scholarly journals Pilot Cultivation of the Vulnerable Cretan Endemic Verbascum arcturus L. (Scrophulariaceae): Effect of Fertilization on Growth and Quality Features

2021 ◽  
Vol 13 (24) ◽  
pp. 14030
Author(s):  
Konstantinos Paschalidis ◽  
Dimitrios Fanourakis ◽  
Georgios Tsaniklidis ◽  
Vasileios A. Tzanakakis ◽  
Fotis Bilias ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nutrient Management ◽  
Foliar Application ◽  
Nutrient Content ◽  
Dry Mass ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Growth Physiology ◽  
Local Endemic ◽  
First Time

The domestication of wild-growing plants, including cultivation and fertilization protocols, is able to alleviate the ecological risks posed by the uncontrolled harvesting of range-restricted local endemic plants. In this field study focused on Verbascum arcturus, a vulnerable local endemic of Crete (Greece), the effect of two kinds of fertilization applied by two methods (foliar/root) was investigated. The foliar application included conventional or integrated nutrient management (INM) fertilization. Root application included the application of conventional fertilizers, biostimulants, or INM with biostimulants. Several properties of plant growth, physiology and nutrition were determined. The results showed that fertilization treatment affected neither leaf color and shape nor plant growth, morphology, dry mass partitioning or nutrient content. However, both kinds of foliar-applied fertilization enhanced Zn and B in leaves and soil-applied biostimulant increased leaf Ca. Considering both chlorophyll and antioxidant compounds’ content, foliar application of the INM fertilizers, as well as soil application of the conventional fertilizers or biostimulants, could be considered as accepted options. This study reports for the first time an assessment of the total phenolic and flavonoids content evidenced in V. arcturus and encourages the use of fertilization in promoting the herbal antioxidant profile without compromising visual quality or yield. The findings of this study could be considered as a documented contribution toward the sustainable exploitation of V. arcturus.

scholarly journals Pre-Harvest Foliar Application of Mineral Nutrients to Retard Chlorophyll Degradation and Preserve Bio-Active Compounds in Broccoli

Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 711
Author(s):  
Mohamed M. El-Mogy ◽  
Mohamed Abdel M. Wahab ◽  
Mohamed B. I. El-Sawy ◽  
Aditya Parmar
Keyword(s):  
Plant Growth ◽  
Shelf Life ◽  
Foliar Application ◽  
Growth Parameters ◽  
Management Practice ◽  
Nutrient Content ◽  
Mineral Nutrients ◽  
Postharvest Quality ◽  
Total Phenolic

Foliar application of micronutrients has become a common farm management practice to increase the overall yield of various crops. However, the effects of foliar fertilization on shelf life and postharvest quality of the crops are rather under-researched. The aim of this field experiment was to evaluate the effect of foliar application of individual mineral nutrients (calcium (Ca), zinc (Zn), manganese (Mn), and iron (Fe) on pre and postharvest quality of broccoli. The broccoli plants were subjected to single foliar sprays of either Ca, Fe, Zn, or Mn, which was repeated four times during plant growth at a 1 g/kg concentration. Once harvested, the broccoli heads were refrigerated at 4 °C for 28 days. Our results indicated that foliar application of Ca, Zn, Mn, and Fe did not have a significant effect on plant growth parameters, apart from enhancing Soil Plant Analysis Development (SPAD) chlorophyll meter values. However, during postharvest, foliar application treatment showed a positive response on weight loss during storage and reduction in yellowing of the broccoli heads. Foliar treatments increased the concentration of Nitrogen (N), Phosphorus (P), Ca, Zn, Mn and Fe significantly in the broccoli head tissue. Total chlorophyll content, total phenolic compound, ascorbic acid, peroxidase activity, glucoraphanin and glucobrassicin and flavonoids were significantly increased by all foliar treatments. Crude protein content and sulforaphane were enhanced by Ca and Mn treatments. Overall, foliar application of the investigated mineral nutrients may prove beneficial in improving the shelf-life and nutrient content of broccoli during postharvest handling and storage.

scholarly journals Pilot Cultivation of the Local Endemic Cretan Marjoram Origanum microphyllum (Benth.) Vogel (Lamiaceae): Effect of Fertilizers on Growth and Herbal Quality Features

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 94
Author(s):  
Dimitrios Fanourakis ◽  
Konstantinos Paschalidis ◽  
Georgios Tsaniklidis ◽  
Vasileios A. Tzanakakis ◽  
Fotis Bilias ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Foliar Application ◽  
Nutrient Content ◽  
Natural Ecosystems ◽  
Endemic Plant ◽  
Nutrient Contents ◽  
Leaf Chlorophyll ◽  
Antioxidant Compound ◽  
Local Endemic ◽  
Leaf Chlorophyll Fluorescence

Wild phytogenetic resources are threatened by overexploitation. This pressure on species and natural ecosystems can be alleviated in part by recruiting and domesticating wild-growing species under pilot cultivation with tailor-made fertilization schemes. This study focused on the pilot cultivation of Origanum microphyllum—a critically endangered local endemic plant of Crete, Greece—investigating the effect of conventional and integrated nutrient management (ΙΝΜ) fertilizers by foliar or root application and biostimulant. Above-ground biomass together with leaf chlorophyll fluorescence and color (SPAD meter, DA meter, Chroma Meter) were determined. Leaf chlorophyll, antioxidant compound (carotenoids, phenols, flavonoids), and nutrient contents were also assessed. The results showed that fertilization did not significantly affect plant growth and leaf nutrient content. Root fertilization was associated with greener leaves compared to foliar. The same trend was generally evident for antioxidant compound content. The small size of leaves may have impeded the efficiency of the foliar application. In conclusion, root application of conventional or INM fertilizers seems more suitable to promote visual quality and herbal antioxidant profile of O. microphyllum, than the foliar one.

scholarly journals Effect of different levels of humic acids on the nutrient content, plant growth, and soil properties under conditions of salinity

2011 ◽  
Vol 6 (No. 1) ◽  
pp. 21-29 ◽  
Author(s):  
H. Khaled ◽  
H.A. Fawy
Keyword(s):  
Plant Growth ◽  
Humic Substances ◽  
Humic Acids ◽  
Foliar Application ◽  
N Uptake ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Nutrient Content ◽  
Nutrient Elements ◽  
A Minor

In this study, the effects were investigated of salinity, foliar and soil applications of humic substances on the growth and mineral nutrients uptake of Corn (Hagein, Fardy10), and the comparison was carried out of the soil and foliar applications of humic acid treatments at different NaCl levels. Soil organic contents are one of the most important parts that they directly affect the soil fertility and textures with their complex and heterogenous structures although they occupy a minor percentage of the soil weight. Humic acids are an important soil component that can improve nutrient availability and impact on other important chemical, biological, and physical properties of soils. The effects of foliar and soil applications of humic substances on the plant growth and some nutrient elements uptake of Corn (Hagein, Fardy10) grown at various salt concentrations were examined. Sodium chloride was added to the soil to obtain 20 and 60mM saline conditions. Solid humus was applied to the soil one month before planting and liquid humic acids were sprayed on the leaves twice on 20<sup>th</sup> and 40<sup>th</sup> day after seedling emergence. The application doses of solid humus were 0, 2 and 4 g/kg and those of liquid humic acids were 0, 0.1 and 0.2%. Salinity negatively affected the growth of corn; it also decreased the dry weight and the uptake of nutrient elements except for Na and Mn. Soil application of humus increased the N uptake of corn while foliar application of humic acids increased the uptake of P, K, Mg,Na,Cu and Zn. Although the effect of interaction between salt and soil humus application was found statistically significant, the interaction effect between salt and foliar humic acids treatment was not found significant. Under salt stress, the first doses of both soil and foliar application of humic substances increased the uptake of nutrients.

scholarly journals Effects of Climate Temperature and Water Stress on Plant Growth and Accumulation of Antioxidant Compounds in Sweet Basil (Ocimum basilicum L.) Leafy Vegetable

Scientifica ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Asma Al-Huqail ◽  
Rehab M. El-Dakak ◽  
Marwa Nme Sanad ◽  
Reem H. Badr ◽  
Mohamed M. Ibrahim ◽  
...  
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Growth Parameters ◽  
Stress Conditions ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Chlorophyll Contents ◽  
Sweet Basil ◽  
Stress Markers ◽  
Response To Water

The effects of climate temperature and water stress on growth and several stress markers were investigated in sweet basil plants. Some growth parameters (shoot length and number of leaves) and photosynthetic chlorophyll contents were determined every two days during plant growth, and foliage leaf material was collected after 15 and 21 days of treatment. Both climate temperature and water stress inhibited sweet basil plant growth; especially, total chlorophyll levels were decreased significantly in response to high-temperature treatments. Under strong stresses, basil plants induced the synthesis and accumulation of glycine betaine (GB) as a secondary osmolyte, although at less content when compared with the proline content under the same stress conditions. Proline concentrations particularly increased in leaves of both basil stressed plants, accomplishing levels high enough to play a crucial role in cellular osmoregulation adjustment. Stress-induced accumulation of these antioxidant compounds was detected in sweet basil. Therefore, it appears that sweet basil-treated plants are able to synthesize antioxidant compounds under strong stress conditions. On the other hand, total sugar concentrations decreased in stress-treated basil plants. Both temperature and water stress treatments caused oxidative stress in the treated plants, as indicated by a significant increment in malondialdehyde (MDA) concentrations. An increase in total phenolic and flavonoid concentrations in response to water stress and a highly significant decrease in carotenoid concentrations in basil leaves were observed; flavonoids also increased under high climate temperature conditions.

scholarly journals Flavonoid Profiles of Two New Approved Romanian Ocimum Hybrids

Molecules ◽  
2020 ◽  
Vol 25 (19) ◽  
pp. 4573
Author(s):  
Fanica Balanescu ◽  
Maria Daniela Ionica Mihaila ◽  
Geta Cârâc ◽  
Bianca Furdui ◽  
Costel Vînătoru ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Phenolic Compounds ◽  
Methanolic Extract ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Flavonoid Content ◽  
Traditional Herbal Medicine ◽  
Risk Of Cancer ◽  
First Time ◽  
Phenolic And Flavonoid

Basil (Ocimum spp.) is a traditional herbal medicine abundant in antioxidants such as phenolic compounds. As part of a diet, this herb is proved to have some roles in decreasing the risk of cancer, and in the treatment of inflammation and neurodegenerative diseases. This study aims to explore the total phenolic and flavonoid content of two new basil hybrids growing in Romania, namely “Aromat de Buzau” (AB) and “Macedon” (MB). The antioxidant capacity of those two species was also analyzed by DPPH and cyclic voltammetry. Six different flavonoids, such as catechin (+), rutin, hyperoside, naringin, naringenin, and genistein, were separated, identified, and quantified by HPLC–DAD chromatography, for the first time, from romanian basil hybrids. The main flavonoid of the extracts was found to be naringin which is present in the highest amount (26.18 mg/kg) in “Aromat de Buzau” (O. basilicum) methanolic extract. These results suggest that dietary intake of these new hybrids can be a source of antioxidant compounds.

scholarly journals The Effect of Foliar Putrescine Application, Ammonium Exposure, and Heat Stress on Antioxidant Compounds in Cauliflower Waste

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 707
Author(s):  
Jacinta Collado-González ◽  
Maria Carmen Piñero ◽  
Ginés Otálora ◽  
Josefa López-Marín ◽  
Francisco M. del Amor
Keyword(s):  
Heat Stress ◽  
Thermal Stress ◽  
Heat Waves ◽  
Foliar Application ◽  
Pharmaceutical Preparations ◽  
Point Of View ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Short Term ◽  
Heat Effects

This work has been focused on the study of how we can affect the short heat stress on the bioactive compounds content. Some recent investigations have observed that management of nitrogen fertilization can alleviate short-term heat effects on plants. Additionally, the short-term heat stress can be also ameliorated by using putrescine, a polyamine, due to its crucial role in the adaptation of plants to heat stress Therefore, different NO3−/NH4+ ratios and a foliar putrescine treatment have been used in order to increase tolerance to thermal stress in order to take advantage of the more frequent and intense heat waves and make this crop more sustainable. So, other objective of this work is to make the cauliflower waste more attractive for nutraceutical and pharmaceutical preparations. Thus, the effect of a thermal stress combined with a 50:50 NO3−/NH4+ ratio in the nutrient solution, and the foliar application of 2.5 mM putrescine increased in the content of various sugars (inositol, glucose, and fructose), total phenolic compounds and polyamines, as well as in the antioxidant activity. The greatest accumulation of these compounds was observed in young leaves. Our results show from a physiological and agronomic point of view, that the foliar application of putrescine and the 50:50 NO3−/NH4+ treatment managed to alleviate the negative effects of the abiotic stress suffered at high temperature, yielding plants with higher antioxidant compounds content.

scholarly journals Enhanced plant nutrient use efficiency with PGPR and AMF in an integrated nutrient management system

2008 ◽  
Vol 54 (10) ◽  
pp. 876-886 ◽  
Author(s):  
A.O. Adesemoye ◽  
H.A. Torbert ◽  
J.W. Kloepper
Keyword(s):  
Plant Growth ◽  
Management System ◽  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Poultry Litter ◽  
Nutrient Content ◽  
Growth And Yield ◽  
Control Group ◽  
Integrated Nutrient Management ◽  
Microbial Inoculants

A 3 year field study was conducted with field corn from 2005 to 2007 to test the hypothesis that microbial inoculants that increase plant growth and yield can enhance nutrient uptake, and thereby remove more nutrients, especially N, P, and K from the field as part of an integrated nutrient management system. The field trial evaluated microbial inoculants, which include a commercially available plant growth-promoting rhizobacteria (PGPR), arbuscular mycorrhiza fungi (AMF), and their combination across 2 tillage systems (no-till and conventional till) and 2 fertilization regimes (poultry litter and ammonium nitrate). Data were collected on plant height, yield (dry mass of ears and silage), and nutrient content of corn grain and silage. In addition, nutrient content of soil was determined, and bioavailability of soil nutrient was measured with plant root simulator probes. Results showed that inoculants promoted plant growth and yield. For example, grain yields (kg·ha–1) in 2007 for inoculants were 7717 for AMF, 7260 for PGPR+AMF, 7313 for PGPR, 5725 for the control group, and for fertilizer were 7470 for poultry litter and 6537 for NH4NO3. Nitrogen content per gram of grain tissues was significantly enhanced in 2006 by inoculant, fertilizer, and their interactions. Significantly higher amounts of N, P, and K were removed from the plots with inoculants, based on total nutrient content of grain per plot. These results supported the overall hypothesis and indicate that application of inoculants can lead to reduction in the build up of N, P, and K in agricultural soils. Further studies should be conducted to combine microbial inoculants with reduced rates of fertilizer.

scholarly journals Prolonged Water Deficit Stress and Methyl Jasmonate-Mediated Changes in Metabolite Profile, Flavonoid Concentrations and Antioxidant Activity in Peppermint (Mentha × piperita L.)

2018 ◽  
Vol 47 (1) ◽  
pp. 70-80 ◽  
Author(s):  
Gholamreza ABDI ◽  
Majid SHOKRPOUR ◽  
Leila KARAMI ◽  
Sayed Alireza SALAMI
Keyword(s):  
Amino Acids ◽  
Plant Growth ◽  
Antioxidant Capacity ◽  
Methyl Jasmonate ◽  
Water Deficit ◽  
Foliar Application ◽  
Metabolite Profile ◽  
Mentha Piperita ◽  
Water Deficit Stress ◽  
Total Phenolic

Peppermint (Mentha × piperita L.) infusion is one of the main important sources of antioxidants. This antioxidant property can be enhanced by using elicitors and inducing abiotic stress. This study was conducted to evaluate the foliar application of Methyl Jasmonate (50 µM) and water deficit stress (no stress, mild stress and moderate stress as 100, 75 and 50% of field capacity, respectively) and their interactions on cultivated peppermint on plant growth, secondary metabolite and antioxidant capacity of infusions made under different treatment. Water deficit stress treatments increased flavonoid contents and total phenolic as well as antioxidant capacity significantly. Some phenolic compound such as luteolin, naringenin, coumaric acid, and quercetin were detected only in some drought and Methyl Jasmonate treatments. Also, fewer amino acids such as L-serine, Threonine, 4-aminobutiric acid, 5-oxo-L-proline and unsaturated fatty acids were identified. Also, foliar application of 50 µM Methyl Jasmonate treatment improved plant growth parameters and metabolite profile such as carbohydrates and amino acids in non-stress and stress conditions. Therefore, inducing water stress and applying MeJA is recommended to enhance the biologic properties of peppermint and improve bioactive compounds and the antioxidant capacity of peppermint infusions.

scholarly journals The regulation of growth parameters of potato microclones by jasmonic acid

2020 ◽  
Author(s):  
E. A. Mukhamatdinova ◽  
I. S. Kovtun ◽  
M. V. Efimova
Keyword(s):  
Plant Growth ◽  
Jasmonic Acid ◽  
Agar Medium ◽  
Growth Parameters ◽  
Dry Mass ◽  
Potato Plants ◽  
Murashige Skoog ◽  
First Time ◽  
Regulation Of Growth ◽  
Axial Organs

The microclones of potato (variety Lugovskoy) were grown on the modified Murashige-Skoog (MS) agar medium in the absence (control) or presence of JA at concentrations of 0.001, 0.1, and 10 µM. We evaluated plant growth parameters such as the length of the axial organs, the number of stolons, leaves, the area of the assimilating surface, and the wet and dry mass of aboveground and underground organs. For the first time, has been demonstrated, that jasmonic acid (0.1 and 10 µM) was showed a pronounced growth-stimulating effect on potato plants.

scholarly journals Продуктивність і технологічні якості коренеплодів буряка цукрового залежно від позакореневого внесення регулятора росту «Марс-1»

2013 ◽  
pp. 14-18
Author(s):  
С. В. Філоненко
Keyword(s):  
Plant Growth ◽  
Sugar Beet ◽  
Growth And Development ◽  
Foliar Application ◽  
Agricultural Crops ◽  
Plant Growth And Development ◽  
Yield And Quality ◽  
First Time ◽  
Modern Technologies

Регулятори росту і розвитку рослин стають важ-ливою складовою сучасних технологій вирощування сільськогосподарських культур. Автором вивчено закономірності впливу позакореневого внесення регу-лятора росту «Марс-1» на формування врожайності та якості коренеплодів буряка цукрового гібриду Іва-нівсько-Веселоподільський ЧС 84. Рекомендовано застосовувати «Марс-1» двічі: перший раз – у фазі чотирьох пар справжніх листків, другий – перед змиканням листя у міжряддях. Доза для кожного внесення – 0,8 л/га. Regulators of plant growth and development are an important part of modern technologies of agricultural crops. The author studied the regularities of foliar application of growth regulator “Mars -1” on the formation of yield and quality of sugar beet roots hybrid Ivanivsko-Veselopodilskyy - 84. It is recommended to apply “Mars-1” twice: the first time – in the phase of four pairs of true leaves, in the second – before closing the leaves between rows. The dose for each entry – 0,8 l / ha.

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