| http://www.w3.org/ns/prov#value | - They add that without proper and effective control, weevil populations are likely to cause a huge or complete loss of sweet potato production.Crop damage can range from 30 to 40 percent in the U.S. to 60 or 70 percent in Guam, to 70 to 100 percent in some African countries, such as Uganda and Nigeria, Reddy says.???Consequently, there is an urgent need for development of eco-friendly control metho
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