Fertigation Trials in Almond

Apparent nitrogen use efficiencies per treatment, calculated as the ratio of removed/applied N ranged from 61% in the highest N treatment to 136% in the lowest N treatment. Nutrient use efficiencies of >100% suggest that trees are mobilizing stored nutrients rather than depending exclusively on fertilizer applied in that season. Over the long term, this must result in tree and soil N depletion and contribute to yield decline. Fuente: Division of Agriculture and Natural Resources, University of California País: California, Estados Unidos