Now this, being myself an agricultural equipment "fan", is a very interesting topic
About the balers: in states like New Mexico and Texas, where there isn't enough rainfall and very hot days and so the crops become dry, other than pivot irrigation some farms use a machine called steamer, which is hitched between the tractor and the baler, that sends hot steam to the baler and so ensures an high quality crop even if it's baled during the hottest hours of the day.
Staheli West Steamer
There are two main types of bales, and so balers:
Square bales and round bales
- Square bales can be small bales or large bales, the most common bale size on medium-big farm operations / custom baling operations is 120 x 90 cm, and so the difference between large square bales can be the density of the bale.
An image showing a 2020 New Holland T8 AutoCommand (CVT Transmission) pulling a 2020 New Holland BigBaler 340 High Density baler and a 5 bales accumulator, which as the name says accumulates 5 bales and then drops them at the same moment. This machine is used to make the bale loading easier, by unloading groupd of 5 bales in the same place.
Another image, this time a New Holland T7 Heavy Duty AutoCommand tractor pulling a New Nolland BB 340 Plus large square baler
- Round bales can have different diameters: between 110 and 180 cms ca
Example showing a New Holland T5 Utility pulling a New Holland Roll-Belt 560 round baler
Sometimes a wrapper is used to wrap the bale: this helps protecting it from the weather, but is also a way to ferment the crop inside. The wrapper can be found mounted shortly behind a round baler on the same chassis, or on an independent chassis.