Calcium Based Foliar Spray/fertilizer

Question

While reading the article on calcium based foliar spray/fertilizer (link below) I wonder why one of the easiest method (Tums extra strength tablets – 750-1000mg calcium carbonate), or even simple milk, was not mentioned in the post. https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/calcium-fertilizer.htm

Answer 1

These are mentioned in our other articles.

https://www.gardeningknowhow.com/edible/vegetables/zucchini/zucchini-blossom-end-rot.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/milk-fertilizer.htm