| Preface |
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iii | |
| PLENARY PAPERS |
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1 | (142) |
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Quality of Soil and Plant Analyses in Relation to Sustainable Agriculture |
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1 | (12) |
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Soil Analysis as a Tool to Predict Effects on the Environment |
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13 | (18) |
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Quality Aspects in Laboratories for Soil and Plant Analysis |
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31 | (22) |
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Laboratory Quality: A Method for Change |
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53 | (20) |
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Certification of a Routine Laboratory for Soil and Crop Testing |
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73 | (16) |
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Soil Fertility Research in Sub-Saharan Africa: New Dimensions, New Challenges |
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89 | (22) |
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International Standardization of Soil Quality Measurements |
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111 | (16) |
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Certified Reference Materials for the Quality Control of Total and Extractable Trace Element Determinations in Soils and Sludges |
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127 | (16) |
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| POSTER PRESENTATIONS QUALITY ASSURANCE |
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143 | (74) |
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Aspects of Quality Assurance Within the Wageningen Evaluating Programmes for Analytical Laboratories (WEPAL) |
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143 | (8) |
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Quality Assurance and Control in a Plant Analysis Laboratory |
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151 | (10) |
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Quality Assurance Schemes for Soil and Plant Analyses in South Africa |
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161 | (12) |
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Statistical Remarks on Laboratory-Evaluating Programs for Comparing Laboratories and Methods |
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173 | (16) |
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Are the Differences Among Samples from Agricultural Trials Analyzed by Routine Procedures Experimental or Only Analytical? |
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189 | (14) |
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Systematic Bias in Measuring Intensities by Selective Extraction of Bulked Samples |
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203 | (14) |
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S. E. A. T. M. van der Zee |
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| SOIL TESTING METHODS |
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217 | (180) |
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Sample Collection Procedures for Laboratory Analysis in the United States Soil Survey Program |
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217 | (6) |
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Possibility of Different Soil Sampling Techniques with Automated Soil Sampler |
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223 | (16) |
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Integrating the Mehlich-3 Extractant into Existing Soil Test Interpretation Schemes |
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239 | (14) |
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Nutrient Absorption Characteristics of Resin Capsules for the Photoavailability Soil Test (PST) in Four Arkansas Soils |
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253 | (14) |
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Determination of Labile and Releasable Forms of Available Phosphorus |
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267 | (12) |
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Soil Phosphate Adsorption and Desorption in 0.01M Calcium Chloride Electrolyte |
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279 | (16) |
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Assessment of Available Phosphorus and Potassium in Soils by the Calcium Chloride Extraction Method |
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295 | (10) |
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Spatial Variability in Topsoil Micronutrient Contents in a One-Hectare Cropland Plot |
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305 | (26) |
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Efficiency of Multinutrient Extractants for the Determination of Available Copper in Soils |
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331 | (10) |
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Salinity-Heavy Metal Interactions as Evaluated by Soil Extraction and Plant Analysis |
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341 | (8) |
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Coca Cola (R) Is It! The Ubiquitous Extractant for Micronutrients in Soil |
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349 | (10) |
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Preliminary Experience with Calcium Chloride Method in Poland |
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359 | (16) |
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Reevaluation of Suspension Solutions for Soil pH |
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375 | (10) |
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Different Methods for Determination of Plant Available Soil Phosphorus |
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385 | (12) |
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| METHODS OF SOIL AND PLANT ANALYSIS |
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397 | (308) |
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The Molybdate/Ascorbic Acid Blue Method for the Phosphorus Determination in Very Dilute and Colored Extracts by Segmented Flow Analysis |
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397 | (14) |
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Optmizing an Inductively Coupled Plasma Emission Spectrometer Analysis Time with the Use of a Direct Injection Nebulizer |
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411 | (10) |
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The Effect of Acid Digestion Technique on the Performance of Nebulization Systems Used in Inductively Coupled Plasma Spectrometry |
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421 | (24) |
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Comparison of Two Methods for Predicting Trace Elements from Fly Ash on Acid Mine Spoils |
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445 | (14) |
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Comparison of Methods to Evaluate Heavy Metals in Organic Wastes |
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459 | (12) |
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Quantitative Analysis of Organic Wastes: Effects of Sample Preparation in the Determination of Metals |
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471 | (10) |
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Automated Method for Sulphate Determination in Soil-Plant Extracts and Waters |
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481 | (14) |
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Quick Ion Chromatographic Determination of Sulfate Alone in Soil Extracts and Natural Waters |
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495 | (10) |
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Comparison of Methods for Determination of Nitrogen Levels in Soil, Plant and Body Tissues, and Water |
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505 | (12) |
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Advantages of Nitrate Determination by Use of E. coli Cells in Different Matrices |
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517 | (16) |
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Determination of Available Phosphorus in Soils from Northern Greece by the Electro-ultrafiltration (EUF) and Other Methods of Soil Analysis |
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533 | (18) |
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A Routine Procedure for Measurement of Calcium Carbonate Activity in Gypsum Rich Soils |
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551 | (12) |
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A Rapid Method for the Indirect Determination of the Organic Matter Content of Soils |
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563 | (14) |
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A Rapid Method for the Indirect Determination of the Clay Content by X-ray Fluorescence Spectroscopic Analysis of Rubidium in Soils |
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577 | (14) |
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Determination of Potentially Dangerous Elements in Soil Extracts by Atomic Emission Spectrophotometry-ICP: Correction of Interferences |
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591 | (10) |
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A New Approach to the Determination of Phosphate Rock Dissolution in Organic Soils Using Graphite Furnace Atomic Absorption Spectrophotometry |
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601 | (22) |
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Measuring Natural Abundance of Stable S Isotopes in Soil by Isotope Ratio Mass Spectrometry |
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623 | (14) |
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Simultaneous Determination of Ammonium and Nitrate in Soils |
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637 | (6) |
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Factors Affecting Potato Petiole Sap Nitrate Tests |
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643 | (16) |
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Non-destructive Method for Determining Ash Content in Pasture Samples: Application of Near Infrared Reflectance Spectroscopy |
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659 | (8) |
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Parameters Influencing the Calcination of Plant Materials in Muffle Furnaces and Their Importance for Micronutrient Analysis |
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667 | (8) |
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Iodine Determination in Plant Materials |
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675 | (12) |
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Comparison of Some Methods for the Determination of Total Sulfur in Plant Tissues |
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687 | (10) |
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Comparison Between Two Dry Mineralization Methods (With and Without HF) of Palm Leaves for Determination of Potassium--Influence of Silica |
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697 | (8) |
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| SOIL AND PLANT ANALYSIS RECOMMENDATIONS |
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705 | (146) |
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Video Image Analysis as a Nondestructive Measure of Plant Vigor for Precision Agriculture |
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705 | (8) |
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Experience with Fertilizer Expert Systems for Balanced Fertilizer Recommendations |
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713 | (12) |
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A Quadratic Model for Fertilizer Recommendations Based on Results of Soil Analyses |
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725 | (16) |
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Yield and Nutrient Mapping for Site Specific Fertilizer Management |
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741 | (16) |
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Economic Phosphorus Fertilization Using a Linear Response and Plateau Function |
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757 | (14) |
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Fertilizer Requirement Calculation Moderated by Apparent Retention as Deduced from Two Soil Extracts |
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771 | (8) |
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Monitoring Nitrogen Status of Corn with a Portable Chlorophyll Meter |
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779 | (16) |
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Assessing Aluminum Phytotoxicity in Long-Term Phosphate Fertilized Pasture Soils |
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795 | (18) |
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Determination of Potassium, Magnesium, Phosphorus, Manganese and Cation Exchange Capacity for Fertilizer Recommendations Used by Czech Union of Rapeseed Growers |
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813 | (14) |
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Cadmium Content of Plants as Affected by Soil Cadmium Concentration |
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827 | (14) |
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Corn Response to Sidedress Nitrogen in Relation to Soil Nitrate Concentration |
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841 | (10) |
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Pre-sidedress Nitrate Soil Testing to Manage Nitrogen Fertility in Irrigated Corn in a Semi-arid Environment |
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851 | |
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