1. Gerhard Mostert

3. Nutrient Replacement Values:
kg/ton DIS Nuts
N P K Ca Mg Zn Cu B Mn Fe
17 -22 0.5 - 2 15 - 25 15 - 20 1-3 0.2 – 0.5 0.05 – 0.08 0.2 – 0.5 0.5 - 1 0.5 - 1
kg/ 4 ton DIS Nuts
N P K Ca Mg Zn Cu B Mn Fe
80 8 80 70 12 2 0.3 2 4 4
• Cultivar
• Growth conditions
• Climate
• Water
• Soil
• Management

4. • Leaf Analysis
• Soil Analysis
• Water Analysis

6. Nitrogen (N)
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
Vegetative growth
20 % 20 % 25 % 15 % 20 %
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
1. Important for manipulation
2. Positive relation with yield
3. Negative influence on fruit size
4. Stimulate Vegetative and root flush

7. Potassium (K)
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
Vegetative growth
40 % 40 %
20 %
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
1. Important for fruit size
2. Water regulation and cold tolerance
3. Transportation of assimilates en other nutrients

8. Phosphate (P)
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
100 %
Vegetative growth
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
1. Energy
2. Mac’s very effective on P uptake

9. Calcium (Ca)
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
100 %
Vegetative growth
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
1. Fruit Quality
2. Roots

10. Magnesium (Mg)
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
100 %
Vegetative growth
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
1. Chlorophyll

11. Leaf Sprays
Flower Panicle Flowering Fruit Growth
Oil Accumulation
Root Growth
Vegetative growth
MAY JUN JUL AUG SEPT OCT NOV DEC JAN FEB MAR APR
Cu Zn Fe Zn
B Mn B
Ureum KNO3 CaNO3