Symptoms
Deficiency symptoms are visible on younger leaves first.They are smaller in size, but generally show no color change apart from slight chlorosis. The leaf tips are cupped, distorted and scorched.
Reasons
Copper deficiency.
Deficiencies are more common on organic (peat) or sandy soils and where excessive nitrogen rates have been applied. Cu ist not very mobile in the soil and may be strongly adsorbed by soil particles, so deficiencies may occur on shallow calcareous soils with a pH>7.
Adequate values for leaf analysis are supposed to be between 8 to 12 ppm.
Cocoa - Deformation
Symptoms
Deficiency symptoms are visible on younger leaves first.They are smaller in size, but generally show no color change apart from slight chlorosis. The leaf tips are cupped, distorted and scorched.
Reasons
Copper deficiency.
Deficiencies are more common on organic (peat) or sandy soils and where excessive nitrogen rates have been applied. Cu ist not very mobile in the soil and may be strongly adsorbed by soil particles, so deficiencies may occur on shallow calcareous soils with a pH>7.
Adequate values for leaf analysis are supposed to be between 8 to 12 ppm.
