188 DEVELOPMENT OF A FORECAST SYSTEM FOR GROWTH REGULATOR (HYDROGEN CYANAMIDE) APPLICATION ON PEACHES USING A COMPUTERIZED AGRICULTURAL WEATHER PROGRAM

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  • 1 Alabam a Cooperative Extension Service and National Weather Service, Auburn University, AL 36849

In order to provide timely weather information to county agents (CEA) and growers, a sophisticated user friendly weather information program was developed that provides over 900 weather files daily to users. This program uses a 420 Sun Server that automatically downloads files from the NWS office on the AU campus and makes them instantly available to CEA offices via the Extension Network. Growers may obtain information from CEAS or use their personal computers to access a “Weather Board”. A chilling/growing degree hour (GDH) model (mod. 45) has been developed for peaches that provides a good estimate of when rest is completed and allows prediction of phenological stages through flowering. This information assists growers with orchard management decisions. Studies with peaches were conducted using the chilling/GDH model to properly apply hydrogen cyanamide (Dormex) to replace lack of chilling. This work resulted in an effective application timing based on chilling accumulation and allowed development of a forecast model for grower use.

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