Field EvaluationField data include information about the:
Determine Nutrient NeedsYou need to determine the nutrient needs of your crops to make sure the amount of biosolids applied doesn't exceed the agronomic rate.
For assistance with test interpretation see,
Application RateWhen designing an application program, consider the variables affecting the nitrogen cycle at the site, such as plant uptake, leaching potential, nitrogen losses, and transformations. You can adjust the application rate, timing, and method as needed for the site that meets requirements of the biosolids rule and your permit. Your goal is for crops or other vegetation to have the best possible uptake of nitrogen and no leaching below the root zone. It should be noted that all calculations are in dry tons of biosolids.
For assistance calculating biosolids application rates see,
Monitor Crop & SoilMonitoring activities for matching biosolids nutrients to crop needs may include:
Biosolids AnalysisAgronomists and land managers use biosolids analysis to determine how well biosolids can satisfy nutrient needs. Only a portion of the total nitrogen content of biosolids is immediately available for plant uptake. The remainder is in an organic form that slowly becomes available to plants after application. Biosolids analysis also determines phosphorus content, which can help determine application appropriateness at any given site.
For assistance estimating available nitrogen see,
Record KeepingRecords should be in a simple, legible, reproducible format. Below is stage specific record keeping information. You may be required keep additional records, depending on the conditions of your permit coverage.
One of the best ways to demonstrate the beneficial use of biosolids is to compare pre and post-application monitoring. Soil tests will show changes in plant-available soil nutrients. Plant tissue tests show changes in crop nutrient content. Soil and plant tests can also be used to compare biosolids-treated and untreated areas within the same field.
Maintaining agronomic rate records allows you to document that applications have met agronomic rate requirements.
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