Tonda di Giffoni
Tonda Francescana Grafted
Fertile de Coutard (Barcelona)
TECHNICAL CHARACTERISTICS OF TONDA VARIETY
Distinction for its productivity following an evaluation survey of different varieties of hazelnut, conducted by the Institute of Deciduous Trees of Naoussa, Greek Agricultural organization ' DIMITRA ' and the Department of Agriculture of the Aristotle University of Thessaloniki
CERTIFIED & HEALTHY PROPAGATION MATERIAL
Hazelnut thrives in soils of medium texture, with good drainage and low groundwater level, with light acid to neutral reaction (Ph 5.5 – 7.5).
It is a plant of temperate regions. It prefers mostly cool areas with relatively high humidity. During the fertilization of the flowers (March-April), when the temperature drops below-7 °C the flowers are destroyed and the fruiting is minimal. The tree, however, can withstand temperatures of up to-25 °C.
In areas where there is a rainfall of more than 700-1000 mm and its distribution is uniform, during the germination period, no special irrigation is needed, but during the period July-August for high yields the needs touch the 2000m3/ha.
Particular attention should be paid to the addition of nitrogen and potassium, because high amounts of nitrogen increase the thickness of the shell and reduce the size of the crumb. Also, the adequate addition of potassium decreases the percentage of empty fruits. As regards the trace elements particular importance should be given to the iron and boron adequacy. The lack of boron results in an increased proportion of hazelnut without kernel.
From early August to mid September
Mechanical harvesting 2-3 repetitions
Yields from 2,500-5,000 kg/ha in-shell kernel, without leaf-casing
The 3,000 kg/ha is a feasible performance
Hazelnuts start to bear in-shell kernel from the 3rd year and come into full nut production in the 10th year.
4th - 500kg/ha
5th - 1,000kg/ha
6th - 1,500kg/ha
7th - 2,000kg/ha
8th - 2,500kg/ha
9th - 3,000kg/ha
10th - 3,500kg/ha