Abstract: Advances in micro-irrigation techniques, e.g., drip and under-tree sprinklers, have facilitated more widespread adoption of fertigation, especially for perennial crops, including citrus. It is generally believed that fertigation improves nutrient yptake efficiency and, therefore, is preferable to dry fertilizer broadcast application because in increases the yield, enhances crop quality, andminimizes loss of nutrients, i.e., leaching of NO3-N below the root zone. The evaluation of tree response to changes in nutrient management requires long-term studies because of the large nutrient reserves in the woody portion of the tree. In this paper we have summarized recent evaluations of fertigation for citrus.
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