Chemical Composition and Plant Growth of Centaurea raphanina subsp. mixta Plants Cultivated under Saline Conditions

The aim of this report was to study the effect of salinity (control: 2dS/m, S1: 4 dS/m and S2: 6 dS/m) and harvest time (first harvest on 9 May 2018 and second harvest on 19 April 2018) on the growth and the chemical composition of Centaurea raphanina subsp. mixta plants. The plants of the first harvest were used for the plant growth measurements (fresh weight and moisture content of leaves, rosette diameter, number and thickness of leaves), whereas those of the second harvest were not used for these measurements due to the flowering initiation, which made the leaves unmarketable due to their hard texture. The results of our study showed that C. raphanina subsp. mixta plants can be cultivated under mild salinity (S1 treatment) conditions without severe effects on plant growth and yield, since a more severe loss (27.5%) was observed for the S2 treatment. In addition, harvest time proved to be a cost-effective cultivation practice that allows to regulate the quality of the final product, either in edible form (first harvest) or for nutraceutical and pharmaceutical purposes as well as antimicrobial agents in food products. Therefore, the combination of these two agronomic factors showed interesting results in terms of the quality of the final product. In particular, high salinity (S2 treatment) improved the nutritional value by increasing the fat, proteins and carbohydrates contents in the first harvest, as well as the tocopherols and sugars contents (S1 and S2 treatments, respectively) in the second harvest. In addition, salinity and harvest time affected the oxalic acid content which was the lowest for the S2 treatment at the second harvest. Similarly, the richest fatty acid (α-linolenic acid) increased with increasing salinity at the first harvest. Salinity and harvest time also affected the antimicrobial properties, especially against Staphylococcus aureus, Bacillus cereus and Trichoderma viride, where the extracts from the S1 and S2 treatments showed high effectiveness. In contrast, the highest amounts of flavanones (pinocembrin derivatives) were detected in the control treatment (second harvest), which was also reflected to the highest antioxidant activity (TBARS) for the same treatment. In conclusion, C. raphanina subsp. mixta plants seem to be tolerant to medium salinity stress (S1 treatment) since plant growth was not severely impaired, while salinity and harvesting time affected the nutritional value (fat, proteins, and carbohydrates) and the chemical composition (tocopherols, sugars, oxalic acid, fatty acids), as well as the bioactive properties (cytotoxicity and antimicrobial properties) of the final product.

Download Full-text

The Effect of Nitrogen Fertigation and Harvesting Time on Plant Growth and Chemical Composition of Centaurea raphanina subsp. mixta (DC.) Runemark

Molecules ◽

10.3390/molecules25143175 ◽

2020 ◽

Vol 25 (14) ◽

pp. 3175 ◽

Cited By ~ 4

Author(s):

Spyridon A. Petropoulos ◽

Ângela Fernandes ◽

Maria Inês Dias ◽

Carla Pereira ◽

Ricardo C. Calhelha ◽

...

Keyword(s):

Chemical Composition ◽

Plant Growth ◽

Nutritional Value ◽

Antimicrobial Properties ◽

Control Treatment ◽

Cytotoxic Effects ◽

Harvesting Time ◽

Nitrogen Levels ◽

Bioactive Properties ◽

Varied Response

The aim of the present study was to evaluate the effect of nitrogen fertigation (0, 200, 400, and 600 ppm of total nitrogen) and harvesting time (9 March 2018 and 19 April 2018) on the plant growth, chemical composition, and bioactive properties of Centaurea raphanina subsp. mixta plants. The highest yield of fresh leaves was observed for the treatment of 200 ppm of N without compromising nutritional value. The increasing nitrogen levels resulted in an increase of α- and total tocopherols and sugars content, especially in the second harvest for tocopherols and in the first harvest for sugars. Similarly, total organic acids and oxalic acid content increased with increasing nitrogen levels in both harvests, while fatty acids composition had a varied response to the tested factors. Pinocembrin neohesperidoside and pinocembrin acetyl neohesperidoside isomer II were the most abundant phenolic compounds with the highest content being observed in the control treatment of the first and second harvest, respectively. The highest antioxidant activity was observed for the control and the 600 ppm treatments of the second harvest for the OxHLIA and TBARS assays, respectively, probably due to the high content of pinocembrin acetyl neohesperidoside isomer II and α-tocopherol, respectively. Finally, cytotoxic effects and antimicrobial properties showed a varied response depending on the treatment. In conclusion, C. raphanina subsp. mixta has low requirements of nitrogen to achieve the highest yield, while a varied response to the tested fertigation treatments and harvesting time was observed in terms of the chemical composition and the bioactive properties.

Download Full-text

Determination of Relationship between Chemical Composition of Electrolyte and Surface Sample Quality

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.669.150 ◽

2015 ◽

Vol 669 ◽

pp. 150-157

Author(s):

Peter Michal ◽

Alena Vagaská ◽

Miroslav Gombár

Keyword(s):

Sodium Chloride ◽

Chemical Composition ◽

Oxalic Acid ◽

Boric Acid ◽

Oxide Layer ◽

Surface Finish ◽

Chemical Factors ◽

Substrate Sample

Paper tracks experimentally confirmed relationship between chemical composition of electrolyte and resulting surface finish quality of created oxide layer during the process of anodic oxidation of aluminium. Examined chemical factors were: concentrations of sulphuric acid, oxalic acid, boric acid and sodium chloride. Aggressive effects of electrolyte were chosen as indicator of resulting layer quality – presence and extent of etching of used substrate sample.

Download Full-text

IMPACT OF PLANT GROWTH INHIBITORS ON THE GROWTH AND YIELD OF SORGHUM

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v52i6.1484 ◽

2021 ◽

Vol 52 (6) ◽

pp. 1431-1440

Author(s):

N. M. Abood ◽

E. M. SHALAL ◽

M. I. HAMDAN

Keyword(s):

Plant Growth ◽

Dry Matter ◽

Agricultural Research ◽

Block Design ◽

Growth And Yield ◽

Control Treatment ◽

Research Station ◽

Dry Matter Yield ◽

Growth Inhibitors ◽

Plant Growth Inhibitors

Field experiment was carried out during the spring and fall seasons of 2019 at the Abu Ghraib Research Station of the Agricultural Research Office/ Ministry of Agriculture, was aimed to investigate the effect of plant growth inhibitors on growth and yield of several sorghum varieties .Randomized Complete Block Design within split plot arrangement with three replications was used. The main plot consists of three growth inhibitors (Cycocel, Ethiphon, and Mebiquat), which were added at stages six and eight leaf stage, in addition to the control treatment (distilled water only), the sub plot was included three cultivars (Mabrouk, Buhooth 70 and Giza 113). The results showed in both seasons significant interaction between cultivars and growth inhibitors in most of the studied traits. The plants of the variety Giza 113 sprayed with Ethiphon recorded the lowest period of reaching physiological maturity, the highest average dry matter yield, and the highest weight of 1000 grains (89.00 days, 17.32 ton ha-1, and 39.33 gm) respectively. The same variety recorded the highest content of chlorophyll in the leaves and the highest grain yield due to the effect of Mebiquat (49.50 spad, 3.93 ton ha-1. The cultivar Buhooth 70 with the effect of Cycocel achieved the highest average of dry matter yield of 33.27 ton ha-1.

Download Full-text

Improvement Growth, Yield, and Seed Quality of Pea Plants Using Glass Fertilizers and Bio-Fertilizers.

10.21203/rs.3.rs-634380/v1 ◽

2021 ◽

Author(s):

Eman G. Sayed ◽

Mona A. Ouis

Keyword(s):

Plant Growth ◽

Rhizobium Leguminosarum ◽

Field Experiments ◽

Seed Quality ◽

Growth Yield ◽

Control Treatment ◽

Chemical Fertilizers ◽

Yield Attributes ◽

The Impact

Abstract A new glass fertilizer (GF) system of main composition 60P2O5.30K2O.3.5ZnO. 3.5MnO.3Fe2O3 was developed in response to the needs of pea plants with bio-fertilizers (Rhizobium leguminosarum. Bv.vicieae, Bacillus megaterium var phosphaticum, Bacillus circulans).GF was prepared by the traditional melt quenching technique at 1150°C. Characterization of prepared system was done using FTIR spectra before and after immersion in a simulated actual agriculture medium like 2% citric acid and distilled water. During two winter seasons, two successful field experiments were conducted at Cairo University's Eastern Farm to determine the impact of chemical, glass, and bio-fertilizers on plant growth, yield attributes, and seed quality of pea plant. Control treatment were without any addition of recommended chemical fertilizers and other treatments were full dose of recommended chemical fertilizers (100%RDF), glass fertilizers at rate 60 kg fed− 1, Glass fertilizers at rate30 kg fed− 1, 50% RDF ,100%RDF + bio-fertilizers, Glass fertilizers at rate 60 kg fed− 1 + bio-fertilizers, glass fertilizers at rate 30 kg fed− 1+ bio-fertilizers, 50%RDF + bio-fertilizers. Plots received 60 kg fed− 1 glass fertilizers + bio-fertilizers show the highest significant increment in plant growth, number and weight of pods plant− 1, number of grain pods− 1, grain yield, biological yield, P%, k% in pea leaves and quality of pea seeds compared with plots without any addition (control) in both seasons.

Download Full-text

EFFECT OF FOLIAR APPLICATION OF VERMIWASH ON GROWTH AND QUALITY OF BRINJAL

Journal of Wastes and Biomass Management ◽

10.26480/jwbm.01.2021.31.34 ◽

2020 ◽

Vol 3 (1) ◽

pp. 31-34

Author(s):

M. Yasmin ◽

M.S. Rahman ◽

M.A. Rahman ◽

F.S. Shikha ◽

M.K. Alam

Keyword(s):

Agricultural Research ◽

Foliar Application ◽

Foliar Spray ◽

Growth Yield ◽

Nutrient Content ◽

Growth And Yield ◽

Control Treatment ◽

Research Station ◽

Water Control

The experiment was conducted at Regional Agricultural Research Station (RARS), Jamalpur, Bangladesh during the period of 2019-2020 and 2020-2021 to investigate the effect of vermiwash on growth, yield and quality of brinjal and to find out suitable foliar dose of vermiwash for optimizing the yield of brinjal. There were five treatments comprising T1= Chemical fertilizer (CF) + foliar spray of distilled water (control), T2 = CF + foliar spray of 10% vermiwash, T3 = CF + foliar spray of 20% vermiwash, T4 = CF + foliar spray of 30% vermiwash and T5= CF + foliar spray of 40% vermiwash. Results revealed that, vermiwash treated brinjal plants showed better growth and yield parameters than the control plants. The highest average brinjal fruit yield (29.99 t ha-1) was found in T3 treatment i.e., foliar spray of 20% concentration of vermiwash and the lowest (26.35 t ha-1) came from control. On the other hand, nutritional quality (moisture content, TSS, β carotene and nutrient content) were seen to be higher in vermiwash treated treatment compared to control treatment. The study suggests that, 20% concentration of vermiwash could be used as effective foliar spray for eco-friendly and higher yield of brinjal.

Download Full-text

Nutritional Evaluation of Beetroots (Beta vulgaris L.) and Its Potential Application in a Functional Beverage

Plants ◽

10.3390/plants9121752 ◽

2020 ◽

Vol 9 (12) ◽

pp. 1752

Author(s):

Eman Abdo ◽

Sobhy El-Sohaimy ◽

Omayma Shaltout ◽

Ahmed Abdalla ◽

Ahmed Zeitoun

Keyword(s):

Chemical Composition ◽

Extraction Method ◽

Nutritional Value ◽

Total Phenolics ◽

Research Work ◽

Calcium Content ◽

Beetroot Juice ◽

Bioactive Components ◽

Good Source

Beetroot is a good source of minerals, fibers, and bioactive components. The present research work was conducted to evaluate the nutritional quality of beetroots (juice, peels, leaves and pomace) enhancing the extracted bioactive components, and developing a functional probiotic beverage. Chemical composition and minerals content of beetroot parts were estimated. The bioactive components were extracted by instant extraction method (IEM) and overnight extraction method (at −20 °C) (OEM) to determine total phenolics, flavonoids, and DPPH inhibition ratio. The extracted beetroot juice was mixed with milk for valorization of the beverage nutritional value and fermented with LA-5 and ABT-5 cultures to create a novel functional beverage. Chemical composition, minerals content, and bioactive components of beverages were estimated. The leaves exhibited the highest calcium content (1200 mg/100 g). Juice showed the highest amount of all minerals except for calcium and magnesium. Overnight extraction method (OEM) increased the antioxidant activity in peels and stems. Natural juice exhibited the highest activity compared to extracts. Fermentation of beet-milk beverage with LA-5 and ABT-5 cultures enhanced the beverage taste, flavor, and antioxidant capacity. Beetroot wastes and juice comprise a valuable nutritional source. Fermentation improved the nutritional value of beetroot and the acceptability of the product.

Download Full-text

Vermiculture in Greenhouse Plants, Field Crop Production, and Hydroponics

Oxford Research Encyclopedia of Environmental Science ◽

10.1093/acrefore/9780199389414.013.295 ◽

2019 ◽

Author(s):

Norman Q. Arancon ◽

Zachary Solarte

Keyword(s):

Plant Growth ◽

Crop Production ◽

Raw Materials ◽

Organic Amendments ◽

Careful Consideration ◽

Organic Wastes ◽

Growth And Yield ◽

Economic Activities ◽

Pests And Diseases

Vermiculture is the art, science, and industry of raising earthworms for baits, feeds, and composting of organic wastes. Composting through the action of earthworms and microogranisms is commonly referred to as vermicomposting. Vermiculture is an art because the technology of raising earthworms requires a comprehensive understanding of the basic requirements for growing earthworms in order to design the space and the system by which organic wastes can be processed efficiently and successfully. It is a science because the technology requires a critical understanding and consideration of the climatic requirements, nutritional needs, growth cycles, taxonomy, and species of earthworms suitable for vermicomposting in order to develop a working system that supports earthworm populations to process successfully the intended organic wastes. The nature of the organic wastes also needs to be taken into careful consideration, especially its composition, size, moisture content, and nutritional value, which will eventually determine the overall quality of the vermicomposts produced. The quality of organic wastes also determines the ability of the earthworms to consume and process them, and the rate by which they turn these wastes into valuable organic amendments. The science of vermiculture extends beyond raising earthworms. There are several lines of evidence that vermicomposts affect plant growth significantly. Vermiculture is an industry because it has evolved from a basic household bin technology to commercially scaled systems in which economic activities emanate from the cost and value of obtaining raw materials, the building of systems, and the utilization and marketing of the products, be they in solid or aqueous extract forms. Economic returns are carefully valued from the production phase to its final utilization as an organic amendment for crops. The discussion revolves around the development of vermiculture as an art, a science, and an industry. It traces the early development of vermicomposting, which was used to manage organic wastes that were considered environmentally hazardous when disposed of improperly. It also presents the vermicomposting process, including its basic requirements, technology involved, and product characteristics, both in solid form and as a liquid extract. Research reports from different sources on the performance of the products are also provided. The discussion attempts to elucidate the mechanisms involved in plant growth and yield promotion and the suppression of pests and diseases. Certain limitations and challenges that the technology faces are presented as well.

Download Full-text

Phytochemical Composition and Nutritional Value of Pot-Grown Turnip-Rooted and Plain and Curly-Leafed Parsley Cultivars

Agronomy ◽

10.3390/agronomy10091416 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1416 ◽

Cited By ~ 2

Author(s):

Ângela Fernandes ◽

Nikolaos Polyzos ◽

Spyridon A. Petropoulos ◽

José Pinela ◽

Elizandra Ardohain ◽

...

Keyword(s):

Fatty Acids ◽

Linoleic Acid ◽

Chemical Composition ◽

Plant Growth ◽

Malic Acid ◽

Mediterranean Region ◽

Nutritional Value ◽

Linoleic Acid Content ◽

Total Sugars ◽

Phytochemical Composition

In the present study plant growth, nutritional value and chemical composition of leaves from twenty-five plain-leafed, curly-leafed and turnip-rooted parsley cultivars were evaluated. Total fresh yield was higher for the plain-leafed cv. Rialto Bejo: 192 ± 11 g/pot, while significant differences were observed between the three types in the nutritional parameters, except for the carbohydrates content. The most abundant organic acid was malic acid (5.22–6.88 g/100 g dw), while the total sugars content did not differ significantly among the tested cultivar types. α-tocopherol was the major tocopherol detected in amount that ranged between 14.76–30.32 mg/100 g dw. The main fatty acids were α-linolenic and linoleic followed by palmitic acid, while only linoleic acid content being different among the cultivar types. In conclusion, the existing diversity in the parsley genotypes could be valorised to increase the agrobiodiversity in the broader Mediterranean region through the introduction of less cultivated curly-leafed and turnip-rooted types.

Download Full-text

Exogenous Application of Amino Acids Improves the Growth and Yield of Lettuce by Enhancing Photosynthetic Assimilation and Nutrient Availability

Agronomy ◽

10.3390/agronomy9050266 ◽

2019 ◽

Vol 9 (5) ◽

pp. 266 ◽

Cited By ~ 12

Author(s):

Shumaila Khan ◽

Hongjun Yu ◽

Qiang Li ◽

Yinan Gao ◽

Basheer Noman Sallam ◽

...

Keyword(s):

Amino Acids ◽

Plant Growth ◽

Growth And Yield ◽

Chlorophyll Contents ◽

Plant Parts ◽

Yield And Quality ◽

Plant Area ◽

Butterhead Lettuce ◽

Photosynthetic Assimilation

As natural plant growth stimulators, amino acids are widely used to improve the yield and quality of crops. Several studies have illustrated the effects of different amino acids on lettuce plant parts. However, the effects of applying single amino acids on root growth remain elusive. The objective of this study was to evaluate the effect of root application of L-methionine on the growth of lettuce. In this study, two successive experiments on butterhead lettuce were conducted under hydroponic conditions. Three amino acids, L-methionine (20 mg/L), L-glycine (210 mg/L), and L-tryptophan (220 mg/L), were applied separately. L-methionine significantly increased the growth performance by 23.60%, whereas growth using L-tryptophan and L-glycine decreased by 98.78% and 27.45%, respectively. Considering the results of the first experiment, a second experiment was established with different concentrations of L-methionine (2200 mg/L, 220 mg/L, 22 mg/L, 2.2 mg/L, 0.2 mg/L, and 0.02 mg/L). The plants were allowed to grow for four weeks. Leaf width, plant area, leaf area, chlorophyll contents, etc., were evaluated. The results show that plant growth significantly improved by applying L-methionine at the lowest concentrations of 0.2 mg/L and 0.02 mg/L, which can, therefore, improve hydroponic production of lettuce and, accordingly, human nutrition.

Download Full-text

578 How Much Cover Crop Affects Plant Growth and Yield Components in `Selva' and `Totem' Strawberry (Fragaria × ananassa Duch.) in the Establishment Year

HortScience ◽

10.21273/hortsci.34.3.546c ◽

1999 ◽

Vol 34 (3) ◽

pp. 546C-546

Author(s):

Braja B. Datta ◽

Ray D. William

Keyword(s):

Plant Growth ◽

Cover Crops ◽

Cover Crop ◽

Block Design ◽

Total Yield ◽

Growth And Yield ◽

Control Treatment ◽

Shoot Biomass ◽

Treatment Comparison ◽

Significant Difference

Field experiment on production systems of `Selva' day-neutral and `Totem' June-bearing strawberry was established in 1995 on the spring-killed cover crop mulched plots using randomized complete-block design. Seven soil cover treatments consisted of `Wheeler' rye (Secale cereale) and `Micah' and `Steptoe' barley (Hordium vulgare), `Micah' residue applied on soil surface, a wedge of perlite (artificial medium) placed next to strawberry row, perlite with `Wheeler' rye, and no treatment were used. During the early summer, cover crops were replanted between strawberry rows and mowed down after 6 weeks. In both cultivars, plant growth doubled during mid-summer, and `Micah'on surface produced better growth than the growth in other treatments. No significant difference was found on CO2 assimilation rate (mmol·m–2·s–1), leaflet length, and number of leaves and runners among treatments (P ≥ 0.1). Yield of `Totem' was ignored during the establishment year. In `Selva', `Micah' residue on surface produced 36% more crowns per plant and the greatest total yield than that of any other treatment. `Micah' on surface produced 50% more shoot biomass and 45% greater yield compared to `Micah' barley planted in the plot. Total `Selva' yield was 61% greater in perlite treatment than the yield in perlite with `Wheeler' rye and 31% greater than the control treatment. Comparison of `Selva' strawberry total yield and average fruit production between cover crops vs. control treatment using non-orthogonal contrast indicated no significant difference might suggests no detrimental interaction between cover crops and strawberry.

Download Full-text