Article in September Progressive Farmer: Deer problems discussed, Wisconsin used as an example. Deer harvest in 2015 was 310,000 animals, down from about 500,0in 2006. The best year on record was 2000 when they took 615,000. Wisconsin's deer population is 1.4 million. It is estimated that the deer population works out to be 9.3 per square mile, but in some areas the density is more than 50 per square mile. Farmers claim $2 million in crop damages per year but unreported crop damage may approach $30 million. One problem is fewer hunters. Another is lack of communication between hunters, land owners, and the state. One expert pushes for longer hunting seasons and more anterless deer hunting opportunities.
Wisconsin, of course, is not alone. 70 years ago the total US deer population numbered less than Wisconsin's present day annual harvest. The experts estimate that today the US has 30 million deer. In 1930 we had 300,000.
Fencing is an expensive way to keep deer out. The article shows a 8 foot high electric fence with 6 to 9 wires. Based on my garden experience a single wire chest high has a good chance of keeping deer out, but I also have 2 wires close to the ground to keep raccoons out. They also suggest a 10 foot woven wire fence which is too expensive for any but very valuable crops. This is basically the kind of fence I have seen on game farms.
KEH