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Physicochemical properties of granular formulation using Paenibacillus sp. AC-1 as a microbial fungicide  

Oh, Kyeong-Seok (Research Management Bureau, Rural Development Administration)
Lee, Young-Kee (National Institute of Agricultural Science & Technology, RDA)
Lee, Jae-Kook (National Institute of Agricultural Science & Technology, RDA)
Kim, Jin-Hwa (National Institute of Agricultural Science & Technology, RDA)
Publication Information
The Korean Journal of Pesticide Science / v.9, no.3, 2005 , pp. 262-267 More about this Journal
Abstract
In order to commercialize Paenibacillus sp. AC-1 and to minimize its harmful side effects, four granular formulations were prepared using AC-1 powder, adjuvant, and carrier and then their physicochemical properties of the formulations were investigated. Out of the carriers tested, the best one was talc for the formulation. Viable cells was stabilized during the formulating process. Viable cells in the granules formulated with Paenibacillus sp. AC-1 powder were stabilized at storage temperature range ($4{\sim}50^{\circ}C$) after 12 weeks. The release rate of viable cells from granules into water under a static condition were eluted over 90% in 7 hours and breakdown rates of particle were 100% in 1 day. Among the tested formulations, granular formulation comprising of 20% of Paenibacillus sp. AC-1 powder, 7% of polycarboxylate as surface active agent, 1% of sodium polyacrylate as adjuvant, the rest as carrier showed to be best.
Keywords
Paenibacillus sp. AC-1; Microbial pesticide; Pesticide formulation;
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