The evaluation of <i>Pythium oligandrum</i> and chitosan in control of <i>Phytophthora infestans</i> (Mont.) de Bary on potato plants

Kurzawińska, H.; Mazur, Stanisław

doi:10.2478/fhort-2013-0134

Cited by 8 publications

(7 citation statements)

References 5 publications

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“…Presowing treatment of pea seeds protected older plants against infection by Fusarium culmorum, F. oxysporum, Alternaria alternata, Boeremia exigua, Haematonectria haematococca, Gibberella avenacea, Peyronellaea pinodes and Thanatephorus cucumeris [9]. Chitosan was also used to dress the bulbs of ornamental plants [116] and in the protection of potato tubers against late blight and soft rot [117,118].…”

Section: Discussionmentioning

confidence: 99%

The Influence of Trichoderma harzianum Rifai T-22 and Other Biostimulants on Rhizosphere Beneficial Microorganisms of Carrot

et al. 2020

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The principles of good agricultural and horticultural practice, which consider both giving environmental protection and high yielding of plants, require modern cultivation methods. Modern cultivation of horticultural plants uses, for example, cover crops, living mulches, plant growth-promoting microorganisms (PGPMs), plant growth regulators (PGRs) and other biostimulants protecting the soil against degradation and plants against phytopathogens and stress. The purpose of field and laboratory studies was to determine the effect of Trianum P (containing Trichoderma harzianum Rifai T-22 spores), Beta-Chikol (a.s.—chitosan), Timorex Gold 24 EC (based on tea tree oil) and fungicide Zaprawa Nasienna T 75 DS/WS (a.s.—tiuram 75%) on the health of carrot (Daucus carota L.) plants and the microorganism population in the rhizosphere of this plant. Moreover, the antagonistic effect of rhizosphere fungi on selected carrot fungal pathogens was determined. Laboratory mycological analysis allowed one to determine the qualitative and quantitative composition of fungi colonizing the underground parts of carrot plants. In addition, the total population of fungi and bacteria was determined (including Bacillus sp. and Pseudomonas sp.) based on the microbiological analysis of the rhizosphere soil. The application of the plant growth-promoting fungus (Trichoderma harzianum T-22), chitosan and tea tree oil positively influenced the growth, development and health status of carrot plants. T. harzianum T-22, chitosan and fungicide most effectively protected carrots against infection by soil-borne fungi from the genus Alternaria, Fusarium, Haematonectria, Sclerotinia and Rhizoctonia. The rhizosphere population of Bacillus sp. and Pseudomonas sp. in the treatments with Trianum P or Zaprawa Nasienna T 75 DS/WS was bigger than in the other experimental treatments. A reverse relationship was observed in the population of rhizosphere fungi. T. harzianum T-22, chitosan and tea tree oil promoted the growth of antagonistic fungi (Albifimbria sp., Clonostachys sp., Penicillium sp., Talaromyces sp. and Trichoderma sp.) in the carrot rhizosphere. Antagonistic activity of these fungi towards Alternaria dauci, Alternaria radicina, Sclerotinia sclerotiorum and Rhizoctonia solani was higher after the application of the preparations compared to control. Consequently, Trianum P, Beta-Chikol and Timorex Gold 24 EC can be recommended as plant biostimulants in ecological agricultural production, including Daucus carota cultivation.

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Section: Discussionmentioning

confidence: 99%

The Influence of Trichoderma harzianum Rifai T-22 and Other Biostimulants on Rhizosphere Beneficial Microorganisms of Carrot

et al. 2020

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“…4). The low yield-protective efficiency of Pythium oligandrum in potato cultivation was also reported by Kurzawińska and Mazur (2009). However, the authors showed significantly lower infestation of leaves and tubers by P. infestans compared to the control plot after this preparation application.…”

Section: Resultsmentioning

confidence: 73%

Yield-protective efficiency of biological and chemical potato protection against Phytophtora infestans (Mont.) de Bary

Kołodziejczyk

2018

Acta Agroph.

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A b s t r a c t. Potato protection against blight is an indispensable element of cultivation technology in all production systems. Having in mind food safety and environmental protection, the goal is to limit the chemical protection of plants in favour of other methods, including biological ones. Therefore, the study aimed to evaluate an effect of chemical (Ridomil Gold MZ 68 WP and Infinito 687.5 SC, Flowbrix 380 SC), biological (Polyversum WP, Timorex Gold 24 EC, Biosept Active 33 SL) and integrated protection (alternate biopreparations and Flowbrix 380 SC) on tuber yield of early (Vineta) and moderately early (Red Fantasy) potato cultivars. The field experiment was carried out in the years 2012-2014 near Cracow, Poland (50º07'N, 20º05'E and altitude 271 m a.s.l.) in soil conditions of Luvic Chernozem, developed from loess. Potato protection against blight contributed to a significant increase in yield in all variants of protection, except Polyversum WP. Ridomil Gold MZ 68 WP and Infinito 687.5 SC fungicides were the most effective; their application resulted in 35% higher tuber yields compared to the control plants. Flowbrix 380 SC application caused a 22% yield increase, while plant extracts used individually and alternately with Flowbrix 380 SC fungicide resulted in 16-17% increase.

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“…As shown by the average values of the infection index, infection rates were significantly lower in protected plants than in unprotect-ed plants. Kurzawińska and Mazur (2009) demonstrated high efficacy of Polyversum used for tuber dressing and plant spraying in late blight control. The arbuscular mycorrhizal fungus (AMF -Glomus intraradices, G. mosseae reduced the populations of Erwinia carotovora, P. infestans, Verticillium dahliaae), is a dangerous pathogen of the plant family Solanacea (Bharadwaj et al 2008).…”

Section: Resultsmentioning

confidence: 99%

The effect of biological and chemical control agents on the health status of the very early potato cultivar Rosara

Cwalina-Ambroziak¹,

Damszel²,

Głosek-Sobieraj³

2015

Journal of Plant Protection Research

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The external appearance and quality of table potatoes are determined, among other factors, by the health status of the plants during the growing season. Chemical control methods are often combined with biocontrol agents to effectively fight potato pathogens. Potatoes of the very early cultivar Rosara were grown in experimental plots. The plots were located in Tomaszkowo (NE Poland, 2007-2009). The experiment involved the following treatments: 1) biological control − mycorrhizal Glomus spp. inoculum was applied to the roots, − tubers were dressed and plants were sprayed with Polyversum three times during the growing season, 2) chemical control - at two-week intervals, plants were sprayed with the following fungicides: Infinito 687.5 SC and Tanos 50 WG, Valbon 72 WG and Tanos 50 WG. In the control treatment, potato plants were not protected against pathogens. During the growing season, the severity of late blight and early blight was evaluated on a nine-point scale. The composition of fungal communities colonising potato stems was analysed. The fungistatic properties of the fungicides used in the field experiment were evaluated in an in vitro test. The symptoms of infections caused by Phytophthora infestans and Alternaria spp. were significantly reduced in the treatment which used the integrated chemical and biological control. The least diverse fungal community was isolated from fungicide-treated plants. In the in vitro test, fungicides at all analysed concentrations inhibited the linear mycelial growth of selected pathogens.

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The evaluation of Pythium oligandrum and chitosan in control of Phytophthora infestans (Mont.) de Bary on potato plants

Cited by 8 publications

References 5 publications

The Influence of Trichoderma harzianum Rifai T-22 and Other Biostimulants on Rhizosphere Beneficial Microorganisms of Carrot

The Influence of Trichoderma harzianum Rifai T-22 and Other Biostimulants on Rhizosphere Beneficial Microorganisms of Carrot

Yield-protective efficiency of biological and chemical potato protection against Phytophtora infestans (Mont.) de Bary

The effect of biological and chemical control agents on the health status of the very early potato cultivar Rosara

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