Fenologia da goiabeira 'Paluma' sob diferentes sistemas de cultivos, épocas e intensidades de poda de frutificação

Serrano, L. A. L.; Marinho, Cláudia Sales; Lima, Inorbert de Melo; Martins, M. V. V.; Ronchi, Cláudio Pagotto; Tardin, F. D.

doi:10.1590/s0006-87052008000300019

Cited by 13 publications

(19 citation statements)

References 11 publications

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“…On the other hand, the curve that represented fresh weight, showed characteristics of a double sigmoid, where it was fitted to a polynomial equation of the third degree with R 2 = 0.98, for the two densities studied ( Figure 3B). Thus, the curve showed three distinct phases of behavior ( Figure 3B), similar to sigmoidal curves that occur during the development of fruits (Serrano, 2007). The first phase of the curve was characterized by a slow increase in weight up to 64 days ( Figure 3B).…”

Section: Resultssupporting

confidence: 55%

Populational density and harvest age of carrots for baby carrot manufacture

Simões

Moreira²,

Costa³

et al. 2010

Hortic. Bras.

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The quality of baby carrots may be associated to the standard of the raw material that in turn, may be influenced by agronomic practices. Thus, the effect of planting density and harvest age were assessed on physical and morphological characteristics, yield and end quality of intact and minimally processed carrots in the form of baby carrots. A randomized block experimental design was used with the density in the plots (4 x 20 cm and 4 x 7.5 cm) and the harvest age in the subplots (50, 57, 64, 71, 78, 85, 92, 99 and 106 days), with five replications. The experimental unit consisted of 25 plants. The assessments of diameter, length, yield, secondary phloem translocation with the cambio and total carotenoids were decisive in selecting the carrot harvest age for baby carrot manufacture. Under the 4 x 20 cm and 4 x 7.5 cm adensed conditions, harvested between 85 and 92 days, carrot roots became thinner and more orange in color (with maximum carotenoid accumulation), larger and with satisfactory yields and therefore more acceptable for minimal processing in the form of baby carrots. Thus the decision of populational density associated to harvest age will depend on the market demand, on price, quality and other variables. The use of adensed cropping with early harvests may lead to obtain carrots and respective baby carrots that are more acceptable for commercialization.

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Section: Resultssupporting

confidence: 55%

Populational density and harvest age of carrots for baby carrot manufacture

Simões

Moreira²,

Costa³

et al. 2010

Hortic. Bras.

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“…Even assuming that the maximum fixation index of the guava fruit is 20% during flowering and fruiting phases (7,27), all buds and fruits must be protected. As far as new control methods or new rust resistant cultivars are developed, fungicides should be used in the susceptible phases to keep as many healthy buds and fruits as possible to ensure the highest guava yield.…”

Section: Discussionmentioning

confidence: 99%

Guava fruit loss caused by rust

2014

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107The aim of this paper was to estimate the loss caused by rust (Puccinia psidii) to 'Paluma' guava production in orchards located in Rio de Janeiro State. The disease intensity on the reproductive organs of plants was observed during two chemical control experiments carried out in 2003 and 2004. The loss was estimated based on simple linear regression and the production reduction (fruit number and weight ha -1 ) on the incidence of diseased buds and fruits. In the first experiment, no relationship was established between incidence of diseased buds and loss since there was a Martins, M.V.V.; Silveira, S.F.; Maffia, L.A. Guava fruit loss caused by rust. Summa Phytopathologica, v.40, n.2, p.107-113, 2014. Additional keywords: Psidium guajava, Myrtaceae, Puccinia psidiiABSTRACT delay in spraying and the incidence of buds showing rust was high (mean of 47%) at the beginning of flowering. In the second experiment (2003)(2004), spraying occurred at the beginning of the epidemics and there was a linear relationship between incidence of diseased buds and loss, justifying fungicide intervention at this stage. For the fruiting stage, a significant relationship was found between incidence of diseased fruits and loss in both experiments. In the absence of chemical control, rust reduced fruit production by around 90%.

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“…A partir do início do surgimento dos botões florais, entre 56 e 77 dias após a poda (Serrano et al, 2008), foram avaliadas as incidências de botões e,ou, frutos doentes nos quatro pontos cardeais da planta, totalizando 500 botões e,ou, frutos por planta. A incidência da ferrugem foi avaliada em intervalos de 7 a 14 dias, com seis, dez e sete avaliações para as épocas I, II e III, respectivamente.…”

Section: Methodsunclassified

“…Entretanto, o surgimento destes brotos não é uniforme, razão pela qual a florada ocorre durante o período de setembro a novembro e, a maturação dos frutos (safra principal), no período de janeiro a março (Serrano et al, 2008). Por meio da prática da poda de frutificação, associada à irrigação e à adequada adubação, há a possibilidade de se produzirem frutos ao longo de todo o ano, inclusive na entressafra (abril a novembro), quando os preços são mais elevados (Serrano et al, 2007).…”

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Incidência e controle químico da ferrugem da goiabeira em diferentes épocas de poda na região norte do Espírito Santo

et al. 2012

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Incidence and chemical control of guava rust in different pruning times in the north of Espírito Santo, BrazilIn the north of Espírito Santo State, Brazil, increasing occurrence of rust (Puccinia psidii G. Winter) has been observed in guava trees, causing fruit drop and yield losses. The objective of this work was evaluate the incidence and chemical control of guava rust in 'Paluma' guava trees pruned in different seasons. Three experiments were carried out in a randomized complete block design, with three different pruning times (January; May and October) and four fungicide spraying treatments (I -untreated check, II -copper oxychloride, III -tebuconazole and IV -tebuconazole + oxychloride copper). Plants pruned in January showed the highest maximum and final guava rust incidences and smallest number of fruits per plant. Regardless of pruning time, the effective rust control occurred in plants sprayed with tebuconazole and tebuconazole plus copper oxychloride fungicides. Four sprayings with tebuconazole pure or mixed with copper oxychloride were sufficient to mitigate the damage caused by guava rust. No norte do Estado do Espírito Santo, vem sendo observada a ocorrência crescente da ferrugem (Puccinia psidii G. Winter) nos pomares de goiabeira, ocasionando a queda de frutos novos e o declínio na produção. Este trabalho teve como objetivo avaliar tratamentos com fungicidas no controle da ferrugem em goiabeiras 'Paluma' podadas em diferentes épocas do ano. Foram realizados três experimentos, em delineamento em blocos ao acaso, com diferentes épocas de poda de frutificação (janeiro; maio e outubro) e quatro tratamentos fungicidas (I-testemunha -aplicação de água, II-oxicloreto de cobre, III-tebuconazole e IV-tebuconazole + oxicloreto de cobre). Observou-se que, quando a poda foi realizada em janeiro, houve as maiores incidências máxima e final da doença, acarretando menor número de frutos por planta. Dentre os fungicidas testados, tebuconazole isolado ou em mistura com oxicloreto de cobre foram os mais eficientes em controlar a doença nas três épocas de poda, inclusive na época de maior incidência da doença. Quatro pulverizações com tebuconazole, isolado ou em mistura com o oxicloreto de cobre, foram suficientes para minimizar os danos causados pela ferrugem da goiabeira. Palavras-chave:Psidium guajava L., Puccinia psidii G. Winter, poda de frutificação, fungicidas. 179Incidência e controle químico da ferrugem da goiabeira em diferentes épocas de poda na região...Rev.

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Fenologia da goiabeira 'Paluma' sob diferentes sistemas de cultivos, épocas e intensidades de poda de frutificação

Cited by 13 publications

References 11 publications

Populational density and harvest age of carrots for baby carrot manufacture

Populational density and harvest age of carrots for baby carrot manufacture

Guava fruit loss caused by rust

Incidência e controle químico da ferrugem da goiabeira em diferentes épocas de poda na região norte do Espírito Santo

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