scholarly journals Physiological indices of West Indian cherry (Malpighia emarginata) irrigated with saline water under nitrogen and phosphorus doses

2019 ◽  
pp. 1141-1148
Author(s):  
Francisco Vanies da Silva Sá ◽  
Hans Raj Gheyi ◽  
Geovani Soares de Lima ◽  
Romulo Carantino Lucena Moreira ◽  
Adaan Sudário Dias ◽  
...  
Keyword(s):  
Saline Water ◽  
Block Design ◽  
Membrane Damage ◽  
West Indian ◽  
N Fertilization ◽  
Phosphorus Fertilization ◽  
Saline Stress ◽  
Nitrogen And Phosphorus ◽  
Relative Growth ◽  
Randomized Block Design

The objective of this study was to evaluate the interaction of nitrogen and phosphorus fertilization and irrigation with saline water on the absolute and relative growth of West Indian cherry plant in vegetative phase. The research was carried out in protected environment, using lysimeters filled with clay loam Regolithic Neosol, with low P content. The experiment was set up in randomized block design arranged in a factorial scheme with five levels of irrigation water electrical conductivity (0.6; 1.4; 2.2; 3.0 and 3.8 dS m-1) and four managements of P and N fertilization – P/N (100:100; 140:100; 100:140 and 140:140% P/N) with three replicates and one plant per plot. Seedlings of West Indian cherry, cultivars BRS 366-Jaburu, was cleft-grafted on a local rootstock cultivar, from the Seed Garden of EMBRAPA Tropical Agroindustry. The plants were evaluated for absolute and relative growth of the rootstock and graft. The results showed that 40% increase in nitrogen and/or phosphorus supply can increase growth, chlorophyll content and reduced salt stress damage due to saline water in plants up to ECw = 3.0 dS m-1. The combined increase in nitrogen and phosphorus doses, 140:140% P/N, reduced the deleterious effects of saline stress on growth, chloroplastin pigments and membrane damage of the leaf cells of the West Indian cherry plants.

scholarly journals Water Relations and Gas Exchanges of West Indian Cherry under Salt Stress and Nitrogen and Phosphorus Doses

2017 ◽  
Vol 9 (10) ◽  
pp. 168 ◽  
Author(s):  
Francisco V. da S. Sá ◽  
Hans R. Gheyi ◽  
Geovani S. de Lima ◽  
Emanoela P. de Paiva ◽  
Pedro D. Fernandes ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Water Relations ◽  
Irrigation Water ◽  
Chlorophyll A Fluorescence ◽  
Saline Water ◽  
Block Design ◽  
West Indian ◽  
N Fertilization ◽  
Nitrogen And Phosphorus ◽  
Gas Exchanges

This study aimed to evaluate the interaction between the fertilization with nitrogen (N) and phosphorus (P) and irrigation with saline water on the water relations, gas exchanges and chlorophyll a fluorescence in West Indian cherry in the vegetative stage. The study was carried out in protected environment, using lysimeters filled with clay loam Regolithic Neosol, with low P content, installed in a randomized block design, arranged in a factorial scheme with five levels of electrical conductivity of irrigation water (ECw), and four managements of P and N fertilization, with three replicates and one plant per plot. Along the experiment, water relations, gas exchanges and chlorophyll a fluorescence were evaluated in West Indian cherry plants. The increase in irrigation water salinity reduces the gas exchanges of the plants, but the increment of 40% in N supply increases the photosynthetic activity of West Indian cherry at recommendation levels higher than 100:100% of the P/N ratio, when irrigated with ECw of up to 3.0 dS m-1. The combined action of N and P, at doses of 140:140% N/P recommendation, increases leaf turgor in the plants, regardless of the ECw level. The increment of 40% in N dose reduces the effects of salinity on the initial fluorescence of chlorophyll a in West Indian cherry irrigated with up to 2.2 dS m-1.

scholarly journals Plant development, gas exchanges and pigments of Mesosphaerum suaveolens submitted to osmoconditioning and saline stress

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
Francisco Romário Andrade Figueiredo ◽  
Jackson Silva Nóbrega ◽  
Reynaldo Teodoro de Fátima ◽  
Toshik Iarley da Silva ◽  
Rodrigo Garcia da Silva Nascimento ◽  
...  
Keyword(s):  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Statistical Design ◽  
Saline Stress ◽  
Negative Effects ◽  
Gas Exchanges ◽  
Chlorophyll Pigments ◽  
Randomized Block Design ◽  
Dry Biomass

Salinity is one of the main plant abiotic stresses which affects the establishment and development crops. Hence, the search for technologies that minimize the damage caused by salinity is essential. The aim of the present work was to evaluate the effect of salinity stress and osmotic conditioning of seeds on the biomass, gas exchanges and chlorophyll pigments in Mesosphaerum suaveolens (L.) Kuntze. The statistical design adopted was a randomized block design, combined according to the Central Composite Design, referring to electrical conductivities of irrigation water and osmotic potentials, with minimum (- α) and maximum (α) values of 0.5 and 10.0 dS m-1 and 0.0 and -1.0 MPa, respectively, totaling nine combinations. The characteristics of dry biomass, gas exchange and chlorophyll indices were evaluated at 45 days after irrigation with saline water started. The salinity of irrigation water severely affected the dry biomass and the gas exchanges of M. suaveolens. Irrigation water of electrical conductivity above 3.2 dS m-1 caused reductions in chlorophyll a, b and total contents in M. suaveolens plants. Seed osmoconditioning did not attenuate the negative effects of saline stress on M. suaveolens plants.

scholarly journals Morphophysiology of guava under saline water irrigation and nitrogen fertilization

2018 ◽  
Vol 22 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Idelfonso L. Bezerra ◽  
Reginaldo G. Nobre ◽  
Hans R. Gheyi ◽  
Leandro de P. Souza ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
N Fertilization ◽  
Water Salinity ◽  
Randomized Block Design ◽  
Irrigation Water Salinity ◽  
N Dose ◽  
Number Of Leaves

ABSTRACT The aim of this study was to evaluate the growth of grafted guava cv. ‘Paluma’ subjected to different concentrations of salts in irrigation water and nitrogen (N) fertilization. The plants were transplanted to 150 L lysimeters and under field conditions at the Science and Agri-food Technology Center of the Federal University of Campina Grande, in the municipality of Pombal - PB. The experiment was conducted in randomized block design in a 5 x 4 factorial scheme, with three replicates, and the treatments corresponded to five levels of electrical conductivity of irrigation water - ECw (0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the crop). The doses equivalent to 100% corresponded to 541.1 mg of N dm-3 of soil. Irrigation water salinity above 0.3 dS m-1 negatively affects the number of leaves, leaf area, stem diameter, dry phytomass of leaves, branches and shoots . A significant interaction between irrigation water salinity and N fertilization was observed only for the number of leaves and leaf area at 120 days after transplanting. N dose above 70% of the recommendation (378.7 mg N dm-3 soil) did not mitigate the deleterious effects caused by salt stress on plant growth.

scholarly journals DANO NA MEMBRANA CELULAR E PIGMENTOS CLOROFILIANOS DE CITROS SOB ÁGUAS SALINAS E ADUBAÇÃO NITROGENADA

Irriga ◽  
2017 ◽  
Vol 22 (2) ◽  
pp. 353-368 ◽  
Author(s):  
Jônatas Raulino Marques de Sousa ◽  
Hans Raj Gheyi ◽  
Marcos Eric Barbosa Brito ◽  
Francisco De Assis França Dantas Da Silva ◽  
Geovani Soares De Lima
Keyword(s):  
Cell Membrane ◽  
Nitrogen Fertilization ◽  
Electrolyte Leakage ◽  
Saline Water ◽  
Block Design ◽  
Membrane Damage ◽  
Cellular Damage ◽  
Saline Stress ◽  
Cell Membrane Damage ◽  
Citrus Spp

DANO NA MEMBRANA CELULAR E PIGMENTOS CLOROFILIANOS DE CITROS SOB ÁGUAS SALINAS E ADUBAÇÃO NITROGENADA  JÔNATAS RAULINO MARQUES DE SOUSA1; HANS RAJ GHEYI2; MARCOS ERIC BARBOSA BRITO3; FRANCISCO DE ASSIS FRANÇA DANTAS DA SILVA4 E GEOVANI SOARES DE LIMA5 1 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 - Universitário, Campina Grande, PB, [email protected];2 Núcleo de Engenharia de Água e Solo, Universidade Federal do Recôncavo da Bahia, UFRB, Rua Rui Barbosa, 710 - Centro, Cruz das Almas, BA. [email protected];3 Centro de Ciências Agrárias do Sertão, Universidade Federal de Sergipe, UFS, Rodovia Engenheiro Jorge Neto km 3 - Silos, Nossa Senhora da Glória, SE, [email protected] Centro de Ciências Agrárias, Universidade Federal da Paraíba, UFPB, Rodovia BR 079 Km 12, Areia, PB, [email protected] Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 – Universitário, Campina Grande, PB, [email protected].  1 RESUMO Objetivou-se, com este trabalho, avaliar o dano à membrana celular e os teores de clorofila de combinações copa-porta-enxerto de citros em função da irrigação com águas de diferentes salinidades e adubação nitrogenada. Para tanto, realizou-se dois experimentos concomitantes, usando-se lisímetros de drenagem. No Experimento I estudou-se em blocos casualizados com três repetições um esquema fatorial (5x3), cinco níveis de salinidade da água (CEa) (0,6; 1,2; 1,8; 2,4 e 3,0 dS m-1), e três combinações de copa/porta-enxerto (PE1–TSKC x TRENG–256; PE2 – LCRC e PE3 – TSKC x LCRC x P. trifoliata (TR)–059) tendo laranjeira ‘Mimo do céu’ como copa. No Experimento II estudou-se a aplicação da dose de 200% de nitrogênio recomendada em plantas irrigadas com águas de CEa de 3,0 dS m-1, sendo os resultados comparados aos obtidos nas plantas irrigadas com água de 3,0 dS m-1 sob adubação nitrogenada a 100% da recomendação do Experimento I, formando um fatorial (3x2), correspondentes a três combinações copa/porta-enxerto e duas doses de nitrogênio, com três repetições cada. As plantas enxertadas no limoeiro Cravo ‘Comum’ possuem as melhores médias para o teor relativo de água e para o extravasamento de eletrólitos, porém, com base nessas variáveis, são as mais sensíveis à salinidade. O PE1 (TSKC x TRENG – 256) foi o genótipo mais tolerância com base no teor relativo de água e no extravasamento de eletrólitos. O estresse salino reduziu os teores dos pigmentos clorofilianos das plantas cítricas. O dano celular foi reduzido quando se aplicou maior quantidade de nitrogênio. Palavras-chave: Citrus spp.. Bioquímica. Estresse salino. Laranja ‘mimo do céu’.  SOUSA, J. R. M. de.; GHEYI, H. R.; BRITO, M. E. B.; SILVA, F. de A. F. D. da.; LIMA, G. S. de.DAMAGE IN CELL MEMBRANE AND CHLOROPHYLLIAN PIGMENT OF CITRUS UNDER SALINE WATER AND NITROGEN FERTILIZATION  2 ABSTRACT In order to evaluate the cell membrane damage and the chlorophyll content of citrus scion-rootstock combinations under irrigation with saline water and nitrogen fertilization, two concomitant experiments in drainage lysimeters were performed. In Experiment I, five levels of saline water -ECw (0.6; 1.2; 1.8; 2.4; 3.0 dS m-1) applied to three combinations of scion-rootstock (PE1-TSKC x TRENG-256; PE2 - LCRC and PE3 - TSKC LCRC x P. trifoliata -059) with ‘Mimo-do-céu’ orange as scion were analyzed in a randomized block design with three replications in a 5 x 3 factorial scheme. In Experiment II the application of 200% of recommended nitrogen dose were applied in plants irrigated with ECw = 3.0 dS m-1 and results were compared to those obtained from plants irrigated with 100% recommended nitrogen fertilization of the first experiment, in factorial arrangement 3 x 2, corresponding to three combinations of scion-rootstock and two nitrogen levels, with three replications. The plants grafted with 'Rangpur Common' lime presented the best results for the relative water content (TRA) and electrolyte leakage, however, based on these variables, they are the most sensitive to salinity. The PE1 (TSKC x TRENG - 256) is the genotype that provides higher tolerance based on the TRA and the electrolyte leakage. Saline stress reduced levels of chlorophyllian pigments of citrus. Cellular damage was reduced when higher amounts of nitrogen are applied. Keywords: Citrus spp. Biochemistry. Salinity stress. ‘mimo-do-céu'.

scholarly journals MORPHOLOGY AND PRODUCTION OF WEST INDIAN CHERRY IRRIGATED WITH SALINE WATERS UNDER COMBINATIONS OF NITROGEN-POTASSIUM FERTILIZATION

2019 ◽  
Vol 32 (4) ◽  
pp. 1027-1037
Author(s):  
EVANDRO MANOEL DA SILVA ◽  
HANS RAJ GHEYI ◽  
REGINALDO GOMES NOBRE ◽  
JOICY LIMA BARBOSA ◽  
CRISTIANE MILENNE ALVES DE SOUZA
Keyword(s):  
Block Design ◽  
West Indian ◽  
Plant Morphology ◽  
First Year ◽  
Average Weight ◽  
Saline Stress ◽  
Potassium Fertilization ◽  
Randomized Block Design ◽  
Production Values ◽  
Saline Waters

ABSTRACT Fertilization management is one of the technologies studied to reduce nutritional imbalance in plants submitted to saline stress. In this context, we analyzed the effect of the combination of nitrogen and potassium fertilization on the morphology and production of West Indian cherry irrigated with saline waters in the first year of cultivation. The experiment was carried out in the CCTA/UFCG, in 60-L lysimeters installed in the field, in a randomized block design and 5 x 4 factorial scheme, referring to five levels of irrigation water salinity (ECw), i.e., 0.3, 1.3, 2.3, 3.3, and 4.3 dS m-1, and four combinations (C) of nitrogen-potassium fertilization, i.e., C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O, and C4 = 160% N + 125% K2O of the recommended dose for West Indian cherry, with three replicates and one plant per plot consisting of a lysimeter. The cv. ‘Flor Branca’, grafted on cv. Junco, was studied. The combination of fertilization with 70% N + 50% K2O promoted higher morphology and production values and mitigated the effect of salinity on fruit diameter up to an ECw of 1.3 dS m-1. Nitrogen-potassium fertilization in the combination of 130% N + 100% K2O impaired plant morphology and production. The ECw above 0.3 dS m-1 decreased the stem diameter, size, and average weight of fruits of West Indian cherry in the first year of cultivation.

scholarly journals IMPACT OF SALINE CONDITIONS AND NITROGEN FERTILIZATION ON CITRUS PRODUCTION AND GAS EXCHANGES

2016 ◽  
Vol 29 (2) ◽  
pp. 415-424 ◽  
Author(s):  
JÔNATAS RAULINO MARQUES DE SOUSA ◽  
HANS RAJ GHEYI ◽  
MARCOS ERIC BARBOSA BRITO ◽  
DIEGO AZEVEDO XAVIER ◽  
GUILHERME DE FREITAS FURTADO
Keyword(s):  
Block Design ◽  
N Fertilization ◽  
Poncirus Trifoliata ◽  
Saline Stress ◽  
Gas Exchanges ◽  
Rangpur Lime ◽  
Associated Gas ◽  
Randomized Block Design ◽  
Citrus Production ◽  
The Impact

ABSTRACT: 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, 2.4, and 3.0 dS m-1) and three scion-rootstock combinations: RS1- Common Sunki mandarin (TSKC) × Poncirus trifoliata English (TRENG) - 256; RS2- Common Rangpur lime (LCRSTC); and RS3- TSKC × (Rangpur lime (LCR) × P. trifoliata (TR)) - 059; with Mimo do Céu orange as the scion variety. Experiment II used a randomized block design (3 replicates), in a 3 × 2 factorial arrangement, corresponding to the three scion/rootstock combinations and two nitrogen (N) doses (100 and 200 mg kg-1 of soil). Plants were irrigated with water of 3.0 dS m-1. 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.

scholarly journals Effects of saline water and potassium fertilization on photosynthetic pigments, growth and production of West Indian Cherry

2018 ◽  
Vol 13 (3) ◽  
pp. 1 ◽  
Author(s):  
Geovani Soares de Lima ◽  
Adaan Sudario Dias ◽  
Leandro De Pádua Souza ◽  
Francisco Vanies da Silva Sá ◽  
Hans Raj Gheyi ◽  
...  
Keyword(s):  
Photosynthetic Pigments ◽  
Sandy Loam ◽  
Saline Water ◽  
Block Design ◽  
West Indian ◽  
Irrigated Agriculture ◽  
High Salinity Water ◽  
Potassium Fertilization ◽  
Randomized Block Design ◽  
Semi Arid Region

Due to the scarcity of water in the semi-arid region of Northeast Brazil, in both quantitative and qualitative terms, the use of saline water in agriculture should be considered as one alternative for irrigated agriculture. This study therefore aimed to evaluate the photosynthetic pigments, growth and production of West Indian Cherry as a function of irrigation using waters with different salinity levels and potassium (K) fertilization, after grafting. The study was carried out in drainage lysimeters under greenhouse conditions, in a eutrophic Regolithic Neosol with sandy loam texture, in the municipality of Campina Grande, PB. The experiment was set in a randomized block design, to test two levels of irrigation water electrical conductivity - ECw (0.8 and 3.8 dS m-1) and four K2O doses - KD (50, 75, 100 and 125% of recommendation), with three replicates. The dose relative to 100% corresponded to 79.2 mg K2O kg-1 of soil. Irrigation with high salinity water stimulated the biosynthesis of chlorophyll b and carotenoids, while the chlorophyll a content and the growth of the cherry were reduced markedly in the post-grafting phase. The harmful effects of salinity on the total number of fruit and fresh mass of West Indian Cherry fruit were minimized with potassium fertilization.

scholarly journals Fisiologia da percepção do estresse salino em híbridos de tangerineira “Sunki Comum” sob solução hidropônica salinizada

2015 ◽  
Vol 6 (4) ◽  
pp. 463 ◽  
Author(s):  
Francisco Vanies da Silva Sá ◽  
Marcos Eric Barbosa Brito ◽  
Luderlândio de Andrade Silva ◽  
Romulo Carantino Lucena Moreira ◽  
Pedro Dantas Fernandes ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Gas Exchange ◽  
Salinity Stress ◽  
Salinity Tolerance ◽  
Saline Water ◽  
Water Solution ◽  
Block Design ◽  
Saline Stress ◽  
Randomized Block Design ◽  
Stress Changes

In order to study the physiology of perception of saline stress in ‘Common Sunki’ mandarin hybrids, an experiment was realized in a greenhouse at the CCTA - UFCG, Pombal, PB, Brazil,using using a randomized block design with a 2x4 factorial , with two levels of salinity (0.3 and 4.0 dS m-1) and four ‘Common Sunki’ mandarin hybrids (1 - TSKC x CTARG–019; 2 - TSKC x CTSW–028; 3 - TSKC x CTSW–033 and 4 - TSKC x CTSW-041), with three replications and four plants per plot. The plants were grown hydroponically and 90 days after sowing, a saline water solution was applied on rootstocks and evaluations of gas exchange and chlorophyll fluorescence were carried out 24 and 48 hours after saline stress. Changes on physiologic conditions were observed in the hybrids TSKC x CTSW - 028, TSKC x CTSW - 033 and TSKC x CTSW - 041 during the first 24 hours of saline stress. Fot the hybrid TSKC x CTARG – 019, changes were observed after 48 hours od salinity stress. According to salinity tolerance, the hybrids could be classified as follows: TSKC x CTARG - 019 > TSKC x CTSW - 028 = TSKC x CTSW – 041 > TSKC x CTSW - 033.

scholarly journals Growth and fluorescence of ‘Tahiti’ acid lime/rootstock on Sunki mandarin hybrids under salinity

2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Luderlândio de Andrade Silva ◽  
Marcos Eric Barbosa Brito ◽  
Pedro Dantas Fernandes ◽  
Francisco Vaniés da Silva Sá ◽  
Rômulo Carantino Lucena Moreira ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Saline Water ◽  
Block Design ◽  
Saline Stress ◽  
Rangpur Lime ◽  
Randomized Block Design ◽  
Salinity Levels ◽  
Acid Lime ◽  
One Year ◽  
Drainage Lysimeter

The objective of this study was to evaluate the ecophysiological behavior of ‘Tahiti’ acid lime/rootstock grafted on Sunki mandarin hybrids during the prefloration stage of the plants, in the field, under saline stress. The progenies originating from crossings of the ‘Sunki’ mandarin with ‘Rangpur’ lime and Poncirus trioliata, as rootstocks, combined with the ‘Tahiti’ acid lime as a scion. The experiment was carried out under field conditions, at the Federal University of Campina Grande (UFCG), Pombal PB fields. In drainage lysimeter of 150 dm3, studying 10 scion/rootstock combinations, irrigated with two water salinity levels (CEa) (S1 = 0.3 and S2 = 3.0 dS m-1) making a 10 x 2 factorial scheme. The experimental design was a randomized block design, with 3 replicates and each plot consisting of a useful plant, totalizing 60 parcels. The scion/rootstock plants were transplanted at one year of age from the rootstocks sowing, being the beginning of the applications of the saline stress to the 15 days after the transplant lasting until the period of flowering, that is, up to 195 days after transplanting, During this period the plants were analyzed for growth and chlorophyll fluorescence a. The combinations less sensitive to salinity were composed of the ‘Tahiti’ grafted with TSKFL x (LCR x TR) - 018, TSKFL x TRBK - 011 and TSKFL x TRBK - 030, it being possible to use saline water with up to 3.0 dS m-1 in irrigation. Salinity did not damage the biochemical phase of the scion/rootstock combinations, only affecting the initial fluorescence of the lighted tissue.  

scholarly journals Saline water, nitrogen and phosphorus on water relations and physiological aspects of West Indian cherry

2018 ◽  
Vol 9 (3) ◽  
pp. 430-437
Author(s):  
Francisco Vanies da Silva Sá ◽  
Hans Raj Gheyi ◽  
Geovani Soares de Lima ◽  
Emanoela Pereira de Paiva ◽  
Claudivan Feitosa Lacerda ◽  
...  
Keyword(s):  
Water Relations ◽  
Irrigation Water ◽  
Crop Yields ◽  
Cell Damage ◽  
Saline Water ◽  
Water Status ◽  
Block Design ◽  
West Indian ◽  
Nitrogen And Phosphorus ◽  
The West

Salinity is a common problem in arid and semi-arid regions, causing great damage to crop yields, and management strategies that reduce the effects of salt stress on plants are necessary. So, the aim of this study was to evaluate the interaction between salinity, nitrogen and phosphorus on water relations, gas exchange and chloroplastidic pigments of the West Indian cherry in the vegetative/reproductive phase transition. The cultivation was carried out in a greenhouse, in lysimeters filled with an Entisol of low phosphorus content. The experiment was arranged in a randomized complete block design, arranged in a factorial scheme with two factors, being five levels of electrical conductivity of irrigation water (ECw)(0.6, 1.4, 2.2, 3.0 and 3.8 dS m-1) and four P:N rates (100:100, 140:100, 100:140 and 140:140% of recommendation) with three replications and one plant per plot. The analysis of results indicated that the seedlings of West Indian cherry cultivar BRS 366-Jaburu, grafted on the Criolo rootstock from the EMBRAPA Agroindústria Tropical in Pacajus-CE were used. Irrigation with saline water of up to 3.8 dS m-1 does not affect the water status of the West Indian cherry. Increased salinity of irrigation water reduces gaseous exchange activity and increases the percentage of leaf cell damage in the West Indian cherry. The 40% increase over recommended level in nitrogen supply increases the synthesis of chlorophyll b and carotenoids in the West Indian cherry, when irrigated with saline water of up to 2.2 dS m-1.

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