Incorporation of Brassica seed meal soil amendment and wheat cultivation for control of Macrophomina phaseolina in strawberry

Mazzola, Mark; Agostini, Aaron; Cohen, Michael F.

doi:10.1007/s10658-017-1166-0

Cited by 28 publications

(41 citation statements)

References 35 publications

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“…Nonchemical alternatives such as steam (Fennimore et al, 2014;Hoffmann et al, 2016), anaerobic soil disinfestation (Shennan et al, 2018), or soil solarization (Daugovish et al, 2016) are among those investigated. Chemical and biological alternatives such as plant residues and antimicrobial metabolites are active areas of research (Mazzola et al, 2017). Among the natural antimicrobial metabolites, several glucosinates have shown the potential to act as potent pesticides.…”

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confidence: 99%

“…Although those treatments can lead to the control of specific pathogens and nematodes, the efficacy of organic material containing AITC under field conditions is highly variable and depends on the soil structure, quality of plant residues, and environmental factors (Mazzola et al, 2017). The application of synthetic AITC has led to inconclusive results on weed, nematode, and pathogen control efficacy under field conditions Norsworthy, 2015, 2016;Vallad and Boyd, 2013).…”

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confidence: 99%

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Multitactic Preplant Soil Fumigation with Allyl Isothiocyanate in Cut Flowers and Strawberry

Hoffmann

Ajwa

Westerdahl

et al. 2020

hortte

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Allyl isothiocyanate (AITC) is a glucosinolate produced in cruciferous plant species. AITC is known to act as a pesticide on microorganisms, insects, and weeds. Synthetic AITC is registered as a biopesticide for agricultural soil treatment use in the United States and elsewhere in the world. Although a potent pesticide, reports on the weed and pathogen control efficacy of synthetic AITC applied as soil disinfectant are highly variable. Due to the low vapor pressure of AITC, questions remain as to whether pest and weed control efficacy can be improved by combining it with other chemicals. The objective of this study was to assess the control efficacy of AITC stand-alone applications vs. applications, in which AITC was combined with the standard-fumigants chloropicrin, 1,3-dichloropicrin, and methyl isothiocyanate. Two shank-applied on-farm field trials were conducted in cut flower [delphinium (Delphinium elatum), ranunculus (Ranunculus asiaticus)] fields, and two drip tape applied field trials in strawberry (Fragaria ×ananassa) fields in California. Weed pressure, weed seed viability, nematode survival, and pathogen survival of Pythium ultimum, fusarium wilt (Fusarium oxysporum), and verticillium wilt (Verticillium dahliae) were assessed. Cumulative yearly yield of marketable fruit was assessed in the strawberry field trials. The results of this study show that the use of AITC as a stand-alone treatment provided no consistent weed or pathogen control efficacy. However, our results also indicate that shank and drip applied multitactic fumigation approaches with AITC can efficiently control soil-borne diseases and weeds. These findings have potential implications, especially in those areas where certain fumigants are restricted due to regulations and/or availability.

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confidence: 99%

mentioning

confidence: 99%

Multitactic Preplant Soil Fumigation with Allyl Isothiocyanate in Cut Flowers and Strawberry

Hoffmann

Ajwa

Westerdahl

et al. 2020

hortte

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“…Crop rotation has been explored as a management technique for soilborne pathogens of strawberry. Alternating non-host crops with strawberries has the ability to reduce the incidence of soilborne pathogens (Xiao et al 1998), from the breakdown products of the crops and the incorporation of their residues (Subbarao et al 2007), or through manipulation of the soil microbial communities (Mazzola et al 2017). Most data generated in using crop rotation or cover crops for suppression of soilborne pathogens has focused on V. dahliae in strawberry, but little exists for M. phaseolina.…”

Section: Crop Rotationmentioning

confidence: 99%

“…Rotations with broccoli and the incorporation of its residues reduced V. dahliae microsclerotia in soil, and reduced wilt severity to levels achieved by metam sodium (Subbarao et al 1999). Mazzola et al (2017) identified that cropping with wheat (Triticum aestivum) cv.…”

Section: Crop Rotationmentioning

confidence: 99%

“…Changes in the microbial composition of the soil have been associated with mediating the incidence of disease and increasing the suppressiveness of a soil regarding plant infection (Mendes et al 2011). This is exemplified when amendments added to pasteurized soils consistently fail to reduce soil inoculum of disease or plant symptoms compared to non-pasteurized soils (Hewavitharana and Mazzola 2016;Mazzola et al 2017). In addition, it has been observed that the disease control due to the addition of organic amendments can depend on the substrate used and control efficacy may be pathogen specific (Hewavitharana and Mazzola 2016).…”

Section: Organic Amendmentsmentioning

confidence: 99%

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Evaluation of Host Resistance and the Utilization of Organic Amendments to Manage Macrophomina Crown Rot of Strawberry in California

Winslow¹

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The production of strawberries can be severely limited by soilborne plant pathogens, insects and weeds. Macrophomina phaseolina is a problematic soilborne fungal pathogen in California strawberry production inciting the disease Macrophomina crown rot. When established, the pathogen can cause extensive plant decline and mortality. Host resistance will be a critical tool for managing this disease and guiding breeding programs in the post methyl bromide era. Evaluation of host resistance in strawberry germplasm to M. phaseolina was evaluated through phenotypic assessments of disease incidence. A total of 90 strawberry cultivars and elite selections were included in a replicated field trial conducted in artificially inoculated soils to assess host resistance. Significant differences in levels of resistance and susceptibility were observed among genotypes tested in this trial. The five most resistant strawberry genotypes from highest to lowest in percent plant mortality were: UC-R, UC-G, UC-V, Manresa, and Osceola. The five most susceptible strawberry genotypes with the highest percent mortality in ranking order from highest to lowest were: UC-J, Ruby June, Festival, UC-Y, and UC-A. Of the genotypes tested in this trial UC-V, Manresa and Osceola could be characterized as highly resistant, but no complete resistance was observed. An additional study was conducted to correlate host symptom expression with the extent of pathogen colonization in different strawberry tissues, and to determine if resistant germplasm can contribute to secondary inoculum production in the field. An established qPCR method was utilized to quantify M. phaseolina colonization of strawberry tissues. There were significant effects for cultivar (P < 0.0001) as well as a significant two-way interaction of cultivar x sample time (P = 0.0083) on the concentration of M. phaseolina DNA detected in strawberry tissues. Expression of the resistant phenotype in strawberry cultivars was associated with limited plant colonization by M. phaseolina. The extent of colonization of a specific cultivar by M. phaseolina was dependent on the sample time after inoculation with the pathogen. In addition, the roots and crowns of a specific strawberry cultivar were equally colonized on a per plant tissue weight basis, but this provides only speculation into the mechanisms conferring host resistance. A third study was conducted to integrate host resistance of strawberry genotypes with the use of organic amendments in effort to mutually enhance the efficacy of each factor for the control of Macrophomina crown rot. Artificially inoculated potting substrate was amended with Brassica juncea mustard seed meal at a rate of 4.94 tons ha-1 (MSM), and anaerobic soil disinfestation utilizing rice bran at a rate of 22.24 tons ha-1 (ASD) were compared to a non-amended (UTC) and steam controls. The soil assay indicated that the ASD and steam treatments were able to reduce the CFU g-1 potting substrate of M. phaseolina by 99.7-100%. In addition, there were significant effects of soil t...

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The inhibitory effects of different types of Brassica seed meals on the virulence of Ralstonia solanacearum

Peng

Liu

Shen

et al. 2021

Pest Management Science

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BACKGROUND Understanding the specific inhibitory effects of different Brassica seed meals (BSMs) on soilborne pathogens is important for their application as biocontrol agents for controlling plant disease. In this study, the seed meals of Brassica napus L. (BnSM), Brassica campestris L. (BcSM), and Brassica juncea L. (BjSM), and the combined seed meal of BcSM and BjSM (CSM, 1:1), were selected for investigation. The inhibitory effects of these seed meals on the plant pathogen Ralstonia solanacearum (Smith) and tomato bacterial wilt, were assessed and compared. RESULTS All the BSMs significantly inhibited the growth of R. solanacearum in vitro. Furthermore, the BSMs could effectively suppress R. solanacearum virulence traits, including motility, exopolysaccharide production, dehydrogenase activity, virulence‐related gene expression, and colonization in the soil. Among them, BjSM showed the best inhibiting effects, and CSM displayed synergic toxicity against R. solanacearum. In addition, the predominant antibacterial compounds in BcSM and BjSM were identified as the volatile compounds, 3‐butenyl isothiocyanate and allyl isothiocyanate, respectively. Finally, pot experiment verified that the control effects of BjSM and CSM on tomato wilt reached more than 90%. CONCLUSION This is the first study to report on the ability of different kinds of BSMs to suppress the virulence of R. solanacearum and biocontrol efficiencies against bacterial wilt in tomato plants. Furtherly, the main antibacterial compounds in the BSMs were identified. The results demonstrated that CSM may possess potential for controlling bacterial wilt caused by R. solanacearum. The results provide a fresh perspective for comprehending the mechanism underlying BSM suppression of pathogens and plant disease.

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Incorporation of Brassica seed meal soil amendment and wheat cultivation for control of Macrophomina phaseolina in strawberry

Cited by 28 publications

References 35 publications

Multitactic Preplant Soil Fumigation with Allyl Isothiocyanate in Cut Flowers and Strawberry

Multitactic Preplant Soil Fumigation with Allyl Isothiocyanate in Cut Flowers and Strawberry

Evaluation of Host Resistance and the Utilization of Organic Amendments to Manage Macrophomina Crown Rot of Strawberry in California

The inhibitory effects of different types of Brassica seed meals on the virulence of Ralstonia solanacearum

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