logging in or signing up Soil Testing Procedures for Biologically Based Sys Kestrel Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1265 Category: Entertainment License: All Rights Reserved Like it (3) Dislike it (0) Added: October 04, 2007 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: ygshsonar (22 month(s) ago) Dear sir above soil testing presentation its fantastic... So Plz forwerded to my email id. ygshsonar@gmail.com best regards yogesh. Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Soil Testing Procedures for Biologically Based Systems: Soil Testing Procedures for Biologically Based Systems Raymond C. Ward Ward Laboratories, Inc Kearney, Nebraska www.wardlab.comSoil Testing for No Till Farmers: Soil Testing for No Till Farmers I have been interested in developing soil tests that could be analyzed quickly and at low cost that could let the farmer know how well his operation was improving yield and soil health. Researchers at the National Tilth Lab at Ames Iowa are developing a soil quality index that may give the right parameters to analyze.Soil Quality Index: Soil Quality Index Total Organic C Potential Mineralizable N Soil pH Soil Extractable P Sodium Adsorption Ratio Electrical Conductivity Microbial Biomass C Microbial Quotient qCO2 Macroaggregate Stability Available Water Capacity Bulk DensityCarbon Cycle: Carbon CycleTotal Organic Carbon: Total Organic Carbon Soil Organic Matter test Loss on Ignition (LOI) Carbon Analyzer Soil Organic Matter is 58 % C Food for Microbes Microbial Biomass: Microbial Biomass Biological Activity Active Soil Carbon Increases with Cropping Intensity Measurement involves Incubation for 3 days or more Particulate Organic Matter: Particulate Organic Matter Decomposed Residue Slow Turnover Pool of OM Soils with the Most Intensive Cropping System Contains the Highest POM Major Substrate used by MicrobesMineral Associated Organic Carbon: Mineral Associated Organic Carbon This Organic Carbon is Not Influenced by Cropping Intensity It is the Largest Supply of Organic Carbon Takes Years to Increase Stabilized (that part we could not destroy by tillage)Nitrogen Cycle: Nitrogen CycleNitrogen Cycle: Nitrogen Cycle Plant and Animal Residue/Organic Soil N/Air N Microorganisms Ammonification (NH4) – Plant Uptake – Soil Complex Nitrification (NO3) – Plant Uptake – Leaching - Denitrification Immobilization (Soil Organic N) Sulfur Cycle: Sulfur CycleSulfur Cycle: Sulfur Cycle Plant and Animal Residues/Organic Soil S Microbial Breakdown Oxidation/Reduction Sulfates/Sulfides and from Fertilizers, etc Sulfate Plant uptake Leaching Soil MineralsNo-Till Sulfur Deficiency: No-Till Sulfur Deficiency Most of the Sulfur in the soil is held in the organic matter portion of the soil The idea is to build organic matter to improve the health of the soil and increase productivity C : N : S ratio 100C : 8N : 1SSoil Sample Depth: Soil Sample Depth Evaluating No-Till 0-2 inches most active 2-6 inches 6-12 inches Evaluating Fertility 0-8 inches for all nutrients 8-36 inches for Nitrate, Chloride, Sulfate Nutrient Uptake and Root Structure: Nutrient Uptake and Root StructureGranular Structure: Granular StructureMicrobe Tests: Microbe TestsSoil pH: Soil pH Important for Crop Growth Important for Microbe Growth Tendency to Decrease over Time Some Herbicides Less Affective at Low pH Broadleaf Crops Contain more Calcium and Magnesium Optimum Soil pH : Optimum Soil pH Crop Mid Point Range (+/-) Wheat 6.3 .75 Corn 6.3 2.0 Soybean 6.3 1.2 Sunflower 6.6 2.1 Field Peas 6.5 1.0 Nitrate Soil Test: Nitrate Soil Test Consider nitrate in your root zone Total Lbs/A are available Subtract total Lbs/A from N requirement N recommendation based on nitrate in the root zonePhosphorus Soil Test: Phosphorus Soil Test Soil test ppm P Rating % Sufficiency 0-5 Very Low 25-50 6-12 Low 45-80 13-25 Medium 70-95 26-50 High 90-100 51+ Very High 100 Phosphorus deficiency: Phosphorus deficiency Potassium Soil Test: Potassium Soil Test Soil Test ppm K Rating % Sufficiency 0-40 Very Low 20-50 41-80 Low 45-80 81-120 Medium 70-95 121-200 High 90-100 201+ Very High 100 Sulfur Soil Test: Sulfur Soil Test Soil Test ppm S Rating 0-3 Very Low 4-6 Low 8-12 Medium 13-20 High 20+ Very HighSulfur in Wheat: Sulfur in WheatSulfur Deficiency: Sulfur DeficiencyZinc Soil Test: Zinc Soil Test Soil Test ppm Zn Rating 0-.25 Very Low .26-.50 Low .51-1.00 Medium 1.01+ HighZinc Deficiency Wheat: Zinc Deficiency WheatZinc deficiency: Zinc deficiencyZinc Deficiency Wheat: Zinc Deficiency WheatCopper Soil Test: Copper Soil Test 0-.20 Low .20-.60 Medium >.60 HighCopper Deficiency Wheat: Copper Deficiency WheatCopper Deficiency Wheat: Copper Deficiency Wheat You do not have the permission to view this presentation. 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Soil Testing Procedures for Biologically Based Sys Kestrel Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1265 Category: Entertainment License: All Rights Reserved Like it (3) Dislike it (0) Added: October 04, 2007 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: ygshsonar (22 month(s) ago) Dear sir above soil testing presentation its fantastic... So Plz forwerded to my email id. ygshsonar@gmail.com best regards yogesh. Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Soil Testing Procedures for Biologically Based Systems: Soil Testing Procedures for Biologically Based Systems Raymond C. Ward Ward Laboratories, Inc Kearney, Nebraska www.wardlab.comSoil Testing for No Till Farmers: Soil Testing for No Till Farmers I have been interested in developing soil tests that could be analyzed quickly and at low cost that could let the farmer know how well his operation was improving yield and soil health. Researchers at the National Tilth Lab at Ames Iowa are developing a soil quality index that may give the right parameters to analyze.Soil Quality Index: Soil Quality Index Total Organic C Potential Mineralizable N Soil pH Soil Extractable P Sodium Adsorption Ratio Electrical Conductivity Microbial Biomass C Microbial Quotient qCO2 Macroaggregate Stability Available Water Capacity Bulk DensityCarbon Cycle: Carbon CycleTotal Organic Carbon: Total Organic Carbon Soil Organic Matter test Loss on Ignition (LOI) Carbon Analyzer Soil Organic Matter is 58 % C Food for Microbes Microbial Biomass: Microbial Biomass Biological Activity Active Soil Carbon Increases with Cropping Intensity Measurement involves Incubation for 3 days or more Particulate Organic Matter: Particulate Organic Matter Decomposed Residue Slow Turnover Pool of OM Soils with the Most Intensive Cropping System Contains the Highest POM Major Substrate used by MicrobesMineral Associated Organic Carbon: Mineral Associated Organic Carbon This Organic Carbon is Not Influenced by Cropping Intensity It is the Largest Supply of Organic Carbon Takes Years to Increase Stabilized (that part we could not destroy by tillage)Nitrogen Cycle: Nitrogen CycleNitrogen Cycle: Nitrogen Cycle Plant and Animal Residue/Organic Soil N/Air N Microorganisms Ammonification (NH4) – Plant Uptake – Soil Complex Nitrification (NO3) – Plant Uptake – Leaching - Denitrification Immobilization (Soil Organic N) Sulfur Cycle: Sulfur CycleSulfur Cycle: Sulfur Cycle Plant and Animal Residues/Organic Soil S Microbial Breakdown Oxidation/Reduction Sulfates/Sulfides and from Fertilizers, etc Sulfate Plant uptake Leaching Soil MineralsNo-Till Sulfur Deficiency: No-Till Sulfur Deficiency Most of the Sulfur in the soil is held in the organic matter portion of the soil The idea is to build organic matter to improve the health of the soil and increase productivity C : N : S ratio 100C : 8N : 1SSoil Sample Depth: Soil Sample Depth Evaluating No-Till 0-2 inches most active 2-6 inches 6-12 inches Evaluating Fertility 0-8 inches for all nutrients 8-36 inches for Nitrate, Chloride, Sulfate Nutrient Uptake and Root Structure: Nutrient Uptake and Root StructureGranular Structure: Granular StructureMicrobe Tests: Microbe TestsSoil pH: Soil pH Important for Crop Growth Important for Microbe Growth Tendency to Decrease over Time Some Herbicides Less Affective at Low pH Broadleaf Crops Contain more Calcium and Magnesium Optimum Soil pH : Optimum Soil pH Crop Mid Point Range (+/-) Wheat 6.3 .75 Corn 6.3 2.0 Soybean 6.3 1.2 Sunflower 6.6 2.1 Field Peas 6.5 1.0 Nitrate Soil Test: Nitrate Soil Test Consider nitrate in your root zone Total Lbs/A are available Subtract total Lbs/A from N requirement N recommendation based on nitrate in the root zonePhosphorus Soil Test: Phosphorus Soil Test Soil test ppm P Rating % Sufficiency 0-5 Very Low 25-50 6-12 Low 45-80 13-25 Medium 70-95 26-50 High 90-100 51+ Very High 100 Phosphorus deficiency: Phosphorus deficiency Potassium Soil Test: Potassium Soil Test Soil Test ppm K Rating % Sufficiency 0-40 Very Low 20-50 41-80 Low 45-80 81-120 Medium 70-95 121-200 High 90-100 201+ Very High 100 Sulfur Soil Test: Sulfur Soil Test Soil Test ppm S Rating 0-3 Very Low 4-6 Low 8-12 Medium 13-20 High 20+ Very HighSulfur in Wheat: Sulfur in WheatSulfur Deficiency: Sulfur DeficiencyZinc Soil Test: Zinc Soil Test Soil Test ppm Zn Rating 0-.25 Very Low .26-.50 Low .51-1.00 Medium 1.01+ HighZinc Deficiency Wheat: Zinc Deficiency WheatZinc deficiency: Zinc deficiencyZinc Deficiency Wheat: Zinc Deficiency WheatCopper Soil Test: Copper Soil Test 0-.20 Low .20-.60 Medium >.60 HighCopper Deficiency Wheat: Copper Deficiency WheatCopper Deficiency Wheat: Copper Deficiency Wheat