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Varieties of nuts:


Izvor 10

The fruits of Izvor 10 variety walnuts are medium large (9, 5 g), with a thin shell. Kernels are plump, with high fat content – 55, 7%, with very good taste. Blossom buds are formed on lateral branches, as well. The tree forms a wide, relatively sparse crown. Insemination tales place with Sheinovo and Sliven varieties. This variety has early fertility and yields a lot, however growing it in the conditions of dry climate results in very small fruits and undersized kernel. It is resistant to anthracnosis and bacteriosis.


Fruit is medium-sized (10, 88 g), elongated, oval to elliptical, slightly flattened along the seam to the peak and only slightly on the hip to the base. The shell is thin and breaks easily. The kernel represents 51% of fruit weight and separates very well. Fat content is (71.4%) and with very good taste parameters. The tree is moderately growing, resistant to low winter temperatures. It has low susceptibility to anthracnosis. Sheinovo walnut variety gives fruit almost abundantly and regularly.


Moderately large fruits (13, 80 g), elongated elliptical, pretty strong. Kernel separates very well from the shell. Kernel is plump and represents 53% of fruit weight. It has a high percentage of fat – 74, 4%. The tree is powerful, with a wide spread crown. Insemination takes place with walnut varieties Dzhinovski and Dryanovo. Low susceptibility to anthracnosis.


The fruits of this variety of walnuts are large to very large (14, 68 g), round very strong. Kernel separates easily from the shell, it is plump and fills shell cavity very well. Yield rate is 51%, fat content – 67,39%. A vigorous tree with rare dome –shaped crown. Insemination tales place with walnut varieties Sheinovo and Plovdiv. Practically resistant to anthracnosis, though very susceptible to bacteriosis.

Environmentally friendly conditions for growing walnuts:

Walnuts prefer warmer locations, wild milder winters and less recurrent freezing. During

periods of deep rest, trees tolerate temperatures as low as -28°С, quite successfully.

Movement of juices begins usually very early though, and they are adversely affected by

recurrent frosts. Walnuts are sensitive to extremely high temperatures and prolonged periods

of dry weather resulting in growth suppression and inferior quality of fruits.

Walnuts are light-loving fruit plant. Single trees are powerful, productive, and long-lasting.

When growing them in densely populated plantations, thus shading each other , has a

negative effect on the development of the plants.

Walnut requirements to soil conditions are not tremendous, as long as soil is deep, permeable,

and warm, with deep subsoil aquifers.

Special features in the cultivation of walnuts

Differences in blossoming periods of male and female blossoms with some species of walnuts necessitate joint planting of different varieties thus creating conditions for their inter-pollination and insemination.

Walnut trees are shaped to a free growing crown with high trunks (1, 5-2 m) enabling mechanical collection of fruits, and supply of suitable material for wood industry in case of eradication of plantations. During the entire fruit-yielding period of walnuts periodical pruning is applied in order to ensure better lighting conditions of crowns.

Large distances between walnut planting lines enable growing of fruit trees with early fertility serving to utilize the plantations, (such as Morella cherry, peach, apricot, almond), usually planted between rows, however these can be placed in free locations in the rows. Until such time as walnut trees achieve growth, these enable additional income to be generated. As soon as walnut trees become obstacle for their development, these trees are removed.

Soil surface in walnut plantations is maintained predominantly as black fallow. In young

walnut plantations (max 6 to 8 years old) in the absence of thickening plants, intercrops can

be grown. In places with precipitation exceeding 800 mm and with irrigated conditions, soil

surface in walnut plantations may be grassed. On sloped terrains grassy vegetation minimizes damages due to water and wind erosion of soil.

Fertilization of walnut orchards with thickening trees depends not only on the requirements of the main crops, but also on these thickening trees. Fruit-yielding plantations are supplied with organic and mineral fertilizers, as other crops.

Walnuts are usually grown without irrigation, but watering during the first 5-6 weeks after

blossom and during the formation and growth of the kernel in July, August and September

also promote fruiting.