In irrigated crop, compost should be applied about a month before sowing. It is the preceding crop in the rotation which receives the manure. The rain fed crops are seldom manured directly. Fertilization of barleyįertilization is the process which is needed to gain more production of crops and it also used to accelerate the production time of crops. In contrast, farmers in the Debre Berhan areas normally give their oxen a rest period at mid-day during which animals are watered and fed. The Zeit area are worked throughout the day with few breaks. Except for the metal tine which the farmer has to buy from the blacksmith, the rest is home-made.Įach cultivation pass is made perpendicular to the previous one so as to disturb the whole soil. The traditional plough is a light implement ranging from 17 to 26 kg with the yoke and makes it possible to be transported together to and from the field over different terrain by one person. At each side of the metal point are two wooden wings which push the soil aside. The traditional plough consists of a metal point or tine, fastened on a wooden arm, to the pole, which in turn is fastened to a wooden neck yoke. and tillage are carried out by oxen, pulling the traditional plough the maresha Again in certain small pockets of the country, horses and mules are occasionally used to pull the maresha, but generally, oxen provide the main tractive force. Barley is highly susceptible to waterlogging and care should be taken during site selection. Barley best grows on soils with loam and medium clay content and on sandy soils that contains essential nutrients. In general, barley best grows in highlands that receive enough rainfall and intermediate relative humidity. Barley produced in such areas are mainly used for food purpose than beer production because the seeds contains more nitrogen.
However, the crop can grow in areas that receive 400-500mm. In moisture stress areas the crop can give better yield than wheat. Barley can grows in areas where wheat and teff cannot grow due to frost. The crop may grow at mid altitude at some extent. The grain was narrow and elongated having an average sphericity of: -47.923☑.8 mm Shear strength at moisture content 22.5% = 6.18 MPA Area of straw = 6.68 Geographical Distributionīarley suitably grows from 2000m-3500m Suitable Environmental conditions a. The mechanical properties of barley in average is The average of the principal diameters was found to be: -5.41☐.44 mm, 1000-grain weight was: -41.9☐.2 g The wild barley is less commonly occurred and is usually found in disturbed habitats. spontaneous, is abundant in grasslands and woodlands throughout the Fertile Crescent and is abundant in disturbed habitats, roadsides and orchards. The wild ancestor of domesticated barley, Hordeum vulgare, subsp. It is a self-pollinating, diploid species with 14 chromosomes. The power reaches to the required place through one stage reduction gear box having a speed reduction of 8:1 The slider crank mechanism converts rotary motion to reciprocating motion for the cutter bar and cross belt change axis of rotation from horizontal to vertical for the conveyor.īarley is a member of the grass family. The power source of the reaper is water pump motor having 5hp and 3600 RPM, which is used to drive cutter and conveyor mechanism additionally for pumping water.
Cutting width of the reaper is 1000 mm, conveying speed 0.85 m/s and forward speed of 0.8 m/s (driven by man). The crop gathered by the star wheel, and the cut crop can be conveyed to one side through lugged conveyor belt. The cutting mechanism is reciprocating type in which one movable cutter bar reciprocates over a counter shear fixed cutter bar, which form scissor like cutting action. The header consists of cutter and conveyor mechanism. The main components of reaper are header, power source and transmission and frame. Reaper machine is a harvesting tool which cut crop and windrow it on the field. Barley have a physical properties cross sectional area of stalk 6.68 2 and a mechanical properties of static ultimate shear strength up to 6.18 MPa. This project is done on the design of barely reaper machine.
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