Formação de mudas de cafeeiro em substratos oriundos de diferentes métodos de desinfestação

Miranda, Gustavo Rabelo Botrel; Guimarães, Rubens José; Botrel, Élberis Pereira; Campos, Vicente Paulo; Almeida, Gustavos Rennó Reis; Gonzalez, Raphael Garcia

doi:10.1590/s0006-87052006000200012

Cited by 6 publications

(5 citation statements)

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“…These results were also verified by Miranda et al (2006) who reported that coffee seedlings cultivar Paraíso H 419-1 showed growth retardation in the 15-day solarization treatment. In the work developed by Cruz (2020), a different behavior is observed, as there is no significant change in the weight of plant matter in an experiment evaluated in cabbage plants, planted in treated substrate and untreated in a solarizer.…”

Section: Discussionsupporting

confidence: 80%

Evaluation of a prototype of soil thermal solarizer for control of gall nematode in the production of coffee seedlings

Uchôa

Junior

Fernandes

et al. 2023

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In coffee crops at Rondônia State of Brazil, there is an increase in phytonematode epidemics.Since most local coffe nurseries at Rondônia use soil as substrate for seedling production, this work aimed to test the minimum exposure time at 60 ºC to control of root-knot nematodes Meloidogyne incognita in soil by means of solar heating, using a solarizer, in an adapted version for better heating perfomance. The used solarizer prototype was built of a wooden box covered with metal sheets, thermal blankets, painted black, with aluminum pipes of 0.5 cm in diameter at the bottom of the box that circulates the water heated by the collector box. The soil was inoculated with a suspension of 1000 eggs + J2 of M. incognita per liter and placed in equipment with a capacity of 150 liters. Exposure times at a minimum temperature of 60 °C were evaluated, with 14 treatments: C1 (non-inoculated and not autoclaved), C2 (inoculated), C3 (non-inoculated and autoclaved) T0', T15', T30', T45', T60', T180', T360', T720', T1440', T2880' and T4320' . The temperature was measured every 15 minutes using a skewer-type digital thermometer. The soil was removed according to the exposure time, and placed in 8-liter pots, in which clone 125 and BRS 2357 coffee seedlings, susceptible to M. incognita , were transplanted and growing in a greenhouse for 180 days. The experimental design used was DIC, with 6 replications, each seedling as na experimental unit. Reproduction factor (FR), number of eggs per plant (NOGR) and number of galls per gram of root (NGGR) were evaluated. The FR, NOGR and NGGR variables reduced with exposure time. All treatments showed an effect to control the population of M. incognita in infected soils, with 100% efficacy of pathogen eradication from the T45' treatment, 60 minutes of exposure is recommended for the production of Coffea canephora seedlings. Taken together, thir work showed the high potential of thr solorizer to contribute in the root-knot nematode control to seedling production.

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Section: Discussionsupporting

confidence: 80%

Evaluation of a prototype of soil thermal solarizer for control of gall nematode in the production of coffee seedlings

Uchôa

Junior

Fernandes

et al. 2023

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“…The vegetative growth of coffee plants was evaluated at 7, 21, 35, 49, and 63 days after application (DAA) of the herbicide. The parameter evaluated were: plant height, from the stem base to the meristematic apex; stem base diameter, measured with a caliper (Miranda et al, 2006); number of sprouts; and total leaf area (TLA) Leite;Ferreira, 2008), measured using the equations: Leaf area (LA) = leaf length × leaf width × 0.663 (correction factor), and TLA = ∑LA. One plant per plot was collected for this destructive analysis.…”

Section: Methodsmentioning

confidence: 99%

Hormetics effects of glyphosate on coffee plants – guidelines for coffee

Terra¹,

Terra²,

Aparecido³

et al. 2022

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“…Desta forma, a inoculação com espécies de FMA, favorece o crescimento das mudas (PouyuRojas e Siqueira, 2000), aumenta a tolerância ao estresse provocado pelo transplantio, aumenta o índice de sobrevivência após o transplantio, além de reduzir o tempo para formação da muda no viveiro (Miranda et al, 2006). O alto potencial do uso de fungos micorrízicos na formação de mudas de cafeeiro é caracterizado pela elevada dependência micorrízica do cafeeiro, principalmente, em solos de baixa fertilidade (Colozzi Filho et al, 1994).…”

Section: Introductionunclassified

Sensibilidade de plantas de café micorrizadas à herbicidas

et al. 2014

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Resumo -Objetivou-se com esse trabalho avaliar o efeito de herbicidas aplicados em pós-emergência em plantas de café arábica inoculadas com fungos micorrízicos arbusculares. O experimento foi conduzido em esquema fatorial 2 x 6, sendo mudas de café arábica cultivar Catuaí IAC 99 inoculadas e não inoculadas com fungos micorrízicos arbusculares (Fator 1), e cinco herbicidas (chlorimuron-ethyl, oxyfluorfen, fluazifop-p-butil, fomesafen, [fluazifop-pbutil+fomesafen]) e uma testemunha (Fator 2), com quatro repetições. As mudas inoculadas com fungos micorrízicos arbusculares (Rhizophagus clarus e Gigaspora margarita) e produzidas em sacolas plásticas contendo solo e esterco (3:1) foram transplantadas para vasos de 20 dm 3 de solo, no estádio de cinco pares de folhas. No estádio de sete pares de folhas foram submetidas a aplicação dos herbicidas. Após a aplicação do herbicida foram mensuradas: porcentagem de intoxicação, altura, área foliar, volume radicular, matéria seca das folhas e raízes, teor nutricional da folha e colonização radicular. Observou-se que a aplicação de chlorimuron-ethyl, oxyfluorfen e [fluazifopp-butil+fomesafen] resultaram em menor incremento das variáveis e maior intoxicação. O fluazifop-p-butil apresentou maior seletividade para as plantas de café. As plantas inoculadas obtiveram maior colonização radicular de fungos micorrízicos que as não inoculadas. Apenas o fluazifop-p-butil não causou interferência na colonização, sendo que as plantas inoculadas mostraram menor intoxicação que as não inoculadas. Considerando todos os parâmetros avaliados conclui-se que as plantas de café arábica cultivar Catuaí Vermelho IAC 99 inoculadas com fungos micorrízicos arbusculares apresentaram maior tolerância ao fluazifop-p-butil. Da mesma forma, conclui-se também que plantas de café quando inoculadas com FMAs apresentaram-se mais tolerantes aos efeitos negativos dos herbicidas chlorimuron-ethyl, fomesafen, oxyfluorfen e [fluazifop-p-butil+fomesafen]. Palavras-chaves: Coffea arabica, fungos micorrízicos arbusculares, seletividade, tolerância Abstract -The objective of this work was to evaluate the effects of herbicides applied in postemergence of Arabic coffee plants inoculated and non-inoculated with arbuscular mycorrhizal fungi. The experiment was conducted in a factorial arrangement 2 x 6, being seedlings of Arabic coffee (Catuaí IAC 99 cv) inoculated and non-inoculated with mycorrhizal fungi (Factor 1), and five herbicides (chlorimuron-ethyl, oxyfluorfen, fluazifop-p-butil, fomesafen, [fluazifop-p-butil + fomesafen]) and a control treatment (Factor 2), with four replications. The seedlings inoculated 1 Recebido para

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Formação de mudas de cafeeiro em substratos oriundos de diferentes métodos de desinfestação

Cited by 6 publications

References 1 publication

Evaluation of a prototype of soil thermal solarizer for control of gall nematode in the production of coffee seedlings

Evaluation of a prototype of soil thermal solarizer for control of gall nematode in the production of coffee seedlings

Hormetics effects of glyphosate on coffee plants – guidelines for coffee

Sensibilidade de plantas de café micorrizadas à herbicidas

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