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
Variety	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
Fruit development By alternately	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
2-2.5 month before harvesting	Multi-K or Poly-K 13-5-42	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