Temperatura base para abertura de floretes e antocrono em gladíolo

Schwab, Natália Teixeira; Streck, Nereu Augusto; Uhlmann, Lilian Osmari; Ribeiro, Bruna San Martin Rolin; Becker, Camila Coelho; Langner, Josana Andréia

doi:10.1590/0034-737x201764060008

Cited by 9 publications

(14 citation statements)

References 10 publications

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“…The damages resulted in no flowering of the stems and stop in the development of the plant. In Experiment 2 there were no intense frosts and no damage was observed, corroborating with Schwab et al (2017), who state that the gladiolus tolerates low air temperatures, which gives the crop a good adaptation to subtropical regions (such as Southern Brazil), where the species can easily be grown during Spring and Fall (SCHWAB et al, 2015b).…”

Section: Resultssupporting

confidence: 81%

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: 81%

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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“…According to Schwab et al (2018), only extreme temperatures (above 35°C and below 0°C) decreased the commercial quality of stems of plants grown in the South region of Brazil.The air temperatures were even lower in Season 2, the lowest temperatures from May to June were lower than 10°C for 30 days in Curitibanos, 22 days in Concórdia, and 18 days in Rio do Sul (Figure 1). The lowest temperatures close to the harvest season were lower than 5°C in Curitibanos, which are below of lowest temperature at the reproductive stage, which was 6°C (SCHWAB et al, 2017;UHLMANN et al, 2017). Nine frost occurrences were observed in this period, which froze the florets, stopping their development, and caused reddening symptoms in the sepals of the floral stems, resulting in a negative quantitative effect on the stems (Figure 3).…”

Section: Climatic Conditionsmentioning

confidence: 98%

“…This flower has been studied in the South region of Brazil for approximately 10 years; thus, its growth and development characteristics when grown in beds is widely known (SCHWAB et al, 2015;SCHWAB et al, 2017;UHLMANN et al, 2017;SCHWAB et al, 2018;TOMIOZZO et al, 2018;UHLMANN et al, 2019;TOMIOZZO et al, 2019;BECKER et al, 2020). However, problems in management practices for gladiolus plants persist and need to be adjusted, including those related to the intensive soil use.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Parameters of Floral Stems of Gladiolus Plants Grown Under Minimum Tillage System in Santa Catarina, Brazil

Bosco¹,

Stanck²,

Souza³

et al. 2021

Rev. Caatinga

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The objective of this work was to characterize the commercial quantitative standards of floral stems of gladiolus plants grown under minimum tillage and conventional systems in two harvest seasons in the state of Santa Catarina, Brazil. Experiments were conducted in locations with subtropical climate using soils classified as Typic Dystrudept (Cambissolo) and Typic Hapludox (Nitossolo). Gladiolus plants were grown in beds with intensive soil turning, and under minimum tillage system, in which soil turning was done only in the planting rows. Plants of the cultivars Red Beauty and White Goddess were evaluated in two harvest seasons, Mothers' Day, and Valentine's Day. A completely randomized experimental design with 12 replications was used; the treatments consisted of two harvest seasons and two soil management systems. The flower stem and inflorescence lengths, stem thickness, and number of florets were measured when the plants were at the harvest point to characterize their commercial quantitative standards. These data were used to distribute the stems into four classes (75, 90, 110 and non-marketable). The stem standard of gladiolus plants grown under minimum tillage system and the edaphoclimatic conditions of the state of Santa Catarina in the Mother's Day harvest met the flower market requirements, with most stems classified into the classes 90 and 110. Therefore, gladiolus plants can be grown under minimum tillage system without affecting the flower stem development. This work is the first step to promote the growth of flowers under a conservationist perspective, focused on a more sustainable agriculture.

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“…It was classified as emergence phase (VE), vegetative phase (VE -emergence to R1 -heading), and reproductive phase (R1 -heading to R2 -blooming). The thermal sum was calculated according to the methodology proposed by Ometto (1981) by considering the basal air temperature of 6 ºC (Schwab et al, 2017) and maximum basal air temperature of 40 ºC (Shillo;Hallevy, 1976), as per the following situations: Situation 1 (Equation 1):…”

Section: Methodsmentioning

confidence: 99%

Evaluation of water requirement, commercial quality, and yield response factor of gladiolus produced with automated irrigation in different growing periods

et al. 2020

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Water management and meteorological conditions during the cropping phase play an essential role in maintaining the commercial quality of cut flowers. This study evaluates water requirement, sensitivity to water deficit, and commercial quality of gladiolus ‘Amsterdam’ produced with automated irrigation in different growing periods. The experimental design was in randomized blocks with five replicates and consisted of the growing period factors (winter/spring 2018 and autumn/winter 2019) and the irrigation level factors (45% - L1, 60% - L2, 80% - L3, and 100% - L4 of crop water requirement). An automatic irrigation controller was used for irrigation management. At the harvest point, we evaluated the stems for the diameter, number of flowers, spike length, and floral stem length. We also evaluated stomatal conductance, leaf area, and duration of phenological phases on degree-days. The application of 100% crop water requirement using an automatic irrigation controller in the autumn/winter cycle results in better commercial classification. The treatment with 45% of the crop water requirement extended the total duration of the cycle. In conclusion, flower stems of better commercial classification are obtained with 100% of crop water requirement during the autumn/winter cycle.

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Temperatura base para abertura de floretes e antocrono em gladíolo

Cited by 9 publications

References 10 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

Quantitative Parameters of Floral Stems of Gladiolus Plants Grown Under Minimum Tillage System in Santa Catarina, Brazil

Evaluation of water requirement, commercial quality, and yield response factor of gladiolus produced with automated irrigation in different growing periods

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