Resources by David Holshouser

Title Available As Summary Date ID Author
Prevention and Control of Palmer Amaranth in Cotton
Palmer amaranth (Amaranthus palmeri), a member of the "pigweed" family, is one of the most troublesome weeds in many southern row crops. Seed can germinate all season and plants can grow to over 6 feet in height. Plants have either male flowers that shed pollen or female flowers that can produce up to 600,000 seed per plant. One Palmer amaranth per 30 foot of row can reduce cotton yield by 6 to 12%.
Mar 25, 2015 2805-1001 (PPWS-60NP)
Palmer amaranth (Amaranthus palmeri) Control in Soybeans Jul 22, 2019 2808-1006 (SPES-155NP)
Soybean Rust Incidence and the Response of Soybeans to Fungicides in 2008 Nov 19, 2009 2911-1420
Green Stem Syndrome in Soybean Dec 22, 2009 2912-1430
Suggested Soybean Seeding Rates for Virginia Jun 11, 2010 3006-1447
Days to Soybean Physiological Maturity Sep 9, 2010 3009-1459
Soybean Rust Incidence and the Response of Soybeans to Fungicides in 2009 Dec 21, 2010 3012-1520
2009-2010 Performance of Sorghum Hybrids in the Virginia‐Carolina Region Jan 25, 2011 3101-1531
Soybean Choices and Challenges for Your Family May 1, 2009 348-040
Tips for Profitable Variety Selection: How to Use Data From Different Types of Variety Trials Mar 29, 2019 424-040
Agronomy Handbook, 2000 May 1, 2009 424-100
Planter/Drill Considerations for Conservation Tillage Systems
No-till planters and drills must be able to cut and handle residue, penetrate the soil to the proper seeding depth, and establish good seed-to-soil contact. Many different soil conditions can be present in the Mid-Atlantic region at planting time. Moist soils covered with residue, which may also be wet, can dominate during the late fall and early spring and, occasionally, in the summer. Although this condition provides an ideal environment for seed germination, it can make it difficult to cut through the residue. In contrast, hard and dry conditions may also prevail. Although cutting residue is easier during dry conditions, it is more difficult to penetrate the hard, dry soils. Proper timing, equipment selection and adjustments, and crop management can overcome these difficult issues.
Aug 8, 2014 442-457 (BSE-147P)
Identifying Soybean Fields at Risk to Leaf-Feeding Insects Nov 13, 2018 444-203 (SPES-74P)
Asian Soybean Rust - Frequently Asked Questions II: Identification, Biology, and Ecology May 1, 2009 450-302
Asian Soybean Rust - Frequently Asked Questions III: Control with Fungicides May 1, 2009 450-303
Soybean Disease Control: Response of Soybeans to Foliar Sprays of Fungicides in 2005 May 1, 2009 450-561
Soybean Rust Incidence and the Response of Soybeans to Foliar Fungicides in 2006
The spread of soybean rust northward through states along the Atlantic Coast began on soybeans in Alabama, Georgia, and Florida. The disease was first reported in South Carolina on 21 August, North Carolina on 14 September, and Virginia on 9 October. The epidemic of 2006 was far reaching in that disease outbreaks occurred on soybeans as far north as Illinois and Indiana and east to Virginia
May 1, 2009 450-562
Virginia On-Farm Soybean Test Plots 2016
These demonstration and research plot results are a collaborative effort of Virginia Cooperative Extension (VCE) Agents and Specialists, area producers, and agribusiness. The purpose of this publication is to provide research-based information to aid in the decision-making process for soybean producers in Virginia. It provides an unbiased evaluation of varieties, management practices, and new technologies through on-farm replicated research using producer equipment and time. These experiments enable producers to make better management decisions based on research and provide greater opportunities to improve yields and profits, which improves quality of life for them and their families.
Jan 13, 2017 ANR-244NP
Virginia Soybean Performance Tests 2015
The purpose of this publication is to provide performance data of the many soybean varieties offered for sale in Virginia. These data should be of benefit to producers and agribusinesses in making selections of varieties for their use. It is realized that not all varieties that are offered for sale in Virginia are included in these tests. There is no implication that varieties not included are inferior in any way, but only that they have not been tested.
Feb 19, 2016 AREC-170NP
Virginia Soybean Performance Test 2016 Mar 29, 2017 AREC-209NP
Troubleshooting The Soybean Crop Nov 16, 2012 AREC-25NP
Soybean Reproductive Development Stages
Remove the soybean plant at ground level to make it easier to stage. Examine each main stem node one at a time to determine the development stage. Focus on the top four nodes that contain fully developed leaves (shown below). A fully developed leaf is one that is located immediately below a node containing a leaf with unrolled or unfolded leaflets (leaflet edges are no longer touching). The soybean crop is considered to be at a particular stage when 50% of the plants reach that stage. Listed with stage description for R1 through R6 are the approximate number of days to R7, or physiological maturity, for full season (FS) soybean planted in May and double crop (DC) soybean planted in June/July.
Jul 25, 2019 AREC-59NP (SPES-156NP)
Double Cropping Soybeans In Virginia
Double cropping is simply growing and harvesting two crops in one year. In the mid-Atlantic region of the United States, soybeans are commonly double-cropped after a winter small-grain crop, usually wheat. However, double cropping is not limited to the small-grain-soybean system. Other crops, such as grain sorghum or even corn, could fit into a double-cropping system with small grains. Soybean can be grown after other winter crops, such as canola, or after a spring crop, such as snap beans. As long as both crops can complete their development in time to allow profitable production of the entire system, numerous double-cropping systems are possible.
Mar 11, 2015 CSES-102NP (CSES-104NP)
Roadside Survey of Continuous No-till and Cover Crop Acres in Virginia
In 2009, the Chesapeake Clean Water Ecosystem Restoration Act (HB 3852/S 1816) was passed, and was intended to strengthen certain standards for the Chesapeake Bay, particularly, to address nonpoint source pollution. Nonpoint source pollution includes that of urban, suburban and agricultural runoff. Cited in the bill was the need to establish and codify the Bay-wide pollution budget, or Total Maximum Daily Loads, (TMDL) for nitrogen, phosphorous and sediment that EPA was in process of developing for the Bay. Hence all states and their perspective watersheds would have pollution caps for all sources of pollution.
Oct 13, 2014 CSES-103NP
The Nutrient Value of Straw
The mature and dried stem, leaves, and chaff remaining after barley and wheat are harvested is known as straw. Many farmers around Virginia harvest straw by baling in small bales, large round bales, or large square bales that range in weight from 40 to 1,000 lbs. plus per bale.
Jun 19, 2015 CSES-126NP
Soybean Growth and Development
Proper management of the soybean crop requires knowledge of how environmental conditions and pests affect growth during vegetative and reproductive stages. For example, too little or too much soil moisture at certain stages may hinder growth and lower yield, and insect pests may damage the crop at one stage but not another. The information below can help you determine the proper timing of various management practices.
Nov 13, 2015 CSES-134NP
Predicting Soybean Reproductive Stages in Virginia Oct 7, 2017 CSES-197P
Virginia Soybean Performance Tests 2017 Mar 23, 2018 CSES-232NP
2017 Virginia On-Farm Soybean Test Plots Jan 4, 2018 CSES-223NP
Virginia Soybean Performance Tests 2018 May 14, 2019 SPES-118 (SPES-130NP)
2018 Virginia On-Farm Soybean Research Jan 16, 2019 SPES-96NP