Infrastructure means the basic structure of an organization or system. A company's infrastructure would include all the fixed assets, i.e., the building, equipment, machinery and tools required to manufacture their product. Although people are not fixed assets they would be included in the company's infrastructure too.
Rarely a serious problem. Look-alikes: Jumping oak gall, tubakia leaf spot, oak leaf blister, other fungal leaf spots. Jumping oak gall Brown leaves appear on trees in the white oak group in late spring. Severe infections may cause the leaves to turn black, curl up and fall. On the underside are brown galls with the larva of a small wasp inside.
Walnut tree losing leaves. Suddenly 1/2 of my older walnut tree shed it's leaves this summer. It is isolated to one of the two main branches coming off the trunk. I've asked around and the only suggestion seems to be that it might be some kind of boring beetle. Does anyone have an idea as to why this is happening in June?