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 Gas exchanges and growth of passion fruit seedlings under salt stress and hydrogen peroxide1

2019 ◽  
Vol 49 ◽  
Author(s):  
André Alisson Rodrigues da Silva ◽  
Geovani Soares de Lima ◽  
Carlos Alberto Vieira de Azevedo ◽  
Hans Raj Gheyi ◽  
Leandro de Pádua Souza ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Salt Stress ◽  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Passion Fruit ◽  
Saline Stress ◽  
Gas Exchanges

ABSTRACT The semi-arid region of the Brazilian Northeast has adequate edaphoclimatic conditions for the passion fruit production, but the water used for irrigation commonly has high concentrations of salts that are harmful to the plant growth and development. A previous supply of hydrogen peroxide induces the acclimation of plants under saline stress conditions, reducing deleterious effects on their growth and physiology. This study aimed to evaluate the gas exchanges and growth of passion fruit as a function of irrigation with saline water and exogenous application of hydrogen peroxide. The experiment was carried out under greenhouse conditions, using a randomized block design, in a 4 x 4 factorial arrangement, being four levels of irrigation water electrical conductivity (0.7 dS m-1, 1.4 dS m-1, 2.1 dS m-1 and 2.8 dS m-1) and four hydrogen peroxide concentrations (0 µM, 25 µM, 50 µM and 75 µM), with four replicates and two plants per plot. The hydrogen peroxide application attenuated the deleterious effects of the irrigation water salinity on transpiration, CO2 assimilation rate, internal carbon concentration, plant height and leaf area of yellow passion fruit, at 60 days after sowing, with the concentration of 25 µM being the most efficient. Irrigation using water with electrical conductivity above 0.7 dS m-1 negatively affects the gas exchanges and growth of passion fruit, being the stomatal conductance and leaf area the most sensitive variables to the salt stress.

scholarly journals Formation of ‘Crioula’ guava rootstock under saline water irrigation and nitrogen doses

2016 ◽  
Vol 20 (8) ◽  
pp. 739-745 ◽  
Author(s):  
Leandro de P. Souza ◽  
Reginaldo G. Nobre ◽  
Evandro M. da Silva ◽  
Geovani S. de Lima ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Experimental Design ◽  
Deleterious Effect ◽  
Saline Water ◽  
Dry Weight ◽  
Saline Water Irrigation ◽  
N Dose

ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - 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 cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.

scholarly journals Emergence and biomass accumulation in seedlings of rice cultivars irrigated with saline water

2018 ◽  
Vol 22 (7) ◽  
pp. 471-475
Author(s):  
Márcio H. da C. Freire ◽  
Geocleber G. de Sousa ◽  
Maria V. P. de Souza ◽  
Emanuel D. R. de Ceita ◽  
Jamili N. Fiusa ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Dry Matter ◽  
Saline Water ◽  
Biomass Accumulation ◽  
The Other ◽  
Saline Stress ◽  
Rice Cultivars ◽  
Saline Water Irrigation ◽  
Emergence Percentage ◽  
Mean Time

ABSTRACT The objective of this study was to evaluate the performance of three rice cultivars under saline water irrigation. The experiment was carried out in full sun at the Experimental Farm of the Unilab, in Redenção, Ceará, Brazil, in January 2016. The experimental design was completely randomized (CRD), in a 5 x 3 factorial scheme [irrigation water electrical conductivity (ECw: 0.5, 1.0, 2.0, 3.0 and 4.0 dS m-1) versus three rice cultivars (C1 - Ligeirinho, C2 - Casado and C3 - Meruinho)], totaling 15 treatments, with 4 replicates of 30 seeds per cultivar. After 21 days, the following variables were evaluated: emergence percentage (EP), emergence speed index (ESI), mean time of emergence (MTE), mean speed of emergence (MSE), shoot dry matter (SDM), root dry matter (RDM) and total dry matter (TDM). The cultivar Ligeirinho showed higher tolerance to saline stress with respect to the emergence percentage, emergence speed index and mean speed of emergence. The cultivar Casado showed higher tolerance to saline stress for shoot dry matter, root dry matter and total dry matter in comparison to the other cultivars.

scholarly journals Root biomass and production of cotton cultivars subjected to saline water irrigation

2020 ◽  
pp. 965-970
Author(s):  
André Alisson Rodrigues da Silva ◽  
Márcia Cristina de Araújo Pereira ◽  
Luana Lucas de Sá Almeida Veloso ◽  
Ronaldo do Nascimento ◽  
Elka Costa Santos Nascimento ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Saline Water ◽  
Production Performance ◽  
Semiarid Region ◽  
Saline Water Irrigation ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Different Levels ◽  
Weight Number

Water scarcity and high levels of salinity in irrigation water limit irrigated cotton cultivation in the semiarid region of Northeast Brazil. So, it is necessary to adopt cultivation strategies that make the production system feasible. In this context, the present study aimed to evaluate the biomass and production of cotton cultivars subjected to different levels of saline water irrigation. The experiment was carried out under greenhouse conditions, with treatments distributed in a completely randomized design, in a 5 x 2 factorial arrangement, corresponding 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), with 4 replicates. Treatment effects were measured by the number of bolls per plant, lint weight, number of seeds per plant, total weight of seeds and dry and fresh biomass of stem, roots and leaves. Irrigation using water with electrical conductivity from 1.5 dS m-1 negatively affects the production of the cotton cultivars BRS SAFIRA and BRS 368 RF, causing reductions in all production variables analyzed. The cultivar BRS Safira has better production performance than BRS 368 RF when exposed to water salinity.

scholarly journals Fertilização organomineral e águas salinas na produção de fitomassa de Capsicum annuum

2020 ◽  
Vol 1 (50) ◽  
pp. 179
Author(s):  
Francisco de Oliveira Mesquita ◽  
Antônio Gustavo Luna Souto ◽  
Adriana Araújo Diniz ◽  
Jackson de Mesquita Alves ◽  
Alex Serafim de Lima ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Experimental Design ◽  
Capsicum Annuum ◽  
Irrigation Water ◽  
Saline Water ◽  
Organic Input ◽  
Maximum Capacity ◽  
Polyethylene Bags ◽  
The Common

An experiment was carried out in a greenhouse, from march to april/2018, in Crato-CE to evaluate the effects of biofertilizers (common and chemically rich) in substrate irrigated with different saline compositions on phytomass production of yellow pepper seedlings, success variety (952). The experiment was developed using a material or substrate from the first 20 cm of a Red-yellow Latosol. The experimental design was completely randomized in a 5x3 factorial scheme, with three replications referring to the electrical conductivity values of the irrigation water: 0.5; 1.0; 2.0; 3.0 and 4.0 dS m-1 in the soil without the organic input; with common biofertilizer, and in soil with rich biofertilizer, totalizing 45 treatments, packed in black polyethylene bags with a maximum capacity of 3.0 kg. The biofertilizer, after dilution in a 3:1 ratio, was applied only once to 10% of the substrate volume two days before sowing. Irrigation with saline water affected the morphology and quality of yellow pepper seedlings (cv. Success) but with less intensity in the treatments that received the common and rich organic inputs, respectively.

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 POST-HARVEST FRUIT QUALITY OF WEST INDIAN CHERRY UNDER SALINE WATER IRRIGATION AND POTASSIUM FERTILIZATION

2020 ◽  
Vol 33 (3) ◽  
pp. 775-784
Author(s):  
GEOVANI SOARES DE LIMA ◽  
FRANCISCO WESLEY ALVES PINHEIRO ◽  
HANS RAJ GHEYI ◽  
LAURIANE ALMEIDA DOS ANJOS SOARES ◽  
SAULO SOARES DA SILVA
Keyword(s):  
Saline Water ◽  
West Indian ◽  
Soluble Solids ◽  
Water Salinity ◽  
Relative Growth ◽  
Saline Water Irrigation ◽  
Potassium Fertilization ◽  
Four Levels ◽  
Polar Diameter

ABSTRACT The study was conducted to evaluate the growth and physicochemical quality of West Indian cherry cv. BRS 366-Jaburu, as a function of saline water irrigation and potassium fertilization. The research was conducted under greenhouse conditions in Campina Grande-PB. The experimental design was randomized blocks in a 2 x 4 factorial arrangement, which consisted of two levels of irrigation water electrical conductivity - ECw (0.8 and 3.8 dS m-1) and four levels of potassium of 50, 75, 100 and 125% of the recommendation, in which the dose of 100% was equivalent to 19.8 g of K2O per plant year-1, with three replicates and one plant per replicate. Water salinity of 3.8 dS m-1 inhibited the absolute and relative growth in diameter of the rootstock and scion of West Indian cherry plants, in the period from 100 to 465 days after transplanting. The interaction between saline levels and potassium doses was significant for hydrogen potential, soluble solids and anthocyanins levels in BRS 366-Jaburu West Indian cherry fruits, with the highest values obtained in plants fertilized with 125, 125 and 50% of the K2O recommendation and under water salinity of 3.8, 3.8 and 0.8 dS m-\ respectively. Increasing doses of K did not attenuate the effects of salt stress on the relative growth in rootstock stem diameter, fruit polar diameter and anthocyanin contents of West Indian cherry. Soluble solid contents in West Indian cherry pulp increased with application of K2O.

scholarly journals Effect of Nitrogen Fertilization on the Growth and Quality of Tamarind Seedlings Irrigated with Saline Water

2019 ◽  
pp. 1-12
Author(s):  
Reynaldo Teodoro de Fatima ◽  
Maria de Lourdes Gomes da Silva ◽  
Jackson Silva Nobrega ◽  
Reginaldo Gomes Nobre ◽  
Pollyanna Freire Montenegro Agra ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Study Design ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Saline Water ◽  
Block Design ◽  
Tamarindus Indica ◽  
Irrigation Water Salinity ◽  
Randomized Complete Block Design

Aims: The objective of this work was to evaluate the effect of nitrogen fertilization on the production of Tamarindus indica L. seedlings irrigated with saline water. Study Design:  A randomized complete block design was used in a 4 x 4 factorial scheme, whose factors were the electrical conductivity levels of the irrigation water. Place and Duration of Study: The work was conducted under protected environment conditions (greenhouse) at the Federal University of Campina Grande, Center for Agro-Food Sciences and Technology, Campus of Pombal-PB, Brazil, in the period from January and March 2017. Methodology: Effects of doses of 0, 100, 200 and 300 mg of nitrogen (N) dm-3 and electrical conductivity levels of the irrigation water (ECw) (0.3, 2.1, 3.7 and 5.2 dS m-1) on growth of Tamarindus indica L. have been studied. Results: The growth of the seedlings was reduced by the increase of the electrical conductivity of the irrigation water, however, irrigation with ECw water of 2.15 dS m-1, promotes acceptable reductions of 10% in the morphology of the tamarind tree. Conclusion: The use of nitrogen fertilization with urea did not attenuate the deleterious effects of irrigation water salinity or promoted improvements of the quality of the tamarind seedlings.

scholarly journals Biomass of sugar-apple seedlings under saline water irrigation in substrate with polymer

2018 ◽  
Vol 22 (9) ◽  
pp. 610-615
Author(s):  
Aldeir R. Silva ◽  
Francisco T. C. Bezerra ◽  
Lourival F. Cavalcante ◽  
Walter E. Pereira ◽  
Leandro M. Araújo ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Dry Matter ◽  
Saline Water ◽  
Biomass Accumulation ◽  
Total Biomass ◽  
Irrigation Frequency ◽  
Ratio Increase ◽  
Saline Water Irrigation ◽  
Daily Frequency

ABSTRACT Application of saline water causes water and salt stress, changing the behavior of the plants. The aim of this work was to evaluate the accumulation and allocation of biomass in sugar-apple seedlings under frequencies of irrigation with saline water in a substrate with soil conditioner, as well as the effect of container volume. The treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and electrical conductivity of irrigation water (0.3; 1.1; 2.7; 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and alternated), plus two additional treatments to evaluate container volume (0.75 and 1.30 dm3), distributed in blocks. The evaluations were performed at 120 days after sowing. Irrigation frequency affected the variables, and the highest values were obtained with daily irrigation, except for root/shoot dry matter ratio. Increase in the electrical conductivity of the irrigation water inhibited biomass accumulation. The effect of the container was significant for daily irrigation; higher volume led to higher root, shoot and total biomass. Polymer doses did not affect the biomass of the seedlings. Daily irrigation with non-saline water favored biomass production in sugar-apple seedlings. In the production of sugar-apple seedlings, water with electrical conductivity below 1.0 dS m-1 should be used on a daily frequency of application in 1.30 dm3 containers.

scholarly journals Frequency of irrigation with saline water in sugar-apple seedlings produced on substrate with polymer

2018 ◽  
Vol 22 (12) ◽  
pp. 825-830
Author(s):  
Aldeir R. Silva ◽  
Francisco T. C. Bezerra ◽  
Lourival F. Cavalcante ◽  
Walter E. Pereira ◽  
Leandro M. Araújo ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Irrigation Management ◽  
Irrigation Frequency ◽  
Irrigation Water Salinity ◽  
Randomized Complete Block Design ◽  
Number Of Leaves

ABSTRACT The objective of this work was to evaluate the growth of sugar-apple seedlings under irrigation management with saline water in a substrate with soil amendment. Treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and levels of irrigation water electrical conductivity (0.3, 1.1, 2.7, 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and every alternate day), and two additional treatments to evaluate container volume (1.30 and 0.75 dm3), using a randomized complete block design, with four replicates. At 120 days after sowing, the variables substrate salinity, stem diameter, plant height, number of leaves and Dickson quality index were determined. Data were submitted to analyses of variance, regression and contrast. Substrate salinity increased with the increase in irrigation water electrical conductivity and polymer doses. Growth and quality of the seedlings were reduced with increasing irrigation water salinity, and highest values of the variables were obtained in seedlings under daily irrigation. Container with larger volume led to higher growth. The use of hydrated polymer at the adopted levels had no effect on growth and quality of seedlings, requiring further studies. To produce sugar-apple seedlings with better quality, irrigation frequency should be daily and water electrical conductivity should be lower than 2 dS m-1.

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