Meeting crop nitrogen needs with manure while overapplying other nutrients can save the crop farmer the cost of additional fertilizer, but every decision we make on a farm has consequences. Managing manure based on more than just one nutrient might be more complicated, but it may save our fields from implications that we may not have thought about initially. During this webinar, we will discuss using whole farm and field-based nitrogen (N) and phosphorus (P) balances to identify opportunities for improvements in nutrient use and monitor the impact of management changes over time. Presenters will also discuss the time necessary to reduce the soil phosphorus levels after phosphorus fertilization is halted in cropping fields. Additionally, we’ll consider the issues with zinc accumulation in soils that have received repeated applications of poultry litter or swine manure and the challenges with managing zinc toxicity.
An application for continuing education credit for Certified Crop Advisors (CCAs) and members of the American Registry of Professional Animal Scientists (ARPAS) will be submitted.
Presenters include:
- Quirine Ketterings & Agustin Olivo, Cornell University
- Stephanie Kulesza, North Carolina State University
- Luciano Gatiboni, North Carolina State University
Handouts (PDF format) will be available the day of the webinar at the live webinar information page. Find out more about this webinar and future webinars by the Livestock and Poultry Environmental Learning Community (LPELC).
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