Resources by David Holshouser

Title Available As Summary Date ID Author
Palmer amaranth (Amaranthus palmeri) Control in Soybeans Mar 20, 2020 2808-1006 (SPES-194NP)
Soybean Rust Incidence and the Response of Soybeans to Fungicides in 2009 Dec 21, 2010 3012-1520
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
Identifying Soybean Fields at Risk to Leaf-Feeding Insects Nov 13, 2018 444-203 (SPES-74P)
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)
Predicting Soybean Reproductive Stages in Virginia Oct 7, 2017 CSES-197P
Virginia Soybean Performance Tests 2019 Feb 12, 2020 SPES-191NP
Biofortification: Creating a Healthier Food Supply Nov 23, 2020 SPES-267P
2021 Virginia On-Farm Soybean Research Jan 28, 2022 SPES-377NP