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.
1 Seal your tree's wounds with black spray paint to avoid oak wilt. 2  Although most species can be pruned from late June through October, be sure to check with your local arborist or nursery, or consult garden books or online sources, for the best time of year to prune your particular species of oak.arnings. 1  Trees that are let to grow without pruning can develop wounds from its branches and limbs rubbing against each other. 2  These wounds can attract insects that can damage the tree.