Articles de revues : « Rhizoctonia solani kuhn »

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NAZAROV, V. N., I. I. BUSKO, I. V. LEVANTSEVICH, L. A. MANTSEVICH et M. M. TIMOHOVA. « POTATOES SELECTION MATERIAL ASSESSMENT BY SPROUTS AND TUBERS FOR RESISTANCE TO RHIZOCTONIA SOLANI KUHN ». Potato Growing 28 (28 décembre 2020) : 91–96. http://dx.doi.org/10.47612/0134-9740-2020-28-91-96.

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The two-year data on resistance of competitive variety trials of potatoes hybrids to Rhizoctonia solani Kuhn. are presented in the article. The estimation of potatoes breeding material for sprouts and tubers for resistance to Rhizoctonia solani Kuhn. is given and some hybrids are recommended for breeding process.

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NAZAROV, V. N., I. I. BUSKO, I. V. LEVANTSEVICH, L. A. MANTSEVICH et M. M. TIMOHOVA. « POTATOES BREEDING MATERIAL ASSESSMENT FOR RESISTANCE TO RHIZOCTONIA SOLANI KUHN. » Potato Growing 29 (22 décembre 2021) : 93–97. http://dx.doi.org/10.47612/0134-9740-2021-29-93-97.

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The two-year data on resistance of competitive variety trials of potatoes hybrids to Rhizoctonia solani Kuhn. are presented in the article. The evaluation of potatoes breeding material for sprouts and tubers for resistance to Rhizoctonia solani Kuhn. is given and some hybrids have been recommended for selective breeding.

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Fan, Wen Zhong. « Identification and Biological Characteristics of Strawberry Root Rot Pathogen ». Applied Mechanics and Materials 312 (février 2013) : 857–61. http://dx.doi.org/10.4028/www.scientific.net/amm.312.857.

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By research on strawberry root rot germ in several bases of Jilin province, cleared that the pathogen of strawberry root rot mainly were F. oxysporum and Rhizoctonia solani Kuhn, the growth of F. oxysporum was the best when took sucrose as C source, and the growth of Rhizoctonia solani Kuhn was the best when took starch as C source. KNO3 was the most appropriate N source to their growth. The effect of light on F. oxysporum was not great, but on Rhizoctonia solani Kuhn was great, the growth of mycelium was the fastest under alternating light and dark conditions, and had inhibition under full light conditions. Acidic conditions were suitable for mycelium growth of F. oxysporum, and the growth speed of both pathogens was the highest when PH was 6.

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Welvaert, W. « CONTROL OF RHIZOCTONIA SOLANI KUHN USING INDUCED ANTAGONISM ». Acta Horticulturae, n^o 176 (mai 1986) : 209–14. http://dx.doi.org/10.17660/actahortic.1986.176.24.

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Jiang, Shengfei, Guoyu Yang, Lijun Shi, Liangxin Fan, Zhenliang Pan, Caixia Wang, Xiaodan Chang et al. « Design, Catalyst-Free Synthesis of New Novel α-Trifluoromethylated Tertiary Alcohols Bearing Coumarins as Potential Antifungal Agents ». Molecules 28, n^o 1 (28 décembre 2022) : 260. http://dx.doi.org/10.3390/molecules28010260.

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A new method for the synthesis of α-trifluoromethylated tertiary alcohols bearing coumarins is described. The reaction of 3-(trifluoroacetyl)coumarin and pyrrole provided the target compounds with high yields under catalyst-free, mild conditions. The crystal structure of compound 3fa was investigated by X-ray diffraction analysis. The biological activities, such as in vitro antifungal activity of the α-trifluoromethylated tertiary alcohols against Fusarium graminearum, Fusarium oxysporum, Fusarium moniliforme, Rhizoctonia solani Kuhn, and Phytophthora parasitica var nicotianae, were investigated. The bioassay results indicated that compounds 3ad, 3gd, and 3hd showed broad-spectrum antifungal activity in vitro. Compound 3cd exhibited excellent fungicidal activity against Rhizoctonia solani Kuhn, with an EC50 value of 10.9 μg/mL, which was comparable to that of commercial fungicidal triadimefon (EC50 = 6.1 μg/mL). Furthermore, molecular docking study suggested that 3cd had high binding affinities with 1W9U, like argifin.

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Freddo, Álvaro Rodrigo, Sérgio Miguel Mazaro, Eleandro José Brun et Américo Wagner Júnior. « A quitosana como fungistático no crescimento micelial de Rhizoctonia solani Kuhn ». Ciência Rural 44, n^o 1 (janvier 2014) : 1–4. http://dx.doi.org/10.1590/s0103-84782014000100001.

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Rhizoctonia solani é um fungo causador de tombamento de plântulas em várias espécies vegetais. A quitosana é um polímero derivado do processo de desacetilação da quitina, a qual é encontrada em grande quantidade na carapaça de crustáceos, insetos e parede celular de fungos. A quitosana tem sido testada para diversos usos, inclusive no controle de fitopatógenos em agricultura, já que apresenta atividade antimicrobiana, para controle de patógenos. O presente trabalho teve como objetivo avaliar o efeito fungistático de diferentes concentrações de quitosana (0; 0,25; 0,5; 1 e 2%) no crescimento micelial do fungo R. solani in vitro. Os resultados obtidos demonstraram efeito significativo de quitosana nas diferentes concentrações utilizadas, na redução do crescimento micelial de R. solani. Observou-se também aumento do efeito fungistático da quitosana conforme o aumento da dose.

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Grichar, W. J., B. A. Besler et A. J. Jaks. « Use of Azoxystrobin for Disease Control in Texas Peanut ». Peanut Science 27, n^o 2 (1 juillet 2000) : 83–87. http://dx.doi.org/10.3146/i0095-3679-27-2-9.

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Abstract Field studies were conducted at 11 locations across south Texas from 1994 to 1997 to determine the activity of azoxystrobin against southern stem rot (Sclerotium rolfsii Sacc.), Rhizoctonia pod rot (Rhizoctonia solani Kuhn), early leaf spot (Cercospora arachidicola Hori) and late leaf spot [Cercosporidium personatum (Berk. & Curt.) Deighton]. Azoxystrobin at 0.22 to 0.45 kg/ha applied twice provided control of stem rot, Rhizoctonia pod rot, and leaf spot comparable to tebuconazole at 0.2 kg/ha applied four times. Peanut yield increases were evident with all fungicide treatments over the untreated check.

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T., Tharana Poonacha, Farooqkhan ., Yashoda R. Hegde, Nithya S. R. et Ismayil M. M. S. « Efficacy of fungicides against Rhizoctonia solani (J. G. Kuhn) causing root rot of french bean ». Environment and Ecology 41, n^o 3B (août 2023) : 1838–43. http://dx.doi.org/10.60151/envec/mrvm2315.

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The present in vitro study was carried out at the Department of Plant Pathology, University of Agricultural Sciences, Dharwad, Karnataka, India to evaluate the efficacy of various fungicides against Rhizoctonia solani (J. G. Kuhn) causing root rot of french bean using poisoned food technique. Among the contact fungicides tested, captan (70.37 %) and chlorothalonil (69.63 %) recorded maximum percent inhibition of mycelial growth and significantly superior over all other treatments. Carbendazim, difenoconazole, hexaconazole, propiconazole and tebuconazole (systemic fungicides) recorded cent per cent inhibition of mycelial growth of Rhizoctonia solani. Cent percent mycelial inhibition was recorded in all the combi product fungicides viz., (carbendazim + mancozeb), (trifloxystrobin + tebuconazole), (tricyclazole + mancozeb), (captan 70 % + hexaconazole 5 %) and (carboxin + thiram) at all the concentrations.

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., Tarek A. A. Moussa. « Studies on Biological Control of Sugarbeet Pathogen Rhizoctonia solani Kuhn ». Journal of Biological Sciences 2, n^o 12 (15 novembre 2002) : 800–804. http://dx.doi.org/10.3923/jbs.2002.800.804.

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KUMAR, N. KIRAN, M. K. Prasanna, L. Vijay Kumar et Pooja S. Patel. « Sustainable management of sheath blight in rice (Rhizoctonia solani Kuhn) ». JOURNAL OF ECO-FRIENDLY AGRICULTURE 18, n^o 2 (2023) : 382–88. http://dx.doi.org/10.48165/jefa.2023.18.02.30.

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A study was done to explore the various strategies to manage sheath blight of rice. During kharif 2018 and 2019, different treatments viz., foliar and soil application of Trichoderma viride, Pseudomonas fluorescens, mustard and radish leaf and their combination were applied at 30 and 60 days after transplanting (DAT), parameters such as disease severity, grain chaffiness, plant height and yield were evaluated at 45 and 75 DAT. Foliar application of propiconazole 25% EC @ 0.1% was most effective (50%-75.01%) followed by soil application of mustard leaf @ 5 kg/plot before transplanting and foliar application of P. fluorescens @ 5 g/L whereas foliar application of T. viride @ 5 g/L (9.64% and 46. 64%) was least effective. The foliar application of propiconazole 25% EC @ 0.1% recorded lowest percent of chaffiness (11-15%), highest yield of 4941.7-4991.7 kg/ha, whereas foliar application of T. viride @ 5 g/L showed highest percent of chaffiness (28.67-36.67%) with 3516.7-3475 kg/ha.

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Kumar, N. Kiran, M. K. Prasanna Kumar, L. Vijay Kumar et Pooja S. Patel. « Sustainable management of sheath blight in rice (Rhizoctonia solani Kuhn) ». Journal of Eco-friendly Agriculture 18, n^o 2 (2023) : 382–88. http://dx.doi.org/10.5958/2582-2683.2023.00069.2.

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Smitha H. S., Prashantha A., Sumangala Koulagi, Dileepkumar Masuthi et Vijaykumar Dondiba Rathod. « Morphological, Molecular Identification and Pathogenicity of Rhizoctonia solani Kuhn : A Seed and Soil Borne Pathogen Infecting French Bean ». International Journal of Environment and Climate Change 13, n^o 12 (18 décembre 2023) : 309–16. http://dx.doi.org/10.9734/ijecc/2023/v13i123686.

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French bean (Phaseolus vulgaris L.), holds significant importance as a both vegetable and pulse crop in India. Root rot disease has become threat for successful french bean cultivation. Fusarium spp., Sclerotium rolfsii, Rhizoctonia sp., Macrophomina, Pythium spp. and Thielaviopsis sp. may incite root rot disease in french bean. The root rot caused by Rhizoctonia soalni Kuhn is one among the root rot causing pathogens, is a major devasticating disease in this crop. The objective of this investigation was to perform the morphological, molecular identification and pathogenicity of R. solani Kuhn infecting french bean root rot. The pathogen was isolated from the naturally infected french bean field with characteristic symptoms like yellowing, drying at the soil level, stunting, poor seedling establishment, uneven growth, chlorosis, and premature defoliation in severely affected cases. It was isolated using standard tissue isolation technique and identified based on morphological traits. The fungus was molecular identified by sequencing ITS region of rDNA by using ITS1 and ITS4 primers. Further, pathogenicity of R. solani was proved according to Koch’s postulates.

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Cutulle, Matthew, Jeffrey Derr, David McCall, Adam Nichols, Brandon Horvath et Tatiana Sanchez. « Evaluation of Chitinase Activity in Tall Fescue Cultivars Inoculated with Rhizoctonia solani ». Journal of Environmental Horticulture 33, n^o 4 (1 décembre 2015) : 143–47. http://dx.doi.org/10.24266/0738-2898-33.4.143.

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Tall fescue has great utility as a low maintenance turfgrass in the northern and transition zone regions of the United States. A factor limiting tall fescue utility is its susceptibility to the pathogen Rhizoctonia solani Kuhn, the causal agent of foliar brown patch. Chitinase activity has been positively correlated with resistance to R. solani in other plant species. A chitinase assay was developed for tall fescue. Three tall fescue cultivars with differing agronomic qualities and brown patch susceptibility as well as a resistant hybrid bluegrass cultivar were inoculated with R. solani in a greenhouse humidity chamber. Chitinase activity 48 hours after inoculation was negatively correlated with percent brown patch severity 10 days after inoculation. ‘Jaguar’ tall fescue was the most tolerant to R. solani and exhibited the highest chitinase activity before and after inoculation. No significant increase in chitinase activity was observed in the other tall fescue cultivars following R. solani inoculation. Identifying tall fescue cultivars expressing high amounts of chitinase activity could be important for developing brown patch-tolerant tall fescue cultivars.

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Nagaraj, B. T., Gururaj Sunkad, D. Pramesh, M. K. Naik et M. B. Patil. « Host Range Studies of Rice Sheath Blight Fungus Rhizoctonia solani (Kuhn) ». International Journal of Current Microbiology and Applied Sciences 6, n^o 11 (10 novembre 2017) : 3856–64. http://dx.doi.org/10.20546/ijcmas.2017.611.452.

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SURESH MADUGULA et PARIMAL K. SINHA. « EXPRESSION OF CHITINASE AND -1,3-GLUCANASES IN RICE CULTIVARS IN REACTION TO Rhizoctonia solani,THE CAUSAL AGENT OF RICE SHEATH BLIGHT ». Journal of Research ANGRAU 51, n^o 3 (5 octobre 2023) : 1–13. http://dx.doi.org/10.58537/jorangrau.2023.51.3.01.

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Fifteen high yielding rice cultivars were screened for their reaction to sheath blight under field as well as semi-controlled conditions inoculated with the pathogen Rhizoctonia solani Kuhn. Expression of two pathogenesis related proteins (PRPs), Chitinase and -1,3-glucanases activities were estimated. Both chitinase and 1,3-glucanase PR proteins activity in terms of specific activity expressed after 72 h of pathogen inoculation was generally higher in tolerant cultivars (NLR 145, MTU 1061, NLR 3238, MTU 1153) including checks (TETEP and MTU 1001) as compared to control (MTU 7029) and other susceptible cultivars. The presence of a 33 kDachitinase and 32 kDa and -1,3-glucanase proteins was revealed by western blot analysis, across all the rice cultivars following Rhizoctonia solani infection. No significant grain yield difference in relation to the expression of PRPs was observed across the test rice cultivars.

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Muhyi, Rejah, et Paul W. Bosland. « Evaluation of Capsicum Germplasm for Sources of Resistance to Rhizoctonia solani ». HortScience 30, n^o 2 (avril 1995) : 341–42. http://dx.doi.org/10.21273/hortsci.30.2.341.

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A reliable screening method to detect Rhizoctonia solani Kuhn resistance in chiles (Capsicum annuum L.) was developed using infested corn (Zea mays Bonaf.) kernels as inoculum. The most aggressive New Mexican isolate of R. solani (PWB-25) was used to screen 74 Capsicum accessions for resistance to root rot caused by the fungus. The accessions differed in resistance, with disease ratings ranging from 2.9 to 8.6 on a 0 (no disease) to 9 (seedling dead) scale. The percentage of resistant plants, those in the interaction phenotype index class 0, 1, 2, and 3, ranged from 2.4% to 77.1%. Nineteen accessions representing four species had ≥50% resistant individuals and would be useful in breeding programs.

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Cassiolato, A. M. Rodrigues, et I. S. de Melo. « Reação de resistência de genótipos de tomateiro (Lycopersicum spp.) à infecção por Rhizoctonia solani Kuhn ». Scientia Agricola 51, n^o 3 (décembre 1994) : 446–52. http://dx.doi.org/10.1590/s0103-90161994000300011.

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Dada a importância da tomaticultura no Brasil e das enfermidades que atacam esta cultura, da mesma forma que visando futuros estados em programas de melhoramento vegetal para resistência à patógenos, este trabalho teve por objetivos: avaliar o grau de patogenicidade de quatro isolados de Rhizoctonia solani obtidos de plantas doentes de tomateiro (RT), berinjelas (RB1 e RB2) e pimentão (RP), em viveiros, frente a 9 genótipos de tomateiros e avaliar a reação de resistência de 73 genótipos de tomateiros ao R. solani. Nos experimentos utilizou-se solo esterilizado, em condições de casa de vegetação. Para o experimento I, os isolados de R. solani, oriundos das plantas de tomateiro (RT) e berinjela (RB,) foram igualmente mais patogênicos que os isolados de berinjela (RB,) e pimentão (RP), com relação aos 9 genótipos de tomateiro testados. Pode-se dizer que os isolados variaram em graus de agressividade. Quanto às reações de resistência a R. solani, observou-se que os diferentes genótipos não diferiram estatisticamente entre si. Com relação ao experimento II, entre os 73 genótipos de tomateiro (incluindo espécies selvagens, variedades nacionais e introduções), pode-se observar que houve grande variabilidade quanto a reação de resistência a R. solani (isolado do tomateiro - RT), com percentuais de sobrevivência de plantas variando de 91%, para a cultivar Quinck Pick, até 0% de sobrevivência para o genótipo LA-462. Não foi verificada imunidade em nenhum material avaliado e sim níveis de resistência, onde esta, expressa em percentagem de sobrevivência, ocorreu de uma maneira contínua, desde uma reação de suscetibilidade até altos níveis de resistência.

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Bliznyuk, Ulyana, Natalia Chulikova, Victoria Ipatova et Anna Malyuga. « Effect of ionizing radiation with 1 MeV on phenology of potatoes inhabited by fungi Rhizoctonia solani Kuhn ». E3S Web of Conferences 285 (2021) : 02001. http://dx.doi.org/10.1051/e3sconf/202128502001.

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The study perpersents the influence of electron irradiation on on the phenology and productivity of potatoes inhabited by the fungus Rhizoctonia solani Kuhn. Potato samples were irradiated with the doses ranging from 0.02 kGy to 3.0 kGy. It was found that the pre-planting irradiation of seed potato tubers with the doses of 0.02-0.15 kGy led to a delay in plant development, and irradiation of tubers with over 0.2 kGy resulted in the death of plants. The maximum number of large tubers was obtained from samples irradiated with the dose of 0.15 kGy. The yield of potato tuber samples irradiated with the dose of 0.02 kGy corresponded to that of the control samples. Irradiation of potato seed tubers with a dose of 0.04 kGy led to a significant decrease in the colonization of the surface of tubers of the new crop with Rhizoctonia solani, while irradiation of potato tubers with a dose of 0.15 kGy completely eliminated the pathogen.

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Maslennikova, Vladislava, Vera Tsvetkova, Andrey Petrov, Rinat Galeev, Maxim Shulga, Natalia Gavrilets, Sergey Ryumkin et al. « Influence of the Multifunctional Biological Product Phytop 26.82 on the Growth and Development of Seed Potatoes ». International Journal of Agronomy 2021 (1 avril 2021) : 1–9. http://dx.doi.org/10.1155/2021/8879626.

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The study aimed to test a multifunctional technology for potatoes’ biological protection using Phytop 26.82 against black scurf (Rhizoctonia solani Kuhn) and Colorado potato beetle in Western Siberia. The experiment was conducted with the medium-maturing variety “Kemerovchanin.” The product tested was Phytop 26.82. The research methodology was carried out both in laboratory conditions and in the field. In the laboratory, the biological product was used on potato leaves and Colorado potato beetle larvae. The authors revealed the degree of influence of the natural effect Phytop 26.82 on the Colorado potato beetle’s larvae of different ages. The larvae were counted on the 5th, 7th, and 10th days of the experiment. In the field, the authors also revealed the level of the immunogenic effect of the bioagent Phytop 26.82 on the Rhizoctonia stem canker (Rhizoctonia solani Kuhn). The morphological parameters of the Kemerovchanin potato variety were observed during the course of this study. The results of the study showed that the microbial mixture Phytop 26.82 made it possible to increase the biomass of plants by 1.5–1.8 times due to an increase in the length of the aerial part (by 10%), the number of stems (1.2–1.7 times), and the number of stolons (1.5–1.6 times) compared to control. Under the bioagent, Phytop 26.82, Rhizoctonia stem canker on the stems decreased by 45% overall counting weeks. The effectiveness of the bioagent Phytop 26.82 reached 100% in two aspects. One of them was the effectiveness of a biological product in the Colorado potato beetle’s obliteration (Leptinotarsa decemlineata). The second direction of significance was the fight against the black scurf. The use of a mixture of bioagents of the Phytop 26.82 preparation can simultaneously have an insecticidal, fungicidal, and growth-stimulating effect on potatoes.

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Polozhenets, V., L. Nemerytska et I. Zhuravska. « Evaluation of potato varieties and hybrids on the resistance against black scab under conditions of Ukraine’s Polissia ». Karantin i zahist roslin, n^o 4 (10 décembre 2021) : 15–18. http://dx.doi.org/10.36495/2312-0614.2021.4.15-18.

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Goal. Assess potato varieties and hybrids for resistance against rhizoctonia disease and identify highly resistant varieties. Methods. The fundamental principle of the existing methodology for evaluating varieties is to test varieties, hybrids and species of potatoes on natural or artificial infectious backgrounds using a pure culture of the fungus Rhizoctonia solani Kuhn. The culture grown in Petri dishes was introduced when the tubers were planted in the soil. The assessment of the degree of damage to tubers and stems was carried out according to the damage to the underground organs of plants, the yield of potatoes, and then the level of variety samples was determined by resistance to the disease. Evaluation of potato varieties and hybrids for resistance against the causative agent of the disease Rhizoctonia solani Kuhn was carried out on a nine-point scale, where score 9 — no damage to stems and tubers, 7 — disease development up to 10% (high resistance); 5 — disease progression 11—25% (medium resistance); score 3 — disease progression 26—50% (low resistance). Results. Based on the test of potato varieties and hybrids for resistance against rhizoctonia, Dubravka, Vesta, Lugovska, Obriy, Serpanok, Yavir, Scarbnytsia, Tyras and hybrids P.207.407 (Zov × Polisska Rozheva), 205.17-24 (Adretta × 23-16s/73) and others; to medium-resistant (5 points) — Chervona Ruta, Povin, Vodogray, Horlytsia, Zov, Cupava, Nadiyna, Belarossa, Olvia, Svitanok Kyivskyi, Ukrainska Rozheva, Beregynia, Charunka, Okolytsia, Slutch, hybrids P.210.14-23 (Adretta × Posvit), 211.20-31 (Prolisok × Lugovska); to susceptible — 51, or 32.9% of the tested varieties. Conclusions. We have proved that mid-early ripening and early ripening cultivars as well as selection hybrids are more infected with black scab than mid-ripening, mid-late ripening and late ripening cultivars. These relatively resistant potato cultivars and hybrids are expedient to use in the selection on the resistance against black scab.

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Behera, Lopamudra, Ram Chandra, Srikanta Lenka, Arabinda Mahanty, Sumit Kumar et Prakash Chandra Rath. « Bacterial synthesized silver nanoparticle inhibits Rhizoctonia solani Kuhn, the causal organism for sheath blight disease of rice ». Oryza-An International Journal on Rice 60, n^o 1 (30 mars 2023) : 166–74. http://dx.doi.org/10.35709/ory.2023.60.1.8.

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Rhizoctonia solani Kuhn (AG 1-IA) is one of the most devastating pathogens of rice causing sheath blight disease and being a prime reason for the unsatisfactory productivity of rice in India. The goal of the present study was to investigate the efficacy of silver nanoparticles (AgNPs) synthesized using an agriculturally important bacterium, Pseudomonas fluorescens OKC, in managing the sheath blight disease of rice. Successful biosynthesis of AgNPs was monitored by UV-visible spectroscopy, showing a peak at 432 nm. The AgNPs were further characterized using a Transmission Electron Microscope (TEM), Dynamic Light Scattering (DLS) and Fourier Transform Infrared spectroscopy (FT-IR). The TEM result confirmed that the size of the synthesized nanoparticles was less than 100nm. DLS results revealed that the average particle size of the AgNPs was 74 nm and the zeta potential was -23.6 mV, indicating that the synthesized nanoparticles were of good stability at room temperature. The antifungal potential of AgNPs was tested against the test fungus in vitro and maximum growth inhibition was recorded in AgNPs treatment (69.09%) as compared to the control. Moreover, this result was further authenticated under net house conditions, where AgNPs successfully reduced the incidence of R.solani Kuhn. The findings showed that the biosynthesized AgNPs inhibited the growth of R. solani Kuhn and could be useful in the management of sheath blight disease in rice.

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Al-Baldawy, Muneer Saeed M., Ahed A. A. H. Matloob et Mohammed K. N. Almammory. « Effect of Plant Extracts and Biological control agents on Rhizoctonia solani Kuhn ». IOP Conference Series : Earth and Environmental Science 735, n^o 1 (1 avril 2021) : 012079. http://dx.doi.org/10.1088/1755-1315/735/1/012079.

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Singh, Prashant Kumar, Jagdish Kumar Patidar, Reeti Singh et S. Roy. « Screening of Potato Varieties against Black Scurf Caused by Rhizoctonia solani Kuhn ». International Journal of Current Microbiology and Applied Sciences 10, n^o 01 (10 janvier 2021) : 1444–49. http://dx.doi.org/10.20546/ijcmas.2021.1001.171.

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Ravali, Somshetty, Bimla Rai et Prem Kumar Jha. « Isolation and Evaluation of Native Soil Bio-agents against Rhizoctonia solani Kuhn ». International Journal of Current Microbiology and Applied Sciences 10, n^o 01 (10 janvier 2021) : 2695–703. http://dx.doi.org/10.20546/ijcmas.2021.1001.313.

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Shah, M. J., A. N. Buldeo et M. S. Bandgar. « Bio-control of Root Rot of Brinjal Caused by Rhizoctonia solani Kuhn ». International Journal of Current Microbiology and Applied Sciences 7, n^o 03 (10 mars 2018) : 2469–74. http://dx.doi.org/10.20546/ijcmas.2018.703.287.

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Montero-Tavera, Víctor, Brenda Zulema Guerrero-Aguilar, José Luis Anaya-López, Talina Olivia Martínez-Martínez, Guevara Olvera Lorenzo et Mario Martín González-Chavira. « Diversidad genética de aislados de Rhizoctonia solani (Kuhn) de chile en México ». Revista Mexicana de Ciencias Agrícolas 4, n^o 7 (25 avril 2018) : 1043–54. http://dx.doi.org/10.29312/remexca.v4i7.1144.

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Una de las principales limitantes para la producción de chile son los hongos patógenos causantes de la enfermedad conocida como “marchitez del chile” o “secadera”. Esta enfermedad puede ser devastadora cuando las condiciones climáticas son favorables para el patógeno. A pesar de que se han intentado diferentes medios de control (químicos y culturales) ninguno ha tenido éxito. Una alternativa para su control es producir germoplasma resistente, sin embargo para poder establecer un programa de mejoramiento efectivo es necesario conocer la distribución y diversidad genética de los patógenos involucrados, particularmente de Rhizoctonia solani, que por su ubicuidad representa un peligro potencial en todas las zonas productoras. Por ello el objetivo fue caracterizar a R. solani en las zona Centro Norte de México y determinar su diversidad genética. Para cumplir con este objetivo se consideraron los estados de Chihuahua, Durango, Zacatecas, San Luis Potosí, Colima, Querétaro y Guanajuato donde en 2009 se colectaron plantas adultas de Chile con síntomas de marchitez, se aisló al hongo y se encontró una incidencia del 33%, encontrándose tanto en tallo como en raíz. Las células miceliales fueron multinucleadas, características de las cepas patogénicas. Las pruebas de anastomosis demostaron la presencia en México de los grupos GA4, GA-2.1, GA-IIB, GA-2IV, GA7, GA11, GA12 y GA13. La diversidad genética de este hongo fue muy alta, de tal manera que las relaciones demostradas por la construcción de dendrogramas no muestran tendencias homogéneas pues los principales grupos formados contienen elementos de todos los estados.

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Amer, Mostafa, Saad Shama, Ahmed Heflish et Mohamed Bresam. « Biological Control of Tomato Damping-off Disease Caused by Rhizoctonia solani Kuhn ». Journal of the Advances in Agricultural Researches 24, n^o 2 (1 juillet 2019) : 226–37. http://dx.doi.org/10.21608/jalexu.2019.163365.

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Meena, Ramji Lal, Shankar Lal Godara, Ashok Kumar Meena et Prabhu Narayan Meena. « Evaluation of Efficacy of Different Bioagents and Fungicides against Rhizoctonia solani (Kuhn) ». International Journal of Current Microbiology and Applied Sciences 7, n^o 09 (10 septembre 2018) : 3694–703. http://dx.doi.org/10.20546/ijcmas.2018.709.459.

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Banville, G. J. « Yield losses and damage to potato plants caused by Rhizoctonia solani Kuhn ». American Potato Journal 66, n^o 12 (décembre 1989) : 821–34. http://dx.doi.org/10.1007/bf02853963.

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Ogoshi, A. « Ecology and Pathogenicity of Anastomosis and Intraspecific Groups of Rhizoctonia Solani Kuhn ». Annual Review of Phytopathology 25, n^o 1 (septembre 1987) : 125–43. http://dx.doi.org/10.1146/annurev.py.25.090187.001013.

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Suciatmih, Suaciatmih, Yuliar Yuliar et D. Supriyati. « ISOLASI, IDENTIFIKASI, DAN SKRINING JAMUR ENDOFIT PENGHASIL AGEN BIOKONTROL DARI TANAMAN DI LAHAN PERTANIAN DAN HUTAN PENUNJANG GUNUNG SALAK ». Jurnal Teknologi Lingkungan 12, n^o 2 (1 décembre 2016) : 171. http://dx.doi.org/10.29122/jtl.v12i2.1249.

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Isolation of endophytic fungi was done to find alternative microorganisms as biocontrol agents against Rhizoctonia solani Kuhn, a soil borne pathogen on many agriculturalcrops. The research objectives were 1) to isolate and identify endophytic fungi colonize plants growing on agricultural and Mount Salak supporting forest lands in the Villages of Parakan Salak and Cimalati, Sukabumi; and 2) to screen for their biocontrol agent activity againt R. solani. Diameter of R. solani was measured on day 2 after inoculation, and its percent inhibition of growth by endophytic fungi is calculated using the formula Skidmore & Dickinson (1976). The results indicated that 214 isolates of endophytic fungi were isolated from 96 plant species that growing in both places. Endophytic fungi isolated including in the group of Aspergillus, Cladosporium, Colletotrichum, Curvularia, Drechslera, Fusarium, Guignardia, Mucor, Nigrospora, Paecilomyces, Penicillium, Pestalotiopsis, Phoma, Phomopsis, Rhizoctonia, and endophytic fungi that have not been identified. Of the 214 fungal isolates tested, 39 isolates (18.22 %) could inhibit the growth of R. solani from 10.18 % to 58.99 % with a percent inhibition. The highest growth inhibition of R. solani were shown respectively by an unidentified fungus isolatedfrom Hyptis capitata Jack (58.99%), Cladosporium sp. isolated from jeruk bali (Citrus grandis (L.) Osbeck) (55.42%), Pestalotiopsis sp. isolated from pine apple (Ananas comosus (L.) Merr.) (53.85 %), and Paecilomyces lilacinus (Thom) Samson isolated from banyan (Ficus benyamina L.) (51.81%)

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Booy, Gerdien, Todd C. Wehner et Samuel F. Jenkins. « Resistance of Cucumber Lines to Rhizoctonia solani Damping-off : Not Related to Fruit Rot Resistance ». HortScience 22, n^o 1 (février 1987) : 105–8. http://dx.doi.org/10.21273/hortsci.22.1.105.

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Abstract Seedlings of 35 cucumber (Cucumis sativus L.) lines were evaluated for resistance to damping-off caused by Rhizoctonia solani Kuhn. Five variables were measured, with the corrected disease rating (a rating for disease severity including a correction for seed vigor) being the most useful. Differences in resistance occurred among the lines, with ratings varying from 1.5 to 5.9 on a 0 (no disease) to 9 (plant dead) scale. The ratings for damping-off resistance were compared with ratings collected previously for rhizoctonia fruit rot resistance. The correlations were low and nonsignificant (r = −0.19 to −0.10). Thus, the damping-off test would not be a good substitute for the fruit rot test.

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Kahn, Brian A., Kenneth E. Conway et Christine G. Fisher. « Effects of Wirestem, Wind Injury, and Iprodione on Yields of Six Broccoli Cultivars ». HortScience 21, n^o 5 (octobre 1986) : 1136–39. http://dx.doi.org/10.21273/hortsci.21.5.1136.

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Abstract Six cultivars of broccoli [Brassica oleracea L. (Italica Group)] were grown from transplants in Spring and Fall 1984 at Bixby, Okla. The objectives were to evaluate yield losses due to wirestem (caused by Rhizoctonia solani Kuhn) and/or wind injury, cultivar differences in susceptibility, and fungicide effectiveness. Fungicide treatments included an untreated control and application of iprodione at 1.14 kg·ha−1 as either a drench with the starter fertilizer solution or through sprinkler irrigation (chemigation). Iprodione seemed useful for control of R. solani, although the proportion of injured plants infected by R. solani was significantly reduced only in the fall. However, the fungicide treatments did not increase marketable yields significantly over the control. No significant differences in susceptibility to R. solani were shown among the cultivars. Most injured plants not infected by R. solani apparently sustained wind damage. ‘Excalibur’ was especially susceptible to wind-induced stem breakage. Chemical names used: 3-(3,5-dichlorophenyl)-N-(l-methylethyl)-2,4-dioxo-l-imidazolidinecarboxamide (iprodione).

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Sharma, K. K. « Induction of systemic resistance (ISR) against sheath blight of rice caused by Rhizoctonia solani Kuhn using biological seed treatment with Trichoderma ». Journal of Applied and Natural Science 9, n^o 3 (1 septembre 2017) : 1861–65. http://dx.doi.org/10.31018/jans.v9i3.1453.

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Sheath blight caused by Rhizoctonia solani Kuhn has recently noticed one of the most important diseases of rice on almost all the high yielding varieties in major rice growing area. In our study morphologically and molecu-larly characterized thirty rhizospheric isolates of Trichoderma (T. harzianum and T. virens) from different locations of Uttarakhand were evaluated for their mycoparasitic ability, disease (sheath blight) suppressing potential and inducing systemic resistance against Rhizoctonia solani. Maximum inhibition in hyphal growth (58.9 %) against R. solani was recorded with isolate PB 2 followed by PB 3 (53.4 %) in confrontation assay. Under glass house con-dition, minimum disease severity (13.6%) was recorded in the treatment where seeds were treated with PB 22 and this treatment also exhibited highest total phenol content (394 μl/g) 168 hours after pathogen inoculation. Total phenol content was also increased maximally (466 μl/g) before pathogen inoculation in the treatment where seeds were treated with PB 22. Moreover, high quality ISR activity was recorded with isolates PB 21, 3, 1, 4, 23, 2 and 16 as they reduced more than 34 percent disease and total phenol contents 456 μl/g, 449 μl/g, 442 μl/g, 440 μl/g and 440 μl/g, 438 μl/g and 431 μl/g were recorded for respective isolates indicated induction of resistance in paddy against sheath blight disease caused by R. solani.

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Branch, W. D., et T. B. Brenneman. « White Mold and Rhizoctonia Limb Rot Resistance among Advanced Georgia Peanut Breeding Lines1 ». Peanut Science 20, n^o 2 (1 juillet 1993) : 124–26. http://dx.doi.org/10.3146/i0095-3679-20-2-14.

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Abstract Sclerotium rolfsii Sacc. and Rhizoctonia solani Kuhn are soilborne pathogens causing two major diseases in peanut (Arachis hypogaea L.) production: white mold and limb rot, respectively. Chemical and cultural control has been relatively ineffective in the past, consequently disease resistance is actively being sought as an environmentally safer and cost efficient alternative. Seven advanced breeding lines were evaluated from the Georgia Peanut Breeding Program and compared to four commercial runner cultivars. Among the cultivars, Southern Runner was found to have the highest yield and resistance to white mold but not limb rot. GA T-2741 had the best overall yield and disease resistance to both white mold and Rhizoctonia limb rot of all cultivars and breeding lines.

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Sharma, Sonu, S. K. Tripathi, Smita Prajapati, Juhi Johare et Prince Mahore. « Effect of Fungicides on Mycelium Growth of Rhizoctonia solani of Rice under In-vitro ». Journal of Experimental Agriculture International 46, n^o 5 (1 avril 2024) : 469–73. http://dx.doi.org/10.9734/jeai/2024/v46i52398.

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Sheath blight of rice caused by Rhizoctonia solani Kuhn is emerging as very destructive disease causing heavy yield losses. This experiment was conducted at Department of plant Pathology, College of Agriculture, Rewa (M.P.) during 2018-19. This experiment was carried out in a complete randomized design (CRD) with eight treatments including untreated control. Seven fungicides viz., Flusilazole12.5%+carbendazim 25% SC, Azoxystrobin 18.2% w/w+difenoconazole 11.4 w/w SC, Azoxystrobin 11%+Tebuconazole 18.3% w/w SC, Tricyclazole 18%+ mancozeb 62%WP, Zineb 68% + hexaconazole 4% WP, Trifloxystrobin 25%+Tebuconazole 50%WG, Mancozeb 50%+carbendazim 25%WS, were evaluate against R. solani of rice at different concentrations under in-vitro by poisoned food technique. The present study, among the tested fungicides Azoxystrobin 11%+Tebuconazole 18.3% w/w SC at 200 ppm and 100 ppm was found significantly superior in inhibiting the mycelial growth of R. solani over untreated check at 96 hrs. after incubation.

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P, LAKSHMANAN, et CHANDRASEKARAN NAIR M. « COMPARATIVE STUDIES ON THE MORPHOLOGY AND PATHOGENICITY OF FOUR ISOLATES OF RHIZOCTONIA SOLANI ». Madras Agricultural Journal 72, july (1985) : 388–93. http://dx.doi.org/10.29321/maj.10.a02386.

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Rhizoctonia solani Kuhn isolated from rice compared well in its Morphology with other isolates of R. Solani from cowpea, Jack and Cotton. The pathological reactions of these four isolates varied and the one from rice was able to infect all the plants tested including Manihot esculenta and Allium cepa which are new records. On rice seedlings isolates from rice and cowpea produced almost similar symptoms. Isolate from Jack produced only a very mild symptom and isolate from cotton was not pathogenic to rice. The soil inoculation studies with four isolates showed that the isolates from rice, cowpea and Jack were Pathogenic to all plants tested. Isolate from cotton was not Pathogenic to Oryzae sativa, Sorghum vulgare and Vigna sinensis. Isolates from rice and cowpea produced more or less same Pathogenic reactions on various hosts tested.

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Hasmi, Safdar Kaiser, et R. U. Khan. « In-vitro bioefficacy of fungal antagonists against root rot of Pea caused by Rhizoctonia solani (Kuhn) ». International Journal of Agricultural Invention 3, n^o 02 (27 novembre 2018) : 166–70. http://dx.doi.org/10.46492/ijai/2018.3.2.13.

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In-vitro effectiveness of various antagonistic fungi namely Aspergillus niger, A. flavus, Trichoderma koningii, T. atroviride, and T. harzianum were evaluated against Rhizoctonia solani by dual culture technique on potato dextrose agar. According to the observation recorded after 5 days, all the treatments were found to be superior over control (R. solani), but among all treatments A. niger was found to the most effective antagonist, with highest radial growth inhibition of the pathogen (77.01 percent), followed by A. flavus, T. harzianum and T. koningii i.e., 66.23, 64.42 and 62.20 percent. While as, T. atroviride was found to be the least effective one with minimum growth inhibition i.e., 42.21 percent. Whereas, at the same time control (R. solani) showed 100 percent radial growth and covered the whole Petri Plate within 5 days. All the bio-control agents were significantly effective to inhibit the sclerotia formation and development, except T. atroviride in which formation of sclerotia was recorded, while in all other treatments complete inhibition of sclerotia formation was recorded after 10 days of incubation.

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Perkins, AJ, et PA Mcgee. « Distribution of the Orchid Mycorrhizal Fungus, Rhizoctonia solani, in Relation to Its Host, Pterostylis acuminata, in the Field ». Australian Journal of Botany 43, n^o 6 (1995) : 565. http://dx.doi.org/10.1071/bt9950565.

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The plant pathology model was tested as an explanation of the distribution of orchid mycorrhizal fungi in the field. The mycorrhizal fungus, Rhizoctonia solani Kuhn AG 6, was isolated from adult plants and protocorms of Pterostylis acuminata R.Br. at a study site and from adult plants at five other locations in the Sydney region. In litter and trap seedlings, R. solani AG 6 was found within 50 cm of adult plants of the orchid P. acuminata and was more abundant close to the host plant. In the laboratory, protocorms of P. acuminata became infected with R. solani AG 6, but not with fungi isolated from the other orchids, P. concinna R.Br., P. ophioglossa R.Br. and Caladenia catenata (Smith) Druce, found at the site. It was concluded that the co-distribution model better explains the distribution of fungus and host in this case.

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Muis, Amran, Nurasiah Djaenuddin et Nurnina Nonci. « EVALUASI LIMA JENIS INNER CARRIER DAN FORMULASI BACILLUS SUBTILIS UNTUK PENGENDALIAN HAWAR PELEPAH JAGUNG (RHIZOCTONIA SOLANI KUHN) ». JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA 15, n^o 2 (25 mars 2016) : 164. http://dx.doi.org/10.23960/j.hptt.215164-169.

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Evaluation of five inner carriers and Bacillus subtilis formulation to control banded leaf and sheath blight (Rhizoctonia solani Kuhn). One alternative control method against plant pathogens is the use of antagonistic microorganisms, such as Bacillus subtilis. The use of the antagonistic bacteria on corn especially in Indonesia is still lack. The objective of this research was to evaluate some inner carrier and to make formulated antagonistic B. subtilis to be used as biological control agents on corn diseases. This research consists of laboratory and greenhouse activities. The laboratory activities consist of B. subtilis biomass production, formulation of B. subtilis, and evaluation of five types of inner carrier. In the greenhouse, testing the formulation B. subtilis with talc as an inner carrier, which is compared with the treatment solution of B. subtilis, nordox, metalaxyl fungicides. The data collected in this study were percentage of germination, damping off due to pathogen R. solani, plant height, plant fresh weight, and percentages of R. solani incidence on 14 DAP. The results showed that talc powder and corn flour were the best inner carrier to be used in sorage formulation of antagonistic Bacillus. Formulated Bacillus subtilis TM4 showed no negative affect on seed germination and able to suppress the development of R. solani in greenhouse.

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Pedras, M. Soledade C., Yang Yu, Jun Liu et Yudelsy A. Tandron-Moya. « Metabolites Produced by the Phytopathogenic Fungus Rhizoctonia solani : Isolation, Chemical Structure Determination, Syntheses and Bioactivity ». Zeitschrift für Naturforschung C 60, n^o 9-10 (1 octobre 2005) : 717–22. http://dx.doi.org/10.1515/znc-2005-9-1010.

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Abstract The isolation, structure determination, syntheses and biological activity of Nb-acetyltryptamine and three proline containing dioxopiperazines, cyclo(S-Pro-S-Leu) (2), cyclo(S-Pro- S-Ile) (3), and cyclo(S-Pro-S-Val) (4), from cultures of Rhizoctonia solani Kuhn are reported here for the first time. Despite the small amounts isolated, the absolute stereochemistry of these naturally occurring dioxopiperazines was established by 1H NMR using for the first time the chiral solvating agent (R)-(D)-2,2,2-trifluoro-1-(9-anthryl)ethanol.

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Mendoza V, Rosalinda, J. J. Romo Cerda et F. D. Hernández C. « Efectividad de Bacillus subtilis 7 fungibac sobre Rhizoctonia solani Kuhn en papa bajo invernadero ». Revista Agraria 11, n^o 1-2 (20 décembre 1995) : 120–27. http://dx.doi.org/10.59741/agraria.v11i1-2.97.

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El cultivo de la papa (Solanum tuberosum 1.) es afectado por diversas enfermedades entre las que destaca la llamada "costra negra” causada por el hongo Rhizoctonia solani, la cual ataca desde la emergencia de plantulas hasta la producción de tubérculos. En muchas ocasiones, el control químico de la enfermedad es poco efectivo, haciéndose necesario buscar alternativas de solución como es el control biológico. En este trabajo se informa de la efectividad de tratamiento con bacterias viables y endosporas comerciales de Bacillus subtilis en el control de costra negra, comparado con el que proporcionan dosis de Fungibac, producto fungicida bactericida biodegradable. La experimentación se llevó a cabo bajo condiciones de invernadero, de junio a octubre de 1993, utilizando la variedad de papa alpha, 10 tratamientos, 4 repeticiones, en un diseño completamente al azar. El índice de mortalidad de plantas causado por Rhizoctonia solani fue evaluado a los 60, 90 y 110 días de la siembra. La comparación de medias the con la prueba DMS al 5%. Los tratamientos de mayor efectividad a los 60, 90 y 110 días fueron, en este orden, como sigue bacterias viables en dosis de 10' células mi1; endosporas comerciales en la cantidad de 0.15y, mientras que el de bacterias viables en 1014 células ml presentó el mejor control al final del ciclo de cultivo.

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Leiwakabessy, Ch, Yatni Yatni, C. Uruilal, R. E. Ririhena et F. J. Rumalatu. « KEMAMPUAN ANTAGONIS BAKTERI ENDOFIT ASAL TANAMAN SAGU (Metroxylon spp) DALAM MENEKAN PERTUMBUHAN Rhizoctonia solani Kuhn. SECARA IN VITRO ». Agrinimal Jurnal Ilmu Ternak dan Tanaman 7, n^o 2 (31 octobre 2019) : 48–52. http://dx.doi.org/10.30598/ajitt.2019.7.2.48-52.

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Endophytic bacteria is microbe lives in plant tissues without causing symptoms of disease. The benefit of utilizing endophytic bacteria as a technique for controlling diseases such as sprout (R. solani) has been known due to its ability to live and to colonize plant internal tissues. This study aims to determine the ability of endophytic bacteria from sago to suppress the growth of R. solani in vitro. This research was conducted using 19 isolates of endophytic bacteria from sago with 5 replications. The results showed that two endophytic isolates namely STA2 and STA13 were able to suppress the growth of R. solani pathogens compared to controls with inhibition percentage of 41.86% and 16.27%, respectively.

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Chaudhary, Sandeep, Akhilesh Gupta, CO Samuel et PP Upadhyaya. « Study of Various Fungitoxic Properties of Aqueous Extract of Hedychium spicatum against Rhizoctonia solani Kuhn. » Journal of Pure and Applied Microbiology 12, n^o 1 (30 mars 2018) : 301–7. http://dx.doi.org/10.22207/jpam.12.1.36.

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Bhaskar, Rinku, Subhash Chandra, Ramesh Chand, Sarvesh Kumar, Jashanpreet Singh et V. P. Chaudhary. « Screening of Mungbean [Vigna radiata (L.) Wilczek] Genotypes against Web Blight Caused by (Rhizoctonia solani Kühn) for Disease Resistance ». International Journal of Environment and Climate Change 13, n^o 11 (11 octobre 2023) : 583–87. http://dx.doi.org/10.9734/ijecc/2023/v13i113203.

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Mungbean [Vigna radiata (L.) Wilczek] is the important source of proteins, minerals, and vitamins of the predominantly vegetarian Indian diet. Web blight caused by Rhizoctonia solani (Kuhn) is one of the most important fungal diseases which appear every year in varying intensity and causes heavy reduction in yield. The present investigations were carried out at the Student’s Instructional Farm (S.I.F.) A.N.D.U.A. &T., Kumarganj, Ayodhya to test the resistance of 100 genotypes against Rhizoctonia solani Kühn under natural conditions (In vivo).Genotypes were placed in different grades according to the rating scale which is based on disease severity. Out of total test entries nine genotypes viz., DGGV-2, OUM11-5, RMG1030, IPM9901-8, DGG1, SML10-82, MH2-15, LGG450 and CGG945 were found free from infection, twelve genotypes viz., RMG-975, CGG-973, AKM -8802, IPM -02-3, MH-4, Pusa -0672, AKM-4, CO-5 Check, Bbara S. check, Asha, BPMR 145 and IPM 02-14 were recorded highly resistant, twenty four genotypes were noticed susceptible and only nine genotypes were found highly susceptible.

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Green, D. E., J. D. Fry, J. C. Pair et N. A. Tisserat. « Influence of Management Practices on Rhizoctonia Large Patch Disease in Zoysiagrass ». HortScience 29, n^o 3 (mars 1994) : 186–88. http://dx.doi.org/10.21273/hortsci.29.3.186.

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Mowing heights from 1.2 to 5.1 cm, five N sources with two application rates (74 and 148 kg N/ha per year), and seven preemergence herbicides were evaluated in field studies in Manhattan and Wichita, Kan., for their effect on large patch disease, caused by Rhizoctonia solani Kuhn AG 2-2, in zoysiagrass (Zoysia spp.). Turf mowed at 1.2 and 2.5 cm was more severely blighted than turf mowed at 4.5 or 5.1 cm. At all mowing heights, turf recovered by August or September. Disease severity was not influenced by N source, N rate, or preemergence herbicides.

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Sharma, Sonu, S. K. Tripathi, Vijay Kumar Kashyap, Bharti Rajput et Bahrat Kumar. « Cultural Characteristics of Rhizoctonia solani Causing Sheath Blight of Rice ». International Journal of Environment and Climate Change 13, n^o 11 (10 novembre 2023) : 2622–27. http://dx.doi.org/10.9734/ijecc/2023/v13i113430.

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Sheath blight of rice caused by Rhizoctonia solani Kuhn is emerging as a very destructive disease causing heavy yield losses. The present study was conducted at Department of Plant pathology, JNKVV, College of Agriculture, Rewa, (M.P.) with eight culture media viz., Potato Dextrose Agar (PDA), Czapek’s Dox Agar (CDA),Richards medium (RMA), Corn Meal Agar (CMA), Oat meal agar (OMA), Rice leaf extract agar (30%),Rice seed extract agar (10%) and Rice seed extract (10%)+ (2%) sucrose were evaluated against R. solani. It can be concluded that Potato dextrose agar (88.0 mm) and Czapek’s dox agar (87.7 mm) medium supported maximum mycelial growth of R. solani isolated from rice. Whereas, least mycelial growth (75.8 mm) was observed in Rice seed extract agar and Richards agar medium. Mycelial growth was excellent fast, abundant and off white on Potato dextrose agar. Whereas it was fast, abundant and on Czapek’s dox agar. Sclerotia of the fungus initiated within 3 - 4 days in different culture media. Maximum number of sclerotia was produced in Oat meal agar (54.0) closely followed by Potato dextrose agar (51.2) and Czapek’s dox agar (44.6). Maximum weight of 10 sclerotia was recorded in potato dextrose agar (1030.6 mg) followed by Czapek’s dox agar (920.3 mg) and Oat meal agar (884.7 mg). Maximum size of sclerotia were formed in Potato dextrose agar followed by Rice seed extract agar and Corn meal agar.

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P. Renganathan, Soundarya, et A. Eswaran. « In- vitro Efficacy of PGPR on the Management of Rhizoctonia solani (KUHN) Causing Sheath Blight of Rice ». International Journal of Current Microbiology and Applied Sciences 10, n^o 9 (10 septembre 2021) : 411–18. http://dx.doi.org/10.20546/ijcmas.2021.1009.048.

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Besides, the inherent hazards, negative public perceptions about the adverse environmental pollution of chemical pesticides, an alternative control methods are needed. Bio-stimulants are eco-friendly alternative to chemical pesticides because of their minimal impact on human health and environment, while ensuring optimal increase of crop yield, quality and tolerance to biotic stress. The soil has an enormous untapped potential of microbes, showing antagonistic effects against soil borne plant pathogenic organisms. This work validates a procedure to select one of the best Plant Growth Promoting Rhizobacteria (PGPR) as potential active ingredients for controlling Sheath blight of rice, incited by Rhioctonia solani (Kuhn). It is one of the most important Necrotrophic fungal diseases of rice with approximately 58% yield reduction in test plots of susceptible cultivars. It was arduous to manage the disease, therefore by investigating the bio-control potential of Pseudomonas fluorescens for the successful management of R. solani causing sheath blight disease. The results showed that the bacterial antagonist P. fluorescens has exhibited strong inhibition against R. solani with 76.40 Per cent over control in dual culture technique. With regard to poisoned food technique the culture filtrates of P. fluorescens (Pf3) at 15 and 20 per cent conc. completely inhibited the mycelial growth of R. solani. In addition to the disease control, the isolate Pf3 recorded the maximum root and shoot length; with germination percentage (96.18) and vigour index (2429.50) thereby it promotes plant growth and seed germination.

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Krishnaveni, Varala, Savita Ekka, H. C. Lal et N. Kudada. « Cross Inoculation and Host Range Studies of Rhizoctonia solani Kuhn Infecting Small Millets ». International Journal of Current Microbiology and Applied Sciences 9, n^o 11 (10 novembre 2020) : 1458–68. http://dx.doi.org/10.20546/ijcmas.2020.911.172.

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Neha, KV, R. Naveenkumar, P. Balabaskar et P. Manikandan. « Evaluation of fungicides against sheath blight of rice caused by Rhizoctonia solani (Kuhn.) ». ORYZA- An International Journal on Rice 54, n^o 4 (2017) : 470. http://dx.doi.org/10.5958/2249-5266.2017.00064.9.

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Articles de revues sur le sujet « Rhizoctonia solani kuhn »

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