ACDSeePrint Job - Poljoprivredna tehnika

UDC: 631.352:633.31Potkonjak V, Zoranović, M, Anđelković S.Exploitation characteristics of different mower tzpes in alfaalfa mowingCont. Agrg. Engng, 35(2009)1-2, 73-78, 4 tab, 1 fig, 9 ref.There are shown results of four mower types during alfalfa mowing: classical mower withfixed fingers, standard constructtion of mower with two sticks, rotary mower with 6 discs androtary mower with 14 discs. During mowing process the best quality achieved classicalmower with the least losses (average 1.27% of total mass of green yield), while the largestlosses achieved rotary mower with 6 discs (3.16%). Crucial influence on realized losses bearsachieved stem cutting hight and working speed by significant influnce on stem chopping.Stems cutting hight for all tested mowers was in tolerant value range for alfalfa (6-8 cm).UDC: 632.95:582.916.26Sedlar A, Đukić N, Bugarin R.Pesticide application tehnique in oilseed rape plant protectionCont. Agrg. Engng, 35(2009)1-2, 79-84, 6 fig, 7 ref.Oilseed rape is one of the most important industrial crops in the world. Production andprotection of oilseed rape have some specific, according to the other crops. Chemical plantprotection of oilseed rape is most used way of plant protection. In oilseed rape productionthere is need for protection against disease, insects and weeds. In this paper work are shownpesticide application tehniques which should use to reach effective chemical plant protection.Somer D, Ponjičan O, Bajkin A.UDC: 621.313.14:621.3.016.2:616-001.35.005.52The analysis of power distribution of electric motor on electric hoeCont. Agrg. Engng, 35(2009)1-2, 85-94, 2 tab, 2 fig, 10 ref.For conditions of nuzzle in the green house it’s necessary to define the specific cuttingresistance and coefficient of moving resistance so that the motor power selection is easier.Analyses of power distribution based on electrical measuring showes that the usage ofelectromotor is 70%, specific cutting resistance has the value of about 5-7 N/cm 2 and thecoefficient of roling resistance 0,63. At 60 rpm regime there is enough power reserve toincrease the digging depth or the working width from 30 to 60 cm, with 25 cm of diggingdepth. Theoretically at 80 rpm regime it is possible to digg at 17 cm depth, with 4 roses.154