Apples
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Crop Code No. 205

 

 

 

 

 

Apple Trees

 

 Soil Groups 1, 2, 3, or 4

 

 

 

Desired pH 6.0 – 6.5

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, 535, 590, 591, 592, 593, 598, 654, 655)

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

535      Broadcast dolomitic limestone as recommended, either in the fall or early spring.

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, S-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.  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)

598   About one month after planting, broadcast over a 2-foot circle 1 cup 10-10-10 fertilizer.  In June following planting, broadcast another cup 10-10-10 around the tree.  In early spring of the second season, broadcast 2 cups 10-10-10 over a three-foot circle. Repeat the application again in June.  In succeeding years, the following guidelines for the different trees are:

Standard trees: Increase the diameter of the broadcast circle and the amount of 10-10-10 fertilizer by 2 cups per year.  When the tree is 6 years old or older, only nitrogen fertilizer is needed.  Apply 4 cups 34-0-0 per tree for trees 6 to 8 years old and 1/2 cups for trees 9 years old and older.

Semi-dwarf trees: Increase the diameter of the broadcast circle and the amount of 10-10-10 fertilizer by 2 cups per year.  Once the trees reach 4 years of age, apply 8 cups 10-10-10 per tree.  Apply this amount in years 5 through 7.  For trees 8 years old or older, apply 4 cups 34-0-0 fertilizer per tree.

Dwarf trees: During the third and fourth season, broadcast over a 4-foot circle 4 cups 10-10-10 fertilizer around each tree each year.  Trees in their fifth and sixth seasons should receive 6 cups 10-10-10 per tree broadcast over a 5-foot diameter circle.  Seven year old or older trees should receive only nitrogen at a rate of about 2 cups 34-0-0) per tree.  Broadcast this over a 5-foot diameter area.

Once the trees begin to bear, use shoot growth as a measure to determine need to either reduce or supplement the fertilization rates previously suggested.  Ten to 16 inches of growth are ideal for bearing trees.  If growth is greater than this, reduce the rate of fertilization.  If growth is less, apply a little extra fertilizer the next season.

CAUTION: When fertilizing, never dump large amounts in a small area.  Root bum may result.  Also, keep fertilizer 6 inches or more away from the trunk.  Always broadcast the fertilizer evenly over the recommended area.

If in any given year, the trees are severely pruned, do not apply any fertilizer that year.  Likewise, if growth is excessive, omit fertilizer for a year or two until growth is reduced to a desirable terminal growth on bearing trees averaging 10 to 16 inches per year.

If soil test magnesium level is low and lime recommended, use dolomitic limestone.