Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
My wife Marilyn and I are relatively new to the "cover crop" procedure, although we have on two separate occasions planted cow pea into newly constructed raised beds. On the first occasion we turned the plants into the soil before planting our vegetable crop. I was about to turn in the second crop when I discovered this book. The crop has matured and I have harvested the peas for the next new garden. We are inthusiastic and will continue to read your books.