AGROTECHNOLOGY.pptx

tools and techniques

1. Agrotechnology : tools and techniques

2. AGROTECHNOLOGY: Agricultural technology refers to technology for the production of machines used on a farm to help with farming. Agricultural machines have been designed for practically every stage of the agricultural process. They include machines for tilling the soil, planting seeds, irrigating the land, cultivating crops, protecting them from pests and weeds, harvesting, threshing grain, livestock feeding, and sorting and packaging the products Agricultural technology is among the most revolutionary and impactful areas of modern technology, driven by the fundamental need for food and for feeding an ever-growing population. It has opened an era in which powered machinery does the work formerly performed by people and animals (such as oxen and horses). These machines have massively increased farm output and dramatically changed the way people are employed and produce food worldwide. A well-known example of agricultural machinery is the tractor. Currently, mechanized agriculture also involves the use of airplanes and helicopters.

3. Types of machinery Combines might have taken the harvesting job away from tractors, but tractors still do the majority of work on a modern farm. They are used to pull implements that till the ground, plant seed, or perform a number of other tasks. Tillage implements prepare the soil for planting by loosening the soil and killing weeds or competing plants. The best-known is the plow, the ancient implement that was upgraded in 1838 by a man named John Deere. Plows are actually used less frequently in the United States today, with offset disks used instead to turn over the soil and chisels used to gain the depth needed to retain moisture. The most common type of seeder, called a planter, spaces seeds out equally in long rows that are usually two to three feet apart. Some crops are planted by drills, which put out much more seed in rows less than a foot apart, blanketing the field with crops. Transplanters fully or partially automate the task of transplanting seedlings to the field. With the widespread use of plastic mulch, plastic mulch layers, transplanters , and seeders lay down long rows of plastic and plant through them automatically.

4. After planting, other implements can be used to remove weeds from between rows, or to spread fertilizer and pesticides. Hay balers can be used to tightly package grass or alfalfa into a storable form for the winter months. Modern irrigation also relies on a great deal of machinery. A variety of engines, pumps and other specialized gear is used to provide water quickly and in high volumes to large areas of land. Similar types of equipment can be used to deliver fertilizers and pesticides. Besides the tractor, a variety of vehicles have been adapted for use in various aspects of farming, including trucks, airplanes, and helicopters, for everything from transporting crops and making equipment mobile to aerial spraying and livestock herd management.

5. Only with mass production being aided by modern technology and intensive marketing can the agriculturist exploit both the domestic market as well as the international market to the fullest extent. The volume of production depends not only on the capital investments and marketing strategies but also on the technical capacity used during the production and processing stage.  In fact, technology has come to play a very significant role even in marketing these days. Technology is absolutely critical to the agro industry be it at the primary (production), secondary (processing) or tertiary (marketing and packaging) stage. Experts have always suggested that agricultural technology could play a vital role in addressing the issues and concerns relating to the conservation and management of rural resources. 

6. Plough (also 'plow') Ploughing is the first preparation for planting.  The plough is primarily designed to prepare the ground for cultivation by turning it over, thus burying the weeds and loosening the earth. It is generally agreed by historians that the earliest implement used for cultivation was probably a crude pointed bent stick or tree branch which was used to stir the soil surface. In effect, a hand held hoe was used in which the user scratched at the earth to form a tilth where corn could be sown. Over a period of time, these hand held hoes soon developed into simple ploughs. These primitive ploughs were eventually pulled by animals like oxen, camels and even elephants. Animals enabled the land to be tilled more easily and faster; thus more food was produced. The credit for this innovation goes to the Egyptians. These ploughs had different modifications in different parts of the world.

7. Harrow  After ploughing , other implements were used. The harrow was necessary to smoothen the soil in areas where the soil remained rough. It consists of a wooden or metal framework bearing metal disks, teeth, or sharp projecting points, called tines, which is dragged over plowed land to crush the clods of earth and level the soil. Harrows are also used to uproot weeds, aerate the soil, and cover seeds.  In the beginning the harrows were as simple as a tree branch but the harrow became more sophisticated after the Industrial Revolution. By the 1790s, two distinct types of harrows were in use: the square and the triangle, or "A" frame. The square harrow was used on old fields that were free of large obstructions, while the triangular frame was used on freshly ploughed fields. These models had wooden frames with wood or iron teeth. In modern times, harrows are of varied types. Some are simply dragged behind a tractor or draft animal; some are suspended on wheels; many have levers to adjust the depth of the cut

8. Seed Driller Seed drill was an innovation that allowed seeds to be easily planted deep into the earth instead of on top where the majority were washed away or otherwise lost. The machine was pulled by horses and consisted of rotating drills or runners that planted seeds at a set depth.  Horse Hoe It is horse-drawn machine which loosened the soil and killed weeds.  Reaper The first reapers cut the standing grain and, with a revolving reel, sweeping it onto a platform from which it was raked off into piles by a man walking alongside. The reaper could thus harvest more grain than five men using the earlier cradles.  The reaper was eventually replaced by the self-propelled combine, operated by one man, which cuts, gathers, threshes, and sacks the grain mechanically. The reaper was the first step in a transition from hand labor to the mechanized farming of today.

9. Threshing Machines Prior to the threshing machines farmers used an implement called 'flail' to simply beat the grain with sticks or ropes to knock the seeds from the stalks. But this was a back-breaking work and was of low productivity. Threshing machines were designed for rapidly removing the husks from grain.  With improvements in design and efficiency, threshing machines became progressively more common and the hand flail was gradually consigned to history. The machines could be driven by wind or water power, or by horses, but the steam powered thresher became the most familiar sight. They were eventually replaced in the middle decades of the twentieth century by the combine harvester which both harvests and threshes the crop in the field in a single operation. Tractor Tractor is a vehicle particularly crafted to exert traction at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture. The versatility of tractor is with respect to its attachments that it supports. The more the options for connecting attachments to the tractor, the higher is the cost. The most common tractor attachments include front end loaders, mowers, box blades, spreaders, tillers, plows, trailers and backhoes for plowing, tilling, disking, harrowing, planting, and similar tasks. Most tractor attachments are interchangeable so they can be used with different machines. The first tractors were steam-powered ploughing engines, followed by Gasoline Powered Tractors   .  

10. Irrigation Technology Water is undoubtedly the sine qua non for all irrigation activities, worldwide. Particularly in India, an unpredictable monsoon coupled with an increasing demand for food production (at the self-sustenance as well as commercial levels) has induced an imperative need for irrigation options other than those that are either extremely laborious and time consuming or simply too expensive for the small and marginal farmer.  Electric and diesel pumps can be used to extract groundwater for irrigating any large acres of land; however, some cost effective technologies that are being availed by a major section of farmers are as follows:-  Treadle Pump It is a foot operated water lifting device that can irrigate small plots of land of small holders in regions that have higher water table (not deeper than 25 feet). A treadle pump is a low cost system, simple in design and easily manageable; it appropriately answers the irrigation need for the small farmers.     

11. Drip Irrigation Technology Drip irrigation is a water-saving technology which enables slow and regular application of water directly to the roots of the plants through a network of economically designed plastic pipes and low discharge emitters. It maximizes crop productivity through increase in the crop yield and also the area for cultivation, and protects the environment through conserving soil, water and fertilizer resources, thus increasing the farmer income. Currently, this is being promoted by the Government of India in the form of kits in the water scarce regions in India. They are: Drum Kit  Bucket Kit  Family Nutrition Kit  Customised Systems

12. The impact of the use of these above mentioned irrigation technology can be summed up as follows:-  Frees the farmer from the limitations of rain fed farming  Raises the capacity of the farmer to grow crops in both winter and summer  Leads to land augmentation - With the use of the above mentioned technologies the farmers can cultivate all the year round thus increasing their cropping intensity to 200-300% and never leave their land fallow  Easy to use .