Tomato crop guide: Appendix II: Plant analysis guide

Nutrient Sufficiency Ranges
(source: A & L, Agronomy Handbook, Ankerman & Large, Eds.)

 

N

P

K Mg Ca  S Na B Zn Mn Fe Cu

Al

 

%

ppm

From

3.00

0.30

2.5

0.5

2.00

0.5

0.01

40

35

100

100

8

20

To

6.00

0.80

5.00

1.00

6.00

0.9

0.01

60

50

200

200

20

200

 

Plant sampling

 

Growth stage

Plant part to sample

No. of plants or leaves to sample

Open-field tomatoes

Prior to or during early bloom stage 3rd or 4th leaf from growing tip

20-25

Greenhouse tomatoes

Prior to or during fruit-set Young plants: leaves adjacent to 2ndor 3rd cluster

20-25

Older plants: leaves from 4th to 6thclusters

20-25

Need more information about how to grow tomato? You can always return to the tomato fertilizer & tomato crop guide table of contents

 

Read more about fertigation - application of nutrients through irrigation systems