We investigated garden tree disease in Qiqihar city, and found that there were 94 diseases altogether, This provides scientific basis for tree disease control.

对园林树木病害进行了系统调查，查清我市园林树木病害94种，为园林树木病害防治提供科学依据。

youdao

If the area is too wet, harmful organisms have a better chance to invade the tree and cause disease.

如果该区域过分潮湿，有害的微生物更有可能入侵树木，造成疾病。

youdao

A tree can take 25 years to die if disease gets into the roots or wounds in the bark.

如果病菌侵入它们的根或者伤害了它们的树皮，一棵树在死亡之前还可以挺25年。

youdao

The Forestry Commission announced on Monday that the tree disease chalara had been found in woodland in Kent and Essex.

BBC: Ash dieback chalara cases confirmed in Essex

"It's quite galling for us to have to do all this because basically yet again the government has missed the boat on a serious outbreak of tree disease, " he said.

BBC: Essex

It doesn't seem to be affected all that much by climate, soil conditions, geographical location, growth rate, tree size or disease.

NPR: Excerpt: 'A Splintered History Of Wood'