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Efficacy of fungicides and essential oils against bacterial diseases of fruit trees

100%

Mikicinski A., Sobiczewski P., Berczynski S.

Journal of Plant Protection Research

|

2012

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tom 52

|

nr 4

In the framework of the performed studies, the antibacterial activity of the following fungicides was evaluated: Miedzian 50 WG (active substance - a.s. 50% copper oxychloride), Ridomil MZ Gold 68 WG (a.s. 3.8% metalaxyl-M and 64%, mancozeb), Euparen Multi 50 WG (a.s. 50% tolylfluanid), Captan 80 WG [a.s. 80% N-(captan)], Dithane Neotec 75 WG (a.s. 75% mancozeb). The evaluation also concerned the essential oils: lavender, sage, lemon balm, clove, and a preparation based on thyme oil (BioZell). Each preparation and compound was tested against the following bacterial pathogens: Erwinia amylovora, Xanthomonas arboricola pv. corylina, X. arboricola pv. juglandis, Pseudomonas syringae pv. syringae, Agrobacterium tumefaciens (presently Rhizobium radiobacter). Each preparation and compound was tested at a concentration of 1,000 ppm of active substance. Copper oxychloride was also tested at a concentration of 1,500 ppm. Among the tested fungicides, metalaxyl-M with mancozeb, mancozeb alone, and copper oxychloride inhibited all of the tested strains of pathogenic bacteria. Tolylfluanid did not inhibit any of the bacteria used. Out of the investigated essential oils, the strongest inhibitors of bacteria were: sage, cloves, and BioZell. The protective activity of the above mentioned fungicides was also evaluated in vivo. They were assessed against fire blight on apple blossoms and pear fruitlets, against bacterial canker on sweet cherry fruitlets, and against crown gall on sunflower seedlings (the test plant). All fungicides were applied at the same concentrations as those in the in vitro tests. Only copper oxychloride was found to show protective activity against the studied diseases. This result indicates that the antibacterial properties of the other fungicides did not correspond with their activity on the plant organs used in the in vivo experiment.

2

The effect of fungicides on mycorrhized and non-mycorrhized seedlings of Scots pine. II. The formation of mycorrhizae

100%

Aleksandrowicz-Trzcinska M.

Folia Forestalia Polonica. Series A . Forestry

|

2000

|

tom 42

3

Side effects of fungicides and insecticides on entomopathogenic fungi in vitro

86%

Fiedler Z., Sosnowska D.

Journal of Plant Protection Research

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2017

|

tom 57

|

nr 4

Products based on different strains of entomopathogenic fungi are now being used in Integrated Pest Management (IPM) programs. Compatibility studies of chemical and biological control agents are necessary to be able to give proper recommendations for their integrated use. The effect of three insecticides based on imidacloprid, spinosad and abamectin, and three fungicides based on chlorothalonil, azoxystrobin and thiophanate-methyl on the activity of the following entomopathogenic fungi: Metarhizium anisopliae (Metschn.) sensu lato, Beauveria bassiana (Bals.-Criv.) Vuill., Acremonium sp. was tested under laboratory conditions. Tests of the influence of the pesticides on growth and production of conidia were performed. From this study, we concluded that all tested insecticides can be applied together with fungus B. bassiana products in IPM programs. They even stimulate sporulation of this fungus at the recommended dose, 0.5 of the recommended dose and 1.5 times the recommended dose. In the case of fungicides we observed inhibition of growth and sporulation of B. bassiana and reduction of growth and sporulation of other species of fungi.

4

The effect of some fungicides on the course of mitosis and induction of chromosomal aberrations in Vicia faba cells

86%

Osiecka R.

Bulletin of the Polish Academy of Sciences. Biological Sciences

|

1987

|

tom 35

|

nr 10-12

5

Studies on the microbial corrosion inhibitors with sulfonyl groups

86%

Zakrzewski A., Janota H.

Pestycydy

|

2004

|

nr 1-2

41-49

6

Nowe fungicydy rolnicze

86%

Sobotka W.

Progress in Plant Protection

|

2000

|

tom 40

|

nr 1

213-217

7

Toxicological aspects of multicomponent pesticides

86%

Knapek R.

Pestycydy

|

1990

|

nr 2-3

8

The effects of fungicides on Fusarium oxysporum f. sp. lycopersici associated with Fusarium wilt of tomato

86%

Amini J., Sidovich D. F.

Journal of Plant Protection Research

|

2010

|

tom 50

|

nr 2

172-178

Tomato fusarium wilt is considered as one of the most important diseases of tomato both in field and greenhouse - grown tomatoes worldwide. In presented research, six fungicides; benomyl, carbendazim, prochloraz, fludioxonil, bromuconazole and azoxystrobin, were evaluated for their efficacy against the disease casual agent Fusarium oxysporum f. sp. lycopersici in vitro and in vivo. Seven different concentration (0.0001, 0.001, 0.01, 0.1, 1, 10, 100 μg/ml) were used for assessment of their inhibitory activities against the pathogen through mycelial growth inhibition on potato media. Four concentrations of above mentioned fungicides (0.1, 1. 10 and 100 μg/ml) were tested for controlling Fusarium wilt on tomato plants in glasshouse. Fungal radial growth was measured and median effective concentration (EC50) values (μg/ml) determined. The result of glasshouse tests revealed a different degree of efficacy of all tested fungicides in reducing disease infestation. Prochloraz and bromuconazole were the most effective fungicides against the pathogen both in vitro and in vivo, followed by benomyl and carbendazim. All other fungicides were less effective. Conserning the application date of fungicides it was shown that they were less effective when applied 7 days after tomato plant infection, compared with 1 day prior infection. No phytotoxic symptoms were observed after the application of prochloraz, bromuconazol and benomyl when used at recommended doses, especially on seedlings. However both fungicides fludioxonil and bromuconazole were shown to be phototoxic to tomato seedlings.

9

Effect of some fungicides against the growth inhibition of Sclerotinia sclerotiorum mycelial compatibility groups

86%

Dalili A., Bakhtiari S., Barari H., Aldaghi M.

Journal of Plant Protection Research

|

2015

|

tom 55

|

nr 4

Sclerotinia sclerotiorum (Lib.) de Bary, the causal agent of Sclerotinia stem rot, is one of the most important pathogens of Brassica napus L. in northern Iran. In this study, 13 mycelial compatibility groups (MCGs) of the fungus were identified among 31 isolates sampled from four regions of Mazandaran province, Iran. Effective fungicides are useful in the integrated management of the disease. So, the effect of tebuconazole, propiconazole, cyproconazole, and Rovral-TS at five doses (0.0001, 0.001, 0.01, 0.1, and 1 ppm) was studied on the growth inhibition of S. sclerotiorum as in vitro tests. Maximum inhibition (100%) of S. sclerotiorum mycelial growth was obtained by the highest dose (1 ppm) of all tested fungicides, as well as by the doses of 0.1 and 0.01 ppm of propiconazole, cyproconazole, and tebuconazole. In this investigation, the reaction of S. sclerotiorum isolates belonging to different MCGs was evaluated against tebuconazole, propiconazole, cyproconazole, and Rovral-TS at their EC50 ranges. The results revealed that there was high variation of S. sclerotiorum MCGs against different fungicides. The inhibition percentage varied between 4.29% and 71.72%.

10

Genotoxic and haematological effect of commonly used fungicide on fish Clarias batrachus

86%

Shahi J., Singh A.

Journal of Biology and Earth Sciences

|

2014

|

tom 04

|

nr 2

11

Fungicidal evaluation of substituted 4-(1,3,4-thiadiazol-2-yl) benzene-1,3-diols

86%

Niewiadomy A., Matysiak J.

Pestycydy

|

2010

|

nr 1-4

Fungicidal properties of 4-(1,3,4-thiadiazol-2-yl)benzene-1,3-diols set under in vitro conditions against five phytopathogenic fungi have been evaluated. The substitution panel includes amino-, alkyl-, alkoxyl-, aryl- and heteroarylderivatives. The most active compound with the benzyl substituent exhibits fungistatic effects amounting to 90-100% with the concentration of 20 μg mL-1 against R. solani, similar to the standard fungicides. The derivatives with amine moiety generally display lower activity than other analogues. F. culmorum seems to be the most refractory fungus compared to studied compounds. The influence of substitution of C-5 at the constant fragment at C-2 of 1,3,4-thiadiazole ring on the antifungal effect is discussed. To explain differences in the activity the quantum-chemical calculations were made.

12

Mozliwosci wyboru fungicydow do ochrony pszenicy

86%

Kurzynska B.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

|

2003

|

nr 05

14-15

13

Study of chlorothalonil uptake in selected plant materials

86%

Zebrowski W., Ligor T., Buszewski B.

Polish Journal of Environmental Studies

|

2008

|

tom 17

|

nr 3

321-326

The objective of this work was to create a sorption model of different pesticides in plant material. The above-quoted model includes graphic curves describing the pesticide’s behaviour in time (concentration level) depending on the place of sorption. Apart from curves the model also includes mathematical equations that allow us to predict the concentration of a pesticide in time function. The model has been developed based on research data obtained in a special experimental device. This article accounts for the transportation model of chosen xenobiotics in plants. Chlorothalonil were used as a model pesticide. Chlorothalonil is a nonsystemic fungicide that has been used to control disease of many fruits, vegetables, and other agricultural crops. As a method of sample preparation supercritical fluid extraction was used. Gas chromatography with mass spectrometry was used for qualitative and quantitative analysis. The detection limit (LOD) of chlorothalonil was on level 0.01 µg/g. and the limit of quantification (LOQ) was level on 0.03 µg/g.

14

Impurities of procymidone - GC-MS identification. Optimization of procymidone crystallization conditions

86%

Polec I., Lewandowska M., Kielczewska A., Legocki J.

Pestycydy

|

2004

|

nr 1-2

33-40

15

The effect of application of biopreparations and fungicides on the yield and selected parameters of seed value of seed potatoes

86%

Pszczolkowski P., Sawicka B.

Acta Agrophysica

|

2018

|

tom 25

|

nr 2

16

The effect of fungicides on the mycoflora of leaves of Triticum aestivum L.

86%

Blaszkowski J.

Acta Mycologica

|

1994

|

tom 29

|

nr 2

17

Effect of fungicide Topsin M70 WP [Thiophanate-methyl] on the survival of some indicator bacteria and enteric pathogens in lake water

86%

Niewolak S., Komar M., Golas I.

Polish Journal of Natural Sciences

|

2002

|

tom 10

18

The use of RP-HPTLC for modelling the hydrophobicity of fungicides

86%

Rozylo J. K., Matysiak J., Gumieniak A., Niewiadomy A.

Polish Journal of Environmental Studies

|

1998

|

tom 07

|

nr 1

The retention behaviour of eighteen new antifungal dihydroxythiobenzanilides in a reversed-phase high performance thin-layer chromatographic system has been examined. Using water-acetone as the mobile phase, a linear relationship between the volume fraction of the organic solvent and the log k' values over a limited range was established for every solute. The physico-chemical parameters of these compounds were characterized by their hydrophobicity parameters log k'w, determined by extrapolation of the linear relationships for retention data in binary solvent systems to pure water. The good correlation obtained between log k' and S values of TLC equation supports the validity of the extrapolation technique. It was found that log k'w values of examined substances were correlated to their antimicrobial activity. The results suggest that log k'w might be an accurate model for assessment of the hydrophobicity of studied fungicides in biological systems.

19

Chemical control of white rust [Albugo candida] on horseradish [Armoracia rusticana]

86%

Macias W., Robak J.

Vegetable Crops Research Bulletin

|

1999

|

tom 50

20

Novel methods of testing biological activity of seed dressing fungicides against snow mould Microdochium nivale

86%

Krzyzinska B., Maczynska A., Sikora H.

Journal of Plant Protection Research

|

2001

|

tom 41

|

nr 4

In the Institute of Plant Protection Branch in Sośnicowice an investigation was performed on establishing novel methods for testing biological activity or seed dressings against snow mould (Microdochium nivale). Seeds of winter wheat used for the experiments in artificial conditions were disinfected in sodium hypochlorite, subsequently infected with the pathogen, and treated with seed dressing fungicides (Baytan Universal 19.5 WS, Zaprawa Funaben T, Maxim 025 FS, Raxil Extra 515 FS and Vitavax 200 FS). In laboratory tests inoculation with conidial suspension was applied, and in climatic chamber experiments either conidial suspension or inoculum grown on sand-cornmeal medium was used. The field experiment with the same seed dressings was carried out on naturally infested plots, and the disease developed under snow cover lasting for 58 days. Two novel climatic chamber methods (Z and PK) proved to be suitable for testing biological activity of seed dressing fungicides against snow mould (M. nivale) as correlation coefficients with field results at P=0.05 were 0.9760 and 0.9453. Method Z was recognised as more suitable. Differences between seed dressings were statistically insignificant. The laboratory method was recognised as useful for controlling the pathogen (M. nivale), but its usefulness for controlling the disease (snow mould) may not be sufficient under a range of different winter conditions.

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