Pengaruh Ketinggian Pemangkasan Dengan Mesin Potrum SRT- 03 Terhadap Torsi Pemangkasan dan Kualitas Lapangan Rumput Bermuda (Cynodon dactylon) Tiff Way 146

Abstract

Rotary mower is one of mowing tools commonly used to maintain lawn or turfgrass. Mowing height and mowing torque are important factors that should be taken into account in sustaining grass quality and designing a rotary mower. The study was addressed to recognize the influence of mowing height to required mowing torque and turfgrass quality. The mowing torque was measured at mowing height of 2, 3 and 4 cm. Measurement of mowing torque in the field was done by using a specially designed turfgrass rotary mowing apparatus that representing a rotary mower mowing mechanism. The apparatus was equipped with torque measurement system. The measured average torque was used to calculate the power requirement of mowing. The needs of maximum and minimum mowing torque to mow turfgrass for all mowing height were 0,68 Nm and 0,05 Nm. The average mowing torque were 0,51 Nm, 0,24 Nm, and 0,08 Nm, at mowing height of 2, 3 and 4 cm respectively. The average power that required to mowing was 146,8 watt, 96,1 watt, and 23 watt respectively. The grass quality was evaluated in terms of color, density, yield and bundle of grass. The best quality of turfgrass surface was achieved when it was mowed at the height of 3 cm. It had density of 350 grass shoots/100 cm2, yield of 9 g/m2, and green color.