Non-chemical approach to soilborne pest management – organic amendments

Gamliel, A.; Austerweil, Miriam; Kritzman, G.

doi:10.1016/s0261-2194(00)00112-5

Cited by 233 publications

(140 citation statements)

References 21 publications

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“…Many previous studies suggested that healthy plants exhibit higher soil microbial diversity compared to diseased plants (Bakker et al 2010;Brussaard et al 2007), while organic amendments could significantly improve microbial diversity. It has been reported that microbial diversity in the rhizosphere soils negatively correlated with occurrence of soil borne disease and positively correlated with the plant resistance to pathogens (Bailey and Lazarovits 2003;Bulluck and Ristaino 2002;Gamliel et al 2000). For example, fungal diversity was found to be negatively correlated with the incidence of brown stem rot of adzuki bean due to Acremonium gregatum (Nitta 1991), and Qiu et al (2012) found that disease severity index was lower in bio-fertilizer treatment with a higher microbial diversity.…”

Section: Introductionmentioning

confidence: 98%

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Hao

Zeng

et al. 2015

Antonie van Leeuwenhoek

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Rhizosphere and root-associated microbial communities are known to be related to soil-borne disease and plant health. In the present study, the microbial communities in rhizosphere soils and roots of both healthy and diseased Panax notoginseng were analyzed by high-throughput sequencing of 16S rRNA for bacteria and 18S rRNA internal transcribed spacer for fungi, to reveal the relationship of microbial community structure with plant health status. In total, 5593 bacterial operational taxonomic units (OTUs) and 963 fungal OTUs were identified in rhizosphere soils, while 1794 bacterial and 314 fungal OTUs were identified from root samples respectively. Principal coordinate analysis separated the microbial communities both in the rhizosphere soils and roots of diseased P. notoginseng from healthy plants. Compared to those of healthy P. notoginseng, microbial communities in rhizosphere soils and roots of diseased plants showed a decrease in alpha diversity. By contrast, bacterial community dissimilarity increased and fungal community dissimilarity decreased in rhizosphere soils of diseased plants, while both bacterial and fungal community dissimilarity in roots showed no significant difference between healthy and diseased plants. Redundancy analysis at the phylum level showed that mycorrhizal colonization and soil texture significantly affected microbial community composition in rhizosphere soils, whereas shoot nutrition status had a significant effect on microbial community composition in root samples. Our study provided strong evidence for the hypothesis that microbial diversity could potentially serve as an indicator for disease outbreak of medicinal plants, and supported the ecological significance of microbial communities in maintaining plant healthy and soil fertility.

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Section: Introductionmentioning

confidence: 98%

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Hao

Zeng

et al. 2015

Antonie van Leeuwenhoek

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“…The integrated approach to nematode management consists of chemical and biological practices. Due to the conservation pressure on the chemical control options, there is an urgent need for non-chemical alternatives in facilitating the management of soil-borne diseases and nematodes (Gamliel et al, 2000;Lazzeri et al, 2004b). In an integrated approach, the use of resistant cultivars, the choice of cover crops in a crop rotation system, organic matter and the use of green manure play important roles (Barker & Koenning, 1998;Widmer et al, 2002;Westphal, 2011).…”

Section: Introductionmentioning

confidence: 99%

Control Potential of Brassicaceae Cover Crops as Green Manure and their Host Status for Meloidogyne javanica and Criconemoides xenoplax

Kruger

Fourie

Malan

2015

SAJEV

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Laboratory bioassays were undertaken to determine the potential of Avena sativa cv. Pallinup (Pallinup oats), Sinapis alba cv. Braco (white mustard), Brassica napus cv. AV Jade (canola), Brassica juncea cv. Caliente 199 (Caliente) and Eruca sativa cv. Nemat (Nemat) to suppress Meloidogyne javanica (root-knot nematode) and Criconemoides xenoplax (ring nematode) when applied as green manure. The host status of the crops also was determined during glasshouse trials. Plant material of the different cover crops was macerated and mixed with nematode-inoculated soil. After a period of 14 and 28 days respectively, susceptible tomato plants were planted in the soil, where they were left to grow in a glasshouse, prior to the performance of a root gall index. The same procedure was followed for C. xenoplax, except that, in this case, the nematodes were extracted from the soil after 14 and 28 days to determine the impact of the plant biomass on nematode numbers. To determine the host status of the cover crops concerned, potted plants were inoculated with the two nematode species. Results from the bioassays showed significant suppression of M. javanica by white mustard, Caliente 199 and Nemat. However, no significant differences were found in the C. xenoplax bioassays. In the M. javanica glasshouse host trials, Nemat was classified as a poor host. In the C. xenoplax host trials, canola was found to have a suppressing effect on C. xenoplax. The results are the first to show the effect of biofumigation on C. xenoplax nematode.

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“…The presented studies showed, that oats and common vetch had the most positive effect on the populations of antagonistic bacteria and their antagonistic activity towards pathogenic fungi. According to Gamliel et al (2000), the development of Bacillus spp. and Pseudomonas spp.…”

Section: Resultsmentioning

confidence: 99%

Antagonistic activity of selected bacteria occurring in the soil after root chicory cultivation

Patkowska¹,

Konopiński²

2014

PLANT SOIL ENVIRON

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Chicory (Cichorium intybus L.) is a rich source of polysaccharides (intibin and inulin), vitamins, acids and mineral salts. The present studies determined the antagonistic activity of selected bacteria of the soil environment of root chicory towards fungi pathogenic towards this plant: Alternaria alternata, Botrytis cinerea, Fusarium culmorum, F. oxysporum, Thanatephorus cucumeris and Sclerotinia sclerotiorum. Root chicory was cultivated with using cover crops (oats, tansy phacelia and common vetch). The use of cover crops, especially oats, in the cultivation of root chicory had a positive effect both on the total population of bacteria and the population of Bacillus spp. and Pseudomonas spp. in the soil. Antagonistic Bacillus spp. and Pseudomonas spp. displayed differentiated activity towards the studied fungi. The greatest antagonistic effect was found out after the mulch of oats. After common vetch, the antagonistic activity of bacteria was more than twice, and after phacelia three times as low as after oats. In the traditional cultivation of root chicory this activity was nearly twelve times lower.

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Non-chemical approach to soilborne pest management – organic amendments

Cited by 233 publications

References 21 publications

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Control Potential of Brassicaceae Cover Crops as Green Manure and their Host Status for Meloidogyne javanica and Criconemoides xenoplax

Antagonistic activity of selected bacteria occurring in the soil after root chicory cultivation

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