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Agronomy
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Agrochemistry and Application of Natural Products to Agricultural Research
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Agrochemistry and Application of Natural Products to Agricultural Research

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Agricultural Biosystem and Biological Engineering".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 997

Special Issue Editor

Prof. Dr. Mayker Lazaro Dantas Miranda

E-Mail Website
Guest Editor
Instituto Federal do Triângulo Mineiro, Campus Uberlândia Centro, Uberlândia 38064-790, Brazil
Interests: natural products; organic chemistry; essential oils; biologically active compounds; antimicrobial agentes; antiparasitic compounds
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to cordially invite you to contribute your valuable insights and innovative findings to our upcoming Special Issue of Agronomy entitled "Agrochemistry and Application of Natural Products to Agricultural Research". This Special Issue promises to be an exciting platform which will showcase groundbreaking research, novel discoveries, the use of natural products, and biological control agents in crop protection and the game-changing application of natural products.

By sharing your expertise, you will be contributing to the expansion of knowledge and the potential impact of natural products on critical challenges to agriculture.

To our readers, we promise an insightful collection of papers that explore the vast potential of nature to advance environmental well-being. This Special Issue aims to be a reference for researchers, practitioners, and policymakers who seek innovative solutions derived from natural sources.

Let us uncover the potential of natural products and pave the way for a healthier and more sustainable future.

With warm regards,

Prof. Dr. Mayker Lazaro Dantas Miranda
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plant extracts
  • essential oils
  • chemistry of natural compounds
  • bio-based agricultural products
  • biological control of plant diseases

Published Papers (2 papers)

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Research

14 pages, 2082 KiB  
Article
Green-Nano Manganese and Its Impact on the Growth, Yield, and Fruit Properties of Flame Seedless Grapes
by Adel M. Al-Saif, Rasha S. Abdel-Hak, Mohamed M. S. Saleh, Mohammed H. Farouk and Shimaa R. Hamed
Agronomy 2024, 14(7), 1464; https://doi.org/10.3390/agronomy14071464 (registering DOI) - 6 Jul 2024
Viewed by 187
Abstract
The present work aimed to evaluate green-nano manganese produced at the Microbial Biotechnology Department, National Research Centre, Egypt, and assess its impact on the growth, yield, and fruit properties of grapevines. To this end, two experiments were conducted. The first was microbiological, where [...] Read more.
The present work aimed to evaluate green-nano manganese produced at the Microbial Biotechnology Department, National Research Centre, Egypt, and assess its impact on the growth, yield, and fruit properties of grapevines. To this end, two experiments were conducted. The first was microbiological, where several incorporation strategies were utilized to enrich the yeast with manganese, as follows: (1) manganese was added to the liquid medium (non-growth phase), and (2) manganese was added after 24 h of incubation (growth phase). The results showed that the non-growth phase had a reduced possibility of medium contamination. The manganese concentration in the yeast cells was increased due to manganese sulfate in the medium. The manganese incorporation in yeast cells was 99.93% (1.205 × 105) higher than that of the medium at 0.0195 g/L of manganese. Although the concentration of manganese in the medium raised the optical density (OD) of the yeast cell biomass, manganese sulfate had no passive influence on it. The second experiment was horticultural, where Flame Seedless grapevines were sprayed with frozen and active fresh yeast enriched with manganese that resulted from the microbiological experiment. Grapevines were sprayed twice a year at 10 or 20 cm3/L, and the results were compared with those for the mineral and chelate forms. The results demonstrated that yeast extracts in both forms showed positive effects on grapevine. The most effective treatment with regard to growth, yield, and fruit properties was frozen yeast enriched with manganese at 20 cm3/L, which yielded 10.14 and 12.6 kg/vine, compared with the control, which recorded 3.7 and 5.6 kg/vine in the two seasons, respectively. Full article
(This article belongs to the Special Issue Agrochemistry and Application of Natural Products to Agricultural Research)
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21 pages, 7587 KiB  
Article
Loop-Ultrasound-Assisted Extraction: An Efficient Approach for the Recovery of Bioactive Compounds from Oak Bark
by Ilaria Quaratesi, Ioan Calinescu, Vasile Lavric, Vittoria Ferrara, Elena Badea, Petre Chipurici, Elisa-Gabriela Dumbravă, Rodica-Roxana Constantinescu, Nicoleta Daniela Ignat and Ioana Popa
Agronomy 2024, 14(7), 1452; https://doi.org/10.3390/agronomy14071452 - 4 Jul 2024
Viewed by 286
Abstract
Oak bark is a by-product known for its richness in polyphenols, with tanning substances being particularly interesting for their application in different fields. Vegetable tannins are mostly utilized in the leather sector, but are also widely used as adhesives, in cement plasticizers and [...] Read more.
Oak bark is a by-product known for its richness in polyphenols, with tanning substances being particularly interesting for their application in different fields. Vegetable tannins are mostly utilized in the leather sector, but are also widely used as adhesives, in cement plasticizers and for medical and agrochemical applications owing to their natural antimicrobial activity. This study aimed to develop a green and efficient pilot-scale technique for extracting polyphenols from oak bark by ultrasound-assisted extraction (UAE) using a modified Dual-Frequency Reactor (DFR). Different parameters, such as extraction time, temperature, and solvent type (water, sodium hydroxide or sodium sulfite and bisulfite solutions) were investigated for their influence on the total phenolic content (TPC) and the quantity of dry extract. Control experiments by conventional methods were also performed. UAE at 50 °C yielded the highest TPC and dry extract (confirmed by ANOVA analysis, p < 0.05) in just 10 min, suggesting that UAE can be considered an energy- and cost-effective alternative to conventional techniques. The most suitable solvent was found to be a 0.5% sodium hydroxide solution. The molecular profile of the extracts was assessed by FTIR-ATR spectroscopy, revealing typical signals of tannins in all extracts. Furthermore, antimicrobial activity tests demonstrated the complete absence of Gram-positive and Gram-negative bacteria in the extracts, ensuring the suitability of the product for different kinds of application. Full article
(This article belongs to the Special Issue Agrochemistry and Application of Natural Products to Agricultural Research)
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