Basically this is a math problem. What is the cost of mowing (brush hogging) a pasture vs the benefit of doing so.
Consider the fuel (which is expensive now), wear and tear on machinery, depreciation, and man hours. Now, ideally, one would not own or operate the machinery and therefore would avoid the depreciation (although John Deere tractors actually seem to appreciate in value as the dollar recedes) and hire someone to mow it for you. However, my husband has a lot of tractors and equipment, so we might as well use them, though it still takes someone to sit in the tractor.
So, i don’t know the numbers to make a math decision, but there is absolutely no doubt that the Bowyer Farm, which was cropped for 4 years with soybeans, wil hugely benefit having those suffocating weeds (ragweed and cocklebur) removed as a thick canopy preventing desirable species of grasses and legumes to take hold.
With two tractors going, one with a 15 foot brush hog, and the other with a 20 foot brush hog, it did not take long for Allen and my son, Dallas, to finish the job. It’s particularly a good job these days of intense ragweed pollinating for Dallas because he can sit in the air conditioned tractor cab and get along well. My husband has to do all the fueling and greasing, however.
These side by side photos are important in that they illustrate the difference between a paddock that was grazed in a more timely manner and the ragweed and cocklebur were removed by cows grazing, thereby opening the canopy and allowing an abundance of clover and lespedeza (poor man’s alfalfa) to flourish. The second photo shows that very little is able to grow under 4-6 foot tall thick ragweed. Even cocklebur and foxtail couldn’t get a toe hold in that mess.
About five days ago (21 Aug 22), i moved the cows/calves across the road to a paddock which had been previously grazed (13 Jun-23Jun 2022) via total grazing protocols. We’ve had more than plenty of rain, so regrowth was fantastic and the forages in this paddock are at the peak of grazing readiness to provide the cows a well balanced diet. I’m convinced they’ve gained 100 lbs in just those few days due to superior diet. Clearly, one can see i’m not mobbing them for best pasture results. This is due to my severe allergies and not being able to be outside. If not for a/c in my Gator, I would turn them out in large paddock and not see them for a week or more.