Correcting Soil Problems with Amendments - PowerPoint PPT Presentation

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Correcting Soil Problems with Amendments

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Correcting Soil Problems with Amendments – PowerPoint PPT presentation

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Title: Correcting Soil Problems with Amendments


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.)
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