That looks like Blossom End Rot of tomatoes that has also been attacked by a secondary fungus. This will be caused by a lack of calcium which can be from acidic soils as well.
I would check your soil nutrients and pH, and apply a fungicide, as well.
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossom-rot.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm
My tomatoes are ripening but as they start to ripen they get large black spots on them. What is causing this to happen?
This resembles an Anthracnose fungal infection. This can be difficult to remove and treat, but it is not impossible. Here is an article that will offer more information:
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-anthracnose-treatment.htm
This will help you with growing tomatoes:
https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm
What types of chemicals to use since the day planted
This article should help. When it says a balanced fertilizer, it means the same number for nitrogen, phosphorus, and potassium, like 10-10-10. You can use Neem oil to combat pests such as aphids.
https://www.gardeningknowhow.com/edible/vegetables/tree-tomato/grow-tree-tomato-tamarillo.htm
How to cross breed tomato plants
This article should help:
https://www.gardeningknowhow.com/edible/vegetables/tomato/pollinate-tomatoes.htm
what can I do the soil to fertilize or something in Fall and Spring?
You could plant a nitrogen-fixing cover plant in the fall, then till it under in spring. That would help replenish some of the lost nutrients. Not rotating crops can increase the likelihood of repeat diseases and pests, so you would need to be on the lookout for those and head them off at the first sign.
https://www.gardeningknowhow.com/edible/vegetables/vgen/rotating-vegetables.htm
https://www.gardeningknowhow.com/edible/grains/cover-crops/cover-crop-planting-guide.htm
After a couple years, you may want to plant determinate tomatoes that will finish early. Then cover the soil with clear plastic and let it sit for 8 weeks to solarize the pests and disease.
I read that it could be lack of water or because of lots of it in the soil, but of course I am not sure. The images I am enclosing are for the same leaf, a front and back shot.
It could be a bacterial disease or early blight. These articles should help:
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-disease-video.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-seedling-problems.htm
Will roots develop from the branch in the water container for transplant
Hello there!
In short, yes. There are a few things to note, however. This plant is flowering. Flowering hormones can inhibit rooting and hormone. You can get around this by using auxin as rooting hormone, which will make it faster, or by using something to keep microbes away, such as honey.
With that being said- Plants, such as tomatoes, will root themselves quite easily.
https://www.gardeningknowhow.com/edible/vegetables/tomato/starting-tomato-cuttings.htm
This page contains other articles that will help:
https://www.gardeningknowhow.com/search?searchTerm=%22tomato%22