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Soils are the medium in which most plants grow. To understand soil fertility is to understand a basic need of crop production. Soil fertility is essential for a productive soil but not all fertile soils are productive. Poor drainage, insects, drought, and several other factors can limit production even when nutrient levels are high. These factors also account for some of the year to year variability that one finds in crops even though fertility remains fairly constant. |
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©National Cotton Council, Memphis TN |
Document last modified Monday, Jun 21 1999
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