Research Pear Scab and Fabraea Leaf Spot. Examine your tree and see if one of these diseases may be what you have. Not knowing what type of pear tree, European or Asian, it is harder to decide what you may have.

First of all, yellowing and brown spots on the leaves of tomato plants can be a sign of different types of diseases, such as early blight, late blight, or septoria leaf spot. These diseases are usually caused by fungi that thrive in warm, humid environments and can spread rapidly in crowded, humid conditions. Based on your description, your tomato plants may be experiencing some type of fungal disease. Brown spots on the leaves, along with the white residue you mentioned, are common signs of fungal infection. Additionally, the presence of fruit flies on plants could also indicate fungal growth, as fruit flies are attracted to the sweet odor produced by fungi. To address the problem, it is important to take some steps to prevent further spread of the disease. First, you should remove all infected leaves and dispose of them in the trash, rather than composting them. This will prevent the spores from spreading to other plants. You may also consider applying a fungicide spray to the remaining leaves, especially if you see new spots appearing. As for leaf yellowing, this could be due to a variety of factors, including nutrient deficiencies, overwatering, or pests. You mentioned that your soil was low in nitrogen and phosphate, so applying organic fertilizer was a good next step. However, it can take a while for the plants to recover, as the yellowing can be the result of previous stressors. As for fruit flies, you may want to try some natural remedies, such as using sticky traps or applying a dish soap and water solution to the floor. These methods can help reduce the number of flies without the use of harmful chemicals. Finally, since you mentioned that you are a novice tomato gardener, it's always a good idea to do some research and educate yourself on common problems tomato plants can face. I would recommend visiting a website like https://thegardenplants.com/pests-diseases/leaf-problems/, which from what I've seen has quite a bit of information on leaf problems on various types of plants, although I don't think there is an article on tomatoes many of the solutions for these problems are useful regardless of the plant in question. I hope this information is useful to you and good luck with your tomato plants!

I don't know if that would cause the problem. But you should tell them no more herbicides or chemicals since you no longer have a lawn but an orchard with grass. The half life of that chemical in soil is 1.5 years and plants take it up through their roots... The trees could be having trouble for other reasons. The mulberry does not have iron deficiency, that first appears on new growth. That is probably magnesium deficiency. Are the roots healthy? The leaves look a little wilted to me, maybe it is overwatered? The fig looks stressed but not sure why. How have you been watering it and how long ago was it planted? Which region do you live in and what has the weather been like? Some more pics might help.

I have a fairly large pear tree that is losing an alarming number of leaves. They are developing brown spots, yellowing, and then dropping off the tree. It might be of no concern but I'd just like to get another opinion. (Yes I know there are a lot of water sprouts, the tree needed some heavy pruning last year) Thanks ahead!