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.
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.
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 |
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 |
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 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 |
|
|