What is the most popular contaminate that encounters tomatoes?
Here is a link that will help you.
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-diseases.htm
How much water do they need? Do I soak completely every day, skip days, try to not use very much water daily?
They generally need watering every day, especially while fruiting. If the temps rise above 85 F, they should be watered twice a day. Allow the water to run through the container.
Is it safe to eat tomatoes affected by bacterial canker?
No, they tomatoes are considered not safe for consumption.
Do not compost the diseased plants or fruit.
Here are some links for you.
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-plant-problems.htm
http://vegetablemdonline.ppath.cornell.edu/factsheets/Tomato_Bacterial.htm
My tomatoes start to turn to ripen but drop off the plant, leaves are curling. Tomatoes fall off about the time they turn white and the leaves are curling and droop.
How is the weather? You may need to increase watering. Tomatoes will "abort" fruit if they do not get enough water. Additionally, the leaves will curl and plants may droop or wilt when too hot or in need of water. If temps are fairly warm where you are, like 85F or above, then you should water twice a day. You can always pick the near-ripe tomatoes and allow them to finish ripening indoors.
My tomato plants have yellow flowers, but now a fuzzy spot is growing on them. What should I do? My garden has been doing fine. It gets watered every day and has yellow flowers on the leaves now. However, just this week I discovered the fuzzy spots in between the leaves. I hope it isn't a fungus of some sort. HELP!!!
Sometimes the stems of the tomatoes do look fuzzy, hair almost.
Inspect the plants carefully, turn over leaves and look for insects or bugs. They may lay eggs.
If you see anything treat with Neem OIl.
If you try to remove the fuzzy area does it come off? Do you see this fuzzy spot on other areas of the plant?
This can help you determine if it's plant appearance or an issue to address.
I'm including a few links that may help you identify possible insects or fungus.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-diseases.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tips-for-growing-tomatoes.htm
What can I use on my tomato plant that has tomatoes that have black spots on the bottom of them as they grow? My dad called it "bud rot" or something like that.
This is blossom end rot.This article will help you with blossom end rot:
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossom-rot.htm
From what I have read so far, my tomato plants may have tomato virus. The growing tips are curling upward, purple on the outside and seemingly stunted. I understand I have to remove the affected plants. Now, will I be able to plant tomatoes in the same spot right away, or how do I take care of this problem for the future?
It is best not to replant them in the same place for at least a year or so. This disease, as with others, persist in the soil and will reinfect tomato plants if they are repeatedly planted there. Pant your tomatoes elsewhere or in a container for now. If space is limited, however, you can try solarizing the garden soil This article will help with that: https://www.gardeningknowhow.com/garden-how-to/projects/how-to-solarize-garden-beds-to-eliminate-garden-pests-in-the-soil.htm