Cultivar-Specific Assessments of Almond Nutritional Status through Foliar Analysis

Mediterranean almond growing is increasing, as confirmed in Italy where new orchards areas not previously interested this nut crop have been recently established. In these areas, the coastal of Latium region, knowledge eco-physiological behavior a complex interaction among cultivars, pedoclimate conditions and orchard management still poor. Optimizing fertilization strategies according to cultivar needs one main key factors guarantee high yields quality, well reduce environmental pollution. With aim, an field collection has established planting medium- late-bloom cultivars. During seasons 2019–2020, leaf samples were collected at 90 120 days after full bloom (DAFB) analyzed for biometrical traits nutrients content through foliar diagnostics. Differences nutrient depend on both phenological stage. According Pearson correlation heatmap, nitrogen showed medium–high positive with Nitrogen Balance Index (NBI) either or DAFB, highlighting reciprocal influences contents some traits. The findings study will help develop novel environmentally friendly nutrition fertigation supported by diagnostics which also consider accurate requirements.