| | - Manage the Alfalfa Weevil
The alfalfa weevil is an important insect pest of alfalfa in Nebraska. Management is essential to reduce crop losses, particularly during years when weevil infestation is high. Because there also are years when weevil damage is economically unimporta ...
http://www.ianrpubs.unl.edu/epublic/pages/publicationD.jsp?publicationId=55...
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- The Alfalfa Weevil
The alfalfa weevil is the most important insect pest of alfalfa in Colorado. The use of resistant varieties and timing of cutting can help manage moderate weevil problems. Beneficial insects and diseases can combine with good crop management practice ...
http://www.ext.colostate.edu/pubs/insect/05500.html
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- The Spotted Alfalfa Aphid
The spotted alfalfa aphid, Therioaphis maculata Buckton, was first found in the United States about 1953 and in Alberta in 1979. This species of aphid can be more serious on alfalfa than the pea aphid because it not only sucks out the juice but it al ...
http://www1.agric.gov.ab.ca/$Department/deptdocs.nsf/all/agdex728
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- The Alfalfa Leaf Diseases
Alfalfa is turning green early in this warmerthanusual spring and the frequent rains have promoted foliar diseases in parts of Iowa. Last week, ISU extension field specialistscrops Brian Lang northeast and Virgil Schmitt east reported spring black st ...
http://www.ipm.iastate.edu/ipm/icm/1998/5-4-1998/alfdis98.html
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- The Diseases of Alfalfa
Information on various diseases which may affect this crop with photographs of some, the life cycle of the causal agent, the symptoms and plant health management. ...
http://nu-distance.unl.edu/homer/disease/agron/alfalfa/
| | - The Fungal Diseases of Alfalfa
An identification guide to the fungal diseases that may infect this crop, with many photographs, brief descriptions of the symptoms and suggested management strategies. ...
http://www1.agric.gov.ab.ca/$Department/deptdocs.nsf/All/prm7897?OpenDocume...
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- The Alfalfa Insects
Last week I was scouting for alfalfa weevil larvae in a field near Ames and was reminded of the fact that alfalfa harbors a tremendous number of insects, some of which are pests but most are not. The first cutting of alfalfa is occurring in many fiel ...
http://www.ipm.iastate.edu/ipm/icm/2006/5-22/alfalfainsects.html
| | - The Nematodes
Information on the damage done by the stem nematode, Ditylenchus dipsaci, with photographs of infected plants. Significant damage occur in older stands but young seedlings may also be damaged primarily in irrigated areas. Stems swell and become disco ...
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/prm7899
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- Potato Leafhopper Management
The potato leafhopper is capable of causing serious damage to alfalfa in Nebraska. This insect overwinters in the Gulf States and migrates northward in the spring, usually in April or early May. During the summer months, several generations develop w ...
http://www.ianrpubs.unl.edu/epublic/pages/publicationD.jsp?publicationId=55...
| | - Bacterial Wilt
Photographs and information on how to identify this infection, caused by Corynebacterium insidiosum, and possible management strategies. Formerly a very destructive disease of alfalfa common in North America. Most cultivars bred in North America now ...
http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/prm7896?opendocume...
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