Respostas fisiológicas de cultivares de soja à adubação potássica sob diferentes regimes hídricos

Catuchi, Tiago Aranda; Guidorizzi, Fernando Vieira Costa; Guidorizi, Kezia Aparecida; Barbosa, Alexandrius de Moraes; Souza, Gustavo Maia

doi:10.1590/s0100-204x2012000400007

Cited by 53 publications

(47 citation statements)

References 23 publications

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“…Thus, it can be claimed that the mineral fertilization released nutrients satisfactorily, conditioning plants with increased vigor and, consequently, higher growth and gas exchanges. This is confirmed by Catuchi et al (2012), who studied the physiological responses of soybean plants under potassium fertilization and water regimes, and observed an increment in stomatal conductance with the increase in the potassium dose. In addition, the improvement in the availability of nutrients contributes to the gas exchanges and growth of the plants (SEDIYAMA et al, 2014;SANTOS et al, 2014;SÁ et al, 2016).…”

Section: Resultssupporting

confidence: 55%

Growth, gas exchanges and production of beet CV. katrina under organo-mineral fertilization

Neto¹,

Gondim²,

Sá³

et al. 2017

Biosci. J.

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ABSTRACT:The beet culture has great economic and food importance in the world, especially with respect to energy generation. In Brazil the culture is still little studied, lacking studies in all stages of production of culture, mainly in the management of fertilization. This study aimed to evaluate the effect of organo-mineral fertilization on growth, gas exchanges and production of beet, cv. Katrina. The experiment was conducted under field conditions in the municipality of Pombal-PB, Brazil, from September to December 2015, in a randomized block design. The treatments were arranged in a 4 x 2 factorial scheme and corresponded to four periods of fermentation of the biofertilizer (10, 20, 30 and 40 days) applied in soils with and without mineral fertilization, with four replicates and 18 plants evaluated per plot. Plants were conducted for 70 days after transplanting, in 15-cm-high, 1-m-wide beds. During this period, plant growth, gas exchanges and production components were evaluated. The application of mineral biofertilizer fermented for 20 to 30 days, associated with mineral fertilization with 36 g m -2 of P 2 O 5 , 18.0 g m -2 of K 2 O and 14 g m -2 of N at planting, promoted better performance of growth, gas exchanges and production of beet plants. In the soil without mineral fertilization, it is recommended to use the longest biofertilizer fermentation periods, 30 to 40 days, for beet cultivation.

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Section: Resultssupporting

confidence: 55%

Growth, gas exchanges and production of beet CV. katrina under organo-mineral fertilization

Neto¹,

Gondim²,

Sá³

et al. 2017

Biosci. J.

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“…Brevedan & Egli (2003) applied a severe soil-moisture regime for 13 days to soybean crop, in the pod filling stage, and reported 39% losses of grain yield; however, those authors used only one soybean cultivar (Elgin 87). Catuchi et al (2012) reported greater grain yield losses of soybean subjected to severe levels of soil moisture, for a total of 25 days, from flowering to the beginning of pod filling stage. In the present study, plants were subjected to different water regimes for 13 days (beginning of flowering to the beginning of pod set), which allowed of a sufficient time (55 days) for plants to recover until maturation.…”

Section: Resultsmentioning

confidence: 96%

“…The abiotic stress caused by water deficiency reduces soybean development and yield, caused by diminishing of leaf area (Sincik et al, 2008), and changings on photosynthesis (Fenta et al, 2012), and gas exchange characteristics (Liu et al 2005;Bertolli et al, 2012;Catuchi et al, 2012;Li et al, 2013;Madhu & Hatfield, 2014).…”

Section: Introductionmentioning

confidence: 99%

Physiologic parameters of soybean of determinate and indeterminate growth habit subjected to levels of soil moisture

Júnior

Silva

Sanches

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the physiological and production parameters of soybean (Glycine max) cultivars of determinate and indeterminate growth habits, in three levels of soil moisture. Three cultivars of determinate growth habit and three of indeterminate growth, at the beginning of the reproductive stage, were subjected to three levels of soil moisture: control, moisture at field capacity; moderated, 50% of the control level; and severe, 25% of the control level. Leaf gas exchange, xylem-water potential, chlorophyll content, chlorophyll a fluorescence, plant dry matter, and grain yield per plant were evaluated. The cultivars of indeterminate growth habit showed the greatest values for stomatal conductance and CO 2 assimilation at the severe treatment, which led to the higher water consumption, in the morning, and to the lower xylem water potential, in the afternoon; however, there was no gain of soybean dry matter. In both growth types, the intensity and duration of the severe level of soil moisture were not able to change the chlorophyll fluorescence. Soybean cultivars of both growth habits, subjected to severe levels of soil moisture from flowering to pod insertion, show no significant change for dry matter and grain yield.

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“…The soil moisture was monitored through daily pot weighing and watering, following a previously described procedure (CATUCHI et al, 2012). Soil moisture was maintained at approximately 20% of SWRC, where it has a negative effect on sugarcane growth and physiology but does not cause plant death.…”

Section: How the Components Of Bioenergy And… Como Componentes De La mentioning

confidence: 99%

How the components of bioenergy and technological traits are affected by water deficit in sugarcane?

Marques

Vasconcelos

Barbosa

et al. 2014

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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To study the effect of water stress on the production of bioenergy and on the biometric and technological parameters that comprise bioenergy in sugarcane, two treatments were tested: 100% replacement of evapotranspiration and 20% of evapotranspiration, with 10 replicates, using a total of 20 plots, and in a completely randomized design. Biometric, technological and calorimetric analyses were done. Under water stress there was a reduction of biomass and for all the analyzed components (TRS, Pol, Brix and Fiber). The total bioenergy of the system was reduced in the same proportion as the biomass, presenting changes in its composition. The simple sugars (glucose and fructose) showed minor reduction than other components of bionergy.Keywords: Saccharum spp.; Water, Energy; Biomass and Carbohydrate partitioning Como componentes de la bioenergía y tecnología de la caña de azúcar se ven afectados por el déficit hídrico? ResumenPara estudiar los efectos del déficit de agua en la producción de bioenergía y biométrica y parámetros tecnológicos de la caña de azúcar se ha estudiado dos tratamientos: 100% de reemplazo de la evapotranspiración (control) y 20% de sustitución de la evapotranspiración (déficit hídrico) con 10 repeticiones para cada tratamiento. Se realizaron y evaluaron análisis biométricos, tecnológicos y calorimétricos. Bajo déficit hídrico las plantas de caña de azúcar redujeran la biomasa y los componentes (ATR, Pol, Brix y fibra). El bioenergía total del sistema se redujo en proporción a la biomasa, con cambios en su composición. Ya los azúcares simples (glucosa y fructosa) tuvieron reducción menor que los componentes bioenergéticos.Palabras clave: Saccharum spp; agua; energía; biomasa y partición de los hidratos de carbonoComo os componentes bioenergéticos e tecnológicos da cana-de-açúcar são afetados pelo deficit hídrico? ResumoPara estudar os efeitos do deficit hídrico na produção de bioenergia e nos parâmetros biométricos e tecnológicos da cana-de-açúcar, foi estudado dois tratamentos: 100% da reposição da evapotranspiração (controle) e 20% de reposição da evapotranspiraçao (deficit hídrico), com 10 repetições para cada tratamento. Foram realizadas e avaliadas análises biométricas, tecnológicas e calorimétrica. Sob deficit hídrico as plantas de cana-de-açúcar tiveram redução na biomassa e nos components avaliados (ATR, Pol, Brix e Fibra). A bioenergia total do sistema foi reduzida na mesma proporção da biomassa, apresentando mudanças em sua composição. Já os açúcares simples (glucose e fructose) tiveram menor redução do que os componentes bioenergéticos.Palavras chave: Saccharum spp.; Água, Energia; Biomassa e partição de carboidratosApplied Research & Agrotecnology v7 n2 may/sep. (2014)

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Respostas fisiológicas de cultivares de soja à adubação potássica sob diferentes regimes hídricos

Cited by 53 publications

References 23 publications

Growth, gas exchanges and production of beet CV. katrina under organo-mineral fertilization

Growth, gas exchanges and production of beet CV. katrina under organo-mineral fertilization

Physiologic parameters of soybean of determinate and indeterminate growth habit subjected to levels of soil moisture

How the components of bioenergy and technological traits are affected by water deficit in sugarcane?

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