Anastomosis groups ofRhizoctonia solani on potato in central México and potential for biological and chemical control

Black scurf and stem canker on potato is an economically important disease complex, causing both quantitative and qualitative damage to potato crops which occurs in potato production areas throughout the world. The ribosomal DNA internal transcribed spacer sequence analysis is currently accepted and a commonly used method for classifying Rhizoctonia species and anastomosis groups (AGs). To date, 13 AGs have been recognized. The updated AG distribution in potato worldwide production areas confirm the status of AG‐3 as the most prevalent AG in potato and reflects the population dynamics of the pathogen probably due to global trading of tubers. As R. solani is a tuber‐ and soilborne pathogen, the ability to detect its levels in the seed tubers and in the soil and predict the potential damage is an important factor in controlling the disease. Effective disease management of Rhizoctonia disease requires implementation of an integrated disease management approach and knowledge of each of its stages. Although the most important control measures are cultural, chemical control (either by seed tuber‐ or in‐furrow treatments) is still an important tool in reducing the damages caused by R. solani.

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“…1986; Cedeno et al. 2001), AG‐4 (Anguiz and Martin 1989; Virgen‐Calleros et al. 2000; Truter and Wehner 2004) and AG‐5 (Bandy et al.…”

Section: Distribution Of R Solani Anastomosis Groups (Ags) On Potatomentioning

confidence: 99%

“…Also Kataria and Gisi (1999) reported several AGs being insensitive to pencycuron. Only pencycuron and tolclofos‐methyl afforded 100% inhibition of AG‐3 in vitro , whereas in the field, azoxystrobin and pencycuron showed the highest efficacy against sclerotial development on tubers (Virgen‐Calleros et al. 2000).…”

Section: Disease Controlmentioning

confidence: 99%

Biology, Epidemiology and Management of Rhizoctonia solani on Potato

Tsror

2010

Journal of Phytopathology

145

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“…Various fungicides such as benomyl, thiabendazole, carboxin, pencycuron and azoxystrobin (Virgen-Callerus et al 2000 ), fenpiclonil (Welsh and Callaghan 1996 ) are effective for control of the disease. Seed treatment with 3 % boric acid has been identifi ed as a safe and effective chemical treatment for the control of black scurf (Arora et al 2006a ).…”

Section: Managementmentioning

confidence: 99%

Pre and Post Harvest Diseases of Potato and Their Management

Arora

Sharma

2014

Fungal Biology

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“…azoxystrobin, benomyl, carbendazim, fluazinam, fludioxonil, imazalil, iprodione, mepronil, pencycuron, propiconazole, quintozene (PCNB), thiabendazole, thiram and tolclofos-methyl (Davis et al, 1971;Chand & Logan, 1982;Leach & Murdoch, 1985;Sumner, 1987;Jager et al, 1991;Olaya et al, 1994;Wicks et al, 1995;Virgen-Calleros et al, 2000), but mostly provided varying and inconsistent control. R. solani has acquired resistance to both protectant organic fungicides such as captan, dichlone, maneb, quintozene, thiram and tolclofos-methyl (Shatla & Sinclair, 1963;Elsaid & Sinclair, 1964;Meyer & Parmeter, 1968;Van Bruggen & Arneson, 1984) and to systemic fungicides such as benomyl, carboxin, dichlozoline, oxycarboxin, thiophanate-methyl and 2-(thiocyanomathylthio)-benzothiazole (TCMTB) (Martin et al, 1984).…”

Section: Chemical Controlmentioning

confidence: 99%