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1
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Effectiveness of some chemical strategy protection of potato against an early blight [Alternaria solani]

100%
Osowski J.
Journal of Plant Protection Research
|
2003
|
tom 43
|
nr 4
361-368
2
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Efficacy of some selected fungicides against early blight [Alternaria spp.] on potato crops

100%
Kapsa J., Osowski J.
Journal of Plant Protection Research
|
2003
|
tom 43
|
nr 2
3

Możliwość wykorzystania cynku w ochronie ziemniaka przed alternariozą

84%
Osowski J.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2005
|
nr 237-238
187-193
W latach 2003–2004 prowadzono w Boninie doświadczenia z wykorzystaniem nawozów dolistnych do ograniczania rozwoju alternariozy na roślinach ziemniaka. W doświadczeniu oceniano 6 różnych wariantów ochrony. Najwyższą skuteczność w ograniczaniu rozwoju choroby uzyskano dla wariantu 2 × Basfoliar 12-4-6 w dawce 2,0 l/ha (86,0%) i 2 × ½ ochrony (dawki zmniejszone o 50%) + Basfoliar 12-4-6 w dawce 2,0 l/ha (85,3%).
4
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Genetic variability and host specialization in Alternaria alternata colonizing Solanaceous crops in Sudan

84%
Abbo A. S., Idris M. O., Elballa M. A., Hammad A. M., El Sidding M. A. R., Karlovsky P.
Journal of Plant Protection Research
|
2018
|
tom 58
|
nr 3
Early blight disease caused by Alternaria sp. is one of the most devastating diseases of Solanaceous crops widely distributed in Sudan. The aim of this study was to determine the genetic variation among different Alternaria isolates recovered from different Solanaceae crops showing typical symptoms of early blight disease. Infected leaves of tomato, potato, eggplant and pepper were collected from different geographical zones in Sudan. The recovered fungal isolates were identified to the genus level based on cultural and morphological characteristics. Five representative isolates were sent to the CABI Bioscience, U.K. for confirmation. The genetic relationship among the isolates was determined using the amplified fragments length polymorphism (AFLP) technique and the generated data were used to create similarity matrices using the PAST 3.01 software package. Dendrograms were constructed based on Jaccard’s similarity coefficients. A total of 70 fungal isolates was recovered from the tested plants and all of them showed morphological characteristics typical of Alternaria spp. The conidia appeared in multiple-branched chains with spore sizes in the range of 2.38−13.09 μm × 12.30−43.63 μm. Therefore, the isolates were identified as Alternaria alternata (Fr.) Keissl. The identification was then confirmed by CABI.AFLPbased dendrogram which revealed five clusters with a significant cophenetic correlation coefficient (r = 0.834) between the dendrogram and the original similarity matrix irrespective of their geographical origins. Eighteen (75%) of the Alternaria isolated from tomato leaves were clustered together in cluster I and five isolates formed two separate clusters, viz. cluster IV (T-Kh5 and T-H1) and cluster V (T-H4 and T-Med2). The remaining isolate, T-Am5, grouped with one of the potato isolates in cluster III. The other isolates which were recovered from potato, pepper and eggplants were all separated from the tomato isolates in the largest cluster.
5

Salts application for suppressing potato early blight disease

84%
El-Mougy N. S., Abdel-Kader M. M.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 4
353-361
The suppressive effect of sodium and calcium salts applied individually or combined with the yeast Saccharomyces cerevisiae against Alternaria solani the causal agent of early blight disease of potato was evaluated under laboratory, greenhouse and field conditions. In vitro test a complete inhibition in fungal growth was observed at concentration of 30 mg/ml of both sodium bicarbonate and calcium chloride. The commercial backing yeast S. cerevisiae (CBY) enhanced the inhibitory effect of tested salts reflected in increasing mycelial fungal growth reduction when combined at the rate of 1:1 at each concentration tested. In pot experiment, under artificial infestation with pathogenic fungus, application of sodium bicarbonate or calcium chloride significantly reduced the early blight incidence and severity by increasing their concentrations. Their most effective concentration were 30 mg/ml that reduced the disease incidence by 50 and 62.4%, respectively. Superior effect of sodium bicarbonate or calcium chloride in disease reduction was observed when they combined with CBY. Field trails for evaluating the most promising greenhouse treatments were preformed under natural infestations during two successive summer seasons. Calcium chloride proved higher efficacy for reducing both disease incidence and severity than that of sodium bicarbonate when applied either alone or combined with CBY. Also, it is observed that increasing concentrations of both sodium bicarbonate or calcium chloride showed parallel decrease in disease incidence and severity. Application of (CBY) enhanced the efficacy of salts spraying against early blight disease. Similar trend was also observed with the increase of potato tubers yield. On the light of the present study it could be suggested that the usage of combined application of the yeast S. cerevisiae with sodium bicarbonate or calcium chloride might be used as easily applied, safely and cost effective control methods against such plant diseases.
6

Effect of some essential oils for limiting early blight [Alternaria solani] development in potato field

84%
El-Mougy N. S.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 1
57-62
The fungicidal effect of some essential oils against Alternaria solani one of the species that cause early blight of potato was evaluated under in vitro and field conditions. Effect of carnation, caraway, thyme oils and the chemical fungicide Ridomil MZ 72 at various concentrations on mycelial growth of A. solani was tested. Carnation oil had the strongest and most extensive inhibitory effect on fungal growth. Slightly less effective were caraway and thyme oils followed by the chemical fungicide. Extended field trails for two cultivation seasons proved that the application of essential oils twice as foliar spray had a superior effect to the fungicide treatment for reducing the early blight incidence comparing with untreated control. An opposite relationship between the disease incidence and concentrations of applied essential oils was observed. The increase in potato yield also followed the same trend. The highest reduction in disease incidence and yield increase was recorded in treatments with 1% of carnation, caraway and thyme oils in descending order. Ridomil MZ 72 applied at the dose recommended by manufactories had a low effect in this regard. Essential oils treatments might be used as easily applied, safe and cost effective control methods against such plant diseases.
7

Nasilenie i zwalczanie patogenow wystepujacych w uprawach ziemniaka w 2003 roku

67%
Osowski J., Bernat E., Gawinska-Urbanowicz H., Kapsa J.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2004
|
nr 233
259-264
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Ochrona plantacji ziemniaka przed alternarioza

67%
Osowski J.
Ziemniak Polski
|
2004
|
tom 14
|
nr 2
23-25
9

Nowy, innowacyjny fungicyd w zwalczaniu zarazy i alternariozy ziemniaka w 2006 r.

67%
Kwiatkowski B.
Ziemniak Polski
|
2006
|
tom 16
|
nr 2
37-38
10

Effectiveness of selected fungicides in potato protection against Phytophthora infestans and Alternaria spp.

67%
Cwalina-Ambroziak B., Trojak A.
Polish Journal of Natural Sciences
|
2011
|
tom 26
|
nr 4
An exact micro-plot experiment was conducted to determine the effect of fungicides (treatments: Sandofan Manco 64 WP, Penncozeb 80 WP, Tanos 50 WG; Tanos 50 WG applied three times; Tanos 50 WG, Penncozeb 80 WP, Tanos 50 WG) on the severity of late blight and early blight in three potato cultivars and on the composition of fugal communities colonizing potato leaves. The tested fungicides significantly reduced the intensity of late blight and early blight. The efficacy of fungicidal control was affected by weather conditions and potato cultivars. The highest efficacy (30–36%) against late blight and early blight was noted in potato plants cv. Aster sprayed with Sandofan Manco 75 WG, Penncozeb 80 WP, Tanos 50 WG and Tanos 50 WG applied three times in the first year of the study. Sandofan Manco 75 WG, Penncozeb 80 WP, Tanos 50 WG, and Tanos 50 WG and Penncozeb WP 80 used alternately during the last two last growing seasons were most effective in late blight control in potato cv. Tara and Salto. In these cultivars, early blight was best controlled with Tanos 50 WG applied three times, and Tanos 50 WG and Penncozeb 80 WP used alternately. The lowest counts of Alternaria spp. – the causal agent of early blight – were isolated from potato leaves in the above treatments.
11

Skutecznosc roznych fungicydow zawierajacych mankozeb w ograniczaniu rozwoju alternariozy ziemniaka w badaniach polowych i laboratoryjnych

67%
Osowski J.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2004
|
nr 233
295-302
12

Zastosowanie pulapki Burkarda do okreslania skladu gatunkowego rodzaju Alternaria w uprawach ziemniaka

67%
Kapsa J.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2007
|
nr 244
223-229
13

Rola i znaczenie grzybow z rodzaju Alternaria w wywolywaniu alternariozy lisci i bulw ziemniaka

67%
Kuczynska J.
Biuletyn Instytutu Ziemniaka
|
1992
|
nr 41
57-72
14
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Potrzeba i mozliwosci zwalczania alternariozy ziemniaka

67%
Osowski J.
Ziemniak Polski
|
2001
|
nr 2
19-22
15

Choroby ziemniakow

67%
Pasko T.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
|
1997
|
nr 02
14-15
16

Nowe problemy w ochronie upraw ziemniaka przed alternarioza i zaraza

67%
Kapsa J.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2004
|
nr 232
315-324
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Spatial distribution of early blight disease on tomato, climatic factors and bioefficacy of plant extracts against Alternaria solani

67%
Hussain A., Ali S., Abbas H., Ali H., Hussain A., Khan S. W.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 6
Information on the spatial variability in plant disease is essential for location-based disease management. In the current study, the spatial distribution of tomato early blight disease was ascertained in District Gilgit, GilgitBaltistan, Pakistan. The comprehensive field survey was carried in two growing seasons (2014–2015), whereas in each growing season, 62 tomato fields were surveyed. Based on the distribution of disease, the respective thematic maps (incidence and severity) were prepared using Arc Map 10.1 with spatial analyst function of Arc GIS software by means of the inverse distance weight (IDW) interpolation method. Results indicate that early blight of tomato is spatially distributed in both growing seasons. However, in the first growing season, the disease incidence ranged from 10.22% to 44.16% and during later season 14.03–49.16%, whereas 5.37–16.40% and 6.52–26.94% severity was recorded. Furthermore, this information indicates that higher disease infestation occurred in 2015 in relation to 2014. This information linked to metrological data (temperature, precipitation and relative humidity), seemingly favored the early blight development during the growing period. Seven botanical extracts were tested against pathogen Alternaria solani at different concentrations (4, 6 and 8%). Results revealed that all tested plant extracts showed antifungal activities. However, at 8% concentration of plant extract, Datura starmonium, Berberis orthobotry, Podophyllum emodi and Uretica dioica exhibited >60%, while Peganum harmala, Artemisia maritima and Capparis spinosa <60% antifungal properties. The information generated due to this study could help the tomato growers regarding disease management and selection of resistant cultivars, improving profitability and food security in the Gilgit region.
18

Early blight [Alternaria spp.] in potato crops in Poland and results of chemical protection

67%
Kapsa J.
Journal of Plant Protection Research
|
2004
|
tom 44
|
nr 3
231-238
In the years 2000–2003 under Polish climatic conditions early blight occurred at different level of incidence on over 90.6% of surveyed fields. Time of disease appearance in different regions was closely related to climatic conditions. On average, early blight appeared on potato plants 59.3 days after planting, earlier than late blight. In the years 2001–2003, efficacy of six selected fungicides in early blight control was examined in field conditions. Experiments carried out in the Department of Potato Protection and Seed Science of Plant Breedingand Acclimatization Institute. Field trials located in two sites – at Bonin and Stare Olesno revealed much slower development of early blight on these fields where chemical protection was applied as compared to untreated control. Efficacy of plant protection program carried out in Bonin over three years varied from 40% to 63.9%. Effectiveness of selected products was higher in Stare Olesno at higher infection pressure, and ranged from 49.8% to 66.6%. However, efficiency of chemical protection in early blight suppressing is not as satisfactory as in late blight control. In field experiments good control of early blight resulted in tuber yield increase. In Bonin yield increase varied from 5.5 to 24.2% and in Stare Olesno from 12.2 to 34.4%.
19

Nasilenie wystepowania wazniejszych chorob ziemniaka w zaleznosci od plodozmianu

67%
Cwalina-Ambroziak B., Czajka W., Adamiak J., Rychcik B.
Progress in Plant Protection
|
2000
|
tom 40
|
nr 2
688-691
20

Nowe mozliwosci chemicznej ochrony ziemniaka przed alternarioza i zaraza ziemniaka przy uzyciu fungicydu Pyton Consento 450 SC

67%
Bernat E.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2004
|
nr 233
303-308
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