scholarly journals Enhancing the Productivity and Quality of Tomato using Magnetized Water and Humic Acid as Bio-stimulant Agents

2021 ◽  
Author(s):  
Amira A. Helaly
Keyword(s):  
Humic Acid ◽  
Growth Traits ◽  
Crop Productivity ◽  
Major Influence ◽  
Tomato Plants ◽  
Growing Seasons ◽  
Acid Addition ◽  
Magnetized Water ◽  
Magnetic Water

Background: Humic acid is a natural bio-stimulant, which has a major influence on growth and crop quality. Also, Magnetic water treatment enhances both crop productivity and quality, which leads to the efficient use of cultivated land by using water resources available for crop production. This study aims to determine the effects of magnetized water irrigation and application of humic acid with different concentrations as a bio-stimulation on tomato plants, Solanum Lycopersicon cv. Hybrid “86”.Methods: The experiment was conducted during the tow growing seasons of 2018 and 2019 at the Agricultural Experimental Station Farm at Abies region, Faculty of Agriculture, Alexandria University, Egypt. The experiment design was split-plot with three replications. Two irrigation water treatments (magnetized and non-magnetic water) were arranged in the main plots and four concentrations of humic acid (0, 1, 2 and 3 g L-1) were distributed over sub-plots.Result: The results showed that irrigation with magnetized water had a positive effect on the vegetative growth traits, yield and its components and the quality of tomato fruits parameters. There was also a clear desirable effect of humic acid addition with different concentrations, as the results indicated that the use of the highest concentration of humic acid (3 g L-1) reflected the highest values for all the studied traits. The results of the interaction between irrigation with magnetized water and application of humic acid showed that the best results and the highest values for all studied characters were recorded when using magnetic water (MW) combined with 3 g L-1 of humic acid (HA), without significant differences from the interaction treatment MW combined with 2 g L-1 HA for most traits. However, the two treatments combinations MW with 2 g L-1 HA and Non-MW with 3 g L-1 HA didn’t significant differ from each other for all studied characters at the two growing seasons. These results indicated that using the magnetic water with humic acid led to the possibility of reducing the amount of humic acid by one-third and enhances both crop productivity and quality of tomato plants. Generally, we can recommend using magnetized water irrigation with humic acid addition at concentration of 3.g L-1 or 2.g L-1 to enhance the productivity and quality of the tomato plant. 

scholarly journals Responses of tomato hybrid cultivars to soil application of humic acid under greenhouse conditions

2024 ◽  
Vol 84 ◽  
Author(s):  
M. M. Alenazi ◽  
M. M. Khandaker
Keyword(s):  
Humic Acid ◽  
Tomato Fruits ◽  
Soil Application ◽  
Physicochemical Quality ◽  
Positive Effects ◽  
Growing Seasons ◽  
Plant Soil ◽  
Tomato Cultivars ◽  
Vegetative And Reproductive Growth

Abstract Responses of three tomato (Lycopersicon esculentum Mill.) hybrids viz. 'Luanova', 'Savarona' and 'Tessera' to various doses (0, 0.5, 1.0, 1.5 and 2.0 g L-1) of soil application of humic acid (HA) were evaluated in terms of plant growth, productivity and quality of fruits, under greenhouse conditions, during 2011-12 and 2012-13. In addition to improved quality characteristics, higher values for yield and yield components were recorded for tomato fruits harvested from plants of 'Tessera' cultivar compared to those harvested from other hybrids tested, regardless of growing seasons. Plants from 'Luanova' cultivar were, however, earlier in fruiting with higher number of fruits per plant. Soil application of HA presented positive effects on yield and physicochemical quality of tomato fruits irrespective of the dose of HA and the cultivar investigated, in both seasons. Soil application of HA at higher dose 1.5 g L-1 exhibited better results in all the three tomato cultivars tested, in terms of their vegetative and reproductive growth, and significantly improved the physicochemical quality of their fruits. Conclusively, the tomato hybrid 'Tessera' was found suitable for cultivation under greenhouse conditions while soil application of aqueous solution of HA @ 1.5 g L-1 substantially resulted in higher production of quality tomato fruits.

Administrasi Hubungan Sekolah dan Masyarakat

2020 ◽  
Author(s):  
Fisma Janusuri
Keyword(s):  
Community Participation ◽  
Community Empowerment ◽  
Major Influence ◽  
Learning Achievement ◽  
Quality Of Learning ◽  
Good Schools ◽  
Education Process

Community empowerment in education is needed especially to support the implementation of good schools. The level of community participation in the education process in this school seems to have a major influence on the progress of the school, the quality of learning services in schools which will ultimately affect the progress and learning achievement of children in school.

scholarly journals Drought and Salinity in Citriculture: Optimal Practices to Alleviate Salinity and Water Stress

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1283
Author(s):  
Vasileios Ziogas ◽  
Georgia Tanou ◽  
Giasemi Morianou ◽  
Nektarios Kourgialas
Keyword(s):  
Agricultural Sector ◽  
Review Paper ◽  
Cell Metabolism ◽  
High Water ◽  
Crop Productivity ◽  
Fruit Tree ◽  
Key Factors ◽  
Negative Effect

Among the various abiotic stresses, drought is the major factor limiting crop productivity worldwide. Citrus has been recognized as a fruit tree crop group of great importance to the global agricultural sector since there are 140 citrus-producing countries worldwide. The majority of citrus-producing areas are subjected to dry and hot summer weather, limited availability of water resources with parallel low-quality irrigation water due to increased salinity regimes. Citrus trees are generally classified as “salt-intolerant” with high water needs, especially during summer. Water scarcity negatively affects plant growth and impairs cell metabolism, affecting the overall tree growth and the quality of produced fruit. Key factors that overall attempt to sustain and withstand the negative effect of salinity and drought stress are the extensive use of rootstocks in citriculture as well as the appropriate agronomical and irrigation practices applied. This review paper emphasizes and summarizes the crucial role of the above factors in the sustainability of citriculture.

scholarly journals Development and Yield Traits Indicate That the Constitutive Wound Response Phenotype of Prosystemin Overexpressing Tomato Plants Entails No Fitness Penalty

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1148
Author(s):  
Mariela Luna Martínez ◽  
Norma Martínez-Gallardo ◽  
Kena Casarrubias-Castillo ◽  
Simona M. Monti ◽  
Mariangela Coppola ◽  
...  
Keyword(s):  
Intrinsically Disordered Protein ◽  
Titratable Acidity ◽  
Peptide Hormone ◽  
Defense Responses ◽  
Crop Productivity ◽  
Photosynthetic Performance ◽  
Wound Response ◽  
Tomato Plants ◽  
Intrinsically Disordered ◽  
Environmentally Sound

Systemin is a peptide hormone that regulates the wound response in tomato plants. Consequently, the overexpression of its prosystemin (ProSys) precursor protein leads to a resource-demanding constitutive activation of tomato’s wound-response. According to the growth vs. defense resource allocation premise, ProSys overexpression should negatively affect the physiological fitness of tomato plants. The present study was performed to explore why the opposite effect was steadily observed, instead. It was based on the premise that a better understanding of this unexpected outcome could help establish improved wound and related defense responses without negatively affecting crop productivity. To this effect, an experimental strategy was deployed to measure various physiological, biochemical and molecular parameters associated with either development, productivity, defense or in combination in untransformed (WT) and ProSys overexpressing (ProSys-OE) tomato plants. Thus, the chlorophyll fluorescence data obtained from plants grown under greenhouse experiments indicated that photosynthetic performance was not affected in ProSys-OE plants which also grew 7–14% taller than WT plants. Moreover, they showed accelerated flowering and yielded fruits of increased size (7–16% taller and wider) and weight (16–58% heavier), with modified fruit quality in terms of firmness (28% higher), titratable acidity (27–32% higher) and chemical composition. These findings suggest two complementary possibilities: (i) systemin is able to modulate both the wound response and plant development through the activation of jasmonic acid biosynthesis and signaling, and (ii) ProSys, an intrinsically disordered protein, acts as a signaling hub to regulate development and defense programs. These results shed light on the understanding of this plant regulatory mechanism and further suggest that systemin/ProSys-based regulation is central to control the defense-development balance in tomato. This knowledge could eventually lead to improved and more environmentally sound agricultural production practices.

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