Squash Stem Splitting
I am growing squash and so many of my plants' stems are spittling at the base or an inch above. I don't think it is the squash borer, but I am not sure. I do not see anything in the vine, but it is yellowing and dry.
Certified GKH Gardening Expert
While stem split is common and usually due to extreme temperature changes and uneven watering, it never hurts to check for signs of pests, especially since they can penetrate the plant through these splits. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/vegetables/squash/squash-pests-identifying-and-preventing-squash-vine-borer.htm