A farm machine cuts tall crops. 
A swather is a farm tool. 

A swather is a farm tool. 
Some swathers have their own engine. Other types are pulled by a tractor. The machine uses blades to cut the stems. These blades can be a sickle bar. They can also be rotating discs. A reel helps the plants fall neatly. A conveyor belt or auger moves the crop. This puts the plants into a neat row. The stems stay above the ground. This is on the stubble left from the cut.
Some machines have rollers. These rollers crimp the stems. Crimping means they crush the stems slightly. This helps the hay dry faster. In some places, people use chemicals to dry crops. This lets big machines called combines harvest them directly. Swathers are still common in Canada and the northern United States. 
A swather is a very helpful farm tool. 
There are a few ways this machine works. Some swathers have their own engine to move. Other types are pulled by a tractor. The machine uses a sickle bar or rotating discs. These parts cut through the plant stems. A reel helps the cut crop fall neatly. Then, a canvas or an auger conveyor moves the plants. This puts them into a neat windrow. The stems sit on top of the stubble. 
Farmers use swathers to help with drying. Some machines have horizontal rollers on them. These rollers crimp the stems of hay crops. Crimping helps the hay dry in less time. For grains, swathers add a step to the harvest. This step gives the grain time to dry out. This is like what old binding machines used to do. It helps the grain be ready for the next step.
Swathing is still very common in some places. You will see it in Canada and the northern United States. In places with long growing seasons, farmers might not need it. They can use combines to harvest standing grain. Some new grain varieties grow and ripen very fast. This means they do not always need swathing. Some farmers use chemicals like glyphosate to dry crops instead. 
This machine is even a mascot for a school. Hesston High School in Kansas uses it as a mascot. Hesston is a very important place for these machines. The AGCO Corporation has plants there. They make both swathers and combine harvesters. This shows how important these tools are to farming. You can think of a swather like a giant, moving mower. It does the work of mowing and raking at once.
A swather is a specialized piece of agricultural machinery used for harvesting. 
To understand how a swather works, we must look at its mechanical steps. First, the machine must sever the plant stems. It does this using either a reciprocating sickle bar or rotating discs. A sickle bar uses blades that move back and forth to cut. Once the plants are cut, a part called a reel helps guide them. The reel ensures the crop falls neatly onto a conveyor system. This system might use a canvas or an auger, which is a large screw-like device. Finally, the conveyor deposits the plants into a windrow. These rows sit on the ground, supported by the remaining stubble of the crop.

Geography plays a large role in how often swathers are used today. Swathing remains very common in the northern United States and in Canada. In these regions, the weather and growing seasons make this extra drying step necessary. However, in areas with much longer growing seasons, farmers often harvest standing grain directly with combines. Interestingly, modern science has changed this need as well. Some new crop varieties are capable of rapid maturity. Because these plants ripen so quickly, they sometimes do not require the swathing process at all.
Beyond just drying grain, swathing helps with the entire cleaning process. By windrowing the whole growing crop, farmers can achieve more consistent ripening. This process also helps in the dehydration of stalks and green weeds. This is important for a stage called winnowing, which happens after threshing. Winnowing is the process of separating the grain from other materials. If the weeds and stalks are properly dried, they are easier to separate from the useful grain. Alternatively, some farmers use chemical desiccation to achieve similar results. They may use chemicals like glyphosate, paraquat, or diquat to dry weedy or irregularly ripe crops so they can use a combine directly.
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