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Acid Soils. Toxic due to aluminum
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1. Correcting Soil Problems with Amendments Problem soils need to be managed by adding;
Lime
Gypsum
Sulfur
Organic Matter
2. Acid Soils Toxic due to aluminum & manganese
Alters activities of microorganisms involved in N and S transformation in the soil.
P availability is greatly reduced.
Usually low in Calcium & Magnesium
3. Tolerance to Acidity Know the four levels and some crops in each.
4. Correction of acid soil Add Lime
Refer to Table 10-2 & 10-3
5. Saline & Sodic Soils (Alkali) Soils contain excessive amounts of sodium.
6. Correction of Saline soil Sulfur, Sulfuric Acid, Ferric sulfate, Lime sulfur, Aluminum sulfate, & Ammonium polysulfide.
Leaching with high quality irrigation water.
Note gypsum, organic matter, manure, & crop residue.
7. Management of Saline & Sodic soils Refer to page 249
(salt tolerant crop, drainage, irrigation, tillage methods, chemical amendments, ect.)