• Forms of sulfur in soils~ ./ Mostly org.anic matter sulfur (>90%) ./ Inorganic sulfates (S04•..S) in subsoil on clays, Fe & AI oxides ./ -0.1 % of the Earth's crust .I 13th most abundant element • Atmospheric sulfur- .I Up to 25 Ibs. S04-5 I acre I year .I Higher downwind from fossil fuel burning industries • Irrigation water sulfur- .I Great Plains: -30 Ibs. S I acre I year .I Highiy variable-Western USA: 6 to 2,000 Ibs. S I acre-ft. water, 50 Ibs. S I acre-ft. ave. .I Corn, 150 bu. I A 28 Ibs~ S I A Corn grain, 150 bu 10 lbs, S .I Wheat, 80 bu. I A... ··..··· 21 Ibs. S I A Wheat grain, 80 bu.··· ..···..6 lbs. S .I Soybean, 40 bu. I A 18 Ibs, S I A Soybean grain, 40 bu. ··· 4 lbs. S .I Alfalfa hay, 8 tons I A .": ··38 Ibs. S J A Sulfur-t
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• Forms of sulfur in soils~./ Mostly org.anic matter sulfur (>90%)./ Inorganic sulfates (S04 •..S) in
subsoil on clays, Fe & AI oxides./ -0.1 % of the Earth's crust.I 13th most abundant element
• Atmospheric sulfur-.I Up to 25 Ibs. S04-5 I acre I year.I Higher downwind from fossil fuel
burning industries
• Irrigation watersulfur-.I Great Plains: -30 Ibs. S I acre I year.I Highiy variable-Western USA:
6 to 2,000 Ibs. S I acre-ft. water,50 Ibs. S I acre-ft. ave.
.I Corn, 150 bu. I A 28 Ibs~ S I A
Corn grain, 150 bu 10 lbs, S
.I Wheat, 80 bu. I A... ··..··· 21 Ibs. S I AWheat grain, 80 bu.··· ..···..6 lbs. S
.I Soybean, 40 bu. I A 18 Ibs, S I ASoybean grain, 40 bu. ··· 4 lbs. S
.I Alfalfa hay, 8 tons I A.": ··38 Ibs. S J A
Sulfur-t
-(f)CI)..t:os::::-s:.•..a.CI)
"0
'0en
• Sandy loam A
~ Sandy loam B
k;;~·:.lSilt loam
o Clay loam
Fine sandy loam
Delmarva, C,orn(combination of 4 locations)
-SulfurRf!te
Ibs.lA.
o
Ear Leaf I Ear LeafN S I N:S%) I 0/0
2.70 0.26 11.2
GrainYieldbu.lA.
146
25 2.78 0.27 11.3 149
50 2.79 0.29 10.5 154
100 2.82 0.30 9.6 150
-I I0 30 60 90
I 200 I 2.85 I 0.31 I 9.9 149Soil 504-5 (ppm) ... '-.- -=~=>-.~~, ._-- ~ .' --. - ._- -