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 Timing and Intensity of precip. 75% Accuracy
Forage Growth potential
Carry-Over Potential One year-Less than 50% correlation Several years-negative effect Carry-over not used by Drought Calculator
Rainfall and Forage Growth
Half of normal March-June 5 inches in July…too late
Drought Plan Protect the Resource Implement a grazing system Develop Water Monitor at Critical Dates Prepare to sell down Accept it…Drought Happens
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