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Soil & PlantTissue Testing for Florida Pastures

Soil & PlantTissue Testing for Florida Pastures. Ed Jennings UF-IFAS Extension Pasco County. Soil Test. Chemical analysis to assess the plant-available nutrient status, salinity, and elemental toxicity of a soil Soil sample collection: representative of the entire area of interest

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Soil & PlantTissue Testing for Florida Pastures

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  1. Soil & PlantTissue Testing for Florida Pastures Ed Jennings UF-IFAS Extension Pasco County

  2. Soil Test Chemical analysis to assess the plant-available nutrient status, salinity, and elemental toxicity of a soil Soil sample collection: representative of the entire area of interest • Differences in soil type • Areas managed or cropped differently • Areas that clearly have some type of problem

  3. Differences in Soil Type

  4. Soil Test Handling and submitting your soil sample 1. Samples are thoroughly mixed 2. Sub-sample should be placed in a clean and properly labeled soil sample bag 3. Samples should be delivered to lab as soon as possible after collection

  5. Area A - Light colored soil Area B - Dark colored soil

  6. Yield will be limited by the element in shortest supply in relation to plants needs

  7. Target pH for different forage crops grown on mineral soils1

  8. Fertilizer Label • Nitrogen – Phosphorus – K Potassium • Always in this same order, by law • Each number is percentage of that nutrient • 6-6-6 is 6 % N, 6%P, & 6%K • That’s only 18% or 18 lbs per 100 • Whats the rest ?

  9. Critical Plant Nutrient Levels in Bahiagrass Tissue

  10. Example Report

  11. LIME AND FERTILIZER RECOMMENDATIONS • Crop: Bahiagrass • Lime:427.0 lbs per acre (1 Ton = 2000 Lbs) • Nitrogen: 60 lbs per acre • Phosphorus: 0lbs per acre • Potassium: 0lbs per acre • Magnesium: (Mg) 0 lbs per acre

  12. LIME AND FERTILIZER RECOMMENDATIONS • Crop: Improved perennial grasses other than bahiagrass(bermuda,digit,limpo,star) • Lime: 0.0 lbs per acre (1 Ton = 2000 Lbs) • Nitrogen: 160 lbs per acre • Phosphorus: 0 lbs per acre • Potassium: 80 lbs per acre • Magnesium: (Mg) 0 lbs per acre

  13. Some Useful Links http://edis.ifas.ufl.edu/departments/soilwater.html http://soilslab.ifas.ufl.edu/ESTL%20Home.asp http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx

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