Evaluation of in-furrow fungicide treatments to control rhizoctonia root rot of wheat

Influence of fungicidal seed treatments and soil type on severity of root disease caused by Rhizoctonia solani AG-8 on wheat

“…In contrast, Cotterill (1991) observed no effect on root disease severity of wheat from flutolanil applied on clay granules at 400 g a.i./ha, but there was an increase in shoot weight. However, Cotterill (1991) did find an increase in root weight from treating with flutriafol, tebuconazole, or diniconazole, and this was due to disease control as there was no increase in plant growth in uninoculated plants. Further, Cotterill (1991) also found that diniconazole could both reduce disease severity and increase shoot weight.…”

“…Examples include control of sheath blight of rice by tolclofos methyl and propiconazole þ benomyl (Hirooka et al, 1989;Taneja and Grover, 1982), control of blight of tall fescue by carboxin, triadimefon, iprodione and chlorothalonil (Martin et al, 1984), control of damping-off of mung bean by thiabendazole, benomyl and thiophanate methyl (Kataria and Grover, 1978), control of root rot of cowpea by quintozene (Gangopadhyay and Grover, 1986), and the control of root rot of subterranean clover using thiram, propamocarb and/or other chemicals as seed treatments (Barbetti et al, 1987a) or using benomyl, iprodione and/or other chemicals as soil drenches (Barbetti et al, 1987b). In contrast, Cotterill (1991) observed no effect on root disease severity of wheat from flutolanil applied on clay granules at 400 g a.i./ha, but there was an increase in shoot weight. However, Cotterill (1991) did find an increase in root weight from treating with flutriafol, tebuconazole, or diniconazole, and this was due to disease control as there was no increase in plant growth in uninoculated plants.…”

“…Several earlier reports have highlighted seed treatments (rather than soil treatments) as ideal means to target and deliver fungicides to counter R. solani AG-8 or other soil-borne pathogens of cereals (e.g., Cook, 2001;Cotterill, 1991;Cotterill et al, 1990;Smiley and Patterson, 1995). In terms of environmental benefits, fungicide delivery via seed treatment means much less fungicide per hectare is needed to achieve an equivalent rate of disease control as compared with the amount needed by soil application (Smiley and Patterson, 1995).…”

Synthesis and Biological Evaluation of 1,2,4-Triazole Thioethers as Both Potential Virulence Factor Inhibitors against Plant Bacterial Diseases and Agricultural Antiviral Agents against Tobacco Mosaic Virus Infections

“…Elaborate observations found that the triazole skeleton serving as the key pharmacophore has been steadily explored and developed in the discovery of new pesticides. For instance, the representative systemic triazole fungicides, including triadimefon, difenoconazole, triadimenol, propiconazole, tetraconazole, diniconazole, mefentrifluconazole, and myclobutanil, have become a kind of most commonly used agrochemicals against fungal infections of crops. In a variety of triazole scaffolds, 1,2,4-triazole was widely concerned in view of the multipurpose biological effects after hybridization of this versatile core. − Especially, the attractive antimicrobial and antiviral profiles were normally empowered to its derivatives (Figure ).…”

Soybean Yield Response to In‐furrow Fungicides, Fertilizers, and Their Combinations

“…In‐furrow fungicide applications have been evaluated in other crops including barley ( Hordeum vulgare L.), cotton ( Gossypium hirsutum L.), wheat ( Triticum aestivum L.), and sugar beet ( Beta vulgaris L.) for management of Rhizoctonia root rot (Cotterill, 1991; Cotterill, 1993; Hancock et al, 2004; Kiewnick et al, 2001; Stump et al, 2004). Azoxystrobin in‐furrow application at the time of planting had no effect on Rhizoctonia crown rot development of sugar beet (Stump et al, 2004).…”