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| Silva,André A. R. da; Lima,Geovani S. de; Azevedo,Carlos A. V. de; Soares,Lauriane A. dos A.; Gheyi,Hans R.; Oliveira,Raucha C. de. |
| ABSTRACT The objective of this study was to evaluate growth, flowering and production components of the cotton cv. ‘BRS Topázio’ irrigated with water of different salinity levels and potassium (K) doses in the soil. The research was conducted in a greenhouse. The experiment was set in a randomized complete block design with four replicates, in 4 x 4 factorial arrangement with 4 levels of irrigation water salinity (1.5, 3.0, 4.5 and 6.0 dS m-1) and four K doses (50, 75, 100 and 125% of the recommendation); the dose of 100% corresponded to 150 mg K2O kg-1 of soil. Irrigation water salinity reduced stem diameter, plant height, number of leaves and leaf area of the cotton cv. ‘BRS Topázio’. Leaf area at 53 DAS was the most affected variable. The highest K dose... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; ‘BRS Topázio’; Salt stress; Potassium. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900628 |
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| Silva,André A. R. da; Lima,Geovani S. de; Azevedo,Carlos A. V. de; Veloso,Luana L. de S. A.; Gheyi,Hans R.; Soares,Lauriane A. dos A.. |
| ABSTRACT This study aimed to evaluate the gas exchanges and photosynthetic pigments of soursop seedlings cv. ‘Morada Nova’ irrigated with saline waters and subjected to exogenous application of hydrogen peroxide by seed soaking and foliar spraying. The study was carried out using plastic bags under greenhouse conditions at the Center of Technology and Natural Resources of the Federal University of Campina Grande, PB, Brazil, using a eutrophic Regolithic Neosol of sandy loam texture. Treatments were arranged in a randomized block design, in 5 x 5 factorial scheme, which consisted of five levels of electrical conductivity – ECw (0.7; 1.4; 2.1; 2.8 and 3.5 dS m-1) of irrigation water and five concentrations of hydrogen peroxide - H2O2 (0, 25, 50, 75 and 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona muricata L.; Saline waters; Physiology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400257 |
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| Andrade,Elysson M. G.; Lima,Geovani S. de; Lima,Vera L. A. de; Silva,Saulo S. da; Gheyi,Hans R.; Silva,André A. R. da. |
| ABSTRACT The study was carried out to evaluate the photosynthetic efficiency and growth of yellow passion fruit, cultivated under different levels of irrigation water salinity and exogenous application of hydrogen peroxide. The experiment was carried out in greenhouse of the Universidade Federal de Campina Grande, PB, Brazil, using drainage lysimeters with capacity for 100 dm3, filled with Entisol of sandy texture. The experimental design was randomized blocks using a 4 x 4 factorial scheme, with three repetitions, corresponding to four water salinity (0.7; 1.4; 2.1 and 2.8 dS m-1) and four concentrations of hydrogen peroxide (0, 20, 40 and 60 µM). The different concentrations of hydrogen peroxide were applied by soaking the seed for a period of 24 h and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passiflora edulis; Antioxidant enzyme; Salinity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001200945 |
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| Silva,André A. R. da; Veloso,Luana L. de S. A.; Nascimento,Ronaldo do; Nascimento,Elka C. S.; Bezerra,Carlos V. de C.; Pereira,Márcia C. de A.. |
| ABSTRACT Indication of salt-tolerant cotton cultivars can make the agricultural exploitation with saline water irrigation feasible in the Brazilian semi-arid region. Thus, this study aimed to evaluate the gas exchanges and growth of cotton cultivars irrigated with saline water. The study was conducted in pots adapted as drainage lysimeters under greenhouse conditions, using a sandy loam Entisols as substrate. Treatments were distributed in completely randomized design, in 5 x 2 factorial arrangement, relative to five levels of irrigation water electrical conductivity - ECw (1.5, 3.0, 4.5, 6.0 and 7.5 dS m-1) and two cotton cultivars (BRS 368 RF and BRS Safira). Increase in irrigation water salinity inhibits the vegetative growth and gas exchanges of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Tolerance; Cultivar BRS Safira. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600393 |
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