Slobodan Krnjajić

ORCID: 0000-0001-5278-4589
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About
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Research Areas
  • Phytoplasmas and Hemiptera pathogens
  • Insect Pest Control Strategies
  • Insect-Plant Interactions and Control
  • Plant Pathogenic Bacteria Studies
  • Helminth infection and control
  • Insect and Pesticide Research
  • Cocoa and Sweet Potato Agronomy
  • Plant Pathogens and Fungal Diseases
  • Insect Resistance and Genetics
  • Rabbits: Nutrition, Reproduction, Health
  • Entomopathogenic Microorganisms in Pest Control
  • Insect symbiosis and bacterial influences
  • Essential Oils and Antimicrobial Activity
  • Plant Virus Research Studies
  • Agriculture, Plant Science, Crop Management
  • Forest Insect Ecology and Management
  • Plant Pathogens and Resistance
  • Hymenoptera taxonomy and phylogeny
  • Parasite Biology and Host Interactions
  • Insect Pheromone Research and Control
  • Yeasts and Rust Fungi Studies
  • Agricultural pest management studies
  • Agricultural Practices and Plant Genetics
  • Entomological Studies and Ecology
  • Fungal Plant Pathogen Control

University of Belgrade
2017-2025

Institute for Multidisciplinary Research
2017-2023

Cambridge University Press
2021

New York University Press
2021

Institute of Entomology
2021

Institute for Plant Protection and Environment
2007-2020

CABI Switzerland
2009-2019

National Institute for Research and Development of Isotopic and Molecular Technologies
2017-2018

United States Department of Agriculture
2009

The Ohio State University
2009

Plastic pollution has become a major environmental problem, while the products of its degradation, microplastics (MPs), appear everywhere on Earth. Data MPs in agricultural soils have appeared lately, but significant knowledge gap exists regarding forest soils. In Serbia, municipal waste is often dumped forests, creating problems that not been documented. To explore impact dumping and fluvisols, we evaluated from topsoils three dumps adequate visibly plastic non-contaminated sites located...

10.3390/f16020363 article EN Forests 2025-02-17

Flavescence dorée (FD) is a European quarantine grapevine disease transmitted by the Deltocephalinae leafhopper Scaphoideus titanus. Whereas this vector had been introduced from North America, possible origin of FD phytoplasma needed to be challenged and correlated with ecological genetic drivers emergence. For that purpose, survey diversity these phytoplasmas in grapevines, S. titanus, black alders, alder leafhoppers clematis were conducted five countries. Out 132 map genotypes, only 11...

10.1371/journal.ppat.1007967 article EN cc-by PLoS Pathogens 2020-03-25

Herbal products such as essential oils may play a promising role in the treatment of infections caused by gastrointestinal nematodes (GINs). The aim this study was to evaluate vitro potential 11 (EOs) and one binary combination isolated EO compounds, well vivo anthelmintic efficacy two formulations. Four GIN genera were identified coproculture examination: Haemonchus, Trichostrongylus, Teladorsagia Chabertia. egg hatch test (EHT) performed at six different concentrations (50, 12.5, 3.125,...

10.3390/vetsci9020093 article EN cc-by Veterinary Sciences 2022-02-19

Crop production in plastic greenhouses is one of the major sources pollution worldwide. The main hypothesis this study that regular use mulch film leads to cumulative accumulation microplastic particles (MPs) soil, which ultimately changes soil properties. Therefore, objective was identify possible physical, chemical, and biological properties three regions Serbia. following chemical parameters were determined: electrical conductivity, acidity, cation exchange capacity (CEC), total carbon...

10.3390/horticulturae11030305 article EN cc-by Horticulturae 2025-03-11

Nowadays, the exclusive use of commercial anthelmintics for treatment gastrointestinal nematode infections in ruminants is less sustainable due to anthelmintic resistance, as well problem drug residues animal products and environment. Therefore, an integrated therapeutic approach needed, including search alternatives synthetic drugs. The aim this study was evaluate possibility using essential oil peppermint (Mentha x piperita L.) control nematodes sheep. For purpose, vitro vivo efficacy...

10.3389/fvets.2023.1232570 article EN cc-by Frontiers in Veterinary Science 2023-08-10

Maize redness (MR), induced by stolbur phytoplasma (‘Candidatus Phytoplasma solani’, subgroup 16SrXII-A), is characterized midrib, leaf, and stalk reddening abnormal ear development. MR has been reported from Serbia, Romania, Bulgaria for 50 years, recent epiphytotics reduced yields 40 to 90% in South Banat District, Serbia. Potential vectors including leafhoppers planthoppers the order Hemiptera, suborder Auchenorrhyncha, were surveyed MR-affected low-MR-incidence fields, 33 different...

10.1094/phyto-99-9-1053 article EN other-oa Phytopathology 2009-08-11

In this work by encapsulation technique we have synthetized three new clove bud essential oil (CEO) Emulsifiable Concentrate (EC) formulations depending on the carrier (synthetic zeolite- F-CSZ, nature F-CNZ and gelatin- F-CG). The main idea was to develop an eco-friendly biopesticide that can find use in plant protection as alternative of conventional pesticides. By wanted enable water solubility ensure prolonged efficacy oil. Biological activity designed CEO tested potato tuber moth...

10.3390/agriculture12030338 article EN cc-by Agriculture 2022-02-27

The development of anthelmintic resistance in sheep gastrointestinal nematodes (GINs) requires novel strategies for the sustainable control these parasites. This study aimed to evaluate efficacy Origanum vulgare (L.) essential oil (EO) against GINs and possibility its use practice. vitro egg hatch test was conducted at eight different concentrations (50, 12.5, 3.125, 0.781, 0.195, 0.049, 0.025, 0.0125 mg/mL) tested EO. For vivo fecal count reduction test, EO O. administrated orally a mean...

10.3390/ani13010045 article EN cc-by Animals 2022-12-22

The field pea is very important when it comes to the nutrition of domestic animals, due a high content proteins in its grains and aboveground biomass. aim this study was examine genetic variability quantitative traits newly created hybrids. researchers studied two cultivars, one line their F3 F4 following were analysed: number pods per plant, pod, 1000 seed weight grain yield. largest plant recorded for Baccara × L-CC hybrid, with statistically significantly larger (P < 0.01) than all other...

10.17221/89/2017-cjgpb article EN cc-by-nc Czech Journal of Genetics and Plant Breeding 2018-06-19

In a survey to determine the presence and distribution of Iris yellow spot virus (IYSV) in greenhouse ornamentals onion field crops 14 districts Serbia as well on imported ornamental plants, 1,574 samples were collected analyzed by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA). IYSV was not detected nearly 1,200 plant from 39 genera grown greenhouses or other countries during 2005 2007. The an seed crop Sirig locality (South Bačka District) that showed symptoms...

10.1094/pdis-93-10-0976 article EN other-oa Plant Disease 2009-09-09

Elm yellows phytoplasmas (EY) belonging to the 16SrV‐A subgroup were recently proposed as a new candidate species ‘ Candidatus Phytoplasma ulmi’. These pathogens infect elm trees, causing leaf yellowing and premature drying. In this study, 25 isolates originating from localities in northeast, east southwest Serbia characterized by means of RFLP analysis DNA sequencing four genomic loci: 16S rRNA, ribosomal protein rpl22 ‐ rps3 , secY map . total, five different genotypes identified based on...

10.1111/j.1365-3059.2010.02383.x article EN Plant Pathology 2010-11-05

Abstract In August 2008, grapevine yellows (GY)‐like symptoms were observed in vineyards near Podgorica, Montenegro. A survey of the grape growing area Montenegro was conducted to identify and determine distribution phytoplasmas associated with grapevine. Phytoplasmas detected symptomatic vine plants using PCR universal primers for amplification phytoplasma 16S rRNA gene. From 42 sampled, 36 positive presence phytoplasmas. RFLP profiles rDNA all isolates tested indicated that they belong...

10.1111/j.1439-0434.2009.01560.x article EN Journal of Phytopathology 2009-04-01

Unusual blight-like symptoms appeared on highbush blueberry plants in Serbia during August 2015 and infected showed browning reddening of leaves, drying foliage brown discolouration internal vascular stem tissues. The objective this study was to isolate confirm a causal agent the disease. Five diseased (2-year-old), with visible wood, were collected for isolation potato dextrose agar (PDA). Morphological analysis selected fungal isolates presence abundant black, round oblong, or irregularly...

10.1080/07060661.2017.1415977 article EN Canadian Journal of Plant Pathology 2017-12-11

Tomato leaf miner Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae), a devastating pest of tomato originating from South America has been recorded in Serbia on three localities: main greenhouse and open field production area located the vicinity town Leskovac (South Serbia), surroundings village Donji Vrtogos (near Vranje, Serbia) greenhouses complex Kraljevci (60 km west Belgrade). The presence T. was confirmed by morphological molecular study collected specimens.

10.2298/pif1103197t article EN cc-by-sa Pesticidi i fitomedicina 2011-01-01

Abstract The Colorado potato beetle, Leptinotarsa decemlineata (Say), is one of the most destructive pest species to have developed resistance chemical insecticides. We determined composition and evaluated potential Tanacetum parthenium L. vulgare (Asteraceae family) essential oil (EO) application as an alternative eco-friendly control strategy against . assessed antifeedant activity for larvae adults by estimating damage leaves treated with three concentrations EOs dissolved in ethanol...

10.1017/s0007485320000504 article EN Bulletin of Entomological Research 2020-08-11

Essential oils (EOs) have historically been used for centuries in folk medicine, and nowadays they seem to be a promising control strategy against wide spectra of pathogens, diseases, parasites. Studies on free-living nematodes are scarce. The microbivorous nematode Panagrolaimus sp. was chosen as the test organism. possesses extraordinary biological properties, such resistance extremely low temperatures long-term survival under minimal metabolic activity. Fifty EOs from 22 plant families...

10.3390/plants9111588 article EN cc-by Plants 2020-11-17

Numerous scientific research studies all over the world have addressed problem of agriculture in 21st century as being particularly sensitive to climate change, which has caused phytopathogenic bacteria spread. Therefore, there is a clear and urgent need contain this kind risk agricultural production (both conventional organic farming). The objective study was determine antibacterial activity 30 essential oils (EOs) against three harmful plant pathogenic importance, Erwinia amylovora,...

10.2298/pif1804185p article EN cc-by-sa Pesticidi i fitomedicina 2018-01-01

Iris yellow spot virus (IYSV; genus Tospovirus, family Bunyaviridae) is established in several European countries (France, Italy, The Netherlands, Poland, Slovenia, Spain, and the UK) its distribution EU region has increased since 2002 (3). In July 2007, symptoms resembling those of IYSV were observed an onion (Allium cepa) seed crop Sirig locality Serbia. Onion plants exhibited characteristic chlorotic or necrotic spindle diamond-shaped lesions on leaves scapes. Symptomatic found throughout...

10.1094/pdis-92-8-1247a article EN other-oa Plant Disease 2008-07-11
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