Advances in micro-irrigation techniques, drip and under-tree sprinklers, have facilitated more widespread adoption of fertigation, especially for perennial crops, including citrus. It is well known that fertigation improves nutrient uptake efficiency. Therefore, is preferable to dry fertilizer broadcast application because it increases the yield, enhances crop quality, and minimizes loss of nutrients, i.e., leaching of NO3-N below the root zone.
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