Grapes
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Crop Code No. 204

 

 

 

 

 

Grapes

 

 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, 597, 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, 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 procedures given below.  (Recommendation when phosphorus and potassium soil tests are S-H, S-EX, H-H, H-EX, EX-H, EX-EX)

597  After new plants have been thoroughly watered and before growth begins, apply 1/2 cup 10-10-10 fertilizer around each plant.  Keep the fertilizer at least 6 inches from the trunk.
Repeat at monthly intervals until mid­ July.  On two-year old vines, double the first year rate and use the same monthly intervals. Bearing vines will need from 1 to 4 lbs 10-10-10
per plant applied in March.  If growth is poor on producing vines, apply 1 lb 10-10-10 per plant in May.  Some South Carolina soils are inherently low in magnesium and foliar
magnesium deficiency frequently becomes noticeable in mid-summer.  This deficiency is characterized by a yellowing between the leaf veins on mature and older leaves. If the
soil pH is sufficiently low to warrant liming, use dolomitic limestone to help prevent magnesium deficiency in future years.  Otherwise, Epsom salts (magnesium sulfate) should be
applied and watered in.  For young plant, apply 1/4 cup Epsom salts around each vine, keeping the material 6 or more inches away from the trunk.  Apply 1/2 to 1 cup Epsom salts per mature, bearing vine.  It may require 2 to 3 years of magnesium application to increase the level sufficiently for best plant performance.