scholarly journals IMPROVING TOLERANCE OF CORTADERIA SELLOANA PLANTS TO IRRIGATION WATER DEFICIENCY BY USING ASCORBIC ACID

2020 ◽  
Vol 7 (4) ◽  
pp. 363-377
Author(s):  
M. El-Ashwah
Keyword(s):  
Ascorbic Acid ◽  
Irrigation Water ◽  
Water Deficiency ◽  
Cortaderia Selloana

scholarly journals Radish (Raphanus sativus L.) morphophysiology under salinity stress and ascorbic acid treatments

2018 ◽  
Vol 36 (3) ◽  
pp. 257-265
Author(s):  
Ana Gabriela de Sousa Basílio ◽  
Leonardo Vieira De Sousa ◽  
Toshik Iarley Da Silva ◽  
Joana Gomes De Moura ◽  
Anderson Carlos de Melo Gonçalves ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Chlorophyll A ◽  
Irrigation Water ◽  
Raphanus Sativus ◽  
Saline Water ◽  
Block Design ◽  
Total Content ◽  
Shoot Height ◽  
Fluorescence Maximum ◽  
Raphanus Sativus L

The use of saline or low-quality water in agriculture is an alternative to increasing water demand, especially in arid or semi-arid regions. However, the use of water with high levels of salts causes disturbances in plants, which can lead to their death; thus, alternatives to mitigate these effects are relevant in current agriculture. Currently, antioxidants are used to mitigate the effects of salts in plants, and among them ascorbic acid has been frequently mentioned. Therefore, the aim of this study was to evaluate the effect of irrigation with saline water combined with applications of ascorbic acid on the development and photosynthetic activity of radish (Raphanus sativus L.) plants. This experiment was carried out in a greenhouse with a randomized block design, with the treatments distributed in a 5.5 incomplete factorial scheme, composed of five electrical conductivities of the irrigation water (ECw): 0.50, 1.30, 3.25, 5.20 and 6.00 dS m-1, and five ascorbic acid (AA) doses: 0.00, 0.29, 1.00, 1.71, and 2.00 mM. The evaluated variables were: shoot height, leaf number, tuberous root diameter, chlorophyll a, b and total content, chlorophyll a/b ratio, initial fluorescence, maximum fluorescence, variable fluorescence and quantum yield of photosystem II. The saline water influenced the analyzed variables in the radish crop regardless of the ascorbic acid application. The ascorbic acid was not efficient in attenuating the deleterious effect of salinity in the irrigation water on the development and fluorescence of the radish. However, it was observed that the concentration of 1.00 mM of ascorbic acid promoted an increase in chlorophyll a, b and total in the saltstressed radish plants.

scholarly journals Agronomic performance and gaseous exchanges of the radish under saline stress and ascorbic acid application

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
Ygor Henrique Leal ◽  
Leonardo Vieira de Sousa ◽  
Toshik Iarley Da Silva ◽  
Joana Gomes de Moura ◽  
Ana Gabriela Sousa Basílio ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Foliar Application ◽  
Net Photosynthesis ◽  
Saline Stress ◽  
Agronomic Performance ◽  
Electrical Conductivities ◽  
Use Efficiency

The radish is a short-cycle vegetable that has excellent nutritional and medicinal properties. It is considered rustic, meaning it tolerates adverse conditions with the possibility of being irrigated with saline water, which creates stress. In this context, this study aimed to evaluate the effect of electrical conductivities in irrigation water and doses of ascorbic acid on the agronomic performance and gaseous exchanges of radishes. This experiment was carried out in a protected environment at the Agricultural Sciences Center of the Federal University of Paraíba, Areia, Paraíba (Brazil). The experiment design used randomized blocks with five doses of ascorbic acid (0.0, 0.29, 1.0, 1.71 and 2.0 mM) and five electrical conductivities in the irrigation water (0.5, 1.3, 3.25, 5.2 and 6.0 dS m-1), with four replicates. The growth, gas exchange and production were evaluated. The doses of ascorbic acid were not significant. The increase in the electrical conductivities of the irrigation water provided a reduction in the agronomic performance and gas exchanges, except for the net photosynthesis, water use efficiency and instantaneous carboxylation efficiency, which were not significant. There was a relationship between the net photosynthesis, transpiration, internal concentration of CO2 and water use efficiency and the stomatal conductance. The agronomic performance and gaseous exchanges of the radish culture were influenced by the salinity. The foliar application of ascorbic acid did not influence the agronomic yield and gaseous exchanges of the radishes at the tested doses.

scholarly journals Response of Growth, Yield and Essential Oil of Geranium Plants to Surface Irrigation and Humic Acid Treatments

2021 ◽  
pp. 39-56
Author(s):  
K. A. Hammam ◽  
Salwa S. S. AwadAlla ◽  
Tahany Noreldin
Keyword(s):  
Humic Acid ◽  
Essential Oil ◽  
Irrigation Water ◽  
Water Productivity ◽  
Irrigation Treatment ◽  
Growth Yield ◽  
Volatile Oil ◽  
Water Deficiency ◽  
Surface Irrigation ◽  
Growing Seasons

Water is among the most important factors affected growth, yield and quality of medicinal and aromatic plants since its deficiency may cause serious growth harms and yield losses. Egypt suffers from a scarcity of water, so each drop should be preserved. Therefore, the objective of the present study was to determine the suitable irrigation treatment (120, 100 and 80% ETo (evapotranspiration) and humic acid amounts (control), 1.0, 1.5 and 2.0 cm/L) that attain the highest growth, yield and essential oil of geranium (Pelargonium graveolens L. Herit Aiton) under surface irrigation in clay soil at El Kanater El Khairiya. Results showed that humic acid alleviated the deteriorative effect of water deficiency, where plants irrigated with 120% ETo and treated with 2.0 cm/L humic acid improved the growth characters in terms of plant height, number of branches, fresh, dry weights and volatile oil yield. While, the highest volatile oil percentage and proline content were recorded at 80% ETo with humic acid at 2.0 cm/L treatment during the two growing seasons. Results also showed that the applied irrigation water under 120% ETo treatment was 7192 m3/fed averaged over the two growing seasons attained the highest yield. The highest values of water use efficiency and water productivity were 14.1 and 10.0 averaged over the two growing seasons attained under 80% ETo and application of 2.0 cm/L humic acid. Thus, it can be concluded that the required irrigation water for geranium is under 120% ETo. However, under water deficiency, 80% ETo and 2.0 cm/L humic acid could be applied, which increase geranium yield by 24%, compared to the 120% ETo treatment averaged over the two growing seasons.

Environmental considerations for wastewater reuse in agriculture

1996 ◽  
Vol 33 (10-11) ◽  
pp. 345-353 ◽  
Author(s):  
Saqer S. Al Salem
Keyword(s):  
Middle East ◽  
Adverse Effects ◽  
Irrigation Water ◽  
Water Demand ◽  
Potable Water ◽  
Wastewater Reuse ◽  
Water Deficiency ◽  
Appropriate Treatment ◽  
Environmental Considerations ◽  
Socioeconomic Benefits

The water demand in the Middle East is growing very rapidly. The portion of the quantity of the potable water is increasing on the account of the irrigation water and most of the countries will face water deficiency. A reliable way to secure the required water for irrigation is by collecting and reclaiming each drop of water used in the cities to be reused. To guarantee and safeguard hygienic standards and have no adverse effects on the environment must be given the highest priority. The paper discusses in detail the pollutants, their effect, and their way of influence. The on-site reuse and its advantages and the aspects that must be evaluated to decide the suitability of treated water were presented besides appropriate treatment for wastewater reuse and its guidelines. The Jordanian experience in the field of wastewater reuse in agriculture is discussed, and the socioeconomic benefits to community are illustrated.

scholarly journals ÁCIDO ASCÓRBICO, UMA ALTERNATIVA PARA MINIMIZAR OS EFEITOS DA DEFICIÊNCIA HÍDRICA EM RABANETE

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 79-91
Author(s):  
Osvaldir Feliciano Dos Santos ◽  
FERNANDO BROETTO ◽  
DARIANE PRISCILA FRANCO DE OLIVEIRA ◽  
ÍCARO MONTEIRO GALVÃO ◽  
MARA LÚCIA CRUZ DE SOUZA ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Water Stress ◽  
Experimental Design ◽  
Raphanus Sativus ◽  
Foliar Application ◽  
Photosynthetic Parameters ◽  
Physiological Effects ◽  
Water Deficiency ◽  
Central Hypothesis ◽  
Water Depths

ÁCIDO ASCÓRBICO, UMA ALTERNATIVA PARA MINIMIZAR OS EFEITOS DA DEFICIÊNCIA HÍDRICA EM RABANETE     OSVALDIR FELICIANO DOS SANTOS1; FERNANDO BROETTO2; DARIANE PRISCILA FRANCO DE OLIVEIRA3; ÍCARO MONTEIRO GALVÃO4; MARA LÚCIA CRUZ DE SOUZA5 E JOSIANA JUSSARA NAZARÉ BASÍLIO6   1Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas FCA/UNESP, Botucatu / SP – Brasil. CEP: 18610-034, [email protected] 2Departamento de Química e Bioquímica, Instituto de Biociências, IB/UNESP, Botucatu / SP – Brasil. CEP: 18618-000, [email protected]. 3Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas FCA/UNESP, Botucatu / SP – Brasil. CEP: 18610-034, [email protected]. 4Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas FCA/UNESP, Botucatu / SP – Brasil. CEP: 18610-034, [email protected]. 5Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas FCA/UNESP, Botucatu / SP – Brasil. CEP: 18610-034, [email protected]. 6Instituto de Ciências Agrárias ICA/UFMG, Montes Claros / MG – Brasil. CEP: 39404-547, [email protected]     1 RESUMO   Neste ensaio objetivou-se avaliar os efeitos fisiológicos do cultivo de rabanete sob diferentes lâminas de água, simulando a deficiência hídrica (DH). A hipótese central do ensaio seria identificar se a aplicação foliar exógena de ácido ascórbico atenuaria os efeitos fisiológicos dessa deficiência. O delineamento experimental foi em blocos ao acaso em esquema de parcelas subdivididas. Aplicou-se duas tensões de água no solo (10 e 30 kPa) e nas subparcelas, cinco concentrações de ácido ascórbico em solução aquosa (0, 250, 500, 750 e 1000 ppm) com quatro repetições. Verificou-se que a DH alterou os padrões de parâmetros fotossintéticos sendo que, a aplicação foliar de ácido ascórbico promoveu incremento significativo destas variáveis principalmente quando as plantas estavam submetidas ao estresse. Em relação aos tratamentos com a vitamina, maiores valores de taxa fotossintética foram obtidos com a aplicação de 675,8 e 837,3 ppm, nas tensões de 10 e 30 kPa respectivamente aos 30 dias após a emergência (DAE). Com base nos resultados, conclui-se que a aplicação de ácido ascórbico apresenta potencial para atenuar os efeitos da DH em plantas de rabanete.   Palavras-chave: Raphanus sativus, vitaminas, estresse hídrico, fotossíntese.     SANTOS, O. F.; BROETTO, F.; OLIVEIRA, D. P. F.; GALVÃO, I. M.; SOUZA, M. L. C.; BASÍLIO, J. J. N. ASCORBIC ACID, AN ALTERNATIVE TO MINIMIZE THE EFFECTS OF WATER DEFICIENCY IN RADISH           2 ABSTRACT   The aim of this study was to evaluate the physiological effects of radish cultivation under different water depths, simulating water deficiency (WD). The central hypothesis of the assay was to assess whether the exogenous foliar application of ascorbic acid could attenuate the physiological effects of this deficiency. The experimental design was a randomized complete block in subdivided plots. Two soil water potentials (10 and 30 kPa) were applied on plots, and the different concentrations of ascorbic acid (0, 250, 500, 750 and 1000 ppm) on the subplots, with four replications. It was verified that WD changes the patterns of photosynthetic parameters, and that the foliar application of ascorbic acid promoted a significant increase of these variables, especially when plants were submitted to stress. With regard to treatments with the vitamin, higher values ​​of photosynthetic rate were obtained with the application of 675.8 and 837.3 ppm, in the tensions of 10 and 30 kPa respectively 30 days after emergency (DAE). Based on the results, it was concluded that the application of ascorbic acid has potential to mitigate the physiological effects of WD on radish plants.   Keywords: Raphanus sativus, vitamins, water stress, photosynthesis.

Sign in / Sign up

Export Citation Format

Share Document