Fruit Trees

Plum

Leaf composition standards for plum trees,

based on mid-shoot leaves sampled in mid-summer.

Element
Deficient
Low
Normal
High
Excess
% N
< 1.7
1.7 - 2.3
2.4 - 3.0
3.1 - 4.0
> 4.0
% P
< 0.09
0.09 - 0.13
0.14 - 0.25
0.26 - 0.40
> 0.40
% K
< 1.0
1.0 - 1.5
1.6 - 3.0
3.1 - 4.0
> 4.0
% Ca
< 1.0
1.0 - 1.4
1.5 - 3.0
3.1 - 4.0
> 4.0
% Mg
< 0.20
0.20 - 0.29
0.30 - 0.80
0.81 - 1.10
> 1.10
% Na    
< 0.02
0.02 - 0.50
> 0.50
% Cl    
< 0.3
0.3 - 0.6
> 0.6
ppm Fe
< 60
60 - 99
100 - 250
251 - 500
> 500
ppm Cu
< 4
4 - 5
6 - 16
17 - 30
> 30
ppm Mn
< 20
20 - 39
40 - 160
161 - 400
> 400
ppm Zn
< 15
15 - 19
20 - 50
51 - 70
> 70
ppm B
< 20
20 - 24
25 - 60
61 - 80
> 80
Source of information:  Leece, D. R.  1975.  Diagnostic leaf analysis for stone fruit: 4. Plum.  Australian Journal of Experimental Agriculture and Animal Husbandry (15):112-117.
 

Apricot

Leaf composition standards for apricot trees,

based on mid-shoot leaves sampled in mid-summer.

Element
Deficient
Low
Normal
High
Excess
% N
< 1.7
1.7 - 2.3
2.4 - 3.0
3.1 - 4.0
> 4.0
% P
< 0.09
0.09 - 0.13
0.14 - 0.25
0.26 - 0.40
> 0.40
% K
< 1.0
1.0 - 1.9
2.0 - 3.5
3.6 - 4.0
> 4.0
% Ca
< 1.0
1.0 - 1.9
2.0 - 4.0
4.1 - 4.5
> 4.5
% Mg
< 0.20
0.20 - 0.29
0.30 - 0.80
0.81 - 1.10
> 1.10
% Na    
< 0.02
0.02 - 0.50
> 0.50
% Cl    
< 0.3
0.3 - 1.0
> 1.0
ppm Fe
< 60
60 - 99
100 - 250
251 - 500
> 500
ppm Cu
< 3
3 - 4
5 - 16
17 - 30
> 30
ppm Mn
< 20
20 - 39
40 - 160
161 - 400
> 400
ppm Zn
< 15
15 - 19
20 - 50
51 - 70
> 70
ppm B
< 15
15 - 19
20 - 60
61 - 80
> 80
Source of information:  Leece, D. R. and B. van den Ende.  1975.  Diagnostic leaf analysis for stone fruit: 6. Apricot.  Australian Journal of Experimental Agriculture and Animal Husbandry (15):123-128.
 

Pear

Summary of published leaf concentration standards for pear trees,

expressed in terms of mid-shoot leaves collected in mid-summer.

Element
Deficient
Low
Normal
High
Excess
% N
< 1.8
1.8 - 2.2
2.3 - 2.7
2.8 - 3.5
> 3.5
% P
< 0.10
0.09 - 0.13
0.14 - 0.20
0.21 - 0.30
> 0.30
% K
< 0.7
0.7 - 1.1
1.2 - 2.0
> 2.0
  
% Ca
< 0.8
0.8 - 1.4
1.5 - 2.1
2.2 - 3.7
  
% Mg
< 0.13
0.13 - 0.29
0.30 - 0.50
0.51 - 0.90
  
% S
< 0.10
0.10 - 0.13
0.17 - 0.26
> 0.26
  
% Na    
< 0.02
0.02 - 0.50
> 0.5
% Cl    
< 0.3
0.3 - 1.0
> 0.5
ppm Fe  
< 60
60 - 200
> 200
  
ppm Cu
< 5
5 - 8
9 - 20
21 - 50
  
ppm Mn
< 25
25 - 59
60 - 120
121 - 200
  
ppm Zn
< 10
10 - 19
20 - 50
    
ppm B
< 10
10 - 19
20 - 40
    
Source of informtion:  van den Ende, B. and D. R. Leece.  1975.  Leaf analysis for pear: development of standards and the nutritional status of orchards in the Goulburn Valley and Murrumbidgee Irrigaiton Areas.  Australian Journal of Experimental Agriculture and Animal Husbandry (15):129-135.