Soybean (Missouri)
Coordinated by Moneen Jones (jonesmon@missouri.edu), Assistant Professor, 
Division of Plant Sciences, University of Missouri

Background

Missouri was ranked as the fourth largest producer of soybeans in the U.S. in 2013. Missouri harvested approximately 5.6 million acres of soybeans and exported or sold soybeans worth $2.521 billion dollars statewide. The eight counties (Dunklin, Pemiscot, Mississippi, New Madrid, Scott, Stoddard, Butler, and Cape Girardeau) of southeast Missouri produced a range in average yield of 26.8 to 40.7 million bushels each of soybeans per county in 2010 with a value of between $301 M and $472M.

 
Soybean field
Soybean (Glycine max L.) 
Howard F. Schwarz, Colorado State University, 
Bugwood.org

Objective

To avoid pest-related yield loss, growers and other stakeholders in crop production need timely and geographically relevant information. This information can be in the form of weather observations and forecasts, crop conditions, pest alerts and management guidelines. An information technology (IT) platform utilizes computers, communication equipment and mobile devices, along with software tools and applications so that a grower can access data and other forms of information in an easy and timely manner for field-level decision making. It allows all agricultural stakeholders to share data and contribute to the generation of products that promote integrated pest management (IPM) and ensure national food security.


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Pests of Concern


The southeast region of Missouri is considered to be the most at risk area of the state for each of these pests. The Silver Y moth is capable of defoliating from 25 to 60% of the leaves on a soybean plant. At 60% it would be enough to destroy the crop. Four percent (19) of the port interceptions of this species have been in Memphis, TN. The effect of the Egyptian cottonworm moth on soybeans is not known, but it can reduce cotton yields as much as 75%. Almost any crop plant, from soybeans to corn to· cotton and melons may be destroyed by the cucurbit beetle, Diabrotica speciosa. It is also capable of transmitting a number of important viruses to crops. The kudzu bug can reduce soybean yields by up to 4 7%.

With its connections to the southern coastal plain, the region also serves as a natural pathway for the introduction of southern exotic and invasive pests into Missouri, such as soybean rust and potentially the kudzu bug and others. The western soybean cutworm, which was not previously known to occur in southeast Missouri was found this year. Estimates of the amount of damage which it might cause have not yet been assessed in the region. Other potential pests such as the kudzu bug/bean plataspid have been found in counties in Tennessee which are adjacent to the boot heel and seem poised to enter the state. Losses up to 4 7% if left untreated have been noted for some areas (Anonymous, 2013). The sugarcane aphid, which was originally detected in Texas has now also been found in Arkansas and is spreading rapidly. It was just recently discovered in southeast Missouri in August 2014. Many of the pests which are CAPS targets /federal pests of concern have not been surveyed for in Missouri.

Silver Y moth
Silver Y Moth, (Autographa gamma, L.)
Julieta Brambila, USDA APHIS PPQ, Bugwood.org