What do tomatoes do if they have too much nitrogen?

Question

My tomatoes have plenty of water and no bugs or disease, but the tops of them are yellow. We mixed Chicken poop with the soil. Could that cause them to turn yellow?

Answer 1

There are a number of reasons for leaf yellowing in tomatoes. This article should help with pinpointing and correcting the cause of yours: https://www.gardeningknowhow.com/edible/vegetables/tomato/yellow-tomato-leaves.htm