Blueberries
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Crop Code No. 203

 

 

 

 

 

Blueberries

 

 Soil Groups 1, 2, 3, or 4

 

 

 

No lime recommended

Phosphorus

Potassium

 

Low

Medium

Sufficient

High

Excessive

 

Comment Numbers

Low

590

 590

590

 591

591

Medium

590

 590

590

 591

591

Sufficient

592

 592

592

 593

593

High

592

 592

592

 593

593

Excessive

592

 592

592

 593

593

COMMENTS (68, 69, 118, 590, 591, 592, 593, 594, 595, 596, 654, 655)

118   Two cups (1 pint) fertilizer is equal to approximately 1 pound.  Three-quarter pint limestone weights approximately 1 pound.

275   It may be necessary to lower the soil pH for best growth of acid-loving plants, such as blueberries.  Wettable sulfur (90% S) may be used to decrease soil pH.  The best soil pH for rabbiteye blueberries is between 4.5 and 5.5.  To lower the soil pH, apply sulfur before planting if the soil pH is above 5.5, and thoroughly mix sulfur within the soil of the planting area.  If applied around established blueberry plants, thoroughly water-in sulfur after application, taking care to wash off all above-ground plant parts.  Acid-forming fertilizers, such as those containing ammonium sulfate, can assist in lowering soil pH. For more information regarding the amount of sulfur to apply, based on soil type and soil pH, call the Clemson Home & Garden Information Center at 1-888-656-9988.  (Recommendation for Crop Codes 082 and 203 and soil pH above 5.5)

590   Prior to planting, broadcast 4 lbs triple superphosphate (0-46-0) and 3 lbs muriate of potash (0-0-60) per 1,000 square feet and mix to a depth of 6 inches.  Once planted, follow the procedures given below.  (Recommendation when phosphorus and potassium soil tests are L-L, L-M, L-S, M-L, M-M, M-S)

591   Prior to planting, broadcast 4 lbs triple superphosphate (0-46-0) per 1,000 square feet and mix to a depth of 6 inches.  Once planted, follow the procedures given below.  (Recommendation when phosphorus and potassium soil tests are L-H, L-EX, M-H, M-EX)

592   Prior to planting, broadcast 3 lbs muriate of potash 0-0-60 and mix to a depth of 6 inches. Once planted, follow the procedures given below.  (Recommendation when phosphorus and potassium soil tests are S-L, S-M, S-S, H-L, H-M, H-S, EX-L, EX-M, EX-S)

593   No phosphate or potash fertilizer is required.  Once planted, follow the procedures given below.  (Recommendation when phosphorus and potassium soil tests are S-H, S-EX, H-H, H-EX, EX-H, EX-EX)

594   Plant the blueberry bush the same depth it grew in the nursery and spread the roots apart if pot bound.

After new plants have been thoroughly watered, apply 2 tablespoons (1 ounce) 10-10-10 evenly distributed in a 19 inch diameter circle around the plant.  Fertilize at the same rate
in May and July.  In March and July of the second year, apply 2 ounces 10-10-10 evenly distributed in a 2-foot diameter circle around the plant.  In later years, each bush should
receive 1 ounce 10-10-10 for each year of age up to 6 years.  Also, increase the area the fertilizer is broadcast over.  (Recommendation when phosphorus and potassium soil tests are L-L, L-M, L-S, M-L, M-M, M-S, L-H, L-EX, M-H, M-EX, S-L, S-M, S-H, H-L, H-M, H-S, EX-L, EX-M, EX-S)

 

595   Plant the blueberry bush the same depth it grew in the nursery and spread the roots apart if pot bound.

After new plants have been thoroughly watered, apply 1 tablespoon ammonium sulfate evenly distributed in a 19 inch diameter circle around the plant.  Fertilize at the same rate in
May and July.  In March and July of the second year, apply 2 tablespoons ammonium sulfate evenly distributed in a 2-foot diameter circle around the plant.  In later years, each
bush should receive 1/2 ounce ammonium sulfate for each year of age up to 6 years.  Also, increase the area the fertilizer is broadcast over.  Avoid use of nitrate-nitrogen (such as calcium nitrate or potassium nitrate) on blueberries.  (Recommendation when phosphorus and potassium soil tests are S-H, S-EX, H-H, H-EX, EX-H, EX-EX)

596   Blueberry plants are sensitive to magnesium and may show magnesium deficiency symptoms (interveinal chlorosis on mature and older leaves).  The deficiency can be corrected by soil applying Epsom salts (magnesium sulfate) at the rate of 1/4 cup of Epsom salts evenly distributed in a 10-inch diameter circle around the plant.