For more details see “Reference Sufficiency Ranges for Plant Analysis in the Southern Region of the United States, SCSB #394, R. Campbell.”
Reference Sufficiency Ranges
Agronomic Crops
Alfalfa (50) – Sample the top 4 to 6 inches of the plant prior to or at 1/10 bloom stage. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-5.00 |
0.25-0.70 |
2.00-3.50 |
0.80-3.00 |
0.25-1.00 |
0.25-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-250 |
25-100 |
20-70 |
4-30 |
20-80 |
Bahiagrass (33) – Sample top 4-6 inches of plant.Take leaves from 50 plants for one sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-20 |
5-15 |
Coastal Bermuda (34) – Sample the upper half of the plant prior to seed head formation. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.20-0.40 |
1.50-2.30 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
15-70 |
4-20 |
5-15 |
Canola (02) – Sample the uppermost recently mature leaf blades prior to flowering Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-6.00 |
0.42-0.69 |
3.50-5.10 |
2.10-3.00 |
0.15-0.62 |
0.65-0.90 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
100+ |
30-250 |
33-49 |
5-25 |
25-54 |
Corn (20) – Seedling (<4 inches in height)
Whole plant should be collected by cutting 1 inch above the soil surface.Depending on size, 15 to 20 plants are adequate for a sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.40-0.60 |
3.00-4.00 |
0.30-0.80 |
0.20-0.60 |
0.18-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
40-250 |
25-160 |
20-60 |
6-20 |
5-25 |
The earleaf is the best indicator sample.This is the leaf adjacent to the uppermost developing ear.Ten leaves are adequate for a sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.80-4.00 |
0.25-0.50 |
1.80-3.00 |
0.25-0380 |
0.15-0.60 |
0.15-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-250 |
15-150 |
20-70 |
5-25 |
5-25 |
Cotton (01) – Leaf blade at early bloom
Sample the uppermost, mature cotton leaf blade on the vegetative stem.Discard the petiole.(Note:some research has included both leaf blade and petiole.)This is usually the 3rd to 5th leaf from the terminal. Sample during the period of one week before to one week after first bloom. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-4.50 |
0.20-0.65 |
1.50-3.00 |
2.00-3.50 |
0.30-0.90 |
0.25-0.80 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-250 |
25-350 |
20-200 |
5-25 |
20-80 |
Fescue, Tall (31) – Samples should be collected every five to six weeks during growing season before flowering. style="mso-spacerun: yes"> Collect above ground portion of 20 plants. Return to top.
|
N(%) |
P(%) |
K(%) |
|
2.80-3.80 |
0.26-0.40 |
2.50-3.50 |
Grain Sorghum (25) – Flowering or at Heading
Sample second leaf from the top of the plant.This is the recommended sampling procedure when determining the nutrient status of the treatments and yield. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.50-4.00 |
0.20-0.35 |
1.40- |
0.30-0.60 |
0.20-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
65-100 |
8-100 |
12-100 |
2-7 |
1-10 |
Orchardgrass (32) – Sample top 4-6 inches of plant.Take leaves from 50 plants for one sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-700 |
4-20 |
5-15 |
Peanut (08) – All Growth Stages
The most recent mature trifoliate is the best indicator sample.A total of 15 to 20 trifoliates are required for a representative sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.50-4.50 |
0.20-0.50 |
1.70-3.00 |
0.50-2.00 |
0.30-0.80 |
0.20-0.35 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-250 |
20-350 |
20-60 |
5-20 |
20-60 |
Small Grain (Barley, Oats, Rye, Wheat) (29) – Seedling to Tillering
Whole plants should be collected by cutting 1 inch above the soil surface.After collecting subsamples from several locations in a field, clippings should be combined for a representative sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.20-0.50 |
2.50-5.00 |
0.20-1.00 |
0.14-1.00 |
0.15-0.65 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-200 |
20-150 |
18-70 |
4.5-15 |
1.5-4 |
The most recently matured leaf blades are collected for subsequent analysis. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.25-5.00 |
0.30-0.60 |
1.50-2.25 |
0.80-1.40 |
0.25-0.70 |
0.25-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
25-300 |
17-100 |
21-80 |
4-30 |
20-60 |
Themost recent mature of fully expanded leaf is the best indicator of nutritional status.This is the first leaf back from the growing point that is fully developed – generally the 4th or 5th leaf back from the bud. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.50-4.50 |
0.20-0.50 |
2.50-3.50 |
0.75-1.50 |
0.20-0.60 |
0.15-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-300 |
20-250 |
20-60 |
5-10 |
18-75 |
Vegetable Crops
Asparagus (51) – Sample the mature fern from 18-36 inches at mid-growth. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.40-3.80 |
0.20-0.35 |
1.50-2.40 |
0.40-0.50 |
0.15-0.20 |
|
Mn(ppm) |
Zn(ppm) |
B(ppm) |
||
|
10-160 |
20-60 |
50-100 |
Beets (60) – Sample the young mature leaf at mid-growth.Take 3 leaves per plant. Return to top.
|
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 |
|
Mn(ppm) |
Zn(ppm) |
B(ppm) |
||
|
70-200 |
15-30 |
60-80 |
The most recently matured leaves should be sampled at heading. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-4.50 |
0.30-0.50 |
1.50-4.00 |
1.20-2.50 |
0.23-0.40 |
0.20 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
40-300 |
25-150 |
45-90 |
5-10 |
30-50 |
Brussel Sprouts (43) – Sample the young mature leaf at mid-growth.Take 3 leaves per plant. Return to top.
|
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 |
|
B(ppm) |
||||
|
30-80 |
Cabbage (62) – Sample the young wrapper leaf at head half grown.Take 2 leaves per plant. Return to top.
|
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 |
|
Fe(ppm) |
Zn(ppm) |
B(ppm) |
||
|
30-60 |
20-30 |
30-60 |
Carrot (63) – 60 days after seeding.
The most recently mature leaf should be sampled about 60 days after planting. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
1.80-2.50 |
0.20-0.40 |
2.00-4.00 |
2.00-3.50 |
0.20-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
30-600 |
30-60 |
20-60 |
4-10 |
20-40 |
The most recently matured leaf should be sampled at buttoning to determine if nutrition is adequate for the growing season. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-5.00 |
0.40-0.70 |
2.00-4.00 |
0.80-2.00 |
0.25-0.60 |
0.60-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-600 |
30-80 |
30-50 |
5-10 |
30-50 |
Celery (03) – The outer petiole should be sampled about 6 weeks after transplanting. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
1.50-1.70 |
0.30-0.60 |
6.00-8.00 |
1.30-2.00 |
0.30-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
20-300 |
5-10 |
20-40 |
4-6 |
15-25 |
Collards (64) – Sample young mature leaf at mid-growth.Take 3 leaves per plant. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
|
4.00-5.00 |
0.30-0.60 |
3.00-4.00 |
3.00-4.00 |
|
B(ppm) |
|||
|
50-80 |
Cucumber (53) – The most recent mature or fully expanded leaf is the best indicator sample for all growth stages.This is generally the 4th or 5th leaf from a growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.30-1.00 |
3.00-4.00 |
1.20-2.00 |
0.25-1.00 |
0.20-0.75 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
25-250 |
20-200 |
5-60 |
25-85 |
Cucumber, Greenhouse (76) – The most recent mature or fully expanded leaf is the best indicator sample for all growth stages.This is generally the 3rd or 4th leaf from the growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.50-6.00 |
0.30-0.70 |
3.50-4.50 |
1.20-1.50 |
0.45-0.75 |
0.20-0.70 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
20-300 |
20-70 |
5-35 |
25-85 |
Eggplant (65) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
4.00-6.00 |
0.30-1.20 |
3.50-5.00 |
1.00-2.50 |
0.30-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-300 |
40-250 |
20-250 |
8-60 |
20-75 |
Green Beans (44) – Sample the uppermost mature leaves prior to or at early bloom.Take 3 leaves per plant. Return to top.
|
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 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
300-450 |
30-300 |
30-60 |
15-30 |
40-60 |
Kale (66) – Sample young mature leaf at mid-growth.Take 3 leaves per plant. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
|
4.00-5.00 |
0.30-0.60 |
3.00-4.00 |
3.00-4.00 |
|
B(ppm) |
|||
|
50-80 |
Lettuce (54) – Sample mature bottom leaves near base of plant of mid-growth. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
2.50-4.00 |
0.20-15.0 |
3.50-14.00 |
1.30-4.00 |
0.30-0.80 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al |
|
100-800 |
30-400 |
30-200 |
5-30 |
18-150 |
<800 |
Lettuce, Greenhouse (75) – The most recent mature or fully expanded leaf is the best indicator sample for all growth stages.This is generally the 3rd or 4th leaf from the growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.50-6.50 |
0.30-0.80 |
6.00-10.00 |
1.00-2.00 |
0.35-0.75 |
0.20-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-200 |
20-75 |
5-15 |
25-80 |
Muskmelon (40) – 12-inch Vines
The most recently matured leaf should be sampled when the vines are about 12 inches long. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.40-0.70 |
5.00-7.00 |
3.00-5.00 |
0.35-0.45 |
0.20+ |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
40-100 |
20-100 |
20-60 |
5-10 |
20-80 |
Onion, Vidalia (68) – Sample the most recently mature leaves prior to root or bulb enlargement. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.10-4.27 |
0.26-0.48 |
1.98-4.22 |
0.90-1.84 |
0.16-0.32 |
0.15-0.57 |
|
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
||
|
51-149 |
16-45 |
5-28 |
6-15 |
Peas (45) – Sample entire top growth; bud to full bloom. Return to top.
|
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 |
|
B(ppm) |
||||
|
20-60 |
Pepper, Bell (69) – Prior to Blossoming
The most recent mature leaf should be sampled. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.30-0.50 |
5.00-6.00 |
0.90-1.50 |
0.35-0.60 |
0.30-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
20-150 |
30-100 |
25-80 |
5-10 |
20-50 |
Potatoes, Irish (95) – Sample young mature leaf; tubers half grown.Take 3 leaves per plant. Return to top.
|
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 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
B(ppm) |
|
|
70-150 |
30-500 |
20-40 |
40-60 |
Snap Beans (57) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
5.00-6.00 |
0.35-0.75 |
2.25-4.00 |
1.50-2.50 |
0.30-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-300 |
50-300 |
20-200 |
7-30 |
20-75 |
Spinach (71) – Sample young mature leaf at mid-growth.Take 2 leaves per plant. Return to top.
|
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 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
220-245 |
30-60 |
50-75 |
5-7 |
40-60 |
Spinach, Greenhouse (41) – The most recent mature or fully expanded leaf is the best indicator sample for all growth stages.This is generally the 3rd or 4th leaf from the growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-6.00 |
0.30-0.50 |
3.00-8.00 |
1.00-1.50 |
0.40-1.00 |
0.20-0.80 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
25-200 |
20-75 |
5-15 |
25-60 |
Squash (58) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
4.00-6.00 |
3.00-5.00 |
3.00-5.00 |
1.20-2.50 |
0.30-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-200 |
50-250 |
20-200 |
10-25 |
25-75 |
Sweet Corn (46) – Sample 4th leaf from tip at mid-growth. Return to top.
|
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 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-250 |
20-300 |
20-60 |
5-20 |
5-30 |
Tomatoes, Greenhouse (78) – The most recent mature or fully expanded leaf is the best indicator sample for all growth stages.This is generally the 4th or 5th leaf from the growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.50-5.00 |
0.30-0.65 |
3.50-4.50 |
1.00-3.00 |
0.35-1.00 |
0.20-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
25-200 |
18-80 |
5-35 |
30-75 |
Tomatoes, Trellis (77) – The most recent mature or fully expanded leaf is the best indicator sample. This is generally the 4th or 5th leaf from the growing point. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.50-5.00 |
0.30-0.70 |
3.00-4.50 |
1.00-2.00 |
0.30-0.80 |
0.20-0.80 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
45-300 |
30-300 |
18-75 |
5-30 |
30-75 |
Turnips (59) – Sample young mature leaf at mid-season.Take 3 leaves per plant. Return to top.
|
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 |
|
Zn(ppm) |
Cu(ppm) |
B(ppm) |
||
|
20-50 |
4-8 |
20-40 |
Watermelon (59) – At flower start or initial fruit set. Sample the most recently mature leaves closest to the growing tip.Sample 12-20 leaves, including the petiole. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.50-4.00 |
0.25-0.7 |
2.25-3.50 |
1.10-2.50 |
0.25-0.50 |
0.20-0.40 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-200 |
20-200 |
20-50 |
4-10 |
20-40 |
Fruit Crops
Apples (80) – Sample 8 to 10 weeks after full bloom.Select leaves from middle of current season’s growth, taking 4 to 8 leaves per tree. style="mso-spacerun: yes"> Collect leaves from 25 trees for each sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.10-2.40 |
0.15-0.50 |
1.25-3.00 |
1.00-2.00 |
0.20-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-400 |
20-200 |
15-80 |
5-20 |
30-60 |
Blueberry, Rabbiteye (82) – Take mature leaves from mid-portion of current season’s growth (lateral shoots, position 4, 5, and 6) during the first two weeks after harvest. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
1.20-1.70 |
0.08-0.20 |
0.35-0.60 |
0.25-0.70 |
0.14-0.20 |
0.11-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
25-700 |
25-100 |
10-25 |
2-10 |
12-35 |
Cantaloupe (52) – Sample the mature leaf near tip prior to or at initial fruit set.Take 3 leaves per plant. Return to top.
|
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 |
|
Zn(ppm) |
B(ppm) |
|||
|
30-500 |
30-80 |
Cherry, Sour (13) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
3.16 |
0.27 |
2.11 |
1.12 |
0.41 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
184 |
81 |
33 |
24 |
33 |
161 |
Cherry, Sweet (14) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
2.63 |
0.19 |
1.42 |
1.55 |
0.39 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
128 |
101 |
20 |
30 |
10 |
116 |
Figs (83) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.00-2.50 |
0.10-0.30 |
>1.00 |
>3.00 |
>0.75 |
|
Mn(ppm) |
Cu(ppm) |
|||
|
>20 |
>4 |
Grape, Bunch (47) – Sample 4 to 8 weeks after peak bloom.Collect the petioles from mature leaves or nodes just beyond the fruiting clusters. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
0.81 |
0.31 |
2.00 |
1.66 |
0.41 |
|
Fe(ppm) |
Mn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
39 |
540 |
39 |
28 |
Kiwi (06) – Uniformly select 24 leaves from over the growing unit.Take the first leaf from above the fruit spur on the lateral growth. This fruiting spur should contain at least six leaves beyond the one selected and the fruit load should be a normal cluster of 3-6 average sized fruit.Samples should be taken in late February.Sample the youngest mature leaves. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.37-2.58 |
0.17-0.23 |
1.54-1.87 |
3.11-3.84 |
0.40-0.51 |
0.33-0.44 |
|
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
||
|
104-190 |
15-22 |
5-15 |
31-42 |
Muscadine Grapes (84) – Sample the most recent mature leaves adjacent to fruit clusters taken in mid to late summer, but before final swelling of the fruit. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
1.65-2.15 |
0.12-0.18 |
0.80-1.20 |
0.70-1.10 |
0.15-0.25 |
0.15-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
60-120 |
60-150 |
18-35 |
5-10 |
15-25 |
Peaches (86) – At mid-season, sample mature leaves from the mid-portion or near the base of the current season’s terminal growth from at least 50 trees. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.75-3.50 |
0.12-0.30 |
1.30-3.20 |
1.50-2.50 |
0.25-0.50 |
0.12-0.40 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
>60 |
>20 |
20-50 |
5-20 |
20-80 |
Pears (81) – Sample 50 healthy, mid-terminal leaves on current season’s growth in mid-season. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
1.80-2.50 |
0.12-0.30 |
1.00-2.00 |
1.00-2.00 |
0.25-0.50 |
0.10-0.30 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
30-150 |
20-200 |
20-50 |
5-20 |
20-60 |
Pecans (88) – Sample the middle pair of leaflets from the midportion of terminal growth 56 to 84 days after catkin fall. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.50-3.30 |
0.12-0.30 |
0.75-2.50 |
0.70-1.75 |
0.30-0.60 |
0.20-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
100-800 |
50-100 |
6-30 |
15-50 |
Plums (87) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.40-3.00 |
0.14-0.25 |
1.60-3.00 |
1.50-3.00 |
0.30-0.80 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
100-250 |
40-160 |
20-50 |
6-16 |
25-60 |
Prune (16) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
3.13 |
0.29 |
2.81 |
1.10 |
0.33 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
166 |
82 |
46 |
15 |
42 |
167 |
Raspberry (17) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
2.45 |
0.23 |
1.75 |
1.35 |
0.45 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
215 |
422 |
42 |
33 |
48 |
220 |
Strawberries, Annual Hill Culture (74) – The most recent mature trifoliate and petiole are the best indicator samples.Concentrations of essential elements are determined on the trifoliate.Nitrate nitrogen is determined on the petioles. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-4.00 |
0.20-0.40 |
1.10-2.50 |
0.50-1.50 |
0.25-0.45 |
0.15-0.40 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
30-300 |
15-60 |
3-15 |
25-50 |
Ornamentals
Azaleas (96) – Sample most recently mature, fully expanded leaves. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
1.70-2.30 |
0.16-0.50 |
0.70-1.00 |
0.16-0.30 |
0.08-0.33 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
74 |
53 |
95 |
10 |
35 |
74 |
Cabbage, Ornamental (15) – The most recent mature leaf is the best indicator.10-15 leaves are required for a representative sample. Samples are collected during vegetative growth as soon as plants are large enough. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.50-4.50 |
0.20-0.60 |
3.00-4.00 |
0.50-1.00 |
0.20-0.40 |
0.20-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
20-250 |
20-75 |
3-10 |
20-40 |
Carnations (22) – On young plants, sample 4th and 5th leaf pairs from base before noon. style="mso-spacerun: yes"> On pinched plant, sample 5th and 6th leaf pairs from top. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
3.00-5.00 |
0.20-0.45 |
2.00-6.00 |
0.60-2.00 |
0.15-0.60 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
125+ |
30-300 |
15-75 |
5-30 |
25-400 |
Chrysanthemum (23) – Sample upper leaves of a flowering stem. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
4.50-6.00 |
0.20-1.10 |
3.50-10.00 |
0.50-4.60 |
0.14-1.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
125+ |
200+ |
7-35 |
5-50 |
20-200 |
Geranium (24) – Sample most recently mature, fully expanded leaves. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
3.50-4.80 |
0.20-0.65 |
1.00-4.30 |
0.50-1.20 |
0.20-0.50 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
158 |
42-135 |
8-25 |
7-16 |
30-280 |
Gladiolus (30) – Sample most recently mature, fully expanded leaves. Return to top.
|
N(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.10-2.30 |
4.60-4.90 |
0.50-0.75 |
0.41-0.56 |
|
N(%) |
P(%) |
K(%) |
Ca(%) |
|
2.00 |
1.00-2.50 |
2.50-12.50 |
1.00-1.50 |
Lily (Easter) (39) – Sample most recently mature, fully expanded leaves. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
2.80-4.00 |
0.10-0.30 |
1.50-4.10 |
0.20-2.20 |
0.20-0.30 |
Poinsettia (92) – The most recent fully expanded or mature leaf if the best indicator of nutritional status. style="mso-spacerun: yes"> This is the first fully expanded leaf below the growing point.Sampling is initiated as soon as plants are large enough that leaf removal will not limit further development.Sampling is discontinued when bracts near full development. Depending on size, approximately 10-15 leaves are required per sample. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-6.00 |
0.30-0.60 |
1.50-3.50 |
1.00-1.75 |
0.30-1.00 |
0.10-0.30 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
25-250 |
20-60 |
2-10 |
25-75 |
Rhododendron (97) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
1.60-2.10 |
0.21-0.29 |
0.40-0.80 |
0.80-1.40 |
0.19-0.27 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
193-245 |
602-154 |
21-37 |
1-3 |
33-47 |
Roses (12) – Sample upper leaves of flowering stem. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
3.00-5.00 |
0.20-0.30 |
1.80-3.00 |
1.00-1.90 |
0.25-0.35 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
50-150 |
30-250 |
15-50 |
5-25 |
30-60 |
Snapdragon (41) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
|
4.20-4.90 |
0.30-0.50 |
2.20-2.60 |
1.20-1.40 |
Trees
Deciduous (18) – Sample young mature leaves at mid-season. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
2.30 |
0.34 |
1.41 |
1.33 |
0.34 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
222 |
130 |
40 |
11 |
36 |
284 |
Evergreen (19) – Sample youngest mature leaves of broadleaf plants or 2-3 inches terminal cuttings of narrowleaf evergreens at mid-season. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
|
2.14 |
0.35 |
1.38 |
0.84 |
0.26 |
|
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
Al(ppm) |
|
201 |
213 |
54 |
13 |
27 |
241 |
Fraser Fir (91) – Needles from most recent mature foliage in the upper half of the tree are the best indicator sample.Do not sample needles from the leader or top whorl.For monitoring, the preferred sampling time is in the fall after dormancy. Samples should contain 15-20 laterals from ten or more trees representing the field. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
1.50-2.00 |
0.20-0.60 |
0.60-0.80 |
0.45-0.60 |
0.10-0.20 |
0.08-0.20 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
40-300 |
30-300 |
18-75 |
5-10 |
18-30 |
Pine, Loblolly (48) – Foliage samples should be taken in the winter (mid-December to mid-February) from at least 10 dominant trees per stand, south side, upper 1/3 of the crown, from the first flush of growth from a primary lateral branch.
Collect enough to fill an 8x11 paper envelope.Refrigerate until analysis. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
1.10 |
0.10 |
0.35 |
0.12 |
0.07 |
Pine, Longleaf (49) - Foliage samples should be taken in the winter (mid-December to mid-February) from at least 10 dominant trees per stand, south side, upper 1/3 of the crown, from the first flush of growth from a primary lateral branch.
Collect enough to fill an 8x11 paper envelope.Refrigerate until analysis. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
0.90 |
0.08 |
0.30 |
0.10 |
0.06 |
Turf
Bentgrass (42) – A representative sample of clippings from a freshly mowed green is the best indicator of nutritional status.A double handful of clippings is an adequate sample.The sample should be taken when clippings are free of foreign matter, including sand, pine straw, etc. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
4.00-5.00 |
0.30-0.60 |
2.20-3.50 |
0.25-0.75 |
0.20-0.40 |
0.20-1.00 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-300 |
25-300 |
20-70 |
5-15 |
3-20 |
|
Bermudagrass (Tifton-328,Tifton-428) (89) – Collect representative samples of clippings after routine mowing. A double handful is an adequate sample size. Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
3.00-4.00 |
0.20-0.40 |
1.80-2.25 |
0.25-0.50 |
0.15-0.30 |
0.15-0.65 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-250 |
20-300 |
15-70 |
5-20 |
5-60 |
Carpetgrass (93) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-20 |
5-15 |
Centipede (94) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-20 |
5-15 |
Cool Season Grass (38) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-20 |
5-15 |
Orchardgrass (32) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-10 |
5-15 |
St. Augustine (35) Return to top.
|
N(%) |
P(%) |
K(%) |
Ca(%) |
Mg(%) |
S(%) |
|
2.00-2.60 |
0.23-0.40 |
1.20-2.00 |
0.25-0.50 |
0.10-0.25 |
0.15-0.25 |
|
Fe(ppm) |
Mn(ppm) |
Zn(ppm) |
Cu(ppm) |
B(ppm) |
|
|
50-200 |
20-300 |
20-70 |
4-10 |
5-15 |
Zoysia (36) Return to top.
|
P(%) |
K(%) |
Ca(%) |
Mg(%) |
|
0.11-0.39 |
0.38-1.51 |
0.31-0.54 |
0.11-0.25 |