PhenoGlad: A model for simulating development in Gladiolus

Uhlmann, Lilian Osmari; Streck, Nereu Augusto; Becker, Camila Coelho; Schwab, Natália Teixeira; Benedetti, Rômulo Pulcinelli; Charão, Andrea Schwertner; Ribeiro, Bruna San Martin Rolim; Silveira, Waleska Bolson; Backes, Fernanda Alice Antonello Londero; Alberto, Cleber Maus; Muttoni, Martina; Paula, Gizelli Moiano de; Tomiozzo, Regina; Bosco, Leosane Cristina; Becker, Dislaine

doi:10.1016/j.eja.2016.10.001

Cited by 38 publications

(83 citation statements)

References 37 publications

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“…For the PL-R2, there was an increase in the length of the crop developmental cycle when agrown in the coldest periods of the year (May, June, July and August plantings), compared to those cultivated in the warmer months (Table 2). These results agree with Uhlmann et al (2017), who found a shortening of the gladiolus development cycle with the delay of the planting date from July to September for the conditions of three locations in the state of Rio Grande do Sul and with the results of Shillo and Halevy (1976c) which state that when grown in summer, the gladiolus flowers in a shorter time interval than when grown in the winter. Means followed by the same capital letter in the row and means followed by the same lowercase letter in the column do not differ statistically by the Tukey Test at 5%.…”

Section: Resultssupporting

confidence: 82%

“…Variations in the duration of developmental phase among cultivars in the same planting date are due to genotype characteristics, such as that found by Uhlmann et al (2017) (Table 1) to which they were exposed, as discussed previously.…”

Section: Resultsmentioning

confidence: 86%

“…For both cultivars, after the frost event, there was an early senescence of the open buttons and the no opening of those buttons that were closed on the date of the event, which senesced before opening. Uhlmann et al (2017), in their model for simulating development in gladiolus, alert the possibility of the death of floral stems due to the occurrence of low air temperature (frost). Nowak et al (1992) state that flowers of subtropical and tropical origin should not be exposed to temperatures lower than 4 °C and 7 °C, respectively, because below these temperatures chilling may occur, presenting symptoms such as flower discoloration, necrotic lesions on the petals and on the leaves, and delay in opening the floral button.…”

Section: Resultsmentioning

confidence: 99%

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Duração do ciclo e danos por altas e baixas temperaturas em gladíolo em função da época de plantio

Schwab¹,

Streck²,

Uhlmann³

et al. 2018

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The planting date is an important factor affecting the developmental cycle and quality of final product. Indications from the literature are that gladiolus is a species that can be cultivated throughout the year, but in some periods, adverse conditions may occur, reducing the quality of the flower. Two field experiments (Experiment 1: August 2011 to July 2012 and Experiment 2: August 2012 to July 2013) were conducted in Santa Maria, RS, Brazil, to quantify the influence of planting dates on the duration of the developmental cycle and on the quality of flower stems in gladiolus, identifying possible damages by high and low temperatures in the final product. It is concluded that it is possible to cultivate gladiolus throughout the year, but the duration of gladiolus cycle is higher when planting is carried out in periods of low temperatures, and this is important for scheduling the planting date, mainly for meeting specific market demand (commemorative dates). Extreme temperatures (above 35 ºC and below 0 ºC) reduce the commercial flowers quality and even cause the death of plants. Keywords: Gladiolus x grandiflorus Hort., development cycle, extreme temperatures, frost. RESUMODuração do ciclo e danos por altas e baixas temperaturas em gladíolo em função da época de plantio A época de plantio escolhida para cultivar uma espécie é fator determinante na duração do ciclo de desenvolvimento e na qualidade do produto colhido. O gladíolo é uma espécie que pode ser cultivada ao longo do ano, porém, em alguns períodos poderão ocorrer condições adversas ao cultivo, reduzindo sua qualidade. Foram conduzidos dois experimentos de campo em Santa Maria, RS, (Experimento 1: de agosto de 2011 a julho de 2012 e Experimento 2: de agosto de 2012 a julho de 2013) a fim de quantificar a influência da época de plantio na duração do ciclo e na qualidade das hastes de gladíolo, identificando possíveis danos por altas e baixas temperaturas no produto final. Conclui-se que é possível cultivar gladíolo ao longo do ano, porém a duração do ciclo de desenvolvimento do gladíolo é maior quando o plantio é realizado em períodos de baixas temperaturas, sendo esse dado importante para a programação da data de plantio, especialmente quando se desejar colher em datas pontuais (datas comemorativas). Temperaturas extremas (acima de 35 ºC e abaixo de 0 ºC) reduzem a qualidade comercial das hastes e até mesmo causam a morte da planta. Palavras-chave: Gladiolus x grandiflorus Hort., ciclo de desenvolvimento, temperaturas extremas, geada.

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

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Duração do ciclo e danos por altas e baixas temperaturas em gladíolo em função da época de plantio

Schwab¹,

Streck²,

Uhlmann³

et al. 2018

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“…The WE already was included on the SimulArroz model, and the error observed for rice hybrid and varieties was equal to 0.98 leaf (RIBAS et al, 2017). For gladiolus plants, the WE is part of the PhenoGlad model with an error of 0.5 leaf (UHLMANN et al, 2017). Another example is for cassava plants in which the WE was included in the Simanihot model with a mean error of 6.76 leaves (TIRONI et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Observed and estimated leaf appearance of landrace and improved maize cultivars

et al. 2017

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The objective of this study was to compare the simulations of leaf appearance of landrace and improved maize cultivars using the CSM-CERES-Maize (linear) and the Wang and Engel models (nonlinear). The coefficients of the models were calibrated using a data set of total leaf number collected in the 11/04/2013 sowing date for the landrace varieties ‘Cinquentinha’ and ‘Bico de Ouro’ and the simple hybrid ‘AS 1573PRO’. For the ‘BRS Planalto’ variety, model coefficients were estimated with data from 12/13/2014 sowing date. Evaluation of the models was with independent data sets collected during the growing seasons of 2013/2014 (Experiment 1) and 2014/2015 (Experiment 2) in Santa Maria, RS, Brazil. Total number of leaves for both landrace and improved maize varieties was better estimated with the Wang and Engel model, with a root mean square error of 1.0 leaf, while estimations with the CSM-CERES-Maize model had a root mean square error of 1.5 leaf.

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“…One of the factors that prevents the expansion of the gladiolus in RS is the difficulty in determining the date of planting of the corms to harvest the floral stems at the desired date (Uhlmann et al, 2017). Environmental factors, such as air temperature, have a great influence on the length of the gladiolus development cycle, and for the State of Rio Grande do Sul, early-cycle cultivars have a cycle ranging from planting to harvest between 69 to 121 days, (Becker et al, 2017). It is important to use tools such as mathematical models to determine the optimal planting date (Becker et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

A cultura do gladíolo como alternativa de diversificação e renda na pequena propriedade familiar

Uhlmann

Becker

Tomiozzo

et al. 2019

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Flower crops are an alternative for diversification in small farms, being gladiolus an option of cut flower. The objective of this study was to disseminate the gladiolus crop as an alternative for diversification and profit for small farms through an extension project where crop management practices were demonstrated during its development cycle. An extension project was carried out in partnership with a rural extension agency, EMATER/RS-ASCAR, to identify the farmers interested in diversifying their production system for growing gladiolus. The extension project was developed in four counties in the Central region of the Rio Grande do Sul/Brazil. Together with the extensionists of EMATER/RS-ASCAR, farmers were assisted during the entire production cycle and learned the management practices from planting to harvesting. Altogether, approximately 2,400 gladiolus spikes were produced, which were marketed one week before and during Mother's Day week at local fairs. In all the counties, the demand and consumption of the flower stems were high, demonstrating acceptance of the consumers of gladiolus stems on Mother's Day. The gladiolus production has proven to be profitable for small family properties. This system encourages the production in short-chains, contributes to the growth of local flower production and may contribute for decreasing rural exodus and sustainability for future generations. ResumoA cultura do gladíolo como alternativa de diversificação e renda na pequena propriedade familiar O cultivo de flores é uma alternativa de diversificação de produção e renda para as propriedades familiares, sendo o gladíolo uma opção de flor de corte. O objetivo deste trabalho foi divulgar a cultura do gladíolo como alternativa de diversificação e renda para pequenos produtores rurais através de um projeto de extensão onde foram demonstradas as técnicas de manejo da cultura durante o seu ciclo de desenvolvimento. Para isso, foi firmada uma parceria com a instituição de extensão rural EMATER/RS-ASCAR, com o intuito de identificar produtores interessados em cultivar o gladíolo em suas propriedades. O projeto de extensão foi desenvolvido em cinco municípios da região da Depressão Central do Rio Grande do Sul. Juntamente com os extensionistas da EMATER/RS-ASCAR, foi acompanhado o ciclo de desenvolvimento do gladíolo, indicando aos produtores as principais técnicas de manejo do plantio à colheita. Ao todo, foram produzidas aproximadamente 2400 hastes de gladíolo, que foram comercializadas em feiras locais no Dia das Mães. Em todos os locais houve grande procura e consumo das hastes florais, demostrando aceitação do consumidor por hastes de gladíolo para o Dia das Mães. Esta atividade demostrou ser rentável aos produtores familiares. Este sistema de produção incentiva a produção em cadeias curtas, contribui para o crescimento da produção local de flores e pode contribuir para diminuir o êxodo rural e a sustentabilidade das futuras gerações no campo. Palavras-chave: Gladiolus x grandiflorus, extensão rural, Dia das Mães, planejame...

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PhenoGlad: A model for simulating development in Gladiolus

Cited by 38 publications

References 37 publications

Duração do ciclo e danos por altas e baixas temperaturas em gladíolo em função da época de plantio

Duração do ciclo e danos por altas e baixas temperaturas em gladíolo em função da época de plantio

Observed and estimated leaf appearance of landrace and improved maize cultivars

A cultura do gladíolo como alternativa de diversificação e renda na pequena propriedade familiar

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