Nitrogen Uptake Efficiency of Olive Cultivars

Maximizing nitrogen uptake efficiency is a sustainable objective to reduce the amount of fertilizers applied in olive orchards. Many factors affect this parameter, but nothing known about whether there are differences among cultivars related olive, and if interactions with soil type. To clarify these questions, two groups experiments were conducted. In first group, four carried out which 20 compared. second three study interaction type soil. all experiments, mist-rooted cuttings growing 1.1 L pots containing mixture sand peat (2:1 by volume). Depending on experiment, plants placed shadehouse or growth chambers at 25/15 °C (day/night) 14 h photoperiod 70% humidity. Plants received weekly applications 100 ppm N throughout irrigation water, alternating one 150 mL tap water. Some each cultivar did not receive served as control for NUE calculation. A nutrient solution without was every weeks prevent nutritional deficiencies. Results indicated that nitrogen. The Spanish ‘Picual’, ‘Arbequina’ ‘Manzanilla de Sevilla’, together Greek ‘Koroneiki’ Italian ‘Frantoio’, high work. Soil NUE, no between observed.