Cultivar Mgmt. Profiles
Ranger Russet
Russet Norkotah
Yukon Gold
Atantic
Norland
Snowden
Red Cloud
Shepody
Fertilizers
Potassium
Sulfur
Micronutrients
Placement
Cementing
Crusting
External Disorders
Internal Disorders
Environmental Disorders
Diseases
Wilts
Tuber Wet Rot
Tuber Blemishes
Early Blights
Beneficial Insects
Predators
Green Lacewings
Lady Beetles
Stink Bugs
Insects
Defoliators
Vectors
Tuber Eaters
General Interest
Lab to Label
Controlling Volunteers
Biopesticides
Chemophobia
Neutraceutical
BT Potato
Chemical Effects
Controlling Volunteers
Weed Control

 Table 1. Minimum sulfur fertilization suggestions for potatoes.

S Soil
ppm SO
4-S

S to Broadcast
lbs/acre*

0-5

25

6-8

15

> 8

0


 Table 2. Ammonium sulfate on common scab, black scurf and yield when applied in-furrow at planting.

AS rate
lb/acre

Common Scab
% Tubers

Black Scurf
% Tubers

Effect on
US#1 Yield

0-210

Decrease

Slight Decrease

Increase

> 210*

No change

No change

No change

Table 3. Sulfur-containing soil amendments with the amount needed to give one (1) pound of sulfur (S).

Amendment

Pounds Needed for
One Pound of Sulfur

Elemental Sulfur, 99% S

1.00

Degradable Sulfur, 90% S

1.10

Sulfuric Acid, 98% H2SO4

3.06

Lime-Sulfuric Solution, 24% S

4.17

Gypsum, 18.6% S, CaSO4 x 2H2O

5.38

Ammonium Sulfate, 24% S. (NH4)SO4

4.12

Magnesium Sulfate, MgSO4

3.14

Potassium Sulfate, K2SO4

5.44

Epsom Salts, MgSO4 x 7H2O

7.86

Ferric Sulfate, Fe2(SO4)3

4.16

Ferrous Sulfate, FeSO4

4.74

Ferrous Sulfate, FeSO4 x H2O

5.30

Ferrous Sulfate, FeSO4 x 7H2O

8.69

Aluminum Sulfate, A12(SO4)3 x 18H2O

6.94

Ammonium Polysulfide, 45% S, (NH4)2 Sx

2.22

Ammonium Thiosulfate, 26% S, (NH4)2S2O3 + H2O

3.85

Calcium Polysulfide, 24% S CaSx + H2O

4.17

Sulfur Dioxide, 50% S SO2

2.00