Author:
Walker H. Lynn,Riley Joe A.
Abstract
A method is described to produce inoculum ofAlternaria cassiaeJurair and Khan for biocontrol studies. Approximately 8 g of a conidial preparation containing 1 × 108conidia/g were produced per liter of growth medium. In greenhouse studies the effectiveness ofA. cassiaeas a biocontrol agent for sicklepod (Cassia obtusifoliaL.) was affected by dew-period temperature, dew-period duration, inoculum concentration, and the stage of growth of sicklepod seedlings at the time of inoculation. Optimum environmental conditions included at least 8 h of free moisture at 20 to 30C. Spray mixtures containing approximately 5 × 104or more conidia/ml gave maximum control when sicklepod seedlings were sprayed to runoff. Sicklepod seedlings in the cotyledon to first-leaf stage were most susceptible to the pathogen.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference18 articles.
1. Sicklepod (Cassia obtusifolia) and coffee senna (Cassia occidentalis): Geographic distribution, germination, and emergence;Teem;Weed Sci.,1980
2. V-8 juice agar as a general-purpose medium for fungi and bacteria;Miller;Phytopathology,1955
3. Competition of sicklepod (Cassia obtusifolia) and redroot pigweed (Amaranthus retroflexus) with cotton (Gossypium hirsutum;Buchanan;Weed Sci.,1980
4. General Electric Company, Cleveland, OH 44112.
5. Mention of a trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product by the U.S. Dep. Agric. and does not imply its approval to the exclusion of other products or vendors that may also be suitable.
Cited by
86 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献