Fatores envolvidos na supressividade a Rhizoctonia solani em alguns solos tropicais brasileiros

Rodrigues, Fabrício Á.; Corrêa, Guilherme Resende; Santos, M. Amélia; Filho, E. L. Borges

doi:10.1590/s0100-06831998000200009

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…In a previous study, the root rot index caused by R . solani in soybean seedlings was negatively correlated with aluminium saturation and clay content, whereas it was positively correlated with base saturation and soil pH (Rodrigues et al, 1998). On the other hand, liming has been reported as a practice that promoted reduction in the severity of clubroot in cauliflower (Santos et al, 2020), Fusarium wilt in spinach (Gatch & Du Toit, 2017) and bacterial wilt in tobacco (Li et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of limestone dose on the incidence of Rhizoctonia root rot and soybean yield in four soil types

et al. 2022

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Rhizoctonia root rot (RRR) is a disease caused by the soilborne pathogen Rhizoctonia solani, which kills soybean plants in patches over croplands. Control is difficult because the pathogen survives in the soil and has a wide host range; therefore, cultural control methods might help to diminish disease pressure. The objective of this study was to evaluate liming as a strategy to reduce the incidence of RRR in soybean grown in four soil types: acrisol (Ac), cambisol Ta (CaTa), cambisol Tb (CaTb) and nitisol (Nit).The treatments were arranged in a factorial design of four doses of limestone (0, 3, 6 and 9 t/ha) at two sites within each field (inside and outside a Rhizoctonia patch).The incidence of RRR inside the patch was on average 40.3% whereas outside it was 1.2%. The reduction in disease incidence was 3.9%, 3.7%, 3.6% and 1.8% per 1000 kg of limestone applied for the Ac, CaTa, CaTb and Nit soils, respectively. The highest soybean yield was of 4713 and 3349 kg/ha for the Ac and Nit soils with application of 6.6 and 6.2 t/ha of limestone, respectively. Soybean yield in the cambisols increased linearly with liming, with an increase in yield of 121 and 172 kg/ha in CaTa and CaTb, respectively, for each 1000 kg of limestone applied. Thus, liming reduced the incidence of RRR in all soils and promoted better soybean nutrition, increasing soybean yield. Therefore, liming is a practice that contributes to both soil fertility and disease control.

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Section: Introductionmentioning

confidence: 99%

Effect of limestone dose on the incidence of Rhizoctonia root rot and soybean yield in four soil types

et al. 2022

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Soil chemical and physical attributes associated with Rhizoctonia root rot of soybean in southern Brazil

Balbinotti,

Escosteguy,

Klein

et al. 2023

Plant Soil

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Trichoderma: biological control efficiency and perspectives for the Brazilian Midwest states and Tocantins

et al. 2022

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Brazil is one of the world leaders in the agribusiness sector tending to directly influence a growing dependence on imported inputs, specifically synthetic agrochemicals. At the state level, in 2013, Tocantins stood out in first place in the ranking of agrochemical consumers, however, these products can cause several problems, such as poisoning to humans, environmental contamination, and increased resistance to phytopathogens. Biological control is an alternative to the use of agrochemicals towards eliminating pests naturally by using living organisms called Biological Control Agents (BCA). Currently, fungi of the Trichoderma genus are some of the most used organisms in biological pest control for their relevant characteristics that favor them in terms of survival in the environment, such as high capacity to adapt to ecological conditions, potential to colonize the rhizosphere of plants, mycoparasitism, production of volatile and non-volatile metabolites. In addition, it works on plant growth and productivity. In general, the use of Trichoderma favors the control of soil pathogens, such as Rhizoctonia, Pythium, Sclerotinia, and nematodes. Thus, this review aims to demonstrate the importance of using Trichoderma in biological control, as well as to present an overview and perspectives of research developed by respondents in the Brazilian Midwest region and Tocantins state.

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Fatores envolvidos na supressividade a Rhizoctonia solani em alguns solos tropicais brasileiros

Cited by 4 publications

References 7 publications

Effect of limestone dose on the incidence of Rhizoctonia root rot and soybean yield in four soil types

Effect of limestone dose on the incidence of Rhizoctonia root rot and soybean yield in four soil types

Soil chemical and physical attributes associated with Rhizoctonia root rot of soybean in southern Brazil

Trichoderma: biological control efficiency and perspectives for the Brazilian Midwest states and Tocantins

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