Qualidade física e produção do maracujá amarelo em solo com biofertilizante irrigado com águas salinas

Dias, Thiago Jardelino; Cavalcante, Lourival Ferreira; Nunes, Járisson Cavalcante; Freire, José Lucínio de Oliveira; Nascimento, José Adeilson Medeiros

doi:10.5433/1679-0359.2012v33supl1p2905

Cited by 18 publications

(30 citation statements)

References 16 publications

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“…Such restriction caused by salinity can be related to the osmotic effect resulting from salinity, limiting water availability and, consequently, gas exchange, particularly in photosynthesis, as observed in other studies (DIAS et al, 2012;BRITO et al, 2012). In addition, ionic effects might have played a role, since plants had been under irrigation with saline water for 30 days in a relatively small volume of substrate; this corroborates with the findings of Hussain et al (2015), who related low photosynthesis values in citrus leaves to a low detoxification capacity, leading to the accumulation of ions in the cell vacuole.…”

Section: Resultsmentioning

confidence: 76%

“…However, although irrigation can reduce the climatic risk of drought and losses of citrus orchards in the Northeastern region, it must be highlighted that the water used for irrigation, which is usually obtained from wells, has relatively high salt concentrations, which can influence the growth, development and yield of the salt-sensitive citrus plants (MAAS, 1993;MEDEIROS et al, 2003;LEVY;SYVERTSEN, 2004;DIAS et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Gas exchange of citrus rootstocks in response to intensity and duration of saline stress

Barbosa

Brito

Sá

et al. 2017

SCA

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Soil and water salinity cause physiological disorders in sensitive plants, such as altered gas exchange in citrus genotypes. However, it is possible to analyse these effects and to identify genotypes tolerant to salt stress. An experiment was carried out in order to evaluate the tolerance of citrus genotypes considering the irrigation with saline water during rootstock formation. The study took place under greenhouse conditions in Pombal county, Paraiba, Brazil. A randomised block design was used, with treatments arranged in a factorial scheme (5 x 8). The two factors were: [i] five salinity levels of irrigation water (0.8, 1.6, 2.4, 3.2 and 4.0 dS m -1 ) and [ii] eight genotypes of citrus rootstocks: 1. 'Santa Cruz Rangupur' lime (LCRSTC); 2. common 'Sunki' mandarin (TSKC) x 'Swingle' citrumelo (CTSW) -028; 3. TSKC x CTSW -033; 4. TSKC x CTSW -041; 5. 'Volkamer' lemon (LVK) x 'Rangpur' lime (LCR) -038; 6. 'Florida Sunki' mandarin (TSKFL); 7. TSKC and 8. 'Florida' rough lemon (LRF). Gas exchange was evaluated at 15, 30 and 60 days after the beginning of the saline water application. High water salinity reduces gas exchange in citrus genotypes, which was more evident at 15 days from the beginning of stress. The genotypes 'Santa Cruz Rangpur' lime, TSKC x CTSW -041, LVK x LCR -038 and 'Florida' rough lemon exhibit a satisfactory physiological behaviour during the first 30 days of exposure to the stress, showing moderate tolerance to salt stress. The genotypes TSKC x CTSW -033 and common 'Sunki' mandarin are the most sensitive to salinity. Key words: Citrus spp. Poncirus hybrids. Salinity. Assimilation rate. Tolerance. ResumoA salinidade do solo e da água ocasionam distúrbios fisiológicos em plantas sensíveis, a exemplo das trocas gasosas em genótipos de citros, podendo-se identificar, a partir dessas variáveis, genótipos tolerantes e a resposta das plantas à salinidade. Assim, objetivou-se avaliar a tolerância de genótipos de citros à salinidade na fase de formação de porta-enxertos. O experimento foi desenvolvido em casa de vegetação, no Município de Pombal, Paraíba, empregando-se o delineamento experimental de blocos casualizados com três repetições e tratamentos arranjados em esquema fatorial, 5x8, relativos à

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Section: Resultsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Gas exchange of citrus rootstocks in response to intensity and duration of saline stress

Barbosa

Brito

Sá

et al. 2017

SCA

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“…Passion fruit irrigation with saline water has been investigated in several studies (DIAS et al, 2012;FREIRE et al, 2012;VIANA et al, 2012). In general, these studies have shown that salinity reduces the growth of branches and several other growth components, besides compromising some chemical characteristics of the fruits when irrigation is carried out with waters of moderate to high salinity.…”

Section: Introductionmentioning

confidence: 99%

Gas Exchange, Chloroplast Pigments and Growth of Passion Fruit Cultivated With Saline Water and Potassium Fertilization 1

et al. 2020

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The objective of this study was to evaluate the gas exchange, chloroplast pigments and growth of ‘BRS Rubi do Cerrado’ passion fruit as a function of irrigation with saline water and potassium fertilization in the seedling formation stage. The experiment was conducted under greenhouse conditions in the municipality of Pombal-PB, Brazil. A randomized block design was used in 5 x 2 factorial scheme, corresponding to five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and two doses of potassium - KD (50 and 100% of the recommendation), with four replicates and two plants per plot. Water salinity from 0.3 dS m-1 reduced the stomatal opening, transpiration, CO2 assimilation and inhibited the growth of ‘BRS Rubi do Cerrado’ passion fruit plants, at 40 days after sowing. There was no CO2 restriction in the substomatal cavity of passion fruit plants grown under water salinity from 0.3 dS m-1. Potassium dose of 150 mg kg-1 of soil, corresponding to 100%, intensified the effect of salt stress on the assimilation rate and instantaneous carboxylation efficiency in 'BRS Rubi do Cerrado' passion fruit. There was interaction between water salinity levels and potassium doses for the chlorophyll a and b contents of 'BRS Rubi do Cerrado' passion fruit.

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“…, induced by the competition with Na + , or even of NO 3 -due to the high concentration of Cl -in the environment, which damages the functions of the enzymatic systems and impedes protein synthesis (APSE; BLUMWALD, 2007;DIAS et al, 2012b).…”

Section: +mentioning

confidence: 99%

Physiology of ‘Paluma’ guava under irrigation with saline water and nitrogen fertilization

Silva

Nobre

Souza

et al. 2017

SCA

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The use of saline water in irrigation causes osmotic and toxic effects and nutritional imbalance in plants, leading to morphophysiological modifications in the leaves and compromising the production of photosynthetic pigments, which negatively reflects in the growth and development of the crops. Hence, this study aimed to evaluate the effect of irrigation water salinity on the content of photosynthetic pigments and leaf morphophysiology of guava seedlings cv. 'Paluma' under nitrogen (N) fertilization. A randomized block design was used, testing five levels of irrigation water electrical conductivityECw (0.3, 1.1, 1.9, 2.7, and 3.5 dS m -1 ) and four N doses (541.1, 773.0, 1,004.9, and 1,236.8 mg of N dm -3 of soil) in a 5 x 4 factorial scheme with three replicates and five plants per plot. The contents of photosynthetic pigments in the leaves of the guava seedlings cv. 'Paluma' were inhibited by the increase in irrigation water salinity at 190 days after emergence, and the salt stress was lessened with the N dose of 1,004.9 mg dm -3 up to an ECw level of 1.2 dS m -1 . Leaf morphophysiology of guava seedlings was not compromised by irrigation water salinity up to 1.5 dS m -1 , and the highest values were obtained in plants fertilized with 541.1 mg of N dm -3 . Key words: Psidium guajava L. Photosynthesis. Salinity and nitrogen. ResumoO uso de água salina na irrigação promove efeitos osmóticos, tóxicos e desbalanço nutricional nas plantas, causando modificações morfofisiológicas nas folhas e comprometimento na produção dos pigmentos fotossintéticos, refletindo negativamente no crescimento e desenvolvimento das culturas. Nesse sentido, objetivou-se com o presente trabalho avaliar o efeito da salinidade da água de irrigação no teor de pigmentos fotossintéticos e na morfofisiológica foliar de mudas de goiabeira cv. Paluma sob adubação nitrogenada. Usou-se a aleatorização em blocos, testando cinco níveis de condutividade elétrica da água de irrigação -CEa (0,3; 1,1; 1,9; 2,7 e 3,5 dS m

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Qualidade física e produção do maracujá amarelo em solo com biofertilizante irrigado com águas salinas

Cited by 18 publications

References 16 publications

Gas exchange of citrus rootstocks in response to intensity and duration of saline stress

Gas exchange of citrus rootstocks in response to intensity and duration of saline stress

Gas Exchange, Chloroplast Pigments and Growth of Passion Fruit Cultivated With Saline Water and Potassium Fertilization 1

Physiology of ‘Paluma’ guava under irrigation with saline water and nitrogen fertilization

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