Chemical ripeners and different harvest periods in sugarcane in State of Paran, southern Brazil

Filho, Paulo Barbosa de Oliveira; Duarte, J. B.; Costa, Antônio Carlos Torres da; Oliveira, Paulo Sérgio Rabello de; Macedo, Eurides Küster; Guimarães, Vandeir Francisco; Bosquette, Willian

doi:10.5897/ajar2014.9142

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…In summary, juices from plants harvested at 30 DAS displayed best POL, purity, TRS, and RTS yields, corroborating results reported by Viana et al (2016) and Oliveira Filho et al (2016). Similarly, evaluating the response of sugarcane genotypes to plant growth regulators, verified significant increases of °Brix, POL, purity, and RTS over to sampling periods.…”

Section: Resultssupporting

confidence: 84%

TECHNOLOGICAL PROFILE OF SWEET SORGHUM JUICE cv. CMSXS-646 SUBMITTED TO CHEMICAL RIPENERS APPLICATION AND SAMPLING PERIODS

Moreira¹,

Viana²,

Mateus³

et al. 2018

RBMS

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- There is a little information about sweet sorghum crop behavior under chemical ripeners spraying management. Therefore, the aim of this study was to assess the technological profile of sweet sorghum (cv. CMSXS-646) juice under spraying of plant growth regulators and sampling periods. A randomized complete block experimental factorial design was used, with an additional control treatment (arrangement 2x2+1), corresponding to two chemical ripeners with three-doses for each product, glyphosate (0.2, 0.4, and 0.8 l c.p. ha-1) and methyl-sulfumeturon (10, 20, and 30 g c.p. ha-1), two sampling periods (15 and 30-days after spraying - DAS) and one control treatment (water spraying). After crop harvest, stalks were milled using a hydraulic press and the derived juice was assessed for total soluble solids (°Brix), apparent sucrose (POL), purity (PRT), reducing sugars (RS), total reducing sugars (TRS), fibers (FIB) and recoverable theoretical sugars (RTS). The dataset was subjected to the Shapiro-Wilk, Fisher, Tukey, Pearson and multiple linear regression statistical tests (p<0.05). There was an interaction between causes of variation for almost all assessed characteristics except to RTS, only affected by the sampling period. As conclusion, it is possible to grow sweet sorghum (cv. CMSXS-646) till thirty-days after spraying of chemical ripeners, treated by glyphosate 0.4 l c.p. ha-1 or sulfumeturon-methyl 10 g c.p. ha-1, because these doses caused feedstock with high °Brix, POL, total reducing sugars, purity levels.Keywords: Sorghum spp., phytorregulators, plant growth regulators, glyphosate, sulfumeturon-methyl. PERFIL TECNOLÓGICO DE CALDO DE SORGO SACARINO (cv. CMSXS-646) SUBMETIDO À APLICAÇÃO DE MATURADORES QUÍMICOS E ÉPOCAS DE AMOSTRAGEMRESUMO – Há poucas informações sobre o comportamento da cultura do sorgo sacarino sob manejo de aplicação de maturadores químicos. Portanto, o objetivo desta pesquisa foi avaliar o perfil tecnológico de caldo de sorgo sacarino cv. CMSXS-646 submetido à aplicação de maturadores químicos e períodos de amostragem. Aplicou-se o delineamento de blocos inteiramente casualizados, em esquema de fatorial (2x2+1), correspondente a dois maturadores químicos com três dosagens - glifosato (0,2; 0,4 e 0,8 l p.c. ha-1) e sulfumeturon-metil (10, 20 e 30 g p.c. ha-1); dois períodos de amostragem (15 e 30 dias após aplicação - DAA); e um tratamento controle (aplicação de água). Após a colheita, destinaram-se colmos à moagem, realizada em prensa hidráulica, para extração de caldo; avaliaram-se sólidos solúveis totais (°Brix), sacarose aparente (POL), pureza (PRT), açúcares redutores (AR), açúcares redutores totais (ART), fibras (FIB) e açúcares teóricos recuperáveis (ATR). Ao conjunto de dados, aplicaram-se testes estatísticos, Shapiro- Wilk, Fisher, Tukey, Pearson e regressão múltipla, ao nível de 5% de probabilidade. Houve interação entre as causas de variação para quase todas as características, exceto ATR, influenciado, somente, pelo período de amostragem. Concluiu-se que a aplicação dos maturadores químicos glifosato 0,4 l c.p. ha-1 e sulfumeturon-metil 10 g p.c. ha-1 apresentou um incremento na qualidade da matéria-prima com alto teor de °Brix, POL, açúcares redutores totais e níveis de pureza trinta dias após a pulverização dos maturadores.Palavras-chave: Sorghum spp., fitorreguladores, reguladores de crescimento vegetal,

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Section: Resultssupporting

confidence: 84%

TECHNOLOGICAL PROFILE OF SWEET SORGHUM JUICE cv. CMSXS-646 SUBMITTED TO CHEMICAL RIPENERS APPLICATION AND SAMPLING PERIODS

Moreira¹,

Viana²,

Mateus³

et al. 2018

RBMS

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“…Therefore, trinexapac-ethyl qualified as chemical are examples. In sugar-energy sector, raw materials ideal to the commercially production of ethanol must present more than 70.0% purity; otherwise, they are unqualified to such purpose (Oliveira Filho et al, 2016). Therefore, sweet sorghum cv.…”

Section: Puritymentioning

confidence: 99%

Trinexapac-Ethyl as Chemical Ripening Agent on Sweet Sorghum Crop

Viana¹,

Moreira²,

Miasaki³

et al. 2019

RBMS

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Literary references on the quality of juice of sweet sorghum crop following chemical ripening agents spraying are rarely found up, mostly concerning to the trinexapac-ethyl. Accordingly, this article shares an unpublished content about chemically-induced physiological ripening on the sweet sorghum cv. CMSXS-646 by spraying trinexapac-ethyl before the crop flowering. A CO2-pressurized backpack sprayer, with flat spray nozzles, was employed to exogenously spray the plant growth inhibitor at 0.4, 0.8 and 1.6 l ha-1 on 90-days-old plants. Early after the crop harvesting, juice and lignocellulose samples were technologically assessed to total soluble solids, sucrose, purity, reducing sugars, total reducing sugars, fibers and yield of sugar. Sweet sorghum plants exposured to the trinexapacethyl at 0.4 and 0.8 l ha-1 produced juices with approximately 20.2 and 20.3 °Brix, 15.1 and 13.2% sucrose, 74.6 and 64.9% purity, as well as 107.7 and 98.2 kg t-1 sugar, respectively. Unlike, plants cultivated as control, juices with 21.0 °Brix, 16.0% sucrose, 76.9% purity and 118.0 kg t-1 sugar. Therefore, trinexapac-ethyl had suppressive effect on the quality of juice, mostly regarding to the total soluble solids and yield of sugar. Plants sprayed with trinexapac-ethyl at 1.6 l ha-1 developed the most fibrous stalks, as host-defense system response to stress induced on plant physiology. The conclusion is, therefore, that although does prejudices the quality of juice, making it unsustainable to the production of first-generation ethanol, trinexapac-ethyl as chemical ripening agent could lead the sweet sorghum cv. CMSXS-646, while lignocellulose renewable source, to the industrialization of cellulosic ethanol and bioelectricity.

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Chemical ripeners and different harvest periods in sugarcane in State of Paran, southern Brazil

Cited by 2 publications

References 4 publications

TECHNOLOGICAL PROFILE OF SWEET SORGHUM JUICE cv. CMSXS-646 SUBMITTED TO CHEMICAL RIPENERS APPLICATION AND SAMPLING PERIODS

TECHNOLOGICAL PROFILE OF SWEET SORGHUM JUICE cv. CMSXS-646 SUBMITTED TO CHEMICAL RIPENERS APPLICATION AND SAMPLING PERIODS

Trinexapac-Ethyl as Chemical Ripening Agent on Sweet Sorghum Crop

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