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Agronomy
Special Issues
Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation
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Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 16376

Special Issue Editors

Prof. Sandra López-Rayo

E-Mail Website
Guest Editor
Dept Agr Chem & Food Sci, Univ Autonoma Madrid, E-28049 Madrid, Spain
Interests: micronutrients; fertilizers; plant; deficiency
Prof. Juan J. Lucena

E-Mail Website
Guest Editor
Dept Agr Chem & Food Sci, Univ Autonoma Madrid, E-28049 Madrid, Spain
Interests: micronutrients; fertilizers; plant; deficiency

Special Issue Information

Dear Colleagues,

The deficiency of micronutrients in plants is one of the main concerns in agriculture worldwide, affecting the crop development, yield, and quality. This deficiency may occur in calcareous soils due to the low mobility of metal micronutrients or, in the case of Zn and Mn, highly washed soils. The deficiencies of iron (Fe), manganese (Mn), and cinc (Zn) in these soils are frequent, necessitating the application of fertilizers. Traditional fertilizers such as chelates have long been used, but today, the agriculture community is seeking new alternatives with high effectivity and less impact in the environment. In order to propose new micronutrient fertilizers, their chemical characterization and agronomic evaluation is mandatory prior their incorporation into the commercial market to ensure their effectiveness.

This Special Issue will focus on “Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation”. We are open to novel research, reviews, and opinion articles covering all aspects of the evaluation of novel micronutrient fertilizers, including their chemical characterization to determine their stability, resilience, and interactions in different media, as well as their plant evaluation in different growing conditions and crops, related to their chemical evaluation. The study of novel micronutrient fertilizers based on new sources and with new mechanisms for nutrient released to improve the efficiency of the fertilizers are welcomed.

Prof. Sandra López-Rayo
Prof. Juan J. Lucena
Guest Editors

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

  • micro-nutrients
  • deficiency
  • plant
  • chemical behavior

Published Papers (3 papers)

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Research

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11 pages, 946 KiB  
Article
Combined Foliar Zinc and Nitrogen Application in Broccoli (Brassica oleracea var. italica L.): Effects on Growth, Nutrient Bioaccumulation, and Bioactive Compounds
by Angélica Rivera-Martin, Dolores Reynolds-Marzal, Alberto Martin, Rocio Velazquez and Maria J. Poblaciones
Agronomy 2021, 11(3), 548; https://doi.org/10.3390/agronomy11030548 - 14 Mar 2021
Cited by 8 | Viewed by 2267
Abstract
To evaluate if the combined foliar application of nitrogen (N) and zinc (Zn) in broccoli improves the efficiency of the single Zn biofortification, five treatments were tested: (i) control; (ii) one Zn application at the beginning of flowering (0.5M1); (iii) combined [...] Read more.
To evaluate if the combined foliar application of nitrogen (N) and zinc (Zn) in broccoli improves the efficiency of the single Zn biofortification, five treatments were tested: (i) control; (ii) one Zn application at the beginning of flowering (0.5M1); (iii) combined 0.5M1 with N application (0.5M1N); (iv) two Zn applications, one at the beginning of the flowering and other after two weeks (0.25 + 0.25) and (v) combined 0.25 + 0.25 with N (0.25N + 0.25N). The Parthenon cultivar showed a good concentration of Ca, Fe, Mg, and Zn, with good bioavailability and glucosinolates, mainly in the florets, and high antioxidant activity and total phenols, mainly in the leaves, showing their potential not only as regards to human consumption, but also for the use of their by-products. All the studied treatments increased floret growth (19%), antioxidant capacity and total phenol content, not affecting Ca, Fe, and Mg concentrations. Glucosinolate content was mostly independent from the studied treatments, decreasing slightly in terms of glucoiberin and the Zn concentration in the florets increased in >50 mg Zn kg−1 in the split treatments and ~40 mg Zn kg−1 when the application was unique, with excellent bioavailability, measured as PA:Zn ratio. Therefore, 0.25 + 0.25 and 0.25N + 0.25N applications have been confirmed as the applications that improve more both growth and accumulation of Zn and biocompounds in broccoli. Full article
(This article belongs to the Special Issue Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation)
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15 pages, 2738 KiB  
Article
Application of Seaweed Organic Components Increases Tolerance to Fe Deficiency in Tomato Plants
by Sandra Carrasco-Gil, Raúl Allende-Montalbán, Lourdes Hernández-Apaolaza and Juan J. Lucena
Agronomy 2021, 11(3), 507; https://doi.org/10.3390/agronomy11030507 - 09 Mar 2021
Cited by 9 | Viewed by 2931
Abstract
The beneficial effects of seaweed extracts have been related to plant growth regulators present in seaweeds. However, algae extracts comprise other organic compounds such as phenols, mannitol, alginates, laminarins, and fucoidans that may have a relevant role regarding abiotic stress tolerance due to [...] Read more.
The beneficial effects of seaweed extracts have been related to plant growth regulators present in seaweeds. However, algae extracts comprise other organic compounds such as phenols, mannitol, alginates, laminarins, and fucoidans that may have a relevant role regarding abiotic stress tolerance due to nutrient deficiency. Therefore, we evaluated the individual effect of these organic compounds in a range of concentrations on the mitigation of Fe deficiency in tomato plants. Germination and plant growth promotion, root morphology, chlorophyll content, and antioxidant activity were determined. Results showed that the lowest concentration of phenolics, laminarin, and fucose compounds contributed to increasing the tolerance to Fe deficiency in tomato plants. Full article
(This article belongs to the Special Issue Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation)
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Review

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15 pages, 1597 KiB  
Review
Recent Trends in the Foliar Spraying of Zinc Nutrient and Zinc Oxide Nanoparticles in Tomato Production
by Razu Ahmed, Mohd Yusoff Abd Samad, Md. Kamal Uddin, Md. Abdul Quddus and M. A. Motalib Hossain
Agronomy 2021, 11(10), 2074; https://doi.org/10.3390/agronomy11102074 - 16 Oct 2021
Cited by 18 | Viewed by 10147
Abstract
Growing vegetables can be seen as a means of improving people’s livelihoods and nutritional status. Tomatoes are one of the world’s most commonly planted vegetable crops. The nutritional arrangement of the tomato depends on the quantity and type of nutrients taken from the [...] Read more.
Growing vegetables can be seen as a means of improving people’s livelihoods and nutritional status. Tomatoes are one of the world’s most commonly planted vegetable crops. The nutritional arrangement of the tomato depends on the quantity and type of nutrients taken from the growing medium, such assoil and foliar application; therefore, an adequate amount of macro- and micro-nutrients, including zinc (Zn) and zinc oxide nanoparticles (ZnO-NPs), are crucial for tomato production. Zinc foliar spraying is one of the effective procedures that may improve crop quality and yield. Zinc oxide nanoparticles (ZnO-NPs) are represented as a biosafety concern for biological materials. Foliar application of Zn showed better results in increasing soluble solids(TSS), firmness, titratable acidity, chlorophyll-a, chlorophyll-b, ascorbic acid, amount of lycopene. Researchers have observed the effect of nanoparticles of zinc oxide on various crops, including tomatoes. Foliar spraying of ZnO-NPs gave the most influential results in terms of best planting parameters, namely plant height, early flowering, fruit yields as well as lycopene content. Therefore, more attention should be given to improving quantity and quality as well as nutrient use efficiency of Zn and ZnO-NPs in tomato production. Recent information on the effect of zinc nutrient foliar spraying and ZnO-NPs as a nano fertilizer on tomato productivity is reviewed in this article. Full article
(This article belongs to the Special Issue Novel Micro-Nutrient Fertilizers: Chemical Characterization and Plant Evaluation)
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