade E. (Virginia Cooperative Extension, 2010)
    Discusses test data for different cultivars and hybrids of corn, in terms of selection, fertilizer, use of fungicides, drought tolerance, weed removal, nematode control and other concerns.
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    Virginia On-Farm Corn Test Plots, 2010
    Lewis, Matthew A.; Balderson, T. Keith; Bowen, Eric; Burgess, Keith; Chappell, Glenn F.; Davis, Stephen; Latané, Annah; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Slade, Glenn; Thomason, Wade E. (Virginia Cooperative Extension, 2010)
    Discusses data from 2010 corn test plots in Virginia, includes effects of the drought during the growing season. Provides information on crop yield, fertilizer use, problems with nematodes, slugs and other pests, and control.
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    Virginia On-Farm Soybean Test Plots, 2006
    Alexander, Wes; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Estienne, Cynthia Elizabeth; Johnson, Sam; Lewis, Matthew A.; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Slade, Glenn; Stafford, Carl; Wells, Kelvin; Lawrence, Chris; Holshouser, David L. (Virginia Cooperative Extension, 2006)
    Discusses data collected from soybean test plots in 2006 including variety selection, fungicides, maturity and development of plants, seed treatments, and tillage systems.
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    Virginia On-Farm Soybean Test Plots, 2007
    Alexander, Wes; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Estienne, Cynthia Elizabeth; Johnson, Sam; Lewis, Matthew A.; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Reiter, Scott; Slade, Glenn; Wells, Kelvin; Holshouser, David L. (Virginia Cooperative Extension, 2007)
    Discusses data collected from soybean test plots in 2007 including variety selection, fungicides, maturity and development of plants, seed treatments, and tillage systems.
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    Virginia On-Farm Soybean Test Plots, 2008
    Alexander, Wes; Balderson, T. Keith; Chappell, Glenn F.; Davis, Paul H.; Estienne, Cynthia Elizabeth; Johnson, Sam; Lewis, Matthew A.; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Reiter, Scott; Slade, Glenn; Wells, Kelvin; Holshouser, David L. (Virginia Cooperative Extension, 2008)
    Discusses data collected from soybean test plots in 2008 including variety selection, fungicides, maturity and development of plants, seed treatments, and tillage systems.
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    Virginia On-Farm Soybean Test Plots, 2009
    Balderson, T. Keith; Bradshaw, Rose; Chappell, Glenn F.; Clarke, Taylor; Davis, Paul H.; Estienne, Cynthia Elizabeth; Jochum, Eric; Johnson, Sam; Lewis, Matthew A.; Lawrence, Watson; Moore, David M.; Parrish, Michael J.; Reiter, Scott; Saphir, McGann; Holshouser, David L. (Virginia Cooperative Extension, 2010)
    Discusses data collected from soybean test plots in 2009 including variety selection, fungicides, maturity and development of plants, seed treatments, and tillage systems.
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    Virginia On-Farm Soybean Test Plots, 2010
    Balderson, T. Keith; Chappell, Glenn F.; Lawrence, Watson; Lewis, Matthew A.; Moore, David M.; Reiter, Scott; Slade, Glenn; Wells, Kelvin; Holshouser, David L. (Virginia Cooperative Extension, 2011)
    Discusses data from 2010 soybean test plots in Virginian, including soybean varieties, problems with nematodes, and factors such as soil type, tillage, planting date, equipment, fertilizer, use of herbicides and pesticides, and harvest date and equipment
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    Virginia Tech On-Farm Small Grain Test Plots - Eastern Virginia, August 2009: A Summary of Replicated Research and Demonstration Plots Conducted by Virginia Cooperative Extension in Cooperation with Local Producers and Agribusiness
    Balderson, T. Keith; Davis, Paul H.; Moore, David M.; Lewis, Matthew A.; Parrish, Michael J.; Estienne, Cynthia Elizabeth; Reiter, Scott; Thomason, Wade E. (Virginia Cooperative Extension, 2009)
    Discusses crop performance data for varieties of barley and wheat in Virginia, in terms of seeding, soil fertility, use of fertilizers, use of fungicides, herbicides and insecticides, and other factors.
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    Virginia Tech On-Farm Small Grain Test Plots: Eastern Virginia: August 2010
    Balderson, T. Keith; Moore, David M.; Lewis, Matthew A.; Lawrence, Watson; Reiter, Scott; Chappell, Glenn F.; Thomason, Wade E. (Virginia Cooperative Extension, 2010-08-19)
    Provides a summary of replicated research and demonstration plots conducted by the Virginia Cooperative Extension in cooperation with local producers and agribusinesses and funded by the Virginia Small Grains Board for the 2009 to 2010 small grain season.
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    Virginia Tech On-farm Wheat Test Plots. Eastern Virginia, August 2008
    Balderson, T. Keith; Davis, Paul H.; Moore, David M.; Lewis, Matthew A.; Lawrence, Watson; Parrish, Michael J.; Estienne, Cynthia Elizabeth; Alexander, Wes; Thomason, Wade E. (Virginia Cooperative Extension, 2008-08)
    A summary of replicated research and demonstration plots conducted by Virginia Cooperative Extension in cooperation with local producers and agribusinesses. Discusses crop performance data for varieties of wheat in Virginia, in terms of seeding, soil fertility, use of fertilizers, use of fungicides, herbicides, and insecticides, and other factors. Additionally includes data on soil fertility plots and foliar fungicide plots.