Annals of Warsaw University of Life Sciences - SGGW.

6 G. ViselgaEXPERIMENTAL OBJECTIVEThe experimental objective is to group,analyse and generalise the key trends andneeds of field crop and potato productionmodernisation, and to determine therelationship between them.To investigate the processes ofsoil deep loosening, furrow looseningby rotary implements separating andcrushing the clods, and mulching whengrowing potatoes with permanenttramlines and on enlarged furrows, aswell as to determine possibilities for thereduction of soil packing energy costsper unit of production and for potatolifting improvement.To evaluate the possibilities of thesimplest circular energetic modulus(Fig. 1) of the gantry agriculture, theconditions for the operation of the mainworking parts in the circular trajectoryand to use the best results to make theperspective simplification trends of thetechnological schemes of the powermodulus of the reciprocal movementtype.EXPERIMENTAL METHODSThe following composite parts ofcombined aggregates testing stands wereformed: rotary cultivator – mulchingequipment, tramlining equipment withdeep loosening chisel shares, clod andstone separator, special spur-type roller.These implements can be aggregatedwith 14 kN class MTZ-82 tractorsautonomously or fitted in combinedaggregates.Tramlining equipment is designedto form tramlines and to loosen the soilbetween them while planting potatoes,as well as for localisation of soil rich inhumus or green manure while preparingthe soil for potatoes. It consists of anuniversal frame, two tramline hillers,two support depth control wheels, andthree chisel shares. Tramline hillers areplaced in front of tractor wheels.For the determination of soil hardnesswe used an electronic self-writingpenetrometer CP20 (England) with astandard 12.5 mm diameter cone-shapedtip. Soil resistance to this tip pressingAR p1R p2l 1 =0; α 1 =0.α 2l 2AFIGURE 1. The scheme of the power modulus of the circular gantry system