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Supplying the avocado tree with the precise amount of fertilizers

Our fertilization recommendation for growing fertile avocado trees in Israel and South Africa

Soil type: light to medium.
Plant density:  400-600 Trees / ha.
Expected yield: 10 -20 t/ha.

The recommended average rates of nutrients (Kg/ha).

 

N

P

P2O5

K

K2O

150-250

25-40

57-90

170-290

205-350

 

These rates should be split as follows:
I. Early spring

  • 50 kg N/ha, it can be applied as 2-3 applications of:
     ammonium nitrate, totaling 150 kg/ha, or urea, totaling 110 kg/ha.
  • Half the annual rate of the P, as 2-3 applications of:
    Haifa P, totaling 67 L/ha, or MAP, totaling 50 kg/ha.

II. During the active growth season
Nitrogen (100-200 Kg N/ha) is best applied in 8 - 10 applications by fertigation in the form of ammonium nitrate (or urea) and Multi-K.
Potassium - all potassium should be supplied as Multi-K (KNO3) in five monthly applications.

III. Autumn
Half the annual rate of the P, as 2-3 applications of:
Haifa P, totaling  67 L/ha, or  MAP, totaling 50 kg/ha.

 

Annual program

Fertilizer

Applications

Total
Amount

Time

No.

Ammonium nitrate

Spring

2-3

150 Kg/Ha

Multi-K

Active growth season

5

450-750 Kg/Ha

Ammonium Nitrate

Active growth season

8-10

120-300 Kg/Ha

Haifa P

Spring and Autumn

2

134 L/Ha

 

 

Multi-K - 13% N and 46% K2O (38% K).
Ammonium nitrate - 34% N.
Ammonium Sulphate - 21% N.
MAP= mono-ammonium phosphate (12-27-0).
Haifa P= phosphoric acid, 85%, 0-61-0.

 

 

 

 

Plant analysis guide

nutrient sufficiency ranges (in D.M.).
(source: A & L, Agronomy Handbook, Ankerman & Large Eds.)

 

Avocado

N

S

P

K

Mg

Ca

Na

B

Zn

Mn

Fe

Cu

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

---------- ppm -----------

From

1.60

0.20

0.10

1.00

0.30

1.00

0.01

50

30

30

50

5

To

2.20

0.60

0.25

2.00

0.80

3.00

0.15

100

50

80

150

15