Total foliar nutrition applied on European hazelnut
2018
Cristofori, V. | Bortolato, A. | Valentini, R. | Stelliferi, R. | Valentini, B.
In Lazio region, the widespread hazelnut monoculture could play a considerable role in mineral pollution. Currently, it is necessary to define sustainable nutritional management of hazelnut orchards in these areas. With the aim of limiting losses of mineral elements by production systems, an experiment was initiated based on the management of total foliar nutrition of hazelnut orchards. The trial was conducted in an adult orchard of hazelnut cultivated with ‘Tonda Gentile Romana’ and ‘Nocchione’. Two randomized experimental theses were subjected to foliar nutrition conducted in several applications of macro and micronutrients during the growing season (thesis A, 4 treatments; thesis B, 3 treatments), in comparison with controls fertilized with the traditional technique of a single application in early spring. The measurements and observations focused on the vegetative traits of the trees, the leaf analysis at the beginning and the end of July, and the production and nut and kernel characteristics. The data collected during three years of investigation and the leaf analysis based on the determination of the content of nitrogen, phosphorus, potassium, calcium, magnesium, boron and iron, showed no significant differences between the compared theses, noting the appropriateness of total foliar nutrition in the period of the trial.
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