|Van Cauwenberge, James|
|Shea Wilbur, Maureen|
Submitted to: International Conference on Plant Growth Substances Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: July 18, 1995
Publication Date: N/A
Technical Abstract: Liquid culture technologies are being developed to mass produce fluorescent pseudomonads that can be applied as seed inoculants to biocontrol take-all, an important root disease of wheat. Nutritional and physical conditions of the culture environment were controlled in fermentors to regulate antibiotic and phytotoxin accumulations during production of Pseudomonas fluorescens 2-79. Culture harvests formulated in 0.5% methylcellulose wer applied as seed coatings, which provide an economical method of targeting the inoculation of emerging roots. Inoculum survival, as well as seed germination, take-all suppression, and seedling development observed in growth chamber bioassays were influenced by the liquid culture production conditions of the biocontrol agents.