broad beans

Question

What fertilizer to use in growing period?

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Answer 1

Broad Beans are light feeders and really do not need any fertilizer added to their soil.
If you feel you need to fertilize use something with a low Nitrogen number as the Broad Beans make their own Nitrogen.

https://www.gardeningknowhow.com/edible/vegetables/beans/growing-fava-beans.htm