Peanuts Lime is essential for successful peanut production. It is a major source of calcium and magnesium, boosts the efficiency of nutrient uptake and utilization, promotes nodulation and nitrogen fixation and reduces the potential of aluminum toxicity. The pH range for optimum peanut production is from 5.8 to 6.2. This problem can be prevented by supplying calcium with lime instead of landplaster. The acidity associated with by-product gypsum requires that soil pH be monitored more frequently.
Excessive potassium can be detrimental to a peanut crop.
If this cannot be done, apply and incorporate the recommended K 2 O as far before planting as possible to allow enough time for potassium to move below the fruiting zone before pegging. Manganese deficiency may occur when the soil pH exceeds 6.2. If you suspect a manganese deficiency, collect soil and plant samples and have them analyzed. Boron can be applied as a preplant broadcast treatment along with other fertilizer applications, or with the preplant incorporated herbicide application. Cotton is very sensitive to soil acidity and has a high calcium requirement for quality lint production.