Large round bales, if they're round, or large square bales, if they are rectangular-shaped.
q 4'x6' round bale makes 25 bales a 5'x6' makes 30 bales
One
An acre is 43,560 square feet. Most small square bales would lightly cover at least 2x10 ft, but more likely 2x15 ft . Therefore; 43,560 divided by 30 (if each square bale covers 30 sq/ft as an average) = 1,452 square bales. If the bales are larger (round bales), obviously fewer bales would be required. Large round bales would likely provide at least 10X the coverage so likely in the range of 145 round bales
That depends on what type of bale you're referring to. If you're referring to small square bales, that would be about four. If you're referring to small round bales, that would be only one. Large squares: one third. Large round bales, one half.
$25.00
7 round bales
Define "conventional." There are many types of bales that are considered conventional from small squares to large round.
That all depends on the size and type of bales you have, as well as the forage biomass of that field. Bales come in not just one size, they come in small square, large square, small round and large round bales. Forage biomass is also different from year to year, depending on current seasonal conditions (moisture, sunlight, soil) for your area.
A tractor capable of lifting at least 2,000 pounds is best for moving round bales of hay. It would probably take a horsepower rating of about 40 or 50.
Generally yes, if it's grass hay the big round bales will be cheapest, then the big square ones and lastly the small square bales will be most expensive. Alfalfa hay will cost more than grass hay of course.
Over 100 kids die a year from playing near hay bales.