Field Survival of<i>Phoma proboscis</i>and Synergism with Herbicides for Control of Field Bindweed

Heiny, Dana Kelly

doi:10.1094/pd-78-1156

Cited by 28 publications

(25 citation statements)

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“…Similar results have been reported from other studies; Sharon et al (1992) demonstrated on sicklepod (Cassia obtusifolia L.) that use of glyphosate at a sub-lethal rate allowed for a reduction of inoculum dose of the biocontrol agent Alternaria cassiae Jurair & Khan by five times without sacrificing the efficacy. Heiny (1994) reported that the addition of 2,4-D plus MCPP in combination with Phoma proboscis Heiny at 10 7 conidia/ml achieved the same control of field bindweed (Convolvulus arvensis L.) as the fungus alone applied at 10 8 conidia/ml. There are also opportunities to lower rates of herbicides as demonstrated in control of Setaria viridis (L.) Beauv.…”

Section: Discussionmentioning

confidence: 95%

“…and Abutilon theophrasti Medic. (Caulder and Stowell, 1988;Wymore and Watson, 1989;Heiny, 1994;. Often this synergy derives from herbicide impact on secondary metabolism of weeds (Sharon et al, 1992), predisposing the plant and lowering its resistant responses against fungal infection (Hoagland, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…Often this synergy derives from herbicide impact on secondary metabolism of weeds (Sharon et al, 1992), predisposing the plant and lowering its resistant responses against fungal infection (Hoagland, 1996). As a result, lower doses of fungal inoculum may be required for weed control (Heiny, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Effect of plant stage, Colletotrichum truncatum dose, and use of herbicide on control of Matricaria perforata

Graham¹,

Peng²,

Bailey³

et al. 2006

BioControl

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Colletotrichum truncatum (Ct) was examined in a tank mix with the herbicide 2,4-D, clopyralid plus MCPA (Caurtail M Ò ), or metribuzin (Sencor Ò ) for control of scentless chamomile at 8-(younger) and 11-leaf stages (older) under controlled conditions. In initial trials, Ct at 7 Â 10 6 spores/ml (200 l/ha) reduced the fresh weight of scentless chamomile only slightly. However, its combinations with herbicides improved the efficacy variably depending on the herbicide used and stage of the weeds. Ct plus 2,4-D reduced the fresh weight by about 50% at both leaf stages of scentless chamomile when compared to untreated controls but no plants were killed. The fungus plus Curtail M consistently killed younger but not older plants, and the efficacy was substantially greater than that of the herbicide alone. The herbicide Sencor was highly effective on younger plants, and adding Ct did not achieve additional benefits. On older plants, however, Ct plus Sencor was substantially more effective than the herbicide alone, causing 76% fresh-weight reduction when compared to controls and killing 9 out of 16 older plants in four trials. Sencor applied alone reduced the fresh weight of older plants by 65%, but no plants were killed. Tested at doses ranging from 2 Â 10 6 to 20 Â 10 6 spores/ml, Ct plus Curtail M was most effective at the highest fungal inoculum dose, consistently killing younger but not older plants. In comparison, Ct at a medium dose (7 Â 10 6 spores/ml) plus Sencor killed the majority of older chamomile plants (7 out of 12), whereas the herbicide alone did not cause plant mortality. Further increasing fungal inoculum dose from this medium level did not enhance the weed control by Ct plus Sencor.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Effect of plant stage, Colletotrichum truncatum dose, and use of herbicide on control of Matricaria perforata

Graham¹,

Peng²,

Bailey³

et al. 2006

BioControl

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“…Some attempts to evaluate this diverse genus as bioherbicides have been reported. For example, Heiny [39,40] isolated a highly host specific strain of P. proboscis from diseased field bindweed (Convolvulus arvensis L.). Heiny and Templeton [37] reported significant bioherbicidal effects when conidia of this fungus were applied to weed seedlings, under temperatures from 16-28 °C, and ≥9 h dew period and the compatibility with synthetic herbicides was investigated [40].…”

Section: Disease Progression Of P Commelinicola On C Diffusa Under mentioning

confidence: 99%

“…For example, Heiny [39,40] isolated a highly host specific strain of P. proboscis from diseased field bindweed (Convolvulus arvensis L.). Heiny and Templeton [37] reported significant bioherbicidal effects when conidia of this fungus were applied to weed seedlings, under temperatures from 16-28 °C, and ≥9 h dew period and the compatibility with synthetic herbicides was investigated [40]. Studies of environmental factors on the effectiveness of a Phoma herbarum strain against Commelina communis showed that temperatures of 28-32 °C and a 48-h dew period were required for optimal control [41].…”

Section: Disease Progression Of P Commelinicola On C Diffusa Under mentioning

confidence: 99%

Biological Control of Spreading Dayflower (Commelina diffusa) with the Fungal Pathogen Phoma commelinicola

2015

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Greenhouse and field experiments showed that conidia of the fungal pathogen, Phoma commelinicola, exhibited bioherbicidal activity against spreading dayflower (Commelina diffusa) seedlings when applied at concentrations of 10 6 to 10 9 conidia· mL −1 .Greenhouse tests determined an optimal temperature for conidial germination of 25 °C -30 °C, and that sporulation occurred on several solid growth media. A dew period of ≥ 12 h was required to achieve 60% control of cotyledonary-first leaf growth stage seedlings when applications of 10 8 conidia· mL −1 were applied. Maximal control (80%) required longer dew periods (21 h) and 90% plant dry weight reduction occurred at this dew period duration. More efficacious control occurred on younger plants (cotyledonary-first leaf growth stage) than older, larger plants. Mortality and dry weight reduction values in field experiments were ~70% and >80%, respectively, when cotyledonary-third leaf growth stage seedlings were sprayed with 10 8 or 10 9 conidia· mL −1 . These results indicate that this fungus has potential as a biological control agent for controlling this problematic weed that is tolerant to the herbicide glyphosate.

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Effects of Selected Herbicides on the Germination and Infection Process of Puccinia lagenophora, a Biocontrol Pathogen of Senecio vulgaris

Wyss¹,

Müller‐Schärer

2001

Biological Control

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Field Survival ofPhoma proboscisand Synergism with Herbicides for Control of Field Bindweed

Cited by 28 publications

References 0 publications

Effect of plant stage, Colletotrichum truncatum dose, and use of herbicide on control of Matricaria perforata

Effect of plant stage, Colletotrichum truncatum dose, and use of herbicide on control of Matricaria perforata

Biological Control of Spreading Dayflower (Commelina diffusa) with the Fungal Pathogen Phoma commelinicola

Effects of Selected Herbicides on the Germination and Infection Process of Puccinia lagenophora, a Biocontrol Pathogen of Senecio vulgaris

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