Session - 3
Agricultural Vehicles
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Have you seen tractors in your area?
Do you know the meaning of tractor?
We can say that a tractor is an engineering vehicle particularly designed to deliver a high torque at low speeds, for the purpose of
hauling a trailer or machinery used in agriculture or Large civil construction.
Most commonly, the term Tractor is used to describe a farm vehicle that provides the power and traction to mechanize agricultural tasks, especially tillage, but nowadays a great variety of tasks.
Agricultural implements may be towed behind or mounted on the tractor, and the tractor, may also provide a source of power if the implement is mechanized.
Tillage is the agricultural preparation of soil by mechanical agitation of various types, such as digging, stirring, and overturning.
Tractors
•The word tractor was taken from Latin, being the agent noun of trahere "to pull". So tractor can be defined as "an engine or vehicle for pulling wagons or ploughs"
•Tractors are heavy vehicles serving the purpose of hauling at an extremely low speed.
•India being one of the major agricultural country, makes the use of tractors on a large scale.
• It is one of the heaviest vehicle, basically used for carrying out the agricultural tasks in an efficient way.
•Modern tractors usually employ diesel engines which deliver 18 to 575 horsepower.
•The major producers of tractors in India are Ashok Leyland, Escorts, Force
•Motors and Swaraj Enterprise. The most common use of the term "tractor" is for the vehicles used on farms.
•The farm tractor is used for pulling or pushing agricultural machinery or trailers, for ploughing, tilling, disking, harrowing, planting and similar tasks.
•A variety of specialty farm tractors have been developed for particular uses.
•These include row crop tractors with adjustable tread width to allow the tractor to pass down rows of corn, tomatoes or other crops.
Utility Tractors
•Many utility tractors are used for non-farm grading, landscape maintenance and excavation purposes, particularly with loaders, backhoes, pallet forks and similar devices. Small garden or lawn tractors designed for suburban and semirural gardening and landscape maintenance also exist in a variety of configurations.
•The durability and engine power of tractors make them very suitable for engineering tasks. Tractors
•can be fitted with engineering tools such as dozer blades, buckets, hoes, rippers, etc. The most
•common attachments for the front of a tractor are dozer blades or buckets. When attached to engineering tools, the tractor is called an engineering vehicle.
Combine Harvester
•The combine harvester, or simply combine, is a machine that harvests grain crops.
•The name derives from the fact that it combines three separate operations, reaping, threshing, and winnowing, into a single process.
•Among the crops harvested with a combine are wheat, oats, rye, barleycorn (maize), soybeans and flax (linseed).
•The waste straw left behind on the field is the remaining dried stems and leaves of the crop with limited nutrients which is either chopped and spread on the field or baled for feed and bedding for livestock.
•Combine harvesters are one of the most economically important labour saving inventions, enabling a small fraction of the population to be engaged in agriculture.
Modern Farming Machines
Modern Farming Machines
combine harvester
***End of Session 3 of Unit-2***
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