Hi- here is the most current lab report on the Howard Co. compost:

https://www.howardcountymd.gov/LinkClick.aspx?fileticket=UM2yfUQBslg%3d&portalid=0

The 1.3% nitrogen content is consistent with other plant-based compost products. Poultry manure products will contain a higher percentage of nitrogen.

We suggest that you use the locally available compost to improve your soil structure and supplement the slow-release nutrients from the compost with organic fertilizers such as cottonseed meal and nitrate of soda.

Please view our web pages on fertilizers, organic matter, and fertilizing vegetables:

https://extension.umd.edu/hgic/soils/fertilizer

https://extension.umd.edu/hgic/topics/organic-matter-and-soil-amendments

https://extension.umd.edu/hgic/topics/fertilizing-vegetables

Jon

The cucumber issues look to me like downy mildew or powdery mildew. I have not done any kind of treatment on them yet.  



This looks like flea beetle injury to eggplant leaves. It is very unlikely that these plants will grow to full-size and produce a decent harvest. We suggest replacing them with healthy transplants and either protecting them with a row cover or spraying spinosad, neem, or pyrethrum every 7 days until bloom to control flea beetles.  https://extension.umd.edu/resource/flea-beetles-vegetables

Cucumber symptoms look like they were caused by environmental stress factors (the leaf edge burning looks like possible heat/drought stress). The plants should grow out of it if well cared for. Monitor the plants and send more photos if symptoms change or worsen. https://extension.umd.edu/resource/cucumbers

Marian

The insects and eggs on the underside of the tomato foliage looks like the eggs and nymphs of brown marmorated stinkbugs. The nymphs and adults are sucking insects that suck plant sap from leaves, fruit, buds or blossoms. Remove and destroy the egg masses and nymphs. Crush the egg masses and drop the nymphs into soapy water. Here is more on prevention and control https://extension.umd.edu/resource/stink-bugs-vegetables-and-fruits

Leaf spots - There are several common leaf spot diseases that tomatoes can be susceptible to such as early blight and septoria. This looks like septoria but management is the same for both. 

Keep the plants mulched to minimize soil splashing, water at the base and avoid wetting  foliage, prune off the lowest 3-4 leaf branches once plants are well established and starting to develop fruits, and remove infected leaves during the growing season and remove all infected plant parts at the end of the season. Here is more on septoria and early blight https://extension.umd.edu/resource/septoria-leaf-spot-tomatoes

https://extension.umd.edu/resource/early-blight-tomatoes

Marian