Wednesday 14 July 2021
- Walnuts are widely grown in several parts of Europe. They are trees with a high commercial perspective. Their nutritious nuts and good quality timber are of great value and market demand is correspondingly high. The countries of Southern Europe and the Mediterranean are leaders in the European market, while the USA and China are the most important world players.
- Walnut prefers sunny conditions and well-drained, deep (60 - 80 cm) soils rich in organic matter. The roots are sensitive to the lack of oxygen that can occur in wet conditions. The optimum pH is 6 or higher, however, they still grow well at pH 5 - 6. Walnuts are species with male and female flowers on the same plant. Planting a combination of varieties improves pollination and therefore increases productivity.
- The trees are planted in large squares in the field. Planting takes place between late November and early March. Adding organic manure to the area under the tree canopy can help with installation and growth. The best pruning period is from June to late November (usually after harvest). Pruning aims to increase the light provided to the branches and improve the aeration conditions in the crown. Removing the lower branches also facilitates harvesting and cultivation practices. As of this moment, the most well known varieties are Chandler and Fraguete. Chandler is the most productive variety, whereas Fraguete is mainly used as a pollinator, while still being productive.