Plant Tissue Sampling Guidelines and Mineral Sufficiency Ranges for Vegetable Crops

ASPARAGUS

Sampling Guideline: Mature fern from 18 to 36 inches at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.40-3.80 0.30-0.35 1.50-2.40 0.40-0.50 0.15-0.20

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

Zn Cu Mn Fe B

20-60 6-11 10-160 40-70 50-100

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.40-3.80	0.30-0.35	1.50-2.40	0.40-0.50	0.15-0.20

----------ppm----------
Zn	Cu	Mn	Fe	B
20-60	6-11	10-160	40-70	50-100

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BEET

Sampling Guideline: Youngest mature leaves from the mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.50-5.00 0.20-0.30 2.00-4.00 2.50-3.50 0.30-0.80

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

Zn Cu Mn Fe B

15-30 70-200 60-80

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.50-5.00	0.20-0.30	2.00-4.00	2.50-3.50	0.30-0.80

----------ppm----------
Zn	Cu	Mn	Fe	B
15-30		70-200		60-80

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BROCCOLI

Sampling Guideline: Youngest mature leaves at heading.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.20-5.50 0.30-0.70 2.00-4.00 1.20-2.50 0.23-0.40

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

Zn Cu Mn Fe B

45-95 1-5 25-150 100-300 30-100

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.20-5.50	0.30-0.70	2.00-4.00	1.20-2.50	0.23-0.40

----------ppm----------
Zn	Cu	Mn	Fe	B
45-95	1-5	25-150	100-300	30-100

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BRUSSELS SPROUT

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.20-4.20 0.26-0.45 2.40-3.40 0.30-2.20 0.23-0.40

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

Zn Cu Mn Fe B

20-80 3-10 20-120 50-150 30-40

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.20-4.20	0.26-0.45	2.40-3.40	0.30-2.20	0.23-0.40

----------ppm----------
Zn	Cu	Mn	Fe	B
20-80	3-10	20-120	50-150	30-40

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CABBAGE

Sampling Guideline: Young wrapper leaf when head is half grown.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-4.00 0.30-0.50 3.00-4.00 1.50-3.50 0.25-0.45

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

Zn Cu Mn Fe B

20-30 5-20 25-60 30-60 30-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-4.00	0.30-0.50	3.00-4.00	1.50-3.50	0.25-0.45

----------ppm----------
Zn	Cu	Mn	Fe	B
20-30	5-20	25-60	30-60	30-60

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CANTALOUPE

Sampling Guideline: Youngest mature leaves prior to or at initial fruit set.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.00-3.00 0.25-0.40 1.80-2.50 5.00-7.00 1.00-1.50

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

Zn Cu Mn Fe B

30-50 4-25 20-200 30-200 30-80

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.00-3.00	0.25-0.40	1.80-2.50	5.00-7.00	1.00-1.50

----------ppm----------
Zn	Cu	Mn	Fe	B
30-50	4-25	20-200	30-200	30-80

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CAULIFLOWER

Sampling Guideline: Youngest mature leaves without stem at buttoning.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-4.50 0.54-0.72 3.00-3.70 0.72-0.79 0.24-0.26

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

Zn Cu Mn Fe B

43-59

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-4.50	0.54-0.72	3.00-3.70	0.72-0.79	0.24-0.26

----------ppm----------
Zn	Cu	Mn	Fe	B
43-59

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COLLARD

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

4.00-5.00 0.30-0.60 3.00-4.00 0.45-1.00 3.00-4.00

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

Zn Cu Mn Fe B

20-70 3-10 40+ 40-100 50-80

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
4.00-5.00	0.30-0.60	3.00-4.00	0.45-1.00	3.00-4.00

----------ppm----------
Zn	Cu	Mn	Fe	B
20-70	3-10	40+	40-100	50-80

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CUCUMBER

Sampling Guideline: Fifth leaf from the tip prior to or at fruit set.

Sufficiency Ranges
----------%----------

N P K Ca Mg

4.00-6.00 0.30-0.60 2.25-4.00 1.25-3.50 0.30-0.60

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

Zn Cu Mn Fe B

60-150 20-30 60-90 30-300 30-80

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
4.00-6.00	0.30-0.60	2.25-4.00	1.25-3.50	0.30-0.60

----------ppm----------
Zn	Cu	Mn	Fe	B
60-150	20-30	60-90	30-300	30-80

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GREEN BEAN

Sampling Guideline: Uppermost mature leaves prior to or at early bloom.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-6.00 0.25-0.50 1.80-2.50 0.80-3.00 0.25-0.70

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

Zn Cu Mn Fe B

30-60 15-30 30-300 300-450 40-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-6.00	0.25-0.50	1.80-2.50	0.80-3.00	0.25-0.70

----------ppm----------
Zn	Cu	Mn	Fe	B
30-60	15-30	30-300	300-450	40-60

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KALE

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

4.00-5.00 0.30-0.60 3.00-4.00 3.00-4.00 0.45-1.00

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

Zn Cu Mn Fe B

20-70 3-10 40+ 25-45

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
4.00-5.00	0.30-0.60	3.00-4.00	3.00-4.00	0.45-1.00

----------ppm----------
Zn	Cu	Mn	Fe	B
20-70	3-10	40+		25-45

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LETTUCE

Sampling Guideline: Mature bottom leaves at base of plant at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.50-4.00 0.20-1.50 3.50-8.00 1.30-4.00 0.30-0.80

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

Zn Cu Mn Fe B

30-200 5-30 30-400 100-800 18-150

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.50-4.00	0.20-1.50	3.50-8.00	1.30-4.00	0.30-0.80

----------ppm----------
Zn	Cu	Mn	Fe	B
30-200	5-30	30-400	100-800	18-150

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ONION

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

1.50-2.50 0.25-0.40 2.45-4.65 0.60-0.80 0.11-0.25

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

Zn Cu Mn Fe B

10-15 5-15

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
1.50-2.50	0.25-0.40	2.45-4.65	0.60-0.80	0.11-0.25

----------ppm----------
Zn	Cu	Mn	Fe	B
10-15				5-15

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PEAS

Sampling Guideline: Entire top growth at bud to full bloom.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.10-3.60 0.30-0.35 2.20-2.80 1.20-1.50 0.27-0.35

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

Zn Cu Mn Fe B

20-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.10-3.60	0.30-0.35	2.20-2.80	1.20-1.50	0.27-0.35

----------ppm----------
Zn	Cu	Mn	Fe	B
20-60

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PEPPERS (BELL)

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-4.50 0.30-0.70 4.00-5.40 1.00-1.70 0.40-0.60

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

Zn Cu Mn Fe B

25-80 10-20 30-100 30-300 20-55

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-4.50	0.30-0.70	4.00-5.40	1.00-1.70	0.40-0.60

----------ppm----------
Zn	Cu	Mn	Fe	B
25-80	10-20	30-100	30-300	20-55

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POTATO (IRISH)

Sampling Guideline: Youngest mature leaves when tubers are half grown.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-5.00 0.20-0.40 4.00-8.00 2.00-4.00 0.50-0.80

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

Zn Cu Mn Fe B

20-40 6-20 30-50 70-150 30-40

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-5.00	0.20-0.40	4.00-8.00	2.00-4.00	0.50-0.80

----------ppm----------
Zn	Cu	Mn	Fe	B
20-40	6-20	30-50	70-150	30-40

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SPINACH

Sampling Guideline: Youngest mature leaves at mid-growth.

Sufficiency Ranges
----------%----------

N P K Ca Mg

4.00-6.00 0.30-0.50 3.00-4.00 1.60-1.80 0.60-1.00

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

Zn Cu Mn Fe B

50-75 5-7 30-60 220-245 40-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
4.00-6.00	0.30-0.50	3.00-4.00	1.60-1.80	0.60-1.00

----------ppm----------
Zn	Cu	Mn	Fe	B
50-75	5-7	30-60	220-245	40-60

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SWEET CORN

Sampling Guideline: Ear leaves at tasseling.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.60-3.50 0.20-0.30 1.80-2.50 0.20-0.30 0.15-0.30

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

Zn Cu Mn Fe B

20-60 5-20 20-300 50-250 5-30

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.60-3.50	0.20-0.30	1.80-2.50	0.20-0.30	0.15-0.30

----------ppm----------
Zn	Cu	Mn	Fe	B
20-60	5-20	20-300	50-250	5-30

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TOMATO (FIELD)

Sampling Guideline: Mid-growth of mature fern from 18 to 36 inches.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.00-6.00 0.20-1.50 3.50-6.00 2.50-5.00 0.43-0.86

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

Zn Cu Mn Fe B

30-150 5+ 30-400 30-300 30-100

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.00-6.00	0.20-1.50	3.50-6.00	2.50-5.00	0.43-0.86

----------ppm----------
Zn	Cu	Mn	Fe	B
30-150	5+	30-400	30-300	30-100

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TOMATO (GREENHOUSE)

Sampling Guideline: Leaves from 4th to 6th clusters at or prior to fruit set.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.50-4.00 0.50-1.00 3.50-5.00 0.90-1.80 0.50-1.00

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

Zn Cu Mn Fe B

20-100 8-20 50-500 50-300 35-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.50-4.00	0.50-1.00	3.50-5.00	0.90-1.80	0.50-1.00

----------ppm----------
Zn	Cu	Mn	Fe	B
20-100	8-20	50-500	50-300	35-60

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TURNIP GREEN

Sampling Guideline: Youngest mature leaves at mid-season.

Sufficiency Ranges
----------%----------

N P K Ca Mg

3.50-4.50 0.35-0.60 3.00-5.00 1.50-3.00 0.40-0.80

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

Zn Cu Mn Fe B

20-70 3-10 30-100 80-370 30-60

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
3.50-4.50	0.35-0.60	3.00-5.00	1.50-3.00	0.40-0.80

----------ppm----------
Zn	Cu	Mn	Fe	B
20-70	3-10	30-100	80-370	30-60

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WATERMELON

Sampling Guideline: Youngest mature leaves near tip prior to or at fruit set.

Sufficiency Ranges
----------%----------

N P K Ca Mg

2.00-3.00 0.20-0.30 2.20-3.50 1.10-2.50 0.25-0.50

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

Zn Cu Mn Fe B

20-50 4-8 20-200 30-300 20-40

Sufficiency Ranges
----------%----------
N	P	K	Ca	Mg
2.00-3.00	0.20-0.30	2.20-3.50	1.10-2.50	0.25-0.50

----------ppm----------
Zn	Cu	Mn	Fe	B
20-50	4-8	20-200	30-300	20-40

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