{"id":1148,"date":"2017-06-28T17:12:36","date_gmt":"2017-06-28T17:12:36","guid":{"rendered":"http:\/\/agrilife.org\/sca\/?page_id=1148"},"modified":"2018-05-30T21:13:16","modified_gmt":"2018-05-30T21:13:16","slug":"banks-grass-mites","status":"publish","type":"page","link":"https:\/\/agrilife.org\/sca\/banks-grass-mites\/","title":{"rendered":"Banks Grass Mites and Two Spotted Spider Mites"},"content":{"rendered":"

According to the responses you entered, this is likely the pest you are dealing with. To confirm this, use the positive identification section.\u00a0There are two types of mites that are pests of sorghum, but both are similar and handled the same.<\/p>\n

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Banks grass mites and eggs on a leaf. Photo courtesy of Julie A. Peterson, University of Nebraska-Lincoln.<\/p><\/div>\n

Scientific Names<\/h2>\n

Oligonychus pratensis<\/em><\/p>\n

Biology<\/h2>\n

Eggs are laid by females on the underside of the leaf. The eggs are attached with webbing and look pearly white. The eggs are about 1\/4 the size of adults and hatch within 3-4 days. The entire life cycle can occur in as little as 11 days. Spider mites feed by sucking juices out of the leaves of the plant. They feed on the underside of the leaf. When feeding begins the leaf may turn yellow in color. \u00a0If the infestation is large enough it can lead to reddening of the top of the leaf and eventually browning. Large infestations normally occur after grain heads emerge.\u00a0These mites seem to prefer hot and dry conditions.<\/p>\n

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A banks grass mite adult and an egg. Photo by Jim Kalisch.<\/p><\/div>\n

Positive Identification<\/h2>\n
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Banks Grass Mites on Corn. As you can tell from the photo these organisms are very small. The small yellow dots are the mites. Photo courtesy of Julie A. Peterson, University of Nebraska-Lincoln.<\/p><\/div>\n

Mites are very small arachnids (under .5mm in length). For the Banks grass mite, after feeding the body turns a deep green color. The front legs and mouth part are a light salmon color. Two spotted spider mites have two distinct dark black spots on their body as shown in the image below. Both of these mites are very small and almost undetectable in small groups. The usage of a hand lens can assist in the identification of these pests. Heavily infested leaves have a dense coating of webbing on the underside.<\/p>\n

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A two spotted spider mite. Image permission details at bottom of page.<\/p><\/div>\n

Regional Information<\/h2>\n

These pests are more commonly found in the arid regions of Texas.<\/p>\n

Other Important Hosts<\/h2>\n

Wheat and other small grains.<\/p>\n

Scouting Tips<\/h2>\n

\u00a0<\/strong>Spider mites cause the most damage when sorghum is in the developmental stages. Scout for spider mites by looking for them on the underside of leaves. Colonies will normally occur starting at the midrib and then spread outwards from there. Use lower leaves for scouting purposes as these pests colonize from the bottom up. Webbing can also be used to detect spider mite presence. Mite presence will typically start on the edges of the field.<\/span><\/p>\n

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Banks grass mites. Photo by Jim Kalisch.<\/p><\/div>\n

 <\/p>\n

Although we tried to include the most significant pests related to sorghum our tool cannot help you identify every insect found on sorghum. This tool is built to inform you of the most common and significant pests of sorghum in Texas. If the insect you are dealing with does not match the description above then talk to your extension agent or visit this page<\/a> to look at all the different important potential pests of sorghum.\u00a0For management information<\/strong> of a specific pest talk to your local extension office.<\/p>\n

 <\/p>\n

Two Spotted Spider Mite By J. Holopainen \u00a0CC BY-SA 4.0-3.0-2.5-2.0-1.0 (http:\/\/creativecommons.org\/licenses\/by-sa\/4.0-3.0-2.5-2.0-1.0)], via Wikimedia Commons<\/p>\n","protected":false},"excerpt":{"rendered":"

According to the responses you entered, this is likely the pest you are dealing with. 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