Why Doesn't a Walnut Tree Bear Fruit? Plus Cultivation Techniques

The walnut tree, also called the Persian walnut tree, is grown in many parts of our country, mostly varieties that have been improved through artificial selection, which give higher yields and thinner shells. The nuts produced by the walnut tree are rich in nutrients and have a strong, rich aroma, making them very popular with consumers. In addition, the walnut tree can also serve as a shelterbelt along roads and has a certain economic value. The walnut tree has fairly strict requirements for its planting site, and growers often report that walnut trees fail to bear fruit, so what is the reason for that? What are the key points of cultivation techniques?

I. Why doesn't a walnut tree bear fruit?

1. Not enough time since planting

Compared with other fruit trees, the walnut tree bears fruit somewhat later; generally it takes three years before it can flower and bear fruit. If you plant it relatively late, the fruiting time will also be a bit later, and it may take five years to bear fruit regularly, or even longer.

2. Incorrect management methods

If the walnut tree does not receive proper management after planting, its growth will be affected to some degree. For example, insufficient water, insufficient fertilizer, improper pruning and poor pollination can all lead to the tree failing to bear fruit.

3. Caused by pests and diseases

If a walnut tree is attacked by pests and diseases, it is very likely to fail to bloom and bear fruit. At this point, the correct method should be chosen for scientific control. A common case is maggots during the flowering period, when many female flowers are eaten away, so of course no fruit will form.

II. Walnut tree cultivation techniques

1. Choosing the planting site

When planting walnuts, choosing the planting site is very important; generally a gently sloping field, flat land, or the area in front of and behind the house that faces the sun, is sheltered from the wind, is convenient for irrigation and has easy access to transport will all work.

2. Soil conditions

Walnuts are suitable for growing in sandy soil or sandy loam with good aeration, good water retention and good looseness. The soil layer should be somewhat deep, with more than one meter recommended.

3. Selecting seedlings

Only high-quality walnut seedlings can produce walnuts with high yields and good quality. So when selecting walnut seedlings, two- to three-year-old strong seedlings are generally better, with a height greater than 30cm and a root-collar diameter of no less than 1cm. In addition, the walnut seedling should have many fibrous roots and be free of pest and disease attacks; only then will the survival rate after planting be higher.

4. Watering

The growth of the walnut tree cannot be separated from water, especially during the growth period of young trees, so the requirements for drainage and irrigation are relatively high. The amount of water to apply should be decided according to the moisture level of the soil and the growth stage; it should not be waterlogged for a long time, nor drought-stricken for a long time, as both conditions are bad for the growth of the walnut tree.

5. Fertilizing

Fertilizing is an important means of ensuring the normal growth of the walnut tree and achieving high and stable yields; walnut trees at different growth stages have somewhat different fertilizer requirements.