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| Web URL(s): | http://hdl.handle.net/2027/mdp.39015001262743?urlappend=%3Bseq=63
Last checked: 02/05/2014
Notes: Item is within a single large file |
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| Publication Type:
| Refereed |
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| Author(s): | Hardison, John R. |
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| Author Affiliation: | Research Plant Pathologist, Plant Science Research Divsion, Agricultural Research Service, United States Department of Agriculture and Department of Botany and Plant Pathology, Oregon Agricultural Experiment Station, Corvallis |
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| Title: | Control of Ustilago striiformis and Urocystis agropyri in Poa pratensis 'Merion' by minute dosages of pyrimidine compounds |
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| Source: | Plant Disease Reporter. Vol. 56, No. 1, January 1972, p. 55-57. |
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| Publishing Information: | [Washington, D.C.]: Bureau of Plant Industry, U.S. Dept. of Agriculture |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Urocystis agropyri; Ustilago striiformis; Poa pratensis
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| Abstract/Contents: | "A new systemic fungicide, α-(2-chlorophenyl)-α-cyclohexyl-5-pyrimidinemethanol (EL-279), applied once to soil has controlled and apparently eradicated Urocystis agropyri (flag smut) and Ustilago striiformis (stripe smut) in infected plants of Poa pratensis 'Merion'. Elimination of U. agropyri and 97% control of U. striiformis were obtained by only 0.25 mg and 1 mg, respectively, in 600 ml soil containing plants with 15 to 20 shoots. Plants cured of both smuts remained smut-free beyond 24 weeks, indicating eradication of the pathogens. Shoots infected with U. striiformis became chlorotic and died within 6 to 10 weeks after application and were replaced by healthy shoots arising from basal stem buds. Shoots infected with U. agropyri were not killed by effective dosaged of EL-279 and became smut-free by development of healthy tissue fro basal meristems. Healthy plants were only slightly affected by EL-279 at minimum effective dosages for smut eradication. Fugicide EL-279 is effective at a fraction of the dosage needed for comparable control by α-(2,4-dichlorophenyl)-α-phenyl-5- pyrimidinemethanol (triarimol) which was reported previously as more effective than other systmeic chemicals for eradicaton of stripe smut and flag smut in P. pratensis." |
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| Language: | English |
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| References: | 8 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hardison, J. R. 1972. Control of Ustilago striiformis and Urocystis agropyri in Poa pratensis 'Merion' by minute dosages of pyrimidine compounds. Plant Disease Reporter. 56(1):p. 55-57. |
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| Web URL(s):
http://hdl.handle.net/2027/mdp.39015001262743?urlappend=%3Bseq=63
Last checked: 02/05/2014
Notes: Item is within a single large file |
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MSU catalog number: b2191617 |
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