Eficiência de argila silicatada no controle de Xanthomonas axonopodis pv. passiflorae, in vitro e em mudas de maracujazeiro-amarelo

Brancaglione, Priscila; Sampaio, Aloísio Costa; Fischer, Ivan Herman; Almeida, Aparecida Marques de; Fumis, Terezinha de Fátima

doi:10.1590/s0100-29452009000300014

Cited by 13 publications

(7 citation statements)

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“…In a previous study, Si enhanced the resistance to the coffee plant pathogen Cercospora coffeicola, with increase in cuticle thickness (POZZA et al, 2004). This increase is due mainly to the formation of a thicker layer of epicuticular wax, which hinders the penetration of the pathogen through the cuticle or stomata (POZZA et al, 2004;BRANCAGLIONE et al, 2009). It is possible that similar structures were induced in the lima bean leaves treated with calcium silicate in the present investigation, but further studies are needed to confirm this possibility.…”

Section: Resultssupporting

confidence: 50%

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Induction of resistance to Colletotrichum truncatum in lima bean

Gomes

Nascimento

2018

Arq. Inst. Biol.

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Anthracnose (Colletotrichum truncatum) is one of the major diseases of the lima bean culture, found in production fields, causing decrease in productivity. The objective of this study was to evaluate the effect of abiotic and biotic inducers applied in lima bean plants to reduce anthracnose severity. Lima bean accessions were used and treated with: the abiotic inducers calcium silicate (Agrosilício Plus) and silicate clay (Rocksil), using the 3 g dose.L-1; the biotic inducer citric biomass extract (Ecolife), at the dose of 3 mL.L-1; and distilled water as control. To evaluate the resistance induction, the results of severity and degree of resistance of fava bean at 7, 11, 15, 19 and 23 days after inoculation were considered according to the scale of grades and classes of reactions. The design was a randomized block in a factorial arrangement 4 × 15 (treatments × hits) with four blocks. Resistance inducers Agrosilicon Plus, Ecolife and Rocksil have potential to be used in the management of anthracnose in fava bean. The studied accesses showed degree of resistance, being able to be explored in relation to obtaining anthracnose resistant cultivars in future breeding programs of this crop.

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Section: Resultssupporting

confidence: 50%

“…2), achieving the lowest minimum value (0.7) among all treatments used on this sample. BRANCAGLIONE et al (2009) also found a significant effect of silicate clay on the preventive control of bacterial leaf spot (Xanthomonas axonopodis pv. Passiflorae) on seedlings of the yellow passion fruit plant (Passiflora edulis (Sims) f. flavicarpa (Deg.…”

Section: Resultsmentioning

confidence: 90%

Induction of resistance to Colletotrichum truncatum in lima bean

Gomes

Nascimento

2018

Arq. Inst. Biol.

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“…Bentonite is used as fertilizer and have been cited in the literature as a promising product in controlling plant pathogens BRANCAGLIONE et al, 2009). However, we are not aware of any information on the activity of bentonite as an insecticide.…”

Section: Mortality Of S Frugiperda and S Eridania Fed On Plants Trementioning

confidence: 99%

Inert powders alone or in combination with neem oil for controlling Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae

Silva¹,

Zorzetti²,

Santoro³

et al. 2016

SCA

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Laboratory studies was carry out to evaluated the potential of inert powders: bentonite, kaolin and diatomaceous earth (DE) applied as dust and aqueous suspension alone and associated with neem oil to the control Spodoptera eridania and Spodoptera frugiperda second instar larvae. In dust applications, 100% mortality of S. eridania, at the concentrations of 1.5 and 2.0 grams of bentonite, and 93.3% of S. frugiperda, at the concentration of 2.0 g were observed. DE at the height concentration (2.0 g) caused 76.2% mortality of S. eridania and 46.6% of S. frugiperda. Kaolin, in all concentrations, was the only treatment that did not differed from the control for S. eridania but was different, in the high concentration, for S. frugiperda. When the plants were treated, larvae of S. eridania fed in the treatment DE, had an increase of two days in larval period. For the sex ratio, the percentage of males was greater in the treatments with kaolin, for both species. When powders was applied suspended in water separately or combined with neem oil, the best results were observed in combined of the bentonite (10%) + neem, with 100% mortality for both species, and kaolin (10%) + neem with 78.5% and 95.6% mortality for S. frugiperda and S. eridania, respectively. These treatments were classified as non-additive synergistic. Key words: Bentonite. Diatomaceous earth. Kaolin. Sustainable agriculture. ResumoEstudos em laboratório foram realizados para avaliar o potencial dos pós inertes: bentonita, caulim e da terra de diatomáceas (TD), na forma sólida e em suspensão aquosa isoladamente e associados ao óleo de nim no controle das lagartas de segundo instar de Spodoptera eridania e Spodoptera frugiperda. Nas aplicações como pó, observou-se 100% de mortalidade para S. eridania nas concentrações de 1,5 e 2,0 g de bentonita e de 93,3% para S. frugiperda na concentração de 2,0 g. A TD na maior concentração (2,0 g) causou 76,2% de mortalidade em S. eridania e 46,6% de S. frugiperda. O caulim, em todas as concentrações, foi o único tratamento que não diferiu da testemunha para S. eridania, mas foi diferente, na maior concentração para S. frugiperda. Quando as plantas foram tratadas, lagartas de S. eridania alimentadas no tratamento TD, tiveram um aumento de dois dias no período larval. Para a razão sexual, a porcentagem de machos foi maior nos tratamentos com caulim para ambas as espécies. Quando os pós foram aplicados em suspensão em água separadamente ou em combinação com óleo de neem, os melhores resultados foram observados na combinação bentonita (10%) + neem, com 100% de mortalidade para ambas as espécies e caulim (10%) + neem com 78,5% e 95,6% de mortalidade para S. frugiperda e S. eridania, respectivamente. Estes tratamentos foram classificados como não aditivos sinérgicos. Palavras-chave: Agricultura sustentável. Bentonita. Caulim. Terra de diatomáceas.

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“…Alguns pós de rocha podem ser encontrados no mercado, mas a maioria das formulações testadas em experimentos pertence a fontes locais. Um pó de rocha silicatada comercial foi testada por Branchaglione et al (2009) que verificaram resultados positivos no controle da bacteriose do maracujazeiro.…”

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“…O enxofre faz parte de algumas recomendações de controle da antracnose, muito embora não tenha registro para a cultura (PIO RIBEIRO; MARIANO, 1995) e, além disso, o elemento está relacionado com o aumento da produtividade dos pomares de maracujá (SANTOS et al, 2007). Ainda com relação a utilização de argila silicatada, Branchaglione et al (2009) recomendaram doses de 1,0 a 2,0% para controle da bacteriose em plantas de maracujazeiro.…”

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Fungicidas e argila silicatada no controle da antracnose do maracujá amarelo

Medeiros¹,

Peruch²

2012

Sem. Ci. Agr.

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ResumoA antracnose, causada por Glomerella cingulata (anamorfo Colletotrichum gloesporioides), é a principal doença fúngica de parte aérea do maracujazeiro amarelo. Todavia, poucos estudos de controle da doença a campo têm sido publicados, motivo pelo qual é importante avaliar diferentes fungicidas e substâncias alternativas para o manejo da antracnose. Neste trabalho foram avaliados os seguintes tratamentos: tebuconazole (20g i.a./100L), oxicloreto de cobre (180g i.a./100L), argila silicatada (15g /L) e testemunha. A partir da avaliação da severidade da doença, determinou-se a área abaixo da curva de progresso da doença (AACPD), severidade final (SEVF) e as curvas de progresso da doença. O delineamento adotado foi inteiramente casualizado com cinco repetições. Tebuconazole e argila silicatada proporcionaram os melhores resultados no controle da doença pela redução significativa da AACPD e SEVF em relação à testemunha. Oxicloreto de cobre diferiu da testemunha apenas para SEVF. Tratamento com tebuconazole reduziu AACPD e SEVF em 75% e 71%, e argila silicatada em 82% as variáveis, respectivamente. Oxicloreto de cobre reduziu SEVF em 76%. As curvas de progresso da doença corroboram os resultados pelo menor crescimento da antracnose para tebuconazole e da argila silicatada. O Tebuconazole e a argila silicatada são eficientes no controle da antracnose do maracujazeiro. Palavras-chave: Passiflora edulis f. flavicarpa, Colletotrichum gloeosporioides, pó de rocha, oxicloreto de cobre, tebuconazole AbstractThe anthracnose, caused by Glomerella cingulata (anamorf Colletotrichum gloeosporioides), is the most important fungal disease for aerial parts of yellow passionfruit. However, few studies about anthracnose control in field conditions have been published. The objective of this research was to evaluate silicate clay and fungicides for anthracnose control. Treatments evaluated were: tebuconazole (20g i.a./100L), copper oxychloride (180g i.a./100L), silicate clay (15g /L) and control (untreated plants). The sanity of the plants was evaluated through area under disease progress curve (AUCPD), final severity (SEVF) and disease progress curves. Experimental design was completely randomized with five repetitions. Tebuconazole and silicate clay proportioned significant reduction for AUCPD and SEVF compared to control. Copper oxychloride reduced only SEVF. Treatment with tebuconazole reduced AUCPD and SEVF in 75% and 71%, and silicate clay in 82%, respectively. Copper oxychloride reduced SEVF in 76%. The disease progress curves confirmed results and showed lower growth of anthracnose for tebuconazole and silicate clay. Silicate clay and tebuconazole are efficient to control anthracnose in passionfruit.

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Eficiência de argila silicatada no controle de Xanthomonas axonopodis pv. passiflorae, in vitro e em mudas de maracujazeiro-amarelo

Cited by 13 publications

References 5 publications

Induction of resistance to Colletotrichum truncatum in lima bean

Induction of resistance to Colletotrichum truncatum in lima bean

Inert powders alone or in combination with neem oil for controlling Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae

Fungicidas e argila silicatada no controle da antracnose do maracujá amarelo

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