Microbial Inoculants for Biofertilizers and Biopesticides

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Crop Protection, Diseases, Pests and Weeds".

Deadline for manuscript submissions: closed (20 July 2021) | Viewed by 7804

Special Issue Editor


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Guest Editor
Center for Health & Bioresources, AIT Austrian Institute of Technology, Konrad Lorenz Strasse 24, 3430 Tulln, Austria
Interests: microbial formulation development; encapsulation of bioeffectors; slow release coatings; seed treatment; biocontrol; plant growth promotion
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Special Issue Information

Dear Colleagues,

Crop protection is essential for ever-intensifying agriculture and a steadily increasing world population. At the same time, increasing human health and environmental concerns (climate change), as well as steeply rising regulatory hurdles and expenses to bring novel active substances to the market, are shifting innovation from synthetic towards biological control and fertilizer agents.

Microbial biopesticides show many advantages beyond their eco-friendly nature. They are generally more specific, as they target one specific pest, are usually unharmful to other species, and their properties can be optimized using a proper formulation strategy. Microbial biocontrol agents have been introduced, but suffer from a limited shelf life, poor and inconsistent efficiency in the field, and strong dependency on environmental factors. Together with digital technologies, such as sensory tools and weather stations, cultural methods and improved formulations and delivery equipment efficacy can be maximized with a minimal input of materials and cost.

On the other hand, microbial inoculants, including nitrogen fixing rhizobacteria or phosphate solubilizing/mobilizing microbes, can positively affect the availability and/or production of plant nutrients and phytohormones, improve their nutrient uptake, and protect the plant from environmental stresses and pathogens.

The aim of this Issue is to show the potential of microbial fertilizers and biocontrol agents using bacteria or fungi for plant growth promotion, disease treatment, or pest control. Manuscripts dealing with the field evaluation of effective microbial strains, formulation development, delivery methods, integrated pest management, and various applications in the area of biofertilizers and biopesticides will be considered.

Dr. Claudia Preininger
Guest Editor

Manuscript Submission Information

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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. Agriculture 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

  • bacteria and fungi for plant growth promotion
  • microbial biocontrol agents
  • spraying applications
  • formulation development
  • integrated pest management
  • microbial fertilizers and biopesticides using digital technologies

Published Papers (2 papers)

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Research

12 pages, 2325 KiB  
Article
Effects of Carrier Materials and Storage Temperatures on the Viability and Stability of Three Biofertilizer Inoculants Obtained from Potato (Solanum tuberosum L.) Rhizosphere
by Becky Nancy Aloo, Ernest Rashid Mbega, Billy Amendi Makumba and John Baptist Tumuhairwe
Agriculture 2022, 12(2), 140; https://doi.org/10.3390/agriculture12020140 - 20 Jan 2022
Cited by 11 | Viewed by 4059
Abstract
Biofertilizer technology continues to be derailed by the short shelf life of inoculants. The present study investigated the suitability of wheat-bran (WB), rice-husks (RH), farmyard-manure (FYM), bagasse (BG), and sawdust (SD) in the formulation of potato-derived Klebsiella grimontii (MPUS7), Serratia marcescens (NGAS9), and [...] Read more.
Biofertilizer technology continues to be derailed by the short shelf life of inoculants. The present study investigated the suitability of wheat-bran (WB), rice-husks (RH), farmyard-manure (FYM), bagasse (BG), and sawdust (SD) in the formulation of potato-derived Klebsiella grimontii (MPUS7), Serratia marcescens (NGAS9), and Citrobacter freundii (LUTT5) under refrigerated (8 °C) and room (25 ± 2 °C) storage. The physicochemical properties of the materials were assessed before sterilization and introduction of the inoculants and assessment of their viability for 8 months. Most of the physicochemical properties of the materials varied significantly (p < 0.05). Bagasse supported the maximum growth of MPUS7 (5.331 log CFU g−1) under refrigeration and LUTT5 (4.094 log CFU g−1) under both conditions. Under room storage, the maximum growth of MPUS7 (3.721 log CFU g−1) occurred in WB. Formulations that remained viable under room storage can easily be integrated into existing agricultural distribution systems that lack refrigeration. Full article
(This article belongs to the Special Issue Microbial Inoculants for Biofertilizers and Biopesticides)
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12 pages, 1936 KiB  
Article
Co-Inoculation of Sechium edule (Jacq.) Sw. Plants with Rhizophagus intraradices and Azospirillum brasilense to Reduce Phytophthora capsici Damage
by Juan Francisco Aguirre-Medina, Jorge Cadena-Iñiguez, Gildardo Olguín-Hernández, Juan Francisco Aguirre-Cadena and Mauricio Iván Andrade-Luna
Agriculture 2021, 11(5), 391; https://doi.org/10.3390/agriculture11050391 - 26 Apr 2021
Cited by 1 | Viewed by 2404
Abstract
Agricultural production systems based on the application of synthetic chemical inputs are changing to more ecological management systems. In this context, rhizosphere microorganisms are considered fundamental to improving soil fertility and providing protection to the host plant. The objective of this study was [...] Read more.
Agricultural production systems based on the application of synthetic chemical inputs are changing to more ecological management systems. In this context, rhizosphere microorganisms are considered fundamental to improving soil fertility and providing protection to the host plant. The objective of this study was to perform co-inoculation of Sechium edule (Jacq.) Sw. plants (chayote) with Rhizophagus intraradices and Azospirillum brasilense to reduce Phytophthora capsici damage. The chayote seeds were established in bags, and their inoculation was evaluated alone and in combination with R. intraradices and A. brasilense, in addition to inoculating the stem 14 days after planting with P. capsici. Eight treatments were distributed completely at random, with four repetitions. Morphological and physiological yield variables were recorded at 28, 56, and 84. It was found that S. edule treatment with R. intraradices and A. brasilense increased dry matter allocation in the morphological and physiological performance components. The biomass of plants inoculated with P. capsici and biofertilized with R. intraradices and A. brasilense decreased by 27%, which is relevant, since, under field conditions, plants infected with P. capsici die. Petiole biomass and leaf area decreased during the three evaluation periods with the presence of P. capsici. The other components had a differential response. Full article
(This article belongs to the Special Issue Microbial Inoculants for Biofertilizers and Biopesticides)
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