Manchurian Fruit Fertility
One of the most popular types of walnut is walnut. Many gardeners want to grow it on their own plot, but the thermophilic culture does not take root in the middle and northern latitudes. In cold winters and short summers, the Manchu variety comes to the rescue, having almost identical properties and fruits.
Manchurian Walnut Description
Manchurian walnut (Chinese, Formosa, Dumbey) is a deciduous tree with a straight trunk and a wide spreading crown. Reaches a height of 20–25 m. The bark on the young trunk is light gray, gradually darkens with age. The sheet plate reaches a length of 1 m and has 7–19 sheets with small notches 10–20 cm long.
The number of fruits on the branches varies from 2 to 7 pieces. Nuts smaller than walnuts (3–7 cm in diameter), have a very dense green or brown shell and are pointed at one end. A monoecious plant has male (in the form of earrings) and female (in the form of small brushes) flowers. Pollination occurs with the help of wind. One adult tree can bear up to 60 kg of fruit.
When the Manchu nut begins to blossom and bear fruit after planting
The plant blooms in April - May, the crop ripens in August - September. Grown from a seedling, this nut will give the first crop four years after rooting. If the plant is propagated by seeds, then the fruits on it will appear in eight years.
Why doesn’t bear fruit and discard fruits Manchurian walnut
Chinese walnut in nature bears fruit once every two to three years, therefore, if you have not received the crop, this may be a natural pause. However, other reasons for its absence are possible. Before undertaking anything, you should understand why this can happen.
Important! Manchurian walnut is able to survive frosts down to -45 ° С. Due to this, its cultivation is possible in Siberia, the Urals and in the middle latitudes.
Freezing of female and male flowers
As mentioned above, the flowering of the tree begins quite early in April - May. When frost returns, freezing of flowers is possible. Since male flowers appear first, the probability of freezing of them will be above all. If other trees of this species are present on the site, pollination will occur at their expense, and the crop will still appear.
Planting seedlings under shading
The culture in question is very photophilous. In the shade, the plant develops quite normally, but is practically not able to bear fruit. A good crop will appear only if there is consistently good lighting or diffuse shade for several hours a day.
Important! Chinese walnut does not tolerate drought. It grows well in humid soils and atmospheric air.
One of the reasons for the decrease or complete lack of yield in trees of this species is its "fattening". They say that a tree is “fattened” when it is healthy and provides a stable growth of green mass, but does not produce flowers and does not bear fruit. A similar phenomenon occurs as a result of excessive amounts of nutrients and fertilizers.
To remove the tree from the state of "obesity", you should stop making fertilizing and fertilizing in the near-trunk circle.If the cessation of feeding did not work, it is worth starting pruning the roots. To do this, they dig a plant around in a circle, retreating 1.5 m from the trunk to a depth and width of 25 cm. In the opened recess, large roots should be chopped off, small ones should not be touched. After the procedure, the furrow must be buried and compacted.
Did you know? In the first years of growth, Manchurian walnut gives a very rapid growth: in a year it can grow by 2 m
"Loneliness" Manchurian tree
The appearance of female and male flowers on the same tree may not coincide in time. As a result, if a tree stands alone on a site, it may not bring a crop.In order to guarantee a good harvest, they try to plant two or three trees of this species on one site. Flowers from neighboring trees are pollinated among themselves, which makes it possible to get an ovary.
Tree care tips
Experienced gardeners recommend the following:
- The tree needs regular watering in the dry season (4-5 times per season, 20 liters of water under an adult tree). Especially carefully you need to monitor the soil moisture immediately after planting and in the first three years (watering at least 7 times per season for 10 liters of water in the trunk circle).
- How many times and when to water, you can determine if the ground under the crown is torn to a depth of 30 cm: if the earthen ball crumbles in your hand, it is time to water.
- After each irrigation, the soil must be loosened, dug to a depth of 10-15 cm and weeds removed.
- A moistened and loosened near-stem circle should be mulched with sawdust or peat.
- After the end of the season, watering is stopped in order to prepare the plant for winter.
- To protect the plant from sunburn in summer, from the south side at a distance of about 10 m, you need to plant a spruce, fir or birch. This will form a shadow in the hottest summer hours.
- Seedlings of the first three years of growth for the winter are covered with burlap, which is removed at the first thaw.
- At the end of the season (September), the tree is fed 20 g of superphosphate, diluted in 10 l of water.
- In the spring, after the buds open, it is possible to carry out sanitary pruning of the nut. Remove damaged, dry, diseased branches, as well as those that unnecessarily thicken the crown. Forming trimming is virtually unnecessary.
So, growing Manchurian walnut is quite simple, just follow the recommendations for planting and care. A special and indispensable in many cases, the advantage of such a tree is its frost resistance - despite the fact that it is a close relative of a walnut, and its fruits have similar beneficial properties.
Did you know? Manchurian walnut lives up to 250 years and actively fruits 80 of them.