ORIGINAL ARTICLE
Influence of some compounds on germination and development of Puccinia pelargonii-zonalis and pelargonium growth
 
More details
Hide details
1
Research Institute of Pomology and Floriculture Pomologiczna 18, 96-100 Skierniewice, Poland
CORRESPONDING AUTHOR
Adam T. Wojdyła
Research Institute of Pomology and Floriculture Pomologiczna 18, 96-100 Skierniewice, Poland
 
Journal of Plant Protection Research 2007;47(2):187–195
KEYWORDS
TOPICS
ABSTRACT
The effectiveness of 7 fungicides ( Amistar 250 SC, Bayleton 5 WP, Bumper 250 EC, Discus 500 WG, Folicur BT 225 EC, Folicur Multi 50 WG, Score 250 EC) and 2 bioproducts (Biochikol 020 PC and Biosept 33 SL) in the control of Puccinia pelargonii-zonalis was tested on pelargonium cv. Pulsar F1 Salmon. Additionally, their influence on plant growth, size of pustules, percentage of germinated spores and phytotoxicity were assessed. Plants were sprayed 4 times at weekly intervals. Among tested compounds the most effective in suppressing new uredia formation were Amistar 250 SC, Bayleton 5 WP, Biosept 33 SL, Bumper 250 EC, Folicur BT 225 EC and Score 250 EC. Furthermore, some fungicides inhibited germination of urediospores on PDA medium. Fourteen days after the last spraying more than 76% of germinating urediospores were found on control leaves. At the same time spores collected from plants protected with Amistar 250 SC, Bayleton 5 WP, Folicur BT 225 EC and Folicur Multi 50 WG germinated sporadically in 1.5 to 4.0%. In the next part of experiment, plants with visible sporulation of P. pelargonii-zonalis were sprayed with tested compounds. After 1, 7 and 14 days of incubation, total number of spores and number of germinating spores were counted. After 1 or 7 days, urediospores collected from untreated plants germinated in more than 80% whereas from plants sprayed with tested fungicides except Amistar 250 SC in 20–66.6%. Amistar 250 SC was the most effective in suppressing urediospore germination. All fungicides used in protection of young pelargonium plants, except Amistar 250 SC and Biochikol 020 PC, decreased plant growth. None of tested compounds showed phytotoxicity toward tested pelargonium cultivar.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
 
REFERENCES (16)
1.
Daughtrey M.L., Wick R.L., Peterson J.L. 1995. Compendium flowering potted plants diseases. The APS Press, St. Paul, 90 pp.
 
2.
Glaser T., Biliński W., Glaser J. 1974. Chemical control of carnation rust (Uromyces caryophyllinus) and geranium rust (Puccinia pelargonii-zonalis). Pr. Inst. Sad. 4: 1–7.
 
3.
Harwood C.A., Raabe R.D. 1979. The disease cycle and control of geranium rust. Phytopathology 69: 923–927.
 
4.
Jeffers S.N., Luszcz L.A. 1998. Controlling rust on zonal geranium with fungicides. SNA Research Conference 43: 228–232. http://www.sna.org/research/98....
 
5.
Meeus P. 1980. Fungicidal efficiency of triadimefon against Pelargonium rust ( Puccinia pelargonii-zonalis Doidge). Parasitica 36: 18–24.
 
6.
Rytter J.L., Lukezic F.L., Craig R., Moorman G.W. 1989. Biological control of geranium rust by Bacillus subtilis. Phytopathology 79: 367–370.
 
7.
Spencer D.M. 1976. Pelargonium rust and its control by fungicides. Plant Pathol. 25: 156–161.
 
8.
Wojdyła A.T. 2000a. Influence of some compounds on development of Sphaerotheca pannosa var. rosae.J. Plant Protection Res. 40: 106–122.
 
9.
Wojdyła A. 2000b. Efficacy of fungicides in the control of Sphaerotheca pannosa var. rosae on greenhouse rose cultivars and their influence on the growth and development of plants. J. Plant Protection Res. 40: 61–68.
 
10.
Wojdyła A.T. 2000c. Influence of some compounds on germination and development of Sphaerotheca pannosa var. rosae. Med. Fac. Landbouww. Univ. Gent, 65: 817–821.
 
11.
Wojdyła A.T. 2002. Azoles in the control of Puccinia horiana on chrysanthemum. J. Plant Protection Res. 42: 261–270.
 
12.
Wojdyła A.T. 2004a. Development of Puccinia horiana on chrysanthemum leaves in relation to chemical compounds and time of their application. J. Plant Protection Res. 44: 91–102.
 
13.
Wojdyła A.T. 2004b. Wyciąg z grejpfruta w ochronie chryzantemy i wierzby przed rdzą. Prog. Plant Protection/Post. Ochr. Roślin 44: 1220–1224.
 
14.
Wojdyła A.T. 2004c. Chitosan (Biochikol 020PC) in the control some ornamental foliage diseases. Comm. App. Biol. Sci. Ghent University 69: 705–715.
 
15.
Wojdyła A.T. 2005. Activity of plant and mineral oils in the control of Puccinia pelargonii-zonalis. Comm. App. Biol. Sci. Ghent University 70: 193–198.
 
16.
Wojdyła A.T., Łyś J. 2000: Influence of chemical compounds on germination and development of Diplocarpon rosae. J. Plant Protection Res. 40: 168–172.
 
eISSN:1899-007X
ISSN:1427-4345