| Normal Floral and Ornamental Plants |
|---|
| Boston fern |
Five to 10 months after planting/Pinnae from whole fronds or 4-6 inch mid-section |
2.00-3.00 |
0.50-0.70 |
3.00-4.00 |
0.35-0.50 |
0.45-0.60 |
- |
50-140 |
50-80 |
25-50 |
5-10 |
35-50 |
| Carnations |
Unpinched plants: 4th or 5th leaf pairs from base or plant.
Pinched plants: 5th and 6th leaf pairs from top of primary laterals. |
3.20-5.20 |
0.20-0.30 |
2.50-6.00 |
1.00-2.00 |
0.20-0.50 |
- |
50-200 |
50-150 |
30-100 |
10-30 |
25-75 |
| Chrysanthemums |
Prior to or at flowering. Top-most fully expanded leaves. |
4.00-6.50 |
0.25-1.00 |
3.50-6.50 |
0.50-2.00 |
0.30-0.60 |
- |
30-350 |
50-300 |
25-100 |
5-50 |
15-50 |
| Geranium |
Prior to or at flowering. Top-most fully expanded leaves. |
3.30-4.80 |
0.40-0.65 |
2.50-4.50 |
0.80-1.20 |
0.20-0.50 |
- |
40-175 |
70-270 |
30-280 |
7-16 |
8-40 |
| Poinsettias |
Prior to or at floweing. Most recently mature, fully expanded leaves. |
4.00-6.00 |
0.30-0.65 |
1.50-3.50 |
0.70-2.00 |
0.40-1.00 |
- |
40-200 |
50-500 |
30-300 |
5-15 |
20-60 |
| Roses |
During flower production. Top-most to fully expanded leaves (5-leafet) on flowering stem. |
3.00-5.00 |
0.20-0.30 |
1.80-3.00 |
1.00-1.50 |
0.25-0.35 |
- |
30-250 |
50-150 |
30-60 |
5-15 |
15-50 |
| Foliage Plants |
After establishment. Uppermost mature leaves. |
1.50-3.50 |
0.20-0.40 |
1.00-4.00 |
0.50-2.00 |
0.30-0.80 |
- |
31-300 |
50-150 |
25-100 |
5-20 |
15-50 |
| Azaleas |
Prior to and after flower production. Most recently mature leaves, |
2.00-3.00 |
0.20-0.50 |
0.80-1.60 |
0.20-1.60 |
0.17-0.50 |
- |
30-300 |
50-150 |
20-100 |
6-15 |
15-60 |
| Rhododendron |
Prior to and after flower production. Most recently mature leaves. |
1.40-1.75 |
0.20-0.30 |
1.00-1.20 |
0.90-1.20 |
0.20-0.30 |
- |
50-500 |
40-80 |
30-50 |
4-10 |
20-50 |
| Woody Ornamentals |
Late May-Sept. deciduous & evergreen; also December March for evergreens. Upper-most mature leaves. (*Ranges For Evergreens Only) |
1.50-3.50*
2.00-4.50 |
0.20-0.60 |
1.50-3.50 |
0.50-2.50 |
0.20-1.00*
0.30-1.00 |
- |
30-300 |
50-300 |
30-50 |
6-40 |
30-75 |
| Normal Vegetable Plants |
|---|
| Asparagus |
Midgrowth/mature fern from 18-36" up |
2.40-4.50 |
0.20-0.30 |
1.50-2.50 |
0.40-1.75 |
0.15-0.70 |
- |
15-70 |
40-70 |
25-100 |
6-11 |
20-60 |
| Beans, snap |
Bloom stage/Uppermost mature leaves, 2-3 leaves per plant |
4.00-6.00 |
0.30-6.00 |
1.80-3.50 |
0.80-3.00 |
0.25-0.70 |
0.20-0.40
N:S < 20:1 |
20-200 |
25-300 |
20-60 |
5-20 |
25-60 |
| Broccoli |
Heading/Recently mature leaf |
3.20-5.50 |
0.30-0.70 |
2.00-4.00 |
1.20-2.50 |
0.20-0.40 |
>0.20 |
25-150 |
40-300 |
30-100 |
5-10 |
20-95 |
| Brussel Sprouts |
Midgrowth/Recently mature leaf |
2.20-5.00 |
0.20-0.60 |
2.40-3.50 |
0.30-1.50 |
0.20-0.40 |
>0.20 |
20-120 |
50-150 |
10-50 |
3-10 |
20-80 |
| Cabbage |
Head 1/2 grown/Young wrapper leaf, 2 leaves/plant |
3.00-4.60 |
0.25-0.50 |
2.50-4.00 |
1.50-3.00 |
0.20-0.60 |
>0.30 |
25-60 |
40-200 |
25-60 |
5-20 |
20-200 |
| Cantaloupe |
Prior to or at initial fruit set/Mature leaves near the growing tip of the plant |
2.00-4.00 |
0.25-0.40 |
1.80-4.00 |
1.80-7.00 |
0.50-1.50 |
>0.20 |
20-200 |
30-200 |
20-80 |
4-25 |
20-60 |
| Collards |
Midgrowth/Young mature leaf |
4.00-5.00 |
0.30-0.60 |
3.50-5.00 |
1.50-3.00 |
0.45-1.00 |
0.30-1.75 |
>40 |
40-100 |
25-45 |
3-10 |
20-70 |
| Cucumber |
Prior to or at initial fruit set/Mature leaves near the growing tip of the plant |
4.00-6.00 |
0.30-0.60 |
2.25-4.00 |
1.25-3.50 |
0.30-0.60 |
0.30-0.80 |
30-300 |
40-300 |
25-60 |
5-60 |
20-50 |
| Kale |
Midgrowth/Young mature |
4.00-5.00 |
0.30-0.60 |
3.50-5.00 |
1.50-3.00 |
0.45-1.00 |
0.30-1.75 |
>40 |
- |
25-45 |
3-10 |
20-70 |
| Lettuce |
Heading/Wrapper leaf |
3.30-4.50 |
0.40-0.60 |
4.50-8.00 |
1.40-2.00 |
0.30-0.70 |
>0.30 |
30-200 |
50-500 |
25-55 |
10-35 |
25-150 |
Onion Vidalia
or Granex type |
Prior to or at bulb initiation/ Most recently mature leaves |
2.50-3.00 |
0.35-0.50 |
2.45-4.65 |
0.60-0.80 |
0.11-0.25 |
0.20-0.60 |
- |
- |
5-15 |
- |
9-15 |
| Pepper, Bell |
Prior to or at bloom/Most recently mature leaves |
4.00-6.00 |
0.20-0.50 |
4.00-5.75 |
0.90-1.70 |
0.30-0.70 |
0.40-0.65 |
30-100 |
30-300 |
20-55 |
5-30 |
25-80 |
| Pepper, Pimento |
Prior to or at bloom/Most recently mature leaves |
4.00-5.65 |
0.20-0.50 |
3.95-5.35 |
1.05-2.30 |
0.40-0.75 |
0.45-0.65 |
30-100 |
30-300 |
20-60 |
5-30 |
20-60 |
| Potatoes, Irish |
Early flowering/Uppermost mature leaves |
4.00-5.00 |
0.35-0.55 |
4.25-6.50 |
1.00-2.00 |
0.30-0.50 |
0.25-0.50 |
50-300 |
40-200 |
30-60 |
6-20 |
20-60 |
| Potatoes,Irish |
Tubers halfgrown/Upper most mature leaves |
3.00-5.00 |
0.20-0.40 |
4.00-8.00 |
1.50-2.50 |
0.50-0.80 |
0.19-0.36 |
30-450 |
70-200 |
30-40 |
6-20 |
20-40 |
| Potatoes, Sweet |
Midgrowh/Recently mature leaf |
3.20-5.20 |
0.20-0.50 |
2.90-4.30 |
0.60-1.50 |
0.30-0.80 |
>0.20 |
40-400 |
50-250 |
25-50 |
5-20 |
25-50 |
| Spinach |
Midgrowth/Recently mature leaf |
4.00-6.00 |
0.30-0.60 |
3.00-6.00 |
0.60-1.80 |
0.40-1.00 |
>0.30 |
30-60 |
30-300 |
25-60 |
5-10 |
20-75 |
| Sweet Corn |
Leaf below whorl prior to tasseling |
2.90-3.95 |
0.28-0.40 |
2.60-3.50 |
0.23-0.60 |
0.15-0.40 |
0.17-0.40
N:S < 17:1 |
30-140 |
30-200 |
5-20 |
4-10 |
25-60 |
| Sweet Corn |
Tasseling/ Ear leaf |
2.60-3.50 |
0.20-0.30 |
1.80-2.50 |
0.20-0.30 |
0.15-0.30 |
0.15-0.35
N:S < 17:1 |
20-100 |
30-200 |
10-70 |
5-20 |
20-60 |
| Squash |
Prior to or at initial fruit set/Mature leaves near the growing tip of plant |
3.50-6.00 |
0.25-0.60 |
2.75-5.00 |
1.00-2.50 |
0.30-0.60 |
>0.20 |
50-300 |
50-300 |
25-75 |
5-60 |
20-50 |
| Tomato, Field |
Prior to or during early bloom stage/Third or fourth leaf from growing tip |
4.00-5.60 |
0.30-0.60 |
3.00-4.50 |
1.25-3.20 |
0.40-0.65 |
0.65-1.40 |
30-400 |
30-300 |
20-60 |
5-15 |
20-90 |
| Turnip Greens |
Mid-season or at harvest/ Recently mature leaves |
3.00-5.50 |
0.35-0.80 |
3.00-5.00 |
1.50-3.00 |
0.40-0.80 |
>0.30 |
30-100 |
80-370 |
30-60 |
3-10 |
20-70 |
| Watermelon |
Prior to or at initial fruit set/mature leaves near the growing tip of plant |
2.50-4.50 |
0.25-0.70 |
2.25-3.50 |
1.10-2.50 |
0.25-0.80 |
>0.20 |
20-200 |
30-300 |
30-80 |
4-8 |
20-60 |
| Compiled by: |
C. Owen Plant, Ext. Argonomist- Soil Testing and Plant Analysis
Darbie M. Granberry, Ext. Horticulturist
Sharad Phatak, Professor of Horticulture
|