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Biennial cropping of raspberries for machine harvesting

, : Biennial cropping of raspberries for machine harvesting. Acta Horticulturae (60): 57-62

Problems arose in attempts to use a straddle harvester on raspberry crops grown in the conventional way. There was damage to young canes, which reduced the yield in the following year, while the presence of young canes increased the amount of fruit dropped to the ground. The biennial cropping system, in which the fruiting and vegetative phases are separated in time, eliminated the damage problem and increased the amount of fruit recovered.

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Related references

Waister, Pd, 1980: Biennial cropping of raspberries. Garden journal of the Royal Horticultural Society 105(8): 332-334

Hohlfeldt, I., 1992: Growing raspberries with biennial cropping. Field trials carried out at Pillnitz, Dresden, during 1986-90 showed that 15-20 canes/m of row-length was the optimum density for biennial cropping. Cutting the canes between Nov. and Mar. encouraged vigorous new growth and achieved cane lengths o...

Bonini, V., 1979: Biennial harvesting is profitable in raspberries. The normal practice of selectively removing old fruiting canes after the raspberry harvest was replaced by removal of both fruiting and new vegetative canes so that there was no harvest in the second year. Cutting down could thus be done by machin...

Clark, R.J., 1984: Biennial cropping, an alternative production system for red raspberries (Rubus idaeus L.). Difficulties encountered during mechanical harvesting are generally associated with the presence of both vegetative and fruiting canes at harvest. The biennial cropping system described separated these two types of canes in time. In hand-harvestin...

Clark R.J., 1984: Biennial cropping an alternative production system for red raspberries rubus idaeus. A difficulty encountered during harvesting raspberries is associated with the presence of both vegetative and fruiting canes at harvest. The biennial cropping system separates these 2 types of canes in time. Under Tasmanian [Australia] conditions,...

Anonymous, 1976: Harvesting raspberries by machine. Raspberry canes for mechanical harvesting are bent over and outwards horizontally in the winter, and the fruits are borne on short upright laterals. The mechanical shaker/harvester described requires 6 men to operate and can harvest 900 kg/h. Mech...

Anonymous, 1986: Machine harvesting of boysenberries and raspberries. A finger-wheel type harvester built at Levin Horticultural Research Centre was evaluated. Machine harvested yields were compared with hand-picked plots. Yield losses due to machine harvesting of boysenberries were due mainly to lower mean berry we...

Jennings, D.L., 1974: Breeding raspberries for machine harvesting. The criteria for selection of raspberry cvs for machine harvesting are firm fruit, ease of fruit abscission, good fruit colour, peduncles of unripe fruit that do not break and young cane that does not damage easily.

Callesen, O.; Thuesen, A., 1986: The possibility of machine-harvesting raspberries. A detailed study of the economics of raspberry growing and harvesting under Danish conditions.

Morrison, R.R., 1975: Economics of machine harvesting raspberries. In an address to a Dundee conference on soft fruit production, comparative data on machine and hand harvesting in Scotland in 1974 are presented which suggest that machine harvesting of raspberries is not viable if maximization of income is the ma...