scholarly journals RESPOSTAS FISIOLÓGICAS DE MULUNGU SUBMETIDA A ESTRESSE SALINO E APLICAÇÃO DE ÁCIDO SALICÍLICO

Irriga ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 662-675 ◽  
Author(s):  
Francisco Romário Andade Figueiredo ◽  
Maria de Fátima Queiroz Lopes ◽  
Ronimeire Torres Da Silva ◽  
Jackson Silva Nóbrega ◽  
Toshik Iarlei Da Silva ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Gas Exchange ◽  
Irrigation Water ◽  
Polynomial Regression ◽  
Saline Water ◽  
Abiotic Factors ◽  
Physiological Responses ◽  
Saline Stress ◽  
E Mail ◽  
Central Composite

RESPOSTAS FISIOLÓGICAS DE MULUNGU SUBMETIDA A ESTRESSE SALINO E APLICAÇÃO DE ÁCIDO SALICÍLICO     FRANCISCO ROMÁRIO ANDRADE FIGUEIREDO1; MARIA DE FÁTIMA QUEIROZ LOPES2; RONIMEIRE TORRES DA SILVA2; JACKSON SILVA NÓBREGA2; TOSHIK IARLEY DA SILVA3 E RISELANE DE LUCENA ALCÂNTARA BRUNO2   1 Departamento de Ciências Vegetais, Universidade Federal Rural do Semi-Árido - UFERSA, Rua Francisco Mota, 572, Presidente Costa e Silva, 59625-900, Mossoró - RN, Brasil. E-mail: [email protected] 2 Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba - UFPB, Rodovia PB-079, 58397-000, Areia-PB, Brasil. E-mails: [email protected]; [email protected]; [email protected]; [email protected] 3 Departamento de Fitotecnia, Universidade Federal de Viçosa - UFV, Avenida Peter Henry Rolfs, s/n - Campus Universitário, 36570-900, Viçosa – MG, Brasil. E-mail: [email protected]     1 RESUMO   O mulungu (Erythrina velutina Willd.) é uma espécie florestal nativa da região Nordeste do Brasil, sendo utilizada para fins econômicos e medicinal. No entanto, o seu desempenho fisiológico pode ser comprometido por diversos fatores bióticos e abióticos, dentre estes, o estresse salino. Nesse sentido, a aplicação do ácido salicílico, fitohormônio de origem fenólica, torna-se uma estratégia promissora na busca de minimizar esses efeitos deletérios. Assim, o objetivou-se conhecer as respostas fisiológicas do mulungu irrigado com água salina associado a aplicação de ácido salicílico. O delineamento utilizado foi em blocos casualizados, em esquema fatorial incompleto 5x5, gerados a partir da matriz Composto Central de Box com cinco níveis de condutividade elétrica da água de irrigação (0,5; 1,74; 4,75; 7,76 e 9,0 dS m-1) e cinco doses de ácido salicílico (0,0; 0,29; 1,0; 1,71 e 2,0 mM L-1), com quatro repetições. Foram avaliadas as trocas gasosas, fluorescência e índice de clorofila aos 60 dias após a irrigação com água salina. Os dados foram submetidos à análise de variância pelo teste F, nos casos de significância foi realizada análise de regressão polinomial. A salinidade da água de irrigação ocasiona efeitos deletérios nas trocas gasosas de Erythrina velutina Willd. Os índices de clorofila foram afetados positivamente pelos níveis salinos aplicados e a fluorescência inicial das plantas foi atenuada pela aplicação de ácido salicílico.   Palavras-chave: Erythrina velutina Willd, caatinga, salinidade, trocas gasosas     FIGUEIREDO, F. R. A.; LOPES, M. F. Q.; SILVA, R. T.; NÓBREGA, J. S.; SILVA, T. I.; AND BRUNO, R. A. L. PHYSIOLOGICAL RESPONSES OF MULUNGU SUBMITTED TO SALT STRESS AND APPLICATION OF SALICYLIC ACID           2 ABSTRACT   Mulungu (Erythrina velutina Willd.) is a forest species native to the Northeast region of Brazil, being used for economic and medicinal purposes. However, its physiological performance can be compromised by several biotic and abiotic factors, among them, saline stress. That way, the application of salicylic acid, phytohormone of phenolic origin, becomes a promising strategy in the search to minimize these deleterious effects. Thus, the objective was to learn the physiological responses of mulungu irrigated with saline water associated with the application of salicylic acid. The design was a randomized complete block, in an incomplete factorial scheme, using the Box Central Composite (CCB) matrix with five levels of electrical conductivity of irrigation water (0.5; 1.74; 4.75; 7.76 and 9.0 dS m-1), and five salicylic acid doses (0.0, 0.29, 1.0, 1.71 and 2.0 mM), with four replicates. Gas exchange, fluorescence and chlorophyll indices were evaluated 60 days after irrigation with saline water. Data were submitted to analysis of variance by the F test, in cases of significance polynomial regression analysis was performed. The salinity of irrigation water causes deleterious effects on the gas exchange of Erythrina velutina Willd. The chlorophyll indices were positively affected by saline levels applied and the initial fluorescence of the plants was attenuated by the application of salicylic acid.   Keywords: Erythrina velutina Willd, caatinga, salinity, gas exchange

scholarly journals SALICYLIC ACID AS AN ATTENUATOR OF SALT STRESS IN SOURSOP

2020 ◽  
Vol 33 (4) ◽  
pp. 1092-1101
Author(s):  
ANDRÉ ALISSON RODRIGUES DA SILVA ◽  
GEOVANI SOARES DE LIMA ◽  
CARLOS ALBERTO VIEIRA DE AZEVEDO ◽  
LUANA LUCAS DE SÁ ALMEIDA VELOSO ◽  
HANS RAJ GHEYI
Keyword(s):  
Electrical Conductivity ◽  
Salicylic Acid ◽  
Salt Stress ◽  
Stomatal Conductance ◽  
Gas Exchange ◽  
Irrigation Water ◽  
Saline Water ◽  
Stress Effects ◽  
Saline Waters ◽  
Induced Tolerance

ABSTRACT The search for alternatives that enable the use of saline waters in agriculture has become constant. In this context, the objective was to evaluate the effects of salicylic acid in mitigating salt stress effects on the growth and gas exchange of soursop cv. ‘Morada Nova’. The study was conducted in a greenhouse, in the municipality of Campina Grande - PB, Brazil. Treatments were distributed in randomized blocks, in a 5 x 4 factorial arrangement, corresponding to five levels of electrical conductivity of irrigation water - ECw (0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1) and four concentrations of salicylic acid - SA (0; 1.2; 2.4 and 3.6 mM), with three replicates. Irrigation with saline water compromised the growth and gas exchange of soursop cv. ‘Morada Nova’. However, exogenous application of salicylic acid induced tolerance to salt stress in soursop plants, as their growth, transpiration, stomatal conductance, photosynthesis and instantaneous carboxylation efficiency were favored by the application of salicylic acid, even when exposed to water salinity.

scholarly journals CULTIVO DO MILHETO IRRIGADO COM ÁGUA SALINA EM DIFERENTES COBERTURAS MORTAS

Irriga ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 347-360
Author(s):  
Amitair Ferreira Lima ◽  
Geocleber Gomes De Sousa ◽  
Maria Vanessa Pires De Souza ◽  
Francisco Barroso Da Silva Junior ◽  
Silas Primola Gomes ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Dry Matter ◽  
Saline Water ◽  
Soil Protection ◽  
Saline Stress ◽  
Saturation Extract ◽  
Soil Saturation ◽  
Number Of Leaves ◽  
E Mail

CULTIVO DO MILHETO IRRIGADO COM ÁGUA SALINA EM DIFERENTES COBERTURAS MORTAS     AMITAIR FERREIRA LIMA1; GEOCLEBER GOMES DE SOUSA2; MARIA VANESSA PIRES DE SOUZA3; FRANCISCO BARROSO DA SILVA JUNIOR4; SILAS PRIMOLA GOMES2 E CLARISSA LIMA MAGALHÃES5   1 Engenheira agrônoma formada pela Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Avenida da abolição, 3, Centro, 62.790-000, Redenção/Ce, Brasil). E-mail: [email protected] 2 Prof. Doutor, Instituto de Desenvolvimento Rural, Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Avenida da abolição, 3, Centro, 62.790-000, Redenção/Ce, Brasil). E-mail: [email protected], [email protected] 3 Mestranda pelo programa de pós graduação em fitotecnia da Universidade Federal Rural do Semiárido, Campus Mossoró (Av. Francisco Mota, 572, Bairro Costa e Silva, CEP: 59.625-900, Mossoró/RN, Brasil). E-mail: [email protected] 4 Mestrando pelo programa de pós graduação em ciência do solo da Universidade Federal do Ceará, Campus do Pici (Av. Mister Hull, 2977, Pici, 60.021-970, Fortaleza/Ce, Brasil). E-mail: [email protected] 5 Discente no curso de agronomia da Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Avenida da abolição, 3, Centro, 62.790-000, Redenção/Ce, Brasil). E-mail: [email protected]     1 RESUMO   Objetivou-se com o presente trabalho, avaliar o crescimento e acúmulo de biomassa de plantas de milheto irrigadas com água salina em solo com diferentes coberturas. O experimento foi realizado em agosto de 2018, a pleno sol na horta didática da Universidade da integração internacional da Lusofonia Afro-Brasileira (UNILAB), Redenção, Ceará. O delineamento experimental foi inteiramente casualizado (DIC), em esquema fatorial 5x4, com 4 repetições. O primeiro fator referente aos valores de condutividade elétrica da água de irrigação - CEa: A1 (1,0 dS m-1), A2 (2,0 dS m-1), A3 (3,0 dS 11 m-1), A4 (4,0 dS m-1) e A5 (5,0 dS m-1), versus as coberturas adotadas, C1 (sem cobertura-controle), C2 (palha de arroz), C3 (bagana de cana-de-açúcar) e C4 (resíduos vegetais de espontâneas). Aos 35 dias após a semeadura, foram avaliadas: altura das plantas (AP), número de folhas (NF), diâmetro do colmo (DC), comprimento de raiz (CR), área foliar (AF), matéria seca da parte aérea (MSPA), da raiz (MSR) e total (MST), pH do solo e a condutividade elétrica do extrato de saturação do solo (CEes). O aumento da condutividade elétrica na água de irrigação, promoveu aumento da salinidade no extrato de saturação do solo, assim como reduções na emissão do número de folhas no milheto e o uso da cobertura morta amenizou os efeitos da salinidade contida na água, nas variáveis: MSPA, MSR, MST, DC e AP, sendo a cobertura de casca de arroz a alternativa mais eficiente na atenuação desses efeitos.   Palavras-chave: Penissetum glaucum L., estresse salino, proteção do solo     LIMA, A. F.; SOUSA, G. G.; SOUZA, M. V. P.; SILVA JUNIOR, F. B.; GOMES, S. P.; MAGALHÃES, C. L. CULTIVATION OF MILLET IRRIGATED WITH SALINE WATER IN DIFFERENT MULCHES     2 ABSTRACT   The objective of this work was to evaluate the growth and accumulation of dry matter of millet plants irrigated with saline water in soil with different mulches. The experiment was carried out in August 2018, under full sun in the didactic garden of the University of the International Integration of Afro-Brazilian Lusophony (UNILAB), Redenção, Ceará. The experimental design was completely randomized (DIC), in a 5x4 factorial scheme, with four replicates. The first factor referring to the values of electrical conductivity of the irrigation water: A1 (1.0 dS m-1), A2 (2.0 dS m-1), A3 (3.0 dS m-1), A4 (4.0 dS m-1) and A5 (5.0 dS m-1), versus the coverages adopted, C1 (without cover), C2 (rice straw), C3 (sugarcane bagana) and C4 (vegetable spontaneous waste). At 35 days after sowing, plant height (AP), number of leaves emitted (NF), stalk diameter (DC), root length (CR), leaf area (AF), shoot dry matter (MSA), root dry matter (MSR), total dry matter (MST), soil pH and soil saturation extract electrical conductivity (CEs) were assessed. The increase in the electrical conductivity in the irrigation water promoted an increase in salinity in the soil saturation extract, as well as reductions in the number of leaves in the millet, and the use of the mulch reduced the effects of the salinity contained in the water in the following variables: MSPA, MSR, MST, DC and AP, with rice husk coverage being the most efficient alternative to mitigate these effects.   Keywords: Penissetum glaucum L., saline stress, soil protection.

scholarly journals Growth and gas exchange of corn under salt stress and nitrogen doses

2021 ◽  
Vol 25 (3) ◽  
pp. 174-181
Author(s):  
Henderson C. Sousa ◽  
Geocleber G. de Sousa ◽  
Carla I. N. Lessa ◽  
Antonio F. da S. Lima ◽  
Rute M. R. Ribeiro ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Gas Exchange ◽  
Leaf Area ◽  
Plant Height ◽  
Saline Water ◽  
Saline Stress ◽  
Low Salinity ◽  
Salinity Water ◽  
Hybrid Maize ◽  
The University

ABSTRACT The excess of salts can affect several processes in the crops, and nitrogen (N) can attenuate the depressive effect of salinity. The objective was to evaluate the influence of nitrogen doses on the growth and gas exchange of corn crop irrigated with saline water. The experiment was conducted from June to September 2019 at the University of International Integration of Afro-Brazilian Lusophony, Redenção, CE, Brazil. The experimental design was completely randomized, in a 2 x 3 factorial scheme (supply water of 0.3 dS m-1 and saline solution of 3.0 dS m-1) and three nitrogen doses, 0, 80, and 160 kg ha-1, corresponding to 0, 50, and 100% of the recommended dose respectively, with six repetitions. At 30 and 45 days after sowing (DAS), plant height, leaf area, number of leaves, photosynthesis, transpiration, and stomatal conductance were evaluated. Saline stress affects plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The doses of 80 and 160 kg ha-1 provide greater performance in plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The use of low salinity water and doses of 80 and 160 kg ha-1 were more efficient in terms of plant height, leaf area, photosynthesis, transpiration, and conductance at 45 DAS. The dose of 160 kg ha-1 of N attenuates the harmful effects of salts in AG 1051 hybrid maize plants, providing higher values of photosynthesis, transpiration, and stomatal conductance at 45 DAS when irrigated with water of 3.0 dS m-1.

scholarly journals Growth and quality of soursop (Annona muricata, L.) seedlings under saline stress and hydrogen peroxide (H2O2)

2017 ◽  
pp. 1643-1649
Author(s):  
André Alisson Rodrigues da Silva ◽  
Luana Lucas de Sá Almeida Veloso ◽  
Geovani Soares de Lima ◽  
Carlos Alberto Vieira de Azevedo ◽  
Hans Raj Gheyi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Irrigation Water ◽  
Saline Water ◽  
Saline Stress ◽  
Annona Muricata ◽  
Relative Growth ◽  
Saline Water Irrigation ◽  
Sensitive Variable

This study aimed to evaluate growth and quality of soursop seedlings cv. Morada Nova, as a function of saline water irrigation and exogenous applications of hydrogen peroxide (H2O2), under greenhouse conditions. The experimental design used was randomized blocks in 5 x 5 factorial scheme, corresponding to the combination of five levels of irrigation water electrical conductivity – ECw (0.7, 1.4, 2.1, 2.8 and 3.5 dS m-1) and five concentrations of hydrogen peroxide (0, 25, 50, 75 and 100 µM). The results showed that Hydrogen peroxide concentrations were applied by soaking the seed for 24 h and by spraying on all leaves of soursop seedlings. Irrigation water above electrical conductivity of 0.7 dS m-1 negatively affected growth and quality of soursop seedlings cv. Morada Nova. The dry phytomass of root was the most sensitive variable to saline stress. Hydrogen peroxide concentrations of 31 and 100 µM led to highest relative growth rate in leaf area and dry phytomass of leaves and stem, respectively. The quality of soursop seedlings cv. Morada Nova was not compromised by using water with electrical conductivity of 3.5 dS m-1 in irrigation.

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 Irrigation with saline water in soybean (Glycine max (L.) Merr.) in a soil with bovine biofertilizer

2018 ◽  
Vol 22 (9) ◽  
pp. 604-609 ◽  
Author(s):  
Geocleber G. de Sousa ◽  
Valdécio dos S. Rodrigues ◽  
Stallone da C. Soares ◽  
Ítalo N. Damasceno ◽  
Jamili N. Fiusa ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Irrigation Water ◽  
Saline Water ◽  
Water Salinity ◽  
Saline Stress ◽  
Initial Growth ◽  
Gas Exchanges ◽  
Irrigation Water Salinity ◽  
Glycine Max L ◽  
Soybean Plants

ABSTRACT Salinity is a complex phenomenon that affects the metabolic processes of the plant, changing the physiological and biochemical parameters. In this context, the objective of this study was to evaluate the effect of irrigation water salinity on growth, biomass and gas exchanges in soybean crop in soil with and without biofertilizer. The experiment was carried out in a greenhouse at the experimental area of the Agrometeorological Station of the UFC, Fortaleza, CE, Brazil, from May to June 2016. The treatments were distributed in randomized blocks in a 5 × 2 factorial scheme, corresponding to the levels of irrigation water salinity: 0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1, in soil without and with bovine biofertilizer, in five replicates. The following variables were evaluated: growth (plant height, number of leaves, stem diameter, and leaf area), biomass (leaf, root and total dry matter) and gas exchanges (photosynthesis, stomatal conductance and transpiration). Irrigation water salinity reduced photosynthesis, stomatal conductance and transpiration, but with less intensity in the plants that received bovine biofertilizer. The aerobically fermented bovine biofertilizer attenuates saline stress on the initial growth and biomass of soybean plants.

scholarly journals Saline Water, Pit Coating and Calcium Fertilization on Chlorophyll, Fluorescence, Gas Exchange and Production in Passion Fruit

2019 ◽  
Vol 11 (2) ◽  
pp. 319
Author(s):  
Marlene A. F. Bezerra ◽  
Lourival F. Cavalcante ◽  
Francisco T. C. Bezerra ◽  
Aldeir R. Silva ◽  
Flaviano F. Oliveira ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Saline Water ◽  
Net Photosynthesis ◽  
Fruit Production ◽  
Passion Fruit ◽  
Plant Production ◽  
Water Salinity ◽  
Saline Stress ◽  
Leaf Chlorophyll ◽  
Calcium Fertilization

In plants sensitive to salinity, such as passion fruit, irrigation with saline water can cause physiological disturbances and reduce fruit production, necessitating the use of cultural practices that mitigate saline stress. The objective of this study was to evaluate the effects of water salinity, pit coating with high-strength polyethylene film, and calcium fertilization on the physiological and productive aspects of passion fruit ‘BRS Gigante Amarelo’. The treatments were arranged in split plot in the scheme 2WS × (2LP × 5DC), corresponding to water salinity (0.3 and 4.0 dS m-1) as the main plot, side coating of pits (without and with) doses of calcium (0; 30; 60; 90 and 120 kg ha-1). During the flowering phase, we evaluated leaf chlorophyll indices, fluorescence kinetics, and gas exchange. The increase in calcium doses up to 60 kg ha-1 increased leaf chlorophyll and quantum efficiency. The stomata did not restrict gas exchange, but salinity resulted in reduced net photosynthesis and plant production. The lateral coating of the pits intensified the reduction in salinity-promoted production, while calcium mitigated the effects of the salts. Entisol cultivated with passion fruit should not be irrigated with saline water of 4.0 dS m-1; lateral pit coating is not advised. In an Entisol with an initial calcium level of 1.92 cmolc dm-3, the recommended application dose is 60 kg ha-1 for passion fruit cultivation.

scholarly journals PRODUTIVIDADE DA CULTURA DO AMENDOIM SOB DIFERENTES SUPRESSÕES DA IRRIGAÇÃO COM ÁGUA SALINA

Irriga ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 210-220
Author(s):  
Geovana Ferreira Goes ◽  
Geocleber Gomes de Sousa ◽  
Samuel de Oliveira Santos ◽  
Francisco Barroso da Silva Júnior ◽  
Emanuel D'Araújo Ribeiro de Ceita ◽  
...  
Keyword(s):  
Water Deficit ◽  
Arachis Hypogaea ◽  
Saline Water ◽  
Salt Water ◽  
Water Suppression ◽  
Saline Stress ◽  
High Salinity Water ◽  
Arachis Hypogaea L ◽  
Salinity Water ◽  
E Mail

PRODUTIVIDADE DA CULTURA DO AMENDOIM SOB DIFERENTES SUPRESSÕES DA IRRIGAÇÃO COM ÁGUA SALINA     GEOVANA FERREIRA GOES1; GEOCLEBER GOMES DE SOUSA2; SAMUEL DE OLIVEIRA SANTOS1; FRANCISCO BARROSO DA SILVA JUNIOR3; EMANUEL D’ ARAÚJO RIBEIRO DE CEITA4 E KELLY NASCIMENTO LEITE5   1 Graduandos no curso de Agronomia da Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Avenida da Abolição, 3, centro, 62.790-000, Redenção/Ce, Brasil). E-mails: [email protected]; [email protected]. 2 Prof. Doutor, Instituto de Desenvolvimento Rural, Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Avenida da Abolição, 3, centro, 62.790-000, Redenção/Ce, Brasil). E-mail:[email protected]. 3Mestrando pelo Programa de Pós-graduação em Ciência do Solo da Universidade Federal do Ceará, Campus do Pici (Avenida Mister Hull, 2977, Pici, 60.021-970, Fortaleza/Ce, Brasil) Email: [email protected]. 4Mestrando pelo Programa de Pós-graduação em Agronomia (Ciência do Solo) da Faculdade de Ciências Agrárias e Veterinárias (Rua: Prof. Paulo Donato Castellane, SN, 14.004-900, Jaboticabal/SP, Brasil)  E-mail: [email protected]. 5Prof. Doutora, Centro Multidisciplinar da Universidade Federal do Acre, Campus Floresta (Rua Estrada da Canela Fina, KM 12 Gleba Formoso - São Francisco, 69.895-000, Cruzeiro do Sul/AC). E-mail: [email protected].     1 RESUMO   O déficit hídrico associada ao estresse salino afetam a produtividade das culturas agrícolas. Objetivou-se avaliar a produtividade da cultura de amendoim irrigado com água de baixa e alta salinidade submetida a diferentes intervalos de supressão. O experimento foi conduzido em condições de campo, no período de agosto a outubro de 2019 na Fazenda Experimental de Piroás, Redenção-CE. O delineamento experimental utilizado foi o de blocos ao acaso em arranjo fatorial, sendo o primeiro fator a salinidade das águas de irrigação (1,0 e 4,0 dS m-¹) e o segundo fator, quatro intervalos de supressões (IS1= 40 a 55 DAS; IS2 = 55 a 70 DAS; IS3 = 70 a 85 DAS e IS4 = sem intervalos de supressão), com quatro repetições. Foram avaliadas as seguintes variáveis: número, massa, comprimento e diâmetro de vagem e a produtividade. O tratamento sem intervalo de supressão hídrica associado a água de menor salinidade proporcionam maior número e diâmetro de vagem.  A água de maior salinidade afeta a massa e comprimento de vagem. A utilização da água de maior ou menor salinidade sem intervalo de supressão da irrigação proporciona maior produtividade da cultura do amendoim.   PALAVRAS CHAVES: Arachis hypogaea L., déficit hídrico, estresse salino     GOES, G. F.; SOUSA, G. G.; SANTOS, S. O.; SILVA JUNIOR, F. B.; CEITA, E. A. R.; LEITE, K. N.PEANUT CULTURE YIELD UNDER DIFFERENT SALT WATER IRRIGATION SUPPRESSIONS    2 ABSTRACT  The water deficit associated with salt stress affects the productivity of agricultural crops. The objective was to evaluate the productivity of peanut culture irrigated with low and high salinity water submitted to different suppression intervals. The experiment was conducted under field conditions, from August to October 2019 at the Experimental Farm of Piroás, Redenção-CE. The experimental design used for the randomized blocks in a factorial arrangement, with the first factor is the salinity of the irrigation water (1.0 and 4.0 dS m-¹) and the second factor, four suppression intervals (IS1 = 40 a 55 DAS; IS2 = 55 to 70 DAS; IS3 = 70 to 85 DAS and IS4 = without suppression intervals), with four repetitions. The following variables were evaluated: number, mass, pod length and diameter and yield. Treatment without water suppression interval associated with less saline water provides a greater number and diameter of pods. Higher salinity water affects pod mass and length. The use of water of greater or lesser salinity without interval of suppression of irrigation offers the highest yield of the peanut culture.  Keywords: Arachis hypogaea L., water déficit, saline stress.

scholarly journals TAXA DE CRESCIMENTO E PRODUÇÃO DE GIRASSOL IRRIGADO COM ÁGUA SALINA SOB DOSES DE NITROGÊNIO

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 233 ◽  
Author(s):  
Pedro Henrique Pinto Ribeiro ◽  
Hans Raj Gheyi ◽  
Claudio Augusto Uyeda ◽  
Marconi Batista Teixeira ◽  
Frederico Antonio Loureiro Soares ◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Growth Rates ◽  
Irrigation Water ◽  
Social Inclusion ◽  
Crop Production ◽  
Saline Water ◽  
Biodiesel Production ◽  
Water Salinity ◽  
Helianthus Annuus L ◽  
E Mail

TAXA DE CRESCIMENTO E PRODUÇÃO DE GIRASSOL IRRIGADO COM ÁGUA SALINA SOB DOSES DE NITROGÊNIO PEDRO HENRIQUE PINTO RIBEIRO1; HANS RAJ GHEYI2; CLAUDIO AUGUSTO UYEDA3; MARCONI BATISTA TEIXEIRA4; FREDERICO ANTONIO LOUREIRO SOARES5 E NILDO DA SILVA DIAS6 [1]Mestre em Engenharia Agrícola, Depto. de Engenharia Agrícola, UFCG, Campina Grande – PB. E-mail: [email protected] Visitante, Núcleo de Engenharia de Água e Solo, Universidade Federal do Recôncavo da Bahia, UFRBA, Cruz das Almas - BA. E-mail: [email protected] EBTT, Instituto Federal Pernambuco, IFPE, Vitória do Santo Antão – PE. E-mail: [email protected] EBTT, Instituto Federal Goiano – Campus Rio Verde, IFG, Rio Verde – GO. E-mail: [email protected] EBTT, Instituto Federal Goiano – Campus Rio Verde, IFG, Rio Verde – GO. E-mail: [email protected] Associado 2, Departamento de Ciências Ambientais e Tecnológicas, Universidade Federal Rural do Semi-Árido, Mossoró, RN. E-mail: [email protected]  1 RESUMO O girassol é uma cultura com grande potencial de utilização no Brasil em projetos de inclusão social, como integrante de sistemas de produção de grãos e biodiesel. A utilização de águas salinas para irrigação é uma realidade, pois tem aumentado a disponibilidade de água, a produção agrícola e o controle de riscos ambientais. Objetivou-se com o presente trabalho, avaliar a taxa de crescimento e a produção do girassol (Helianthus annuus L., cv. EMBRAPA 122/V-2000) sob o efeito da salinidade da água de irrigação e adubação nitrogenada. O experimento foi desenvolvido em ambiente protegido em vasos de plástico de 20 L com Neossolo Regolítico Eutrófico de textura areia franca. Foi utilizado um delineamento de blocos casualizados em parcelas subdivididas, com 5 níveis de salinidade de água – CEa (0,5; 1,5; 2,5, 3,5 e 4,5 dS m-1 – Tratamento das Parcelas) e 5 doses de nitrogênio (60, 80, 100, 120 e 140% da dose de N recomendada para a cultura em ambientes protegidos – Tratamento das Subparcelas) com três repetições, totalizando 75 unidades experimentais. Foram avaliadas as taxas de crescimento absoluto e relativo da altura da planta e do diâmetro caulinar, a fitomassa seca total dos aquênios; dos aquênios viáveis; dos aquênios não viáveis; dos capítulos; do número total de aquênios e do diâmetro do capítulo seco. Não houve efeito significativo dos níveis de nitrogênio sobre as taxas de crescimento, no entanto afetaram significativamente a fitomassa seca dos aquênios. A salinidade da água de irrigação teve um efeito significativo sobre as taxas de crescimento do girassol, a partir dos 30 dias após a semeadura, demonstrando a tolerância do girassol à salinidade na fase de crescimento. Houve efeito significativo sobre a fitomassa do capítulo, do total de aquênios, dos aquênios não viáveis e sobre a percentagem de aquênios viáveis, diminuindo em geral a produção do girassol. A interação salinidade da agua x nitrogênio, não foi significativa para nenhuma das variáveis estudadas. Palavras-Chave: Helianthus annuus L., salinidade, nutrição de plantas. RIBEIRO, P. H. P.; GHEYI, H. R.; UYEDA, C. A.; TEIXEIRA, M. B.; SOARES, F. A. L.; DIAS, N. S. GROWTH RATES AND PRODUCTION OF SUNFLOWER IRRIGATED WITH SALINE WATER AND NITROGEN DOSES  2 ABSTRACT Sunflower is a crop with a great potential of utilization in social inclusion projects as part of grain and biodiesel production systems.  The use of saline waters for irrigation is a reality because it has increased water availability, crop production and control of environmental risks. The objective of the present study was to evaluate the growth rates and production of sunflower (Helianthus annuus L., cv. EMBRAPA 122/V-2000), irrigated with saline water and nitrogen fertilization. The experiment was conducted in a semi controlled environment in 20 L plastic pots filled with Regosols of loamy sand texture. A randomized block split plot experimental design was used with five irrigation water salinity levels - ECw (0.5, 1.5, 2.5, 3.5 and 4.5 dS m-1 – Main Plots) and five nitrogen levels (60, 80, 100, 120 and 140% of the recommended dose for the crop in protected environments – Secondary Plots), with three replicates totalizing 75 experimental plots. The absolute and relatives growth rates of plant height and stem diameter, the number and dry phytomass of achenes and the chapter diameter were analyzed. There was no significant effect of nitrogen treatments on the growth rates, however the dry phytomass of the achenes was significantly affected. Water salinity of the irrigation water had a significant effect on the growth rates only after 30 days of growth, showing the tolerance of the plant to salinity during vegetative growth, however, significant effect was observed on phytomass of chapters, total achenes, non-viable achenes and percentage of viable achenes, decreasing in general sunflower production. The interaction between water salinity and nitrogen was not significant for any of the studied variables. Keywords: Helianthus annuus L., salinization, plant nutrition.

scholarly journals Ocimum basilicum L. Seeds Quality as Submitted to Saline Stress and Salicylic Acid

2018 ◽  
Vol 10 (5) ◽  
pp. 159
Author(s):  
Toshik Iarley da Silva ◽  
Jackson Silva Nóbrega ◽  
Francisco Romário Andrade Figueiredo ◽  
Leonardo Vieira de Sousa ◽  
João Everthon da Silva Ribeiro ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Irrigation Water ◽  
Block Design ◽  
Dry Mass ◽  
Ocimum Basilicum ◽  
Saline Stress ◽  
Modern Agriculture ◽  
Seedling Length ◽  
Irrigation Water Salinity

The quality of the seeds is of great importance for the cultivation of plants, however, the quality can be altered by the abiotic effects, amongst such, saline stress. Salinity is one of the great obstacles faced by modern agriculture, however, alternatives have been researched to mitigate its effects, where it is possible to mention the use of salicylic acid. The objective of this study was to evaluate the quality of basil (Ocimum basilicum L.) seeds cultivated using applications of salicylic acid to attenuate the irrigation water salinity. The experimental design was a completely randomized complete block design in incomplete factor scheme, with five conductivities for irrigation water (0.5, 1.3, 3.25, 5.2, 6.0 dS m-1) and five salicylic acid doses (0.0, 0.29, 1.0, 1.71 and 2.0 mM), with five and four replicates, respectively. The electrical conductivity presented an effect on germination, while the salicylic acid presented an effect on the germination speed index, emergence speed index, shoot length, root and seedling length, and seedlings dry mass. The highest correlations were obtained amongst the germination variables. Therefore, it is possible to affirm that salicylic acid can be used up to the dose of 1.0 mM with no further damage to basil seeds’ quality.

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