ash yellows造句

• Ash trees are suffering from the mysterious " ash yellows " or " ash dieback ."
• Ash yellows has been found to be present in the U . S . as well as some parts of Canada.
• There is no known way to cure ash yellows, so it is important to avoid growing ashes where ash yellows is prevalent.
• There is no known way to cure ash yellows, so it is important to avoid growing ashes where ash yellows is prevalent.
• Within the ash populations that were sampled, 50 % of the trees had crown die-back of 10 % or more caused by ash yellows.
• In one study, the ash yellows phytoplasma was discovered in 102 out of 106 ash populations that were sampled from six US states and three Canadian provinces.
• Ridley Scott and Tony Scott, executive producers for Numb3rs, designed the specifics of the Charlie-visions, such as the ash yellow color that appears on-screen when Charlie suddenly becomes inspired.
• I finally learned, for example, why my butternut trees are dying ( all butternuts are being exterminated by a canker that was first discovered in the 1970s ) and why my ash trees are dying, too ( the culprit here is a recently discovered disease called ash yellows ).
• Some management strategies include promoting species diversity to reduce plant stress and limit competition among the ash trees . One final control method is to use insecticide, however it is unclear if the use of insecticide to control leafhoppers is an effective way to prevent the spread of the phytoplasma that causes ash yellows.