Hazelnuts do not generally need to be toasted; indeed, Kentish cobnuts are still sold fresh. Presumably toasting was done to make them more digestible for children. Toasting the nuts – PowerPoint PPT presentation
Hazelnuts do not generally need to be toasted indeed, Kentish cobnuts are still sold fresh. Presumably toasting was done to make them more digestible for children. Toasting the nuts was thought to increase how long they would keep, and historically, they have been a useful food for mariners because they keep well.
Well documented throughout history, hazel has been grown in coppices for use in wattle and daub buildings and in hedges. The Romans cultivated hazelnuts, including in Britain, although no evidence indicates they spread specific cultivars. Cultivated varieties have been grown since at least the sixteenth century, with a great increase in varieties during the nineteenth century. In particular, the first widespread cultivar, the 'Kentish Cobnut', was introduced in 1830.
The traditional method to increase nut production is called 'butting', which involves prompting more of the trees' energy to go into flower bud production, by snapping, but not breaking off, the tips of the new year shoots' six or seven leaf groups from the join with the trunk or branch, at the end of the growing season The traditional term for an area of cultivated hazelnuts is a plat.
3 Harvesting
The many cultivars of the hazel include 'Atababa', 'Barcelona', 'Butler', 'Casina', 'Clark', 'Cosford', 'Daviana', 'Delle Langhe', 'England', 'Ennis', 'Fillbert', 'Halls Giant', 'Jemtegaard', 'Kent Cob', 'Lewis', 'Tokolyi', 'Tonda Gentile', 'Tonda di Giffoni', 'Tonda Romana', 'Wanliss Pride', and 'Willamette'.4 Som e of these are grown for specific qualities of the nut, including large nut size and early and latefruiting cultivars, whereas others are grown as pollinators. The majority of commercial hazelnuts are propagated from root sprouts.4Some cultivars are of hybrid origin between common hazel and filbert.5 One cultivar grown in Washington, the 'DuChilly', has an elongated appearance, a thinner and less bitter skin, and a distinctly sweeter flavor than other varieties
Hazelnuts are harvested annually in mid-autumn. As autumn comes to a close, the trees drop their nuts and leaves. Most commercial growers wait for the nuts to drop on their own, rather than using equipment to shake them from the tree. The harvesting of hazelnuts is performed either by hand or, by manual or mechanical raking of fallen nuts.
Four primary pieces of equipment are used in commercial harvesting the sweeper, the harvester, the nut cart, and the forklift. The sweeper moves the nuts into the center of the rows, the harvester lifts and separates the nuts from any debris (i.e. twigs and leaves), the nut cart holds the nuts picked up by the harvester, and the forklift brings a tote to offload the nuts from the nut cart and then, stacks the totes to be shipped to the processor (nut dryer).
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The sweeper is a low-to-the-ground machine that makes two passes in each tree row. It has a 2 m (6 ft 7 in) belt attached to the front that rotates to sweep leaves, nuts, and small twigs from left to right, depositing the material in the center of the row as it drives forward. On the rear of the sweeper is a powerful blower to blow material left into the adjacent row with air speeds up to 90 m/s (300 ft/s). Careful grooming during the year and patient blowing at harvest may eliminate the need for hand raking around the trunk of the tree, where nuts may accumulate. The sweeper prepares a single center row of nuts narrow enough for the harvesting tractor to drive over without driving on the center row. It is best to sweep only a few rows ahead of the harvesters at any given time, to prevent the tractor that drives the harvester from crushing the nuts that may still be falling from the trees. Hazelnut orchards may be harvested up to three times during the harvest season, depending on the quantity of nuts in the trees and the rate of nut drop as a result of weather.
Production of hazelnuts in 2014ountryProductionth ousands of tonnes Turkey450.0 Italy75.5 Georgia37. 4 United States32.7 Azerbaijan29.8World713.5The harvester is a slow-moving machine pushed by a tractor, which lifts the material off the ground and separates the nuts from the leaves, empty husks, and twigs. As the harvester drives over the rows, a rotating cylinder with hundreds of tines, rakes the material onto a belt. The belt takes the material over a blower and under a powerful vacuum that sucks any lightweight soil and leaves from the nuts, and discharges them into the orchard. The remaining nuts are conveyed into a nut cart that is pulled behind the harvester. Once a tote is filled with nuts, the forklift hauls away the full totes and bring empty ones back to the harvester to maximize the harvester's time.