https://beef.unl.edu/learning/cornstalkgrazingcalc.shtml this has been the best calculator I have used for that. gets you in the ball park
Nov 16 | 04:52 PM
Nrcs range tech note 6 covers this. 120 bu corn is about 1.7aum/ac. I went by 1 ac per cow per month
South Dakota Soil Health Coalition
Nov 14 | 08:29 PM
I use the rule of thumb of 1ac per cow per month, assuming spring calving cows in good condition. The longer the cows are on the same field, quality of the forage will decline as they eat the grain and leaves first at some point you may supplement some protein once they are just consuming the stalk portion of the plant or if they need more conditioning.
Mentor
Nov 13 | 06:55 PM