Table 3 gives suggested amounts of nitrogen to inject into a drip or irrigation system. Dry fertilizer should be applied evenly within the irrigation pattern for each tree irrigated by a low-volume system. This will occur naturally if fertilizer is applied through the irrigation system. If irrigation is sprinkler-applied over a large portion of the orchard floor, broadcast the fertilizer just before a rain or irrigation, The suggested amounts in Table 3. may require adjustments determined by leaf analysis after coming into commercial bearing. Suggested Amounts of Nitrogen to Inject Into a Drip or Sprinkler Irrigation System Grove Age Lbs.
Some avocado varieties come into commercial bearing at a younger age.