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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #130634
Title: COTTON HADSS: HOW WE VALIDATED THE GEORGIA DATABASE.

Author
item Webster, Theodore
item CULPEPPER, A - UNIVERSITY OF GEORGIA
item HARDISON, GREGORY - MONTGOMERY COUNTY EXTN.
item WILSON, JR., S - IRWIN COUNTY EXTENSION

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Abstract Only
Publication Acceptance Date: 1/31/2002
Publication Date: 6/1/2002
Citation: Webster, T.M., Culpepper A.S., Hardison, G.B., Wilson, Jr., S.G. 2002. Cotton HADDS: How we validated the Georgia database [abstract]. Proceedings of the Beltwide Cotton Research Conference, Cotton Weed Science Research Conference. Paper No. 1.

Interpretive Summary:

Technical Abstract: Selecting an appropriate weed control program can be difficult, especially when multiple weed species are present. HADSS is a decision support system developed to assist in making appropriate weed control recommendations. To validate this database, the most important question to address was "Can HADSS pick the same treatment as our weed science extension specialists?" Various weed density scenarios were posed to Drs. Stanley Culpepper and Steve M. Brown and their recommendations in a Roundup Ready and nontransgenic cotton system were compared to those from HADSS. HADSS selected treatments had a net gain within 10 and 20% of the experts' recommendations 57 and 79% of the time, respectively. In field studies at nine locations between 1999 and 2001, HADSS treatments averaged a cost of $28/acre (Expert: $32/acre) and $59/acre (Expert: $49/acre) in the Roundup Ready and nontransgenic systems, respectively. There were no differences in weed control or crop yields (in 8 of the nine locations) between HADSS and experts. While the HADSS database will continue to evolve, we believe that it has been validated for Georgia. HADSS is a valuable resource for decision makers to improve their understanding weed-crop interactions and the biological and economic implications of various weed control programs. In this capacity, HADSS can be used as a real-time interactive model in the field and as an educational tool to help train weed control decision makers.