Respostas Morfofisiológicas Da Mamoneira, Em Função Da Salinidade Da Água De Irrigação E Adubação Nitrogenada1

Lima, Geovani Soares de; Nobre, Reginaldo Gomes; Gheyi, Hans Raj; Soares, Lauriane Almeida dos Anjos; Silva, Saulo Soares

doi:10.15809/irriga.2014v19n1p130

Cited by 16 publications

(19 citation statements)

References 20 publications

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“…On the other hand, the application of ammonium (NH 4 + ) can contribute to a higher absorption of anions and, in salt-affected soils with high amounts of chlorides, NH 4 + will be absorbed preferentially, causing lower damages to plants. Preliminary results have been observed in experiments with castor bean (SOARES et al, 2013;LIMA et al, 2014) and sunflower (NOBRE et al, 2011;NOBRE et al, 2014).…”

Section: Introductionmentioning

confidence: 86%

Impact of Saline Conditions and Nitrogen Fertilization on Citrus Production and Gas Exchanges

et al. 2016

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-In two simultaneous experiments, we evaluated the impact of brackish irrigation water and nitrogen (N) fertilization on the production of citrus (scion-rootstock combinations) and its associated gas exchanges. These experiments were conducted at the Campus of Federal University of Campina Grande, Brazil in a protected environment (shade screens on the sides) using drainage lysimeters. Experiment I used a randomized block design (3 replicates), in a 5 × 3 factorial arrangement, corresponding to five water salinity levels (0.6, 1.2, 1.8, 2. . For both experiments, gas exchanges and mean mass of fruits were evaluated at harvest. Gas exchanges were inhibited in plants under saline stress. Plants grafted with Common Rangpur lime showed greater production potential than did the other genotypes studied, even under brackish water conditions.

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Section: Introductionmentioning

confidence: 86%

Impact of Saline Conditions and Nitrogen Fertilization on Citrus Production and Gas Exchanges

et al. 2016

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“…Lima et al (2014), studying the influence of irrigation with saline water with NaCl (ECw from 0.3 to 3.9 dS m -1 ), observed a higher EP (75.47%) in castor bean plants that received 0.3 dS m -1 water and a lower EP (23.16%) in plants under 3.9 dS m -1 water. Among the S 2 , S 3 , S 4 , S 5 , and S 6 treatments (Table 4), the EP of plants irrigated with water containing potassium differed significantly (p < 0.05) from those under irrigation with water containing sodium or calcium.…”

Section: Resultsmentioning

confidence: 99%

“…The volume applied was determined based on plant water demand, estimated through the water balance: applied water volume minus water volume drained in the previous irrigation, plus the leaching fraction of 0.10, according to previous studies (NOBRE et al, 2013;LIMA et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Emergence, growth, and flowering of castor beans as a function of the cationic composition of irrigation water Thus, many researchers have observed negative effects of salinity on castor bean plants (CAMPOS et al, 2009;SOARES et al, 2012;ALVES et al, 2012;NOBRE et al, 2013;SANTOS et al, 2013;LIMA et al, 2014); however, these studies are restricted to the effects of different salinity levels, so there is a need for further studies, especially in order to verify the effects of differences in the cationic composition of irrigation water on the castor bean cultivar 'BRS Energia'.…”

Section: +mentioning

confidence: 99%

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

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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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“…Previous studies (CAMPOS et al, 2009;SOARES et al, 2012;NOBRE et al, 2013;SANTOS et al, 2013;LIMA et al, 2014aLIMA et al, , 2014b have shown the effects of irrigation water with high salinity on the cultivation of the castor bean cultivar, 'BRS Energia'. However, they are limited to water with different salinity levels; therefore, further studies are necessary, especially on the castor bean 'BRS Gabriela' cultivar, on the effect of nitrogen (N) levels and saline water, to mitigate the negative effects caused by saline stress.…”

Section: Introductionmentioning

confidence: 99%

Effects of water salinity and nitrogen fertilization on the growth and yield of ‘BRS Gabriela’ castor beans

Santos

Gheyi

Brito

et al. 2016

SCA

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The castor bean has attracted the attention of many farmers as an alternative crop for the National Program of Biofuel and its extensive use in the ricinochemical industry. The crop requires large planting areas to meet the demands of the fuel market. The aim of the present study was to evaluate the effects of irrigation water salinity and nitrogen fertilization on the growth and production of castor beans, 'BRS Gabriela', in a protected environment. The present study was conducted at the Center of Technology and Natural Resources of the Federal University of Campina Grande. The experimental design was completely randomized in a 5 × 4 factorial with three replications and one plant per plot. The treatments consisted of irrigation water with five electrical conductivity (ECw) levels of 0.7, 1.7, 2.7, 3.7, and 4.7 dS m -1 associated with four nitrogen levels of 60, 80, 100, and 120 mg of N kg -1 of soil. The interaction between water salinity and nitrogen rates did not exert significant effects on the variables studied. Increased salinity of irrigation water affected the growth in height and stem diameter of castor beans in all periods, and leaf area from 90 days after sowing. Increased nitrogen levels had a positive effect on leaf area at 60, 90, 120, and 150 days after sowing. The total mass of seeds, one hundred seed mass, yield, and number of fruits per plant decreased with the increase in water salinity, and the total mass of seeds was the most affected variable. Key words: Ricinus communis L. Water salinity. Nitrogen. ResumoA mamoneira tem despertado atenção de muitos agricultores por ser mais uma alternativa para o Programa Nacional de Biocombustível e também por sua ampla utilização na indústria ricinoquímica, neste contexto a cultura exigirá grandes áreas de plantio para atender a demanda do mercado de combustíveis. Este estudo teve o objetivo de avaliar, em ambiente protegido, os efeitos da salinidade da água de irrigação e adubação nitrogenada sobre o crescimento e a produção da mamoneira, cultivar BRS Gabriela. O trabalho foi conduzido no Centro de Tecnologia e Recursos Naturais da Universidade Federal de Campina Grande. O delineamento estatístico foi inteiramente casualizado, em esquema fatorial 5 x 4, com três repetições e uma planta por parcela. Os tratamentos foram constituídos por cinco níveis de condutividades elétricas da água de irrigação (CEa), 0,7; 1,7; 2,7; 3,7 e 4,7 dS m -1 associados a quatro doses de nitrogênio 60, 80, 100 e 120 mg de N kg -1 de solo. A interação entre salinidade das águas e doses de nitrogênio não exerceu efeitos significativos sobre as variáveis estudadas. O aumento da salinidade da água de irrigação prejudicou o crescimento em altura e o diâmetro de caule da mamoneira em todas as épocas avaliadas e a área foliar a partir dos 90 dias após a semeadura. O incremento das doses de nitrogênio exerceu efeito positivo sobre área foliar aos 60, 90, 120 e 150 dias após a semeadura. A massa total e de cem sementes, rendimento em sementes e número de frutos planta -1 dimi...

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Respostas Morfofisiológicas Da Mamoneira, Em Função Da Salinidade Da Água De Irrigação E Adubação Nitrogenada1

Cited by 16 publications

References 20 publications

Impact of Saline Conditions and Nitrogen Fertilization on Citrus Production and Gas Exchanges

Impact of Saline Conditions and Nitrogen Fertilization on Citrus Production and Gas Exchanges

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

Effects of water salinity and nitrogen fertilization on the growth and yield of ‘BRS Gabriela’ castor beans

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