Dotações hídricas em densidades de plantas na cultura da mamoneira cv. BRS Energia

Silva, Servulo M. S. e; Gheyi, Hans Raj; Beltrão, N. E. de M.; Santos, J. W. dos; Soares, Frederico Antônio Loureiro

doi:10.5039/agraria.v4i3a17

Cited by 25 publications

(28 citation statements)

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“…Silva et al (2009) observed for SD, values in the order of 18.0 mm, and Silva (2010) found an average value of 22 mm for SD. For the castor bean cv.…”

Section: Resultsmentioning

confidence: 99%

“…Guarani, influenced by different plant populations, in Bom Jesus, Goiás, and found no significant difference between treatments, obtaining maximum and minimum values of LR of 58 and 50 cm respectively. Silva et al (2009), when studying the effects of irrigation levels on populations of castor bean plants cv. BRS Energia in Barbalha, Ceará, found maximum values for LR of 41 cm.…”

Section: Resultsmentioning

confidence: 99%

“…Unlike the soybean, sunflower, groundnut and other oilseeds, the castor bean is not intended for human consumption, and consequently does not involve competition with that market (SILVA et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Silva¹,

Montenegro²,

Pedrosa³

et al. 2014

Rev. Ciênc. Agron.

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-The influence of different irrigation levels, both with and without mulching, was evaluated for the growth variables of productivity, production components and water use efficiency, in a castor bean crop (Ricinus Comunnis) cv. BRS Energia, in a Fluvic Neossol of the semiarid in the Brazilian state of Pernambuco. The experimental design used was completely randomised in a factorial of 4 (irrigation levels) × 2 (with and without mulch), with four replications. The irrigation levels were based on the evapotranspiration of the crop (ETc), with L1 = 60% ETc, L2 = 80% ETc, L3 = 100% ETc and L4 = 120% ETc. All growth variables showed significant differences to the mulch at 120 days after germination. The number of racemes per plant, percentage of bark, and water use efficiency responded significantly to the presence of mulch on the ground, while length of racemes, fruit yield and berry yield responded significantly to the isolated effects of the irrigation levels and ground cover. Levels L3 and L4 improved the performance of the crop, with an average productivity of over 2,360 kg berries ha RESUMO -Avaliou-se a influência de diferentes lâminas de irrigação na presença e ausência de cobertura morta nas variáveis de crescimento, produtividade, componentes de produção e eficiência do uso da água, da cultura mamoneira (Ricinus Comunnis) cultivar BRS Energia em Neossolo Flúvico no semiárido pernambucano. O delineamento experimental utilizado foi o inteiramente casualizado em esquema fatorial 4 (lâminas de irrigação) × 2 (com e sem cobertura morta) com quatro repetições. As lâminas de irrigação basearam-se na evapotranspiração de cultura (ETc), sendo L1 = 60% ETc; L2 = 80% ETc; L3 = 100% ETc e L4 = 120% ETc. Todas as variáveis de crescimento apresentaram diferença significativa à cobertura morta aos 120 dias após a germinação. O número de racemos por planta, o percentual de casca e a eficiência no uso da água responderam significativamente à presença de cobertura morta no solo; enquanto o comprimento de racemos, a produtividade de frutos e produtividade de bagas responderam significativamente aos efeitos isolados das lâminas e da cobertura do solo. As lâminas L3 e L4 foram as que permitiram melhor desempenho da cultura, com produtividade média acima de 2.360 kg ha -1 de bagas.Palavras-chave: Irrigação. Crescimento. Componentes de produção.

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“…Silva et al (2009) observed for SD, values in the order of 18.0 mm, and Silva (2010) found an average value of 22 mm for SD. For the castor bean cv.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Silva¹,

Montenegro²,

Pedrosa³

et al. 2014

Rev. Ciênc. Agron.

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“…The castor bean cultivar 'BRS Energia' was selected for this experiment because of its vigorous genetic material, fast growth (cycle of 120 to 150 days), short size, semi-dehiscent fruits, mean oil content in the seeds of 48%, and average yield of 1,800 kg ha -1 (SILVA et al, 2009). Plants were cultivated in 100-L drainage lysimeters (height = 50 cm, bottom diameter = 30 cm, and top opening = 33 cm) perforated at the bottom, where two drains (Ø = 4 mm) were installed to allow the removal of excess water.…”

Section: Methodsmentioning

confidence: 99%

Emergence, growth, and flowering of castor beans as a function of the cationic composition of irrigation water

et al. 2016

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The use of saline water in agriculture has contributed to the expansion of irrigated areas, especially in arid and semiarid regions, where water deficits occur during various months of the year. In this context, this study aimed to evaluate the emergence, growth, and flowering of the castor bean cultivar "BRS Energia" as a function of the cationic composition of irrigation water, including water containing single and multiple types of cations. The experiment was carried out in a greenhouse in the municipality of Campina Grande-PB, Brazil using drainage lysimeters filled with a sandy loam Ultisol. The experiment was set in a randomized block design, with four replicates each of six water salinity treatments: Control; Na , totaling 24 experimental plots, each consisting of five plants. Plants in the control treatment were subjected to irrigation using water having low electrical conductivity (ECw = 0.6 dS m -1 ), while the plants receiving other treatments were irrigated using 4.5 dS m -1 water containing different ions. Emergence and growth were more affected by the ECw than by the cationic composition of the irrigation water. The order of the cations in the irrigation water, in terms of negative effects, was Na + > Na + + Ca + > Ca 2+ > NaThe cationic composition of the irrigation water influenced the time interval for inflorescence development and the opening of flower buds of the castor bean cultivar "BRS Energia", and the most pronounced effects were observed in plants irrigated with calcic water. Key words: Ricinus communis L. Water quality. Saline stress. ResumoA utilização de águas salinas na agricultura tem contribuído para a expansão de áreas irrigadas, principalmente em regiões áridas e semiáridas, onde ocorre déficit hídrico durante vários meses do ano. Neste contexto propôs-se, no presente trabalho, avaliar a emergência o crescimento e a floração da mamoneira cv. 'BRS Energia' em função da composição catiônica, isolada ou mista, da água de irrigação. O estudo foi conduzido em lisímetros de drenagem em condições de casa de vegetação, no Argissolo Acinzentado Eutrófico de textura franco-arenosa, no município de Campina Grande, PB. Usou-se o delineamento de blocos ao acaso testando-se seis tratamentos de salinidade da água ( ; a composição catiônica da água de irrigação influenciou o intervalo de tempo para a desenvolvimento da inflorescência e a antese do botão floral da mamoneira cv. 'BRS Energia', sendo os efeitos mais acentuados observados nas plantas irrigadas com águas de composição cálcica. Palavras-chave: Ricinus communis L. Qualidade de água. Estresse salino.

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“…The experiment was set in a randomized block design with six treatments and four replicates, totaling 24 experimental plots, each one with five plants. The castor bean cultivar 'BRS Energia' was used in the experiment, for its strong genetic material, precocity (cycle from 120 to 150 days), short size, semi-indehiscent fruits, average oil content of 48% in the seeds and average yield of 1,800 kg ha -1 (Silva et al, 2009). ]…”

Section: Localization Experimental Procedure Treatments and Plant Mmentioning

confidence: 99%

Morpho-physiology and oil yield of castor bean (Ricinus communis L.) as a function of salinity and the cationic nature of irrigation water

Lima¹,

Gheyi²,

Nobre³

et al. 2016

Aust J Crop Sci

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This study aimed to evaluate the morpho-physiology and oil yield of castor bean (cultivar 'BRS Energia') as a function of irrigation water salinity and cationic nature. The experiment was carried out using an Ultisol of sandy loam texture, in Campina Grande, Paraíba, Brazil. Six combinations of cations and water electrical conductivity (ECw) were studied (S 1 -Control; S 2 -Na + ; S 3 -Ca 2+ ; S 4 -Na + +Ca 2+ ; S 5 -K + and S 6 -Na + +Ca 2+ +Mg 2+ ), in a randomized block design, with four replicates and five plants in each plot. Plants in the control treatment (S 1 ) were irrigated using water of 0.6 dS m -1 , while the other treatments were irrigated using water of 4.5 dS m -1 , prepared using chloride salts of different cations. Gas exchanges, growth and oil yield of castor bean were more affected by ECw variation than by the cationic nature of the water. Among the tested cations, potassium promoted the highest values of gas exchange and growth except in the flowering and fruiting stages. Oil yield is the most sensitive variable to the cationic nature of irrigation water.

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Dotações hídricas em densidades de plantas na cultura da mamoneira cv. BRS Energia

Cited by 25 publications

References 1 publication

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Emergence, growth, and flowering of castor beans as a function of the cationic composition of irrigation water

Morpho-physiology and oil yield of castor bean (Ricinus communis L.) as a function of salinity and the cationic nature of irrigation water

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