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An electro-hydraulic head-speed control system was developed and installed on a Bragg lowbush blueberry harvester. Factorial field experiments were used to collect data on picking effectiveness at head-speed-ground-speed ratio's (HSGSR) of 1.3,1.5,and 1.7.Ground speeds usedwere 1.6,2.1, and2.6 km/h. Data were collected in three fields in Colchester County, NS in August 1991. Itwas found that picking losses were minimized to5% of the total crop produced if a HSGSR of 1.7 was used up to a maximum forward speed of 2.1 km/h. Berry wetness or plant height did not significantly affectpicking effectiveness.
K.Sibley 1993. EFFECT OF HEAD-SPEED-GROUND-SPEED RATIO ON THE PICKING EFFECTIVENESS OF A LOWBUSH BLUEBERRY HARVESTER. Canadian Agricultural Engineering 35(1):33-39.
Canadian Society for Bioengineering