This app was mentioned in 2 comments, with an average of 1.50 upvotes
https://play.google.com/store/apps/details?id=lt.noframe.fieldsareameasure
Like this app. but each field planting, fertilization, irrigation, medication information to save the areas should be. in addition, each field Photo to save important.
I have used Fields Area Measure. Link is to Android store.