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Pioneering the Future

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Fertilization of cabbage and cauliflower in open field

A thorough fertilization program in open field growing conditions, using Haifa's fertilizers

 

Growing medium: Open field.
Soil type: Light soil.
Plant population: 30,000-40,000 Plants/Ha.
Expected yield: 20-30 T/Ha.

 

 

 

Recommended average rates of nutrients for open field Cabbage and Cauliflower (Kg/Ha):

 

N

P2O5

K2O

120-160

50-100

180-200

 

 

Phosphate - The demand for P is greater during the head formation.
Potassium - K deficiency can result in marginal necrosis and lower head quality.
Magnesium - In case of Mg deficiency it is recommended to supply 50-70 Kg/Ha Magnisal.

 

 

 

Fertigation:

 

Growth stage

Requirement nutrients

Recommended fertilizers 

N

P2O5

K2O

Multi-K

AN

Phosph. acid

-------- Kg/Ha/Day --------

--- Kg/Ha/Day ---

L/Ha/Day

Planting - 45 days

1.013

1.14

1.08

2.3

2.1

1.2

46-70 days

3.33

1.36

3.73

8.1

7.0

1.5

71- harvest

0.74

0.32

0.84

1.8

1.5

0.3

 

 

AN = Ammonium Nitrate (34% Nitrogen).
Multi-K = Potassium Nitrate (13-0-46).

 

 

 

Macro elements removed by 1 ton marketable product

 

N

P

K

Ca

Mg

S

---------------------------------------------------Kg / ton-----------------------------------------

2-6

0.3-0.9

3-6

1.0

0.4

0.7

 

 

Source: Kinoch: VOLHOUBARE LANDBOU, RSA. Processed by Frans Lourens, Haifa, RSA May, 1999.

 

 

 

Plant analysis guide

Nutrient sufficiency ranges (source: A & L, Agronomy Handbook, Ankerman & Large Eds.)

 

Field crops *

 

 

Crops

N

S

P

K

Mg

Ca

Na

B

Zn

Mn

Fe

Cu

Al

Mo

-------------------- % --------------------

------ p.p.m --------

Head crops From

2.50

0.30

0.40

3.50

0.30

1.50

0.01

25

25

50

50

5

20

 
To

4.50

1.50

1.00

5.00

0.50

2.50

0.10

50

45

100

200

10

200

 

 

 

 

 

Plant part to sample

 

time of sampling: At heading
Plant part: Midrib of wrapper leaf

 

 

 

 

Plant tissue sampling procedures

 

Stage of growth Plant part
Before heading Young mature leaf from center of whorl

 

 

 

 

Cabbage – Mineral analysis values

 

 

Leaves

Nutrient

Average value

Critical level

 

(%)

N

3.30

 

S

1.05

 

P

0.63

 

K

4.80

 

Mg

0.36

 

Ca

2.10

 

Na

0.07

 
 

(ppm)

Fe

185

 

Al

180

 

Mn

70

 

B

40

 

Cu

8

 

Zn

38

 

Mo