After first tractor launched in 1933, many ideas for making tractors more efficient came in reality. Diesel engine tractors are predominantly used in farming.
However, recently New Holland launched hydrogen powered tractor (NH2). This NH2 tractor is a 106-hp working prototype able to perform all the tasks of a T6000 tractor while operating almost silently and emitting only heat and water. The fuel cell generates less heat than an internal combustion engine; offers a consistent output of power; and does not produce polluting nitrogen oxides, soot particles or carbon dioxide. The clean operation of the tractor brings added health benefits when working in confined areas, such as barns or greenhouses. (http://agriculture.newholland.com/)
Also Escort launched ‘Anti-Lift Tractor’ with fuel efficient XP engine. Built around the themes of Driver Safety and Owner Savings, the new category of ‘Anti-Lift Tractors ' (ALT), made specifically for commercial haulage operators, are available in two models: ALT 4000 and ALT 3500. This is ALT technology version 1.0, which Escorts is planning to extend further to newer versions 2.0 and 3.0 in the long run to bring even more safe, robust and efficient products for this growing segment. (http://www.escortsgroup.com/ )
As you know that, the concept of self driven car is popular among community. We can expect that Self driven tractors will be in farms or agriculture soon. Autonomous Tractor Company founder Terry Anderson invented a self driven tractor. This tractor is equipped with radar. If it senses, say, a tree stump, or a fox scampering across its path, it shuts down.
Electricity driven tractor is also one of idea in Tractor innovation. Caterpillar launched its first electric driven tractor D7E. The D7E moved 10 percent more material per hour, using 10-30 percent less fuel that its predecessor. It was also easier to operate, had 40 percent fewer moving parts, and a far lower lifetime operating cost.