Effectiveness of fumigants and grafting against tomato brown root rot caused byColletotrichum coccodes

Garibaldi, A.; Baudino, M.; Minuto, A.; Gullino, M. L.

doi:10.1007/bf03020294

Cited by 22 publications

(11 citation statements)

References 12 publications

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“…Upon visual examination, the root tissues can be seen to become blackish and to show cracks (Garibaldi et al. ). Previous research showed that among the most popular rootstocks used in Italy, ‘Beaufort’ seemed more sensitive to C. coccodes infection than ‘Energy’ and ‘He‐Man’ (Minuto et al.…”

Section: Introductionmentioning

confidence: 99%

Control of Colletotrichum coccodes on Tomato by Grafting and Soil Amendments

Gilardi¹,

Colla²,

Pugliese

et al. 2013

Journal of Phytopathology

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Section: Introductionmentioning

confidence: 99%

Control of Colletotrichum coccodes on Tomato by Grafting and Soil Amendments

Gilardi¹,

Colla²,

Pugliese

et al. 2013

Journal of Phytopathology

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“…Alternative fumigant research has yielded promising results, particularly for disease and nematode control, although the methods are often less effective in controlling some weeds, especially nutsedge (Cyperus spp. ), when compared to MBr (Culpepper et al 2006;Garibaldi et al 2008;Gilreath et al 2005;Harrison and Fery 1998;MacRae et al 2010;Yates et al 2002).…”

mentioning

confidence: 99%

Vegetable Crop Response to EPTC Applied Preemergence Under Low-Density Polyethylene and High Barrier Plastic Mulch

et al. 2012

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The continued phase-out of methyl bromide (MBr) challenges vegetable growers' abilities to control weeds in plasticulture production. Herbicides, such as EPTC (S-ethyl dipropylthiocarbamate), may be needed as part of a MBr alternative system. An experiment was conducted during the springs of 2008 and 2009 in Ty Ty, GA, to determine tomato, pepper, eggplant, and watermelon tolerance to EPTC applied under mulch. Treatments consisted of a factorial arrangement of four rates of EPTC (0, 2, 3, or 4 kg ai ha−1) and two plastic mulch types (low density polyethylene [LDPE] mulch or a high barrier mulch [HBM]). Each crop was planted 28 d after applying herbicides and laying mulch. EPTC, regardless of rate, applied under LDPE mulch did not impact plant growth, fruit number produced, or fruit weights for any crop. Conversely, pepper, tomato, and eggplant heights were reduced 65 to 72%, 30 to 75%, and 9 to 32%, respectively, by EPTC at 2 to 4 kg ai ha−1when applied under HBM. Similar trends were observed for crop yield; fruit number and weight were reduced by 71 to 84% for pepper, 36 to 76% for tomato, and 7 to 15% for eggplant when EPTC was applied at 2 to 4 kg ai ha−1as compared to the no EPTC HBM control. Watermelon stem lengths, fruit number, and fruit weights were not impacted by EPTC applied under HBM mulch. It appears as though HBMs reduce the loss of EPTC through volatilization, thereby increasing the dose present at time of planting. EPTC could be included as part of a MBr alternative system for tomato, pepper, eggplant, and watermelon when applied under LDPE mulch, and may also be applied at labeled rates with the HBM utilized in this experiment for watermelon.

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“…Soil fumigation with dimethyl disulfide at 40 or 80 g m -2 and metham sodium at 192 gm -2 were effective for control of root rot associated with C. coccodes s.l. in tomato (Garibaldi et al 2008). While control of fruit rot was not evaluated, the study shows that fumigation, although more environmentally toxic, may be an effective option for reducing primary inoculum.…”

Section: Conventional Control Methodsmentioning

confidence: 99%

“…However, only a few papers on tomato anthracnose confirmed the genetic identity of the organism used (Gutierrez et al 2006;Jelev et al 2008;Vichova et al 2012;and Diao et al 2014). Most earlier studies did not (Dillard 1989;Sanogo et al 2003;Costa et al 2006;Aqeel et al 2008;Minuto et al 2008;Nitzan et al 2008;Ben-Daniel et al 2009). Modern molecular analysis reveals that any one of the four thus-far known causal agents of tomato anthracnose may have been the subject of earlier studies.…”

Section: Colletotrichum Coccodes Sl and Others: Understanding Divermentioning

confidence: 99%

“…Until recently, Colletotrichum coccodes was considered to be the sole causal agent of tomato anthracnose (Sanogo 2003;Dillard and Cobb 1998;Dillard 1989 a, b;Costa et al 2006;Aqeel et al 2008;Minuto et al 2008;Nitzan et al 2008;Ben-Daniel et al 2009). This is likely due to a combination of morphological ambiguity and assumption of host specificity.…”

Section: Colletotrichum Coccodes Sl and Others: Understanding Divermentioning

confidence: 99%

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Interactions of brown marmorated stink bug, Colletotrichum acutatum and trap crops in organic tomato production

Voshell¹

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Colletotrichum spp. (Ascomycota) cause anthracnose of tomato fruits (Solanum lycopersicum). Halyomorpha halys, the Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) is an invasive insect that injures tomato fruits with a piercing/sucking mouthpart. To determine if H. halys feeding increases incidence of anthracnose on tomato fruit, five experiments were conducted. A 21-day transmission study was performed using detached fruits inside plastic containers in an incubator at 22°C. Tomato fruits receiving stink bugs with Colletotrichum inoculum had significantly higher anthracnose incidence than fruit receiving Colletotrichum inoculum only. A treatment using infested stink bugs (H. halys was placed in a petri dish of sporulating C. acutatum for 24h) to assess transmission had significantly higher anthracnose incidence than the sterilized water control. In a stink bug wounding treatment (H. halys was placed in the container with tomato fruits for 7 days, removed, and Colletotrichum inoculum was sprayed), anthracnose incidence was significantly less than in a stink bugs + inoculum treatment at 10 and 17 days, but these treatments did not differ at 21 days. A whole plant study was performed inside insect rearing and observation cages for 17 days. Anthracnose incidence on fruits of plants with stink bugs + inoculum was significantly greater than on all other treatments. Anthracnose incidence in the stink bug transmission and inoculum only treatments was significantly greater than with water controls or stink bug only treatments. In a field experiment using whole plants, 0, 1, 3, and 9 H. halys nymphs were added to mesh sleeves fitted around tomato fruit clusters for periods of 5 and 10 days. Number of stink bugs explains more of the variation (P<0.001) in Colletotrichum incidence than days in sleeve (P=0.1095). The two-way interaction between the days in sleeve and stink bug number was not significant (P=0.6627). When averaged across days in sleeve, anthracnose incidence was higher in treatments with nine stink bugs than treatments with zero, one, or three stink bugs (P<0.10). Fungi were isolated from H. halys fed on infected tomatoes in the lab. Stylets and legs were cultured on Yeast extract/sucrose agar to isolate colonies of C. acutatum. C. acutatum was recovered from either leg or stylet of 37.5% of insects feeding on infected fruit but not from control groups. A large scale field study was conducted in 2013 to evaluate whether insect feeding scars on tomato fruits were correlated with presence of Colletotrichum spp. Trap crops of sunflower and corn were established around tomatoes to deter insect feeding on tomatoes. Visual sampling for H. halys and other pentatomids was performed weekly. The field trials were repeated in 2014, however only sunflower was evaluated as a trap crop in 2014. H. halys populations were low in both seasons. No significant differences in H. halys population densities were found between trap crop treatments in 2013. Feeding scars were positively correlated with anthracnose incidence (R=0....

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Effectiveness of fumigants and grafting against tomato brown root rot caused byColletotrichum coccodes

Cited by 22 publications

References 12 publications

Control of Colletotrichum coccodes on Tomato by Grafting and Soil Amendments

Control of Colletotrichum coccodes on Tomato by Grafting and Soil Amendments

Vegetable Crop Response to EPTC Applied Preemergence Under Low-Density Polyethylene and High Barrier Plastic Mulch

Interactions of brown marmorated stink bug, Colletotrichum acutatum and trap crops in organic tomato production

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