单项选择题

Idaho Department of Public Health
74 Eagle Boulevard, Boise, Idaho 83707
Telephone: (208) 544-2138 www.state.id/dph.us
Advisory on Blue Mountain Mite Infestation
Random tests conducted on potato fields by the Idaho State Agriculture Department have revealed the presence of the Blue Mountain mite in southern Idaho. Though short of a warning, we are advising all those living in those areas to be aware of the possible spread of these harmful arachnids.
The Blue Mountain mite inhabits sandy soil. In addition to causing damage to potato crops, this mite has been known to cause illness in humans. The Blue Mountain mite is nearly impossible to notice, especially as its light brown skin blends easily with that of the soil. It is mildly venomous. All those working in or near farms or handling agriculture products in the above-mentioned areas should take proper precautions. Where mite infestation is noticed, property owners should contact us by Internet or by our toll-free number: 1-800-544-MITE.
To: State Agricultural Officials
From: Varner Simmons
Subject: Possible Blue Mountain Mite Infestation
Date: 08:14 / August 13
Dear Sirs:
I think I may have Blue Mountain mite infestation on several hundred acres of my property here in Gooding. I’m a potato farmer, and I’ve noticed what I think are insect bites from time to time. However, I’ve never seen the insects. They leave a small hole with red dirt around it. I’m worried that this could be the Blue Mountain mite, but I’ve never been sick from them.
My crops have suffered an average amount of damage, but nothing out of the ordinary. Do you want me to prepare a few samples of my soil or potatoes, or will you do that yourselves Please contact me at home at 421-8001, or reply by e-mail. I’m awaiting your response. Thank you very much for your attention.
Why does Mr. Simmons think he may have Blue Mountain mite infestation