34 - 35.page16 - NRES 201 Intro to Soil Science Lec 34-35...

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Unformatted text preview: NRES 201 Intro to Soil Science Lec. 34-35 3/17/2010 Practical Soil Fertility Management Ch. 13 P Fertilizer Recommendations: Relationship to Soil—Test Level Below soilitest goal 0 Buildup + maintenance At or up to 20 lb/aere above soilitest goal 0 l\’Iaintenanee only More than 20 lb/aere above soilitest goal 0 Nonertilizer o Retest the soil in 4 years K Fertilizer Recommendations: Relationship to Soil—Test Level Below soilitest goal 0 Buildup + maintenance. At or u?) to 100 lb/acre above soilitest goal 0 A aintenance only. More than 100 lb/acre above soilitest goal 0 No K fertilizer. o Retest the soil in 4 years. 0 Retest in 2 years if alfalfa is being grown and the K test is 4007600. F and K Fertilizer Recommendations: Example Assume o TamailVIuseatine in Fulton eounty' (western IL) 0 Corn after soybean 0 Yield g 180 hu/A o Soilitest levels Test value 34 270 16 ...
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