from English Grammar Today. Efficient and effective are adjectives. We use efficient to describe something or someone that works in a quick and organised way: The new online banking system offers a convenient and efficient way to check your account. [extract from a reference for someone applying for a job]
Main Disease. Oak wilt is caused by the fungus Ceratocystis fagacearum which develops in the outer sapwood of the tree. The infected tree reacts by developing tyloses and gums which subsequently restrict the flow of water and nutrients in affected vascular tissues with the result that the tree wilts and subsequently dies (French & Stienstra, 1980). Host Range.
Oak trees pruned during the growing season are at greater risk of infection. According to experts at Michigan State University Extension, the normal time-tested advice to prevent oak wilt is to not prune oaks after April 1, otherwise you risk injuring oaks. While risk of infection decreases after mid-July, itâs prudent to avoid pruning any type of injury of these majestic trees until November.