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.
The most reliable distinction is in the inner surface of the acorn shell. White oaks are glabrous(hairless) and red oaks are tomentose(hairy). 2. White oak acorns require one season to mature, whereas red oak acorn require two seasons. 3. White oak acorn initiate germination in autumn, whereas red oak acorn usually do not germinate until next spring. 4. Red oak acorn has a higher tannin content rather than white oak acorn. but there are intermediate group between white oak and red oak. Which oak drops acorns first? here in lowcountry of south carolina, water oaks drop first. right around the beginning of september.