Efeito do pH do solo em diferentes níveis de concentração de inóculo no controle de Plasmodiophora brassicae

Ruaro, Lucimeris; Neto, Vismar da Costa Lima; Motta, Antônio Carlos Vargas

doi:10.1590/s0100-54052010000100002

Cited by 9 publications

(13 citation statements)

References 9 publications

(6 reference statements)

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“…in the area, and adverse weather conditions, i.e., the long dry period in the initial phase of the crop cycle. This spore density is considered intermediate (Narisawa et al, 2005;Ruaro, Lima Neto, & Motta, 2010) and is related to an intermediate to high probability of the occurrence of clubroot in Chinese cabbage (Brassica rapa var. pekinensis).…”

Section: Effect Of the Application Of Limestone And The Addition Of Gmentioning

confidence: 99%

Use of limestone and agricultural gypsum in cauliflower crop management and clubroot control in mountain farming

et al. 2020

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The effects of the dose and application method of limestone - broadcast or in furrow - and of agricultural gypsum on soil fertility, the control of clubroot, and cauliflower development in mountain farming areas were evaluated. Initially, four doses of broadcast limestone (0.0, 1.0, 2.0, and 4.0 Mg ha-1) and two cauliflower cultivars (Sharon and Piracicaba Precoce) were analyzed. A second experiment evaluated limestone (4.0 Mg ha-1) application treatments: broadcast and in furrow, broadcast limestone + gypsum (3.0 + 1.0 Mg ha-1), and broadcast gypsum (1.0 Mg ha-1). Soil fertility was improved, and significant increases were observed in the total and healthy root volume with increasing doses of limestone. With 4.0 Mg ha-1, a 58 and 85% increase in yield was observed in Sharon and Piracicaba, respectively, compared to the control. Treatments with limestone and limestone + gypsum, regardless of the application method, elevated pH (≥ 10%), base saturation (V%) (≥ 37%), and calcium (Ca) contents (≥ 100%), and reduced the levels of aluminum ions (Al3+) (≥ 60%) and clubroot severity (≥ 64%) and favored biomass accumulation (≥ 27%) and yield (≥ 9.2%). The application of limestone in the furrow yielded results similar to the broadcast application.

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Section: Effect Of the Application Of Limestone And The Addition Of Gmentioning

confidence: 99%

Use of limestone and agricultural gypsum in cauliflower crop management and clubroot control in mountain farming

et al. 2020

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“…In contrast, the application of 2.1 t ha −1 of dolomite limestone to a cabbage field in Colombia raised pH from 6.2 to 6.5 but did not reduce clubroot, probably because the treatment did not sufficiently change the soil pH or Ca 2+ concentration (Botero‐Ramírez et al ., ). In two other studies in Brazil, a lack of success in reducing clubroot with liming was attributed to high levels (unspecified) of pathogen inoculum in the soil (Ruaro et al ., ; Kowata‐Dresch & May‐De Mio, ).…”

Section: Clubroot Management In Latin Americamentioning

confidence: 99%

Clubroot disease in Latin America: distribution and management strategies

et al. 2019

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Clubroot caused by Plasmodiophora brassicae is an important disease of cruciferous crops worldwide. In Latin America (from Mexico to Chile, including the Caribbean), most of the area in cruciferous crops is devoted to oilseed rape (Brassica napus; c. 230 600 ha) in Brazil, Chile, Paraguay, Uruguay and Argentina, while cruciferous vegetables such as cabbage, cauliflower, broccoli and Brussels sprouts (40 900 ha) are cropped intensively on small acreages across the region. Although clubroot is present in most Latin American countries, there have been very few studies of P. brassicae. Clubroot research in Latin America has focused mainly on adapting disease management strategies developed in temperate climates to tropical climates, including liming, biological control and genetic resistance. This review summarizes the management strategies used in Latin America to reduce the impact of clubroot, including novel strategies when compared with temperate regions, such as a crop rotation with aromatic plant species and the use of biological control with Trichoderma spp. Latin America has unique characteristics relative to temperate countries such as high humidity, warm temperatures and acidic soil that impact the interaction between P. brassicae and its plant hosts, so more research is required.

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“…Although, the first report of clubroot in Brazil occurred in the kale crop in 1934, in São paulo (VIÉGAS & TEIXEIRA, 1943), there is still little research on the disease in the country (HASSE et al, 2007;RUARO et al, 2010;KOWATA-DRESCH & MAY-DE MIO, 2012;BHERING et al, 2017;SANTOS et al, 2017;BHERING et al, 2020;, especially in kale. Most of the information about the disease and proposed management strategies are based on studies carried out in temperate regions, mainly in the canola, Chinese cabbage, cauliflower and broccoli crops (WEBSTER & DIXON, 1991;NIWA et al, 2008;DIXON, 2009;GOSSEN et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Severity of clubroot in kale related to management practices and soil attributes

et al. 2022

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Clubroot disease, caused by Plasmodiophora brassicae, limits the production of Brassica spp. worldwide. Little is known about the factors related to the development of the disease in kale (Brassica oleracea var. acephala) plants and in crops in mountainous areas under tropical conditions. This study examined the severity of clubroot in kale crops as well as identify potential flaws in management and the soil and relief factors related to its occurrence. The study was conducted in 24 kale fields in the mountainous region of Rio de Janeiro (Brazil). Soil and kale growth management practices adopted in the region were identified and samples of soil and plants were collected. Subsequently, soil and relief attributes, disease severity, biomass and nutrient and Al contents and accumulation in the plants were determined. There was a high spread of the pathogen in the areas. Inappropriate and recurrent practices in the region were detected, e.g., sequential cultivation of host species, low adoption of soil fertility analysis and liming and conservation practices, and community use of agricultural machinery and implements without prior cleaning. The disease was associated with more acidic soils, subject to greater water accumulation and with high levels of Al3+ as well as with higher Al contents and accumulation in the roots. Management practices must be adopted in the region to reduce the potential inoculum of P. brassicae and to increase soil fertility.

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Efeito do pH do solo em diferentes níveis de concentração de inóculo no controle de Plasmodiophora brassicae

Cited by 9 publications

References 9 publications

Use of limestone and agricultural gypsum in cauliflower crop management and clubroot control in mountain farming

Use of limestone and agricultural gypsum in cauliflower crop management and clubroot control in mountain farming

Clubroot disease in Latin America: distribution and management strategies

Severity of clubroot in kale related to management practices and soil attributes

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