My first question was so well handled by some great people that I thought I would pose another. Does a hay field get less productive as it ages? I ask this for a few reasons. One is that I can remember my father-in-law had the field redone about 25 years ago. After the first cutting a local farmer plowed the field and planted winter wheat. In the spring when he harvested the wheat that was considered his profit for his work. After the wheat was gone he planted a mixture of grasses and the following spring we again made hay. We lost one season of hay. After about 15 years or so we soil tested the field and fertilized the field and our yield went way up. We did the same every other year for about six years. We had the field treated with weed killer in August two years ago and it did an amazing job. We are starting to get some milkweed around the ground hog holes which we are always battling. We do not spread our horse manure on the hayfield rather we spread it out in our rather large pasture and woods. We do not allow any grazing on the field. So back to the question. . . do we need to redo the field from scratch? Are we taking proper care of the field by fertilizing and using broad leaf weed killer from time to time?