It will be foot tall in summer but I do mow now because it hasn'e been cold it's 3-4 inches tall and green
If it only gets a foot tall in the summer either one, deer are keeping it ate back, or two: your in need of adding nutrients/balancing PH. Both very important for healthy alfalfa.
Looking at just how much nutrients are removed on average can shed some light on just how important nutrients are with alfalfa. Makes no difference if harvested or consumed by deer for this. The following numbers are from AG PHD Nutrient removal tool for one acre of alfalfa with 1.5 ton removed, and in harvesting we would look for even more removed per acre in a healthy stand just to make this a little more realistic. P-18 lbs per acre, K-73.5 lbs per acre, and Ca-28.31 lbs per acre. This is the amount of nutrients removed from your soil.
I also know some say deer poop back in these areas so it really is not removed. Nutrients going in one end of an animal does not equal the amount of nutrient coming out the other end of an animal. Considering. In looking at chicken litter just as an example without testing, we use an average nutrient percentage content of 3-3-2. This means an average ton of poultry litter contains 60 pounds of nitrogen, 60 pounds of phosphate (P2O5) and 40 pounds of potash (K2O) per ton of litter. The amount of manure scattered by deer will be considerably less in “applied weight”.
Later on in the summer ours may only get about 1.5 to 2 foot tall but that is with regular cuttings (like once a month with dryer conditions on not great amended soil).
One can look at the stems and conclude they are being ate off but a cage may be a better way to visualize just how much deer are consuming.
Buck, not trying to argue your post, just felt I needed to add to it.
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