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Drought Calculator

Drought Calculator. Arnold Norman, NRCS Fort Worth, TX Gale Dunn, ARS Fort Collins, CO Megan Christensen, ARS Fort Collins NDSU Research Ext. Centers ARS-Mandan, Miles City. Monthly Precip . Plant Growth Curves Long Term monthly Precip . Growth Model or Long Term research. Temperature

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Drought Calculator

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  1. Drought Calculator • Arnold Norman, NRCS Fort Worth, TX • Gale Dunn, ARS Fort Collins, CO • Megan Christensen, ARS Fort Collins • NDSU Research Ext. Centers • ARS-Mandan, Miles City

  2. Monthly Precip. • Plant Growth Curves • Long Term monthly Precip. • Growth Model or Long Term research

  3. Temperature • Timing and Intensity of precip. • 75% Accuracy

  4. Forage Growth potential

  5. Carry-Over Potential • One year-Less than 50% correlation • Several years-negative effect • Carry-over not used by Drought Calculator

  6. Rainfall and Forage Growth

  7. Half of normal March-June • 5 inches in July…too late

  8. Drought Plan • Protect the Resource • Implement a grazing system • Develop Water • Monitor at Critical Dates • Prepare to sell down • Accept it…Drought Happens

  9. http://www.nrcs.usda.gov/wps/portal/nrcs/site/nd/home/

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