Maple tree disease or insect?

Question: Our maple tree leaves look like all of the chlorophyll has been sucked out of them.  It does appear that a insect ate a hole in the leaf as well.  Several of our trees have this issue.  I'm attaching a photo.  Please advise what it is and how to treat.  Thank you!

responder: Ask Extension Question Wrangler Pronouns: she/her/hers  Find your local Extension office here: https://www.canr.msu.edu/outreach/county  Find an expert in a specific topic here: https://www.canr.msu.edu/outreach/experts/experts-by-topic-area   Find home gardening information here: https://www.canr.msu.edu/home_gardening/  Order a soil test kit here: https://www.canr.msu.edu/news/soil-testing-returns-through-msu-extension   Mold questions? We don’t have an expert in mold, but we do have a few resources below or contact the  Michigan health department. Molds in the Home  Indoor Air Quality May be Hazardous to Your Health    Mushroom questions? We can’t identify, but we do have these three resources to help you: Identifying  Morel  Poisonous  MSU is an affirmative-action, equal-opportunity employer. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Michigan State University occupies the ancestral, traditional and contemporary lands of the Anishinaabeg, Three Fires Confederacy of Ojibwe, Odawa and Potawatomi peoples. The University resides on the land ceded in the 1819 Treaty of Saginaw.     Replied May 07, 2023, 1:32 PM EDT
response: Good afternoon and thank you for reaching out. Would it be possible for you to attach a photo of the entire tree as well? Can use the drop files for your prompt. Let me know if that’s possible. Thanks

responder: The Question Asker Replied May 08, 2023, 7:01 AM EDT
response: I've attached 5 photos that I hope are helpful in determining what is happening to our maple tree.  Thank you! IMG_2031 (2).JPG On Sun, May 7, 2023 at 1:32 PM Ask Extension <<personal data hidden>> wrote:

responder: An Ask Extension Expert Replied May 08, 2023, 12:15 PM EDT
response: The leaf browning in your maple does not appear to be a disease but the result of late season freeze/frost at the bud stage, often combined with lack of water. Leaves often do not look very green when they first emerge from the bud stage. Probably the leaf browning will not continue to occur once our warmer weather is here to stay.   Regarding your concern about the leaves looking like they lack chlorophyll. This is a situation that is called chlorosis, which is basically iron deficiency in the soil. Iron deficiency in your soil does not necessarily mean that your soil is lacking in iron, but it means that there may be too much or too little of other nutrients that are preventing your tree from uptaking available iron.  Chlorosis can be caused by a single issue such as a nutrient deficiency (usually iron), but it also could be due to multiple factors influencing the health of the plant. Drought, over watering, compacted soils, limited planting areas, and poorly drained soils can impact a plant’s vulnerability to chlorosis. Soil pH can influence leaf chlorosis because it has a significant role in a plant’s ability to uptake available nutrients.  Iron chlorosis is a common nutrient deficiency in our area and is due to a high soil pH. This makes it difficult for some trees (many maples) to acquire enough iron from the soil.   If your leaves still don't look as green as they should when they are fully developed, I recommend you conduct a soil test to ascertain if your soil is lacking in needed nutrients. Self-mailer soil test kits from the Michigan State University Plant and Pest Diagnostic Lab are available. You can obtain them at the link below. Full instructions are there and also come with the kits. The Lab will make recommendations for any needed soil amendments. The cure could be as simple as applying fertilizer or an amendment that would lower your soil pH level. Be sure to tell them that a mature maple tree is located in the area being tested.   The mailer can be purchased in person at your nearest MSU Extension offices or online from the MSU Extension bookstore (shop.msu.edu). The cost is $26. Further information can be found in the link below:  https://www.canr.msu.edu/news/soil-testing-returns-through-msu-extension  The link below will tell you more about iron chlorosis.  https://www.canr.msu.edu/resources/chlorosis  And, by the way, you mentioned holes in the leaves. This is very common and could be caused by caterpillars or other insects chewing. Examine your leaves for any sign of insects and let us know if you find a lot of them. A small number is common.

responder: The Question Asker Replied May 08, 2023, 12:36 PM EDT
response: Thank you for your help!  We'll continue to monitor. On Mon, May 8, 2023 at 12:15 PM Ask Extension <<personal data hidden>> wrote:

responder: An Ask Extension Expert Replied May 08, 2023, 12:45 PM EDT
response: My pleasure. Often times odd things like the leaf browning show up early in the season and are no cause for alarm.

responder: The Question Asker Replied May 08, 2023, 6:25 PM EDT
response: Good to hear, thank you! On Mon, May 8, 2023 at 12:46 PM Ask Extension <<personal data hidden>> wrote: