The effect of cover crops on the fungal and bacterial communities in the soil under carrot cultivation

Patkowska, Elżbieta; Błażewicz‐Woźniak, Marzena; Konopiński, M.; Wach, Dariusz

doi:10.17221/117/2016-pse

Cited by 22 publications

(10 citation statements)

References 3 publications

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“…In particular, the use of white mustard stimulated the development of antagonists, mainly Trichoderma spp., which was like in the studies by Kraska and Mielniczuk (2012) and Patkowska et al (2016). The activity and effects of beneficial rhizosphere microorganisms on plant health are well documented for fungi from genus Trichoderma, Gliocladium and non-pathogenic Fusarium (Dias et al 2015).…”

Section: Resultssupporting

confidence: 61%

The influence of catch crops on fungal diversity in the soil and health of oat

Mielniczuk¹,

Patkowska²,

Jamiołkowska³

2020

Plant Soil Environ.

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The aim of the research was to determine the quantitative and qualitative composition of soil-borne fungi in the cultivation of oat, as well as to assess the healthiness of this cereal. The experiment considered spring barley and potato as forecrops, and white mustard or lacy phacelia cultivated after spring barley as catch crops before oat. The population of fungi showing antagonistic effect towards selected fungi pathogenic to cereal was determined. The most fungi (pathogenic and antagonistic) were found in the soil under oat cultivation after spring barley, while the least after potato. The cultivation of oat after spring barley with the use of catch crops significantly influenced a reduction in the number of fungi obtained from the soil. On the other hand, catch crop cultivation increased the share of antagonists in the soil fungus population. Among the species recognised as antagonistic, Clonostachys rosea, Trichoderma viride, T. koningii, and T. harzianum predominated. The introduction of catch crops, especially white mustard, also positively influenced the healthiness of oat. The average disease index for the tested oat cultivars grown after potato and after spring barley with white mustard and lacy phacelia as catch crops was 11.02, 12.78 and 15.90, respectively, whereas after spring barley it was 21.75.

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Section: Resultssupporting

confidence: 61%

The influence of catch crops on fungal diversity in the soil and health of oat

Mielniczuk¹,

Patkowska²,

Jamiołkowska³

2020

Plant Soil Environ.

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“…Large populations of Pseudomonas spp. were also found with cover crop use in carrot cultivation [70] and cover crops of oat and spring vetch in Scorzonera cultivation [71].…”

Section: Discussionmentioning

confidence: 77%

Impact of Cover Crop Usage on Soilborne Diseases in Field Nursery Production

et al. 2019

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Soilborne pathogens are a significant economic problem for nursery production in the Southeastern United States. The goal of this study was to determine the impact of cover crops on soilborne disease suppressiveness in such systems. Soils from red maple (Acer rubrum L.) plantation fields grown with and without cover crops were sampled, either while the cover crops were growing (pre-disked) or post-season, following cover crop incorporation into the soil (post-disked). Greenhouse bioassays were conducted using red maple seeds on inoculated (with Rhizoctonia solani (J.G. Kühn) or Phytophthora nicotianae (Breda de Haan)) and non-inoculated field soils. The damping-off, root rot disease severity, percent recovery of Rhizoctonia and Phytophthora, and pseudomonad population were examined during the two years of the experiment. Results showed that cover crop incorporation was beneficial for inducing disease supressiveness characteristics of soil. Cover crop incorporation into the soil significantly or numerically reduced disease severity and pathogen recovery in infested soil compared to the bare soil treatment. Cover crop incorporation was found to be partially associated with the reduction of seedling damping-off. The pseudomonad microbial population was greater when cover crop was present, and is thought to be antagonist to soilborne pathogens. Therefore, cover crops can be integrated in field nursery production systems to suppress soilborne pathogens.

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“…As reported by Li et al [125], the growth of soil-borne pathogens can be modified by root exudates. Earlier studies [41] showed the high efficacy of cover crops (buckwheat, white mustard and rye) in limiting the number of soil-borne fungi in carrot cultivation.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the principles of good agricultural and horticultural practice, taking into account both environmental protection and high yielding of plants, require modern cultivation methods. Modern cultivation of horticultural plants, including carrots, applies cover crops, living mulches, PGPMs (plant growth-promoting microorganisms) and PGRs (plant growth regulators) protecting the soil against degradation and plants from phytopathogens and stress [14,[41][42][43][44][45][46][47].…”

Section: Introductionmentioning

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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The effect of cover crops on the fungal and bacterial communities in the soil under carrot cultivation

Cited by 22 publications

References 3 publications

The influence of catch crops on fungal diversity in the soil and health of oat

The influence of catch crops on fungal diversity in the soil and health of oat

Impact of Cover Crop Usage on Soilborne Diseases in Field Nursery Production

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

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