Gerhard Mostert

Nutrient Replacement Values: kg/ton DIS Nuts

• Cultivar

• Growth conditions • Climate

• Water

• Soil

• Management

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

N P K Ca Mg Zn Cu B Mn Fe

80 8 80 70 12 2 0.3 2 4 4

kg/ 4 ton DIS Nuts

• Leaf Analysis

• Soil Analysis

• Water Analysis

Nitrogen (N)

25 % 20 % 20 %

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering

15 %

Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

1. Important for manipulation 2. Positive relation with yield 3. Negative influence on fruit size 4. Stimulate Vegetative and root flush

20 %

40 %

Potassium (K)

20 %

40 %

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

1. Important for fruit size 2. Water regulation and cold tolerance 3. Transportation of assimilates en other nutrients

Phosphate (P)

100 %

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

1. Energy 2. Mac’s very effective on P uptake

Calcium (Ca)

100 %

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

1. Fruit Quality 2. Roots

Magnesium (Mg)

100 %

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

1. Chlorophyll

Leaf Sprays

JAN SEPT OCT NOV DEC JUN JUL AUG MAR APR MAY FEB

Flower Panicle Flowering Fruit Growth

Oil Accumulation

Root Growth

Vegetative growth

Zn

B

Cu

Mn

Fe

Ureum KNO3 CaNO3

Zn

B