Fertilizer Advice-Fruit Trees

Per Citrus Grove’s soil test in July 2019

  • Per 1,000 sq. ft. apply 8 pounds 0-14-14 or equivalent. Apply N for individual trees or plants as recommended below. [A pint of dry fertilizer is approximately 1 pound.]
    • Peaches, plums, pecans: Apply 0.16 pounds N (1/2 pound 34-0-0 or equivalent) per plant per year of age up to a maximum of 1.0 pound N per tree for peaches, 0.8 pounds N per tree for plums, and 10 pounds N per tree for pecans.
    • Pears: Apply 0.06 pound N (0.2 pounds 34-0-0 or equivalent) per tree per year of age up to a maximum of 0.56 pound N per tree.
    • Blueberries: apply 0.02 pounds N (0.1 pounds ammonium sulfate) per plant per year of age up to a maximum of 0.14 pounds N per plant. Split into two applications—one in February and one in June or after harvest. Ammonium N sources are recommended for blueberries. Do not lime for blueberries.

From IFAS here, page 48, for Citrus Trees.

  • Nutrient management: Applying fertilizer in several small doses increases fertilizer efficiency because it maintains more constant N availability and reduces leaching potential. A minimum of 4 to 6 annual applications of dry fertilizer is recommended for young trees.
  • Fertilizer rates for trees during the first 3 years in the grove are calculated on a per tree basis. For example, if a 2-year old tree is scheduled to receive 0.4 lbs N per tree per year in four equal applications, then 0.1 lbs N will be applied each time. Using a fertilizer containing 10% N, the tree will receive 1.0 lb of fertilizer per application.

Meyer Lemons from here.

Fertilize regularly when growing Meyer lemons. A high nitrogen fertilizer, such as one designed for citrus trees, is best fed monthly between April and September. Withhold fertilizer during autumn and winter months. Yellowing leaves indicate the need for either water or fertilizer.

Blood Orange

Give it 1 cup of 21-0-0 ammonium sulfate each year. The formula is one cup of ammonium sulfate for every year of its life. Secondly, give it a phosphate boost every few years. Carefully follow the directions that come with the tree to get the balance right. From here.

Feed three to four times a year with an organic fertilizer, working it into the soil around the tree and watering in well or using a liquid fertilizer according to the manufacturer’s instructions every second or third watering. Blood orange trees require plenty of iron, manganese, and zinc to produce healthy fruit, so don’t be stingy with the feeding. Yellow leaves may indicate a lack of fertilization or overwatering. From here.

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