03640nas|a2200397 a 4500 20260818090622.0 100602s2009 th uu|m rtt 0| a1eng d .b12078116 AIT Thesis no. AE-09-09 Chaiyan Sirikun Development of a cassava stem harvester Pathum Thani, Thailand : Asian Institute of Technology, 2009 59 leaves : ill. Thesis ; no. AE-09-09 A thesis sub mitted in par tial f ulfillm ent of the req uirem ents f or the degree of Master of Engineering in Agricultu ral System s and Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 2009 Cassava is one of the major economical crops in Thailand, practically faces two major problems, namely, high labor cost, and labor shortage during the harvesting operation. The labor shortage during the harvesting operation of cassava is typically due the coincident duration of the harvesting period of the other upland crops. However, harvesting of cassava is a tedious and labor intensive task. Typically, harvesting operation of cassava stem orderly comprises as stem cutting and stems collecting. Therefore, a machine for cutting and collecting of cassava stem is needed by the farmers in order to reduce the labor requirement, human drudgery and harvesting time. Due to there reasons, cassava stem harvester, mounted to and powered by a 60-90 hp tractor, was designed. The machine comprises of six major units, namely: cutting unit, conveyor unit, collector unit, hydraulic system, transmission unit and frame. The designed cassava stem harvester is able to cut and collect the cassava stems. As the tractor moves forward for pulling the machine along the planting furrows, the cutting unit cut the stem 200-350 mm above ground, stem are automatically gripped and conveyed by the conveyor unit. Then, the cassava stem are collected into the collector unit. After testing and modifications, a prototype of cassava stem harvester was designed. Three traveling speeds of 1.51, 2.17 and 2.44 km/h were used for testing. The average field capacity and field efficiency varied from 0.13 to 0.22 ha/h and 75.61 to 90.24 % respectively. Fuel consumption of the speed range tested was between 15.3 and 20.8 lit/ha. The break-even-point compared to the manual harvesting was found to be 35 ha/year at tractor traveling speed low-2 (2.17 km/h). Cassava Thailand Salokhe, Vilas M., Chairperson Jayasuriya, H.P.W., Examination Committee Soni, Peeyush, Examination committee Roongruang Kalsirisilp, Examination committee Asian Institute of Technolog Felllowship, Scholarship donor Royal Thai Government Fellowship, Scholarship donor Asian Institute of Technology. Thesis ; no. AE-09-09 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B01737 .b12078116 mnait u 240329 0 100602 m a u 0 mnait mnait 20 Barcode : 30050120576078 CREATED : 2007-06-08 RECORD # : i12637014 LPATRON : 1025520 LCHKIN : 2015-04-30 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 11 TOT RENEW : 5 Barcode : 30050120576086 CREATED : 2007-06-08 RECORD # : i12637038 LPATRON : 1019658 LCHKIN : 2014-04-30 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 7 TOT RENEW : 7 28679 28679 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. AE-09-09 30050120576078 2026-08-18 09:06:22 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. AE-09-09 30050120576086 2026-08-18 09:06:22 2 2026-08-18 20