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StarFire is a wide-area differential GPS developed by John Deere's NavCom and precision farming groups. StarFire broadcasts additional "correction information" over satellite L-band frequencies around the world, allowing a StarFire-equipped receiver to produce position measurements accurate to well under one meter, with typical accuracy over a 24-hour period being under 4.5 cm. StarFire is ...
The B was first produced in 1935. It was a general-purpose row-crop tractor, less expensive than the Model A at about two thirds the A's size. As with most row-crop tractors, the spacing between the rear wheels could be adjusted to suit row spacings, and the front wheels were offered with wide and narrow wheel arrangements. The B could work two ...
The day marked the release of a revolutionary line of farm tractors, with sleek new styling by Henry Dreyfuss, that would soon become the standard by which all other farm tractors would be measured. [5] These tractors were the 1010, 2010, 3010 and 4010. These were soon followed by the model 5010 standard introduced in 1962.
The tractor does most of the work, with the farmer stepping in for emergencies. [46] Technology is advancing towards driverless machinery programmed by GPS to spread fertilizer or plow land. Autonomy of technology is driven by the demanding need of diagnoses, often difficult to accomplish solely by hands-on farmer-operated machinery.
As with most row-crop tractors, the spacing between the rear wheels could be adjusted to suit row spacings. The front wheels were offered with wide and narrow wheel arrangements, as well as high-crop and single front wheel versions. The tractor was equipped with a two-cylinder side-by-side engine of 99.7 cubic inches (1,634 cc) displacement.
The John Deere Model R tractor was John Deere's first diesel tractor. A large, heavy tractor, it had fixed wheel widths and was not produced as a row-crop tractor with adjustable axles. The R was followed in the John Deere numbered model series by the John Deere 80, 820 and 830 tractors, which represented evolutionary upgrades to the basic R.
In the early 1930s, Allis-Chalmers tractor division manager Harry Merritt's study of farm census figures showed that-they have a lot of potential in the field and even in the yard, of the nearly seven million farms in America, some four million were of 100 acres (0.40 km 2) or less. Furthermore, the million or so tractors used on American farms ...
This is a list of companies that formerly manufactured and / or sold tractors. Some tractor and / or agricultural machinery companies have discontinued manufacturing, or were bought out or merged with other companies, or their company names may have changed.