EFFECT OF LOCALLY MADE SUBSOILER TINES ON SOME ENERGY REQUIREMENTSGhazwan Ahmed Dahham, Othman Muayad Mohammed Tofeq and Layth Mahmood YahyaAbstract Subsoiler plow energy requirement in different soil types and tine types which is used farmers and researchers these based on the American Society of Agricultural Engineers (ASAE) standards is not well documented for Iraqi soils, so this research will help generate this data under their field conditions in Iraq. The investigation was conducted in three field sites. The study split-split plot (RCBD) was used to analyze the results. There are three factors which were studied, soil type (silty loam, loam sandy, and silty clay), tillage speed (2.42 and 4.17) km/h and tine shape (tapered, winged and conventional) with effect these factors on energy indicators: drawbar power (KW), energy requirement (KW.h.ha-1), specific energy (MJ.m-3), energy utilization efficiency (m3.MJ-1), specific energy efficiency (%) and amount disbursed energy (MJ.ha-1). The abstracted significant points were: In this study range the drawbar power from 7 to 15.48 (kW), energy requirement from 53.13 to 189(KW.h.ha-1), specific energy from 14.91 to 35.23(MJ.m-3), specific energy efficiency from 8.33 to 24.61(%), energy utilization efficiency from 53.13 to 189.42(m3.MJ-1) and amount disbursed energy from 513.2 to 1829.54(MJ.ha-1), at different soil conditions and tillage depth 45 (cm). The tine tapered significantly surpassed on both of tines winged and conventional in all experiment parameters. |