Free proline accumulation in sugarcane under water restriction and spittlebug infestation

Guimarães, Eduardo Rossini; Mutton, Miguel Ângelo; Mutton, Márcia Justino Rossini; Ferro, Maria Inês Tiraboschi; Ravaneli, Gisele Cristina; Silva, Jorge Alberto da

doi:10.1590/s0103-90162008000600009

Cited by 38 publications

(23 citation statements)

References 11 publications

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“…In situations of water restriction, common physiological alterations include reduced leaf water potential and the relative water content (Nogueira et al 2000, Graça et al 2010, gas exchange, photosynthesis, as well as reduced maximum quantum efficiency of the photosystem II (Inman-Bamber and Smith 2005, Silva et al 2007, Jaleel et al 2009, Gonçalves et al 2010, Graça et al 2010. As a consequence, metabolic changes such as increase in osmoregulators (Nogueira et al 2001, Guimarães et al 2008, Silva et al 2009, Medeiros et al 2012) may occur along with significant alterations on the plant growth, in response to the lower turgor pressure in the cells (Hessini et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Physiological limitations in two sugarcane varieties under water suppression and after recovering

Medeiros¹,

Silva²,

Nogueira³

et al. 2013

Theor. Exp. Plant Physiol.

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Increasing water scarcity and depleted water productivity in irrigated soils are inducing farmers to adopt improved varieties, such as those with high-capacity tolerance. The use of tolerant varieties of sugarcane might substantially avoid the decline of productivity under water deficit. This research aimed to evaluate the harmful effects of drought on the physiology of two sugarcane varieties (RB867515 and RB962962) during the initial development. Young plants were subjected to irrigation suspension until total stomata closure, and then rewatered. Significant reduction on stomatal conductance, transpiration, and net photosynthesis were observed. RB867515 showed a faster stomatal closure while RB962962 slowed the effects of drought on the gas exchanges parameters with a faster recovering after rewatering. Accumulation of carbohydrates, amino acids, proline, and protein in the leaves and roots of the stressed plants occurred in both varieties, substantially linked to reduction of the leaf water potential. Due to the severity of stress, this accumulation was not enough to maintain the cell turgor pressure, so relative water content was diminished. Water stress affected the contents of chlorophyll (a, b, and total) in both varieties, but not the levels of carotenoids. There was a significant reduction in dry matter

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Section: Introductionmentioning

confidence: 99%

Physiological limitations in two sugarcane varieties under water suppression and after recovering

Medeiros¹,

Silva²,

Nogueira³

et al. 2013

Theor. Exp. Plant Physiol.

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“…Considerando apenas aspectos agronômicos, existem grandes modificações que são conseqüências da manutenção das coberturas mortas sobre o solo, tais como: aumento e estabilização da umidade, elevação dos teores de matéria orgânica, alterações na fertilidade e temperatura, maior eficácia no controle da erosão, interferência sobre a incidência de luz na superfície do solo, mudança da flora infestante e maior dificuldade para a aplicação de herbicidas que, em alguns casos, pode ser reduzida (VIDAL;THEISEN, 1999;SILVA et al, 2003;CHRISTOFFOLETI et al, 2007;CAVENAGHI et al, 2007;GUIMARÃES et al, 2008).…”

Section: Introductionunclassified

“…Estes insetos são beneficiados pela maior manutenção de umidade junto ao solo, em decorrência do microclima criado pela palhada (RAVANELI et al, 2006;GUIMARÃES et al, 2008).…”

Section: Introductionunclassified

Sistemas de manejo da palhada influenciam acúmulo de biomassa e produtividade da cana-de-açúcar (var. RB855453)

Campos¹,

Carvalho

Christoffoleti³

et al. 2010

Acta Sci. Agron.

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RESUMO.A manutenção da palha de cana-de-açúcar sobre a superfície do solo, após colheita sem queima, pode prejudicar a brotação, o perfilhamento e a produtividade da cultura, principalmente em regiões mais frias, além de contribuir para maiores níveis de infestação por cigarrinhas (Mahanarva fimbriolata). Assim sendo, este trabalho foi desenvolvido com o objetivo de avaliar o perfilhamento, o acúmulo de biomassa fresca e a produtividade da soqueira de cana-deaçúcar (var. RB855453), bem como a taxa de infestação por cigarrinhas, quando a cultura foi submetida a três sistemas de manejo da palhada: (i.) palha em área total; (ii.) linha descoberta; e (iii.) aleiramento. Em virtude do rigor experimental do teste de Tukey e da representatividade de cada parcela (2.700 m²), concluiu-se que a manutenção da palha de cana-de-açúcar em área total sobre o solo, após colheita sem queima, prejudicou o desenvolvimento da soqueira, que apresentou menor produtividade e biomassa de perfilhos. O aleiramento da palha, embora não tenha contribuído para a variável número de perfilhos, proporcionou maior biomassa de colmos e produtividade, sem diferença para o manejo de linhas descobertas. Identificou-se menor infestação por cigarrinhas no tratamento com linhas descobertas, contudo o nível de controle não foi atingido, de forma que os danos entomológicos não devem ter contribuído para o menor rendimento da cultura quando sob palhada em área total.Palavras-chave: crescimento, soqueira, perfilhamento, cigarrinha. ABSTRACT. Straw management systems influence biomass accumulation and yield of sugarcane crop (var. RB855453).Maintaining sugarcane straw over the soil surface after harvest without burning may damage sugarcane sprouting, tillering and crop yield, mainly in cold climate sites, in addition to contributing to higher levels of spittlebug (Mahanarva fimbriolata) infestations. Therefore, this work was developed with the objective of evaluating the tillering, fresh biomass accumulation and yield of sugarcane ratoon (var. RB855453), as well as the infestation level of M. fimbriolata, when the crop was submitted to three different straw management systems: (i.) straw in total area; (ii.) uncovered rows and (iii.) accumulating the straw of three rows in one interrow. As a result of experimental rigor provided by the Tukey test and the size and representativeness of each plot (2700 m²), it was possible to conclude that keeping sugarcane straw over the soil in total area, after harvest without burning, reduced ratoon development, presenting lower yield and tiller biomass. Straw accumulation of three rows in one interrow did not contribute to the number of tillers; however, it promoted higher biomass of tillers and consequently higher yield, without difference for the management of uncovered rows. Lower infestations of M. fimbriolata were identified in the treatment with uncovered rows; however, the control level was not reached and thus, the entomological damages must not have contributed to the lower crop yield under straw in total area.

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“…The main changes caused by straw on the soil surface are the following: greater efficiency in the control of erosion and increase of the organic matter content, macro and microfauna, improving the soil structure, alteration in the incidence of light on the surface; increased infiltration of water into the soil; decrease in thermal amplitude and evaporation, especially in the superficial layers (INMAN-BAMBER;SMITH, 2004;GARCIA et al, 2007;CHRISTOFFOLETI et al, 2007;CAVENAGHI et al, 2007;GUIMARÃES et al, 2008;TAVARES et al, 2010;COSTA et al, 2014;PAREDES JUNIOR et al, 2015;VALIM et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Development and production of sugarcane under different levels straw after four years of cultivation

Aquino

Medina

Cunha

et al. 2017

SCA

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Environmental constraints, labour shortages and the search for greater efficiency have induced the mechanisation of sugarcane harvesting, providing a large amount of straw in the system, which provides benefits to the soil, the crop and the environment. The objective of this work was to evaluate the effect of the removal of different amounts of straw from the soil surface on the development and productivity of sugarcane in eutrophic Red Latosol. The experiment was conducted in an area belonging to the Usina in Bandeirantes, PR, using a randomised block design with four replications. The effects of six treatments (0, 25%, 50%, 75%, 100% of straw and sugarcane) were evaluated after four years of cultivation on the LAI (leaf area index), tillering, diameter, length and fresh mass of the stalks, in five periods: 60, 120, 180, 240 and 370 days after harvest (DAC). The results were submitted to analysis of variance and the means compared by Tukey's test. The straw on the soil surface provided benefits to the development and productivity of sugarcane. The management of sugarcane burning, total removal of the straw (0% of soil cover) or 75% of straw resulted in a lower IAF and stalk diameter and a 37% decrease in final yield under conditions of water deficiency. The maintenance of 50% of straw is sufficient to favour the development and to provide greater productivity of the sugarcane, as it is possible to use the 50% surplus of the field for the production of ethanol of second generation or electric energy, without damage to the productivity of the culture. Key words: Straw sugarcane. Ground cover. Biometry. Biomass. ResumoAs restrições ambientais, a falta de mão-de-obra e a busca por maior eficiência induzem a mecanização da colheita de cana-de-açúcar, disponibilizando grande quantidade de palhada no sistema, que proporciona benefícios ao solo, à cultura e ao meio ambiente. O objetivo desse trabalho foi avaliar o efeito da retirada de diferentes quantidades de palhada da superfície do solo sobre o desenvolvimento e a produtividade da cana-de-açúcar em Latossolo Vermelho eutroférrico. O experimento foi instalado em área pertencente a Usina em Bandeirantes, PR, utilizando delineamento em blocos casualizados com quatro repetições. Foram avaliados os efeitos de seis tratamentos (0, 25%, 50%, 75%, 100% de palhada e cana-queimada), após quatro anos de cultivo, sobre o IAF (Índice de área foliar), perfilhamento, diâmetro, comprimento médio e massa fresca dos colmos, em cinco períodos: 60, 120, 180, 240 e 370 dias após a colheita (DAC). Os resultados foram submetidos à análise de variância e as médias comparadas pelo teste Tukey. A palhada sobre a superfície do solo proporcionou benefícios ao desenvolvimento e a produtividade da cana-de-açúcar. Os manejos queima da cana-de-açúcar, retirada total da palhada (0% de cobertura do solo) ou de 75% de palhada resultaram em menor índice de área foliar, diâmetro de colmos e diminuição de 37% na produtividade final, em condições de deficiência hídrica. A manutenção de 50% de p...

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Free proline accumulation in sugarcane under water restriction and spittlebug infestation

Cited by 38 publications

References 11 publications

Physiological limitations in two sugarcane varieties under water suppression and after recovering

Physiological limitations in two sugarcane varieties under water suppression and after recovering

Sistemas de manejo da palhada influenciam acúmulo de biomassa e produtividade da cana-de-açúcar (var. RB855453)

Development and production of sugarcane under different levels straw after four years of cultivation

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