SprayEngine Review

Scoring rules, operational parameters, logging, and diagnostic log review

Engine parameters

Rain probability threshold (%) NWS PoP at or above this value is treated as rain expected. Rain amount threshold (in) Minimum precipitation amount in inches to qualify as a rain event. Rain-avoidance days Required clear days following a candidate spray day.

Weighted scoring rules

Select All	Rule	Weight	Description
	disease		Disease coverage for elevated/high-risk diseases.
	additional_disease		Additional coverage for more than one elevated disease.
	curative		Curative activity when infection is indicated.
	preventive_with_infection		Penalty for preventive-only products when infection is indicated.
	multi_site		Multi-site coverage value when disease pressure exists.
	stage_match		Preferred growth-stage match.
	stage_adjacent		Adjacent growth-stage match.
	stage_mismatch		Penalty for a growth-stage mismatch.
	gdd_match		Preferred GDD range match.
	rain_disease		Rain-favored disease pressure from the forecast.
	heavy_rain_disease		Heavy forecast rainfall increasing rain-favored disease concern.
	wet_multi_site		Multi-site value during wet weather.
	near_term_rain		Penalty when rain is forecast soon after the candidate date.
	extended_wet		Extended wet-forecast consideration.
	frac_rotation		FRAC rotation away from the most recently used group.
	multi_site_rotation		Value for adding a multi-site after a single-site.
	approaching_frac_limit		Penalty when approaching the consecutive-use limit.
	high_resistance		Penalty for high resistance-risk products.
	interval_satisfied		Candidate date satisfies product spray interval.
	heavy_rain_reapplication		Priority for reapplication after significant rain.
	combo_coverage		Combination disease-coverage value.
	combo_frac		Combination FRAC diversity value.
	combo_multi_site		Combination multi-site diversity value.
	phi_margin		PHI margin scoring parameter.
	disease_stage_relevance		Growth-stage relevance of each targeted disease.