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Διαφυλλική θρέψη των εσπεριδοειδών: Όλα τα οφέλη από τη χρήση των λιπασμάτων της Haifa
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Διαφυλλική θρέψη των εσπεριδοειδών: Όλα τα οφέλη από τη χρήση των λιπασμάτων της Haifa
Boost yield, reduced fruit drop and splitting and increased fruit size – those are just some the advantages using Multi-K™
Plant Density : 350 – 425 tree/Ha.
Type of soil : Medium – Heavy.
Expected yield : 65 – 85 MT/Ha.
Nutrient removal in a ton of fresh fruit (Chapman, 1968)
Variety |
Grams per ton of fresh fruit |
|||||
---|---|---|---|---|---|---|
N |
P2O5 |
K2O |
MgO |
CaO |
S |
|
Orange |
1,773 |
506 |
3,194 |
367 |
1,009 |
142 |
Mandarin |
1,532 |
376 |
2,465 |
184 |
706 |
111 |
Lemon & Lime |
1,638 |
366 |
2,086 |
209 |
658 |
74 |
Grapefruit |
1,058 |
298 |
2,422 |
183 |
573 |
90 |
Foliar feeding recommendations for citrus
Time of application | Suggested fertilizers | Rate (%) | No. of applic. | Intervals |
---|---|---|---|---|
Flushing – maturing leafs | Multi-fert 8-52-17 |
0.5 |
3 - 5 |
10 days |
Flowering initiation | Multi-K™ |
2 |
3 - 4 |
Weeks |
Late blooming | Multi-K |
1 - 2 |
1 - 2 |
Weeks |
After fruit set | Poly-Feed 19-19-19 |
1 -2 |
6 - 8 |
10 days |
Fruit development By alternately | Multi-K |
2 |
4 - 6 |
10 days |
Multi-fert 22-11-22 |
1 - 2 |
4 - 6 |
10 days | |
2-2.5 month before harvesting | Multi-K or Poly-K 13-5-42 |
2 |
2 - 3 |
15 days |
2 |
2 - 3 |
15 days | ||
1.5 month after harvest-flushing | Magnisal 11-0-0+16 |
0.6 |
2 - 4 |
Week |
Multi-K = 13-0-46 (Potassium nitrate)
Citrus trees benefit from Haifa’s products: boost yield, reduced fruit drop & splitting, increased fruit size, increased sweetness, extended fruit shelf life.
Foliar spraying with Multi-K™
Treatment |
Multi-K (kg)/applic. |
Conc. (%) |
Spray vol. (L/Ha) |
Application time |
No. of sprays |
---|---|---|---|---|---|
Nutrition |
12-16 |
4 |
300-400 |
Spring |
1-3 |
To increase fruit size |
12-15 |
4-5 |
300 |
Spring-Summer |
1-2 |
To reduce fruit drop |
12-16 |
4 |
300-400 |
After fruit-set |
2-4 |
To reduce splitting and creasing |
12-16 |
4-6 |
300-400 |
Spring-Summer |
3-4 |
To supress the population of Floarida wax |
4-16 |
4 |
100-400 |
Spring-Summer |
1-2 |
Fertilization schedule
Fertilizer |
Application time |
Application no. |
Total amount |
---|---|---|---|
Multi-K | Spring to early summer |
weekly |
400-650 Kg/Ha |
Ammonium Nitrate | During the season |
weekly |
400-600 Kg/Ha |
MonoAmmonium Phosphate | Spring |
1-2 |
100 Kg/Ha |
In case of magnesium dificiency it is recommended to spray with 2% Magnisal (Haifa's magnesium nitrate 10.5-0-0+15MgO in early spring.
This fertilization program should be adjusted according to leaf analysis.
Foliar feeding of young lemon trees with Multi-K (potassium nitrate)
Best source for K and N is Multi-K (potassium nitrate) which is fully soluble, has no detrimental chloride, and in which the uptake of K is synergistic with the nitrogen. Moreover, Multi-K helps to avoid salinity toxicity when the soil and/or the irrigation water are high in sodium and/or chloride.
No. of applications /year |
Rate (%) |
Spray volume (Lit./ha) |
pH of spray solution |
Interval between treatments |
---|---|---|---|---|
6 - 7 |
4 - 6 |
100 - 400 |
5.5 - 6.5 |
15 - 21 days |
Please note:
- Please conduct appropriate experiments on a small scale before practicing it on a commercial basis.
- Please avoid spraying when the trees are under any sort of stress (water-logging, drought, heat, spraying of mineral oils, etc.).
- Spraying at these concentrations will not harm the flowering, which is also not so important until the trees are 4 years of age. Therefore, sprayings can be done regardless of the flowering waves.
- When pH is maintained as shown in the table this application can be combined with pesticides.
- When the trees are older and are bearing fruit regularly, if larger fruit gets a premium price it might be beneficial to spray the trees with Multi-K pHast, as shown in the table. This should be adopted as a commercial practice. Best timing for spraying at the fruit-bearing stage is when the fruitlets are 1-1.5 cm large. And, again, please conduct appropriate experiments on a small scale before practicing it on a commercial basis.
Citrus – foliar nutrient norms
Nutrient | Normal | Above normal | Toxic | Below normal | Deficiency |
---|---|---|---|---|---|
(%) |
|||||
N |
2.4 – 2.5 |
2.5 – 2.8 |
> 2.8 |
1.8 – 2.3 |
< 1.7 |
P |
0.11 – 0.14 |
0.15 – 0.17 |
> 70.18 |
0.08 – 0.09 |
< 0.08 |
K |
0.9 – 1.5 |
1.5 – 1.8 |
> 71.8 |
0.59 – 0.6 |
< 0.59 |
Ca |
3.5 – 6.0 |
7.60 |
- |
2.5 – 3.5 |
< 2.4 |
Mg |
0.35 – 0.5 |
0.5 – 0.75 |
- |
0.25 – 0.35 |
< 0.24 |
(ppm) |
|||||
Cu |
5 – 20 |
20 – 40 |
> 740 |
4 |
< 3 |
Fe |
60 – 150 |
- |
- |
- |
- |
Mn |
40 – 150 |
250 |
> 7250 |
25 |
< 25 |
Zn |
25 – 100 |
200 |
> 7200 |
15 |
< 15 |
B |
40 – 200 |
300 |
> 7300 |
20 |
< 20 |
Need more information about growing citrus? You can always return to the citrus tree fertilizer & citrus crop guide table of contents
Τα τελευταία νέα από την Haifa
Το ενημερωτικό δελτίο της Haifa σας παρέχει πληροφορίες σχετικά με τη προηγμένη θρέψη των φυτών,
και παρέχει τα τελευταία νέα που θα πρέπει να γνωρίζετε για τις καλλιέργειες σας.