Matej Knapic

Matej Knapic
Agricultural institute of Slovenia - Kmetijski inštitut Slovenije · Plant Protection Department

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29
Publications
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275
Citations

Publications

Publications (29)
Article
Full-text available
Hyperspectral imaging is a popular tool used for non-invasive plant disease detection. Data acquired with it usually consist of many correlated features; hence most of the acquired information is redundant. Dimensionality reduction methods are used to transform the data sets from high-dimensional, to low-dimensional (in this study to one or a few f...
Article
Full-text available
Root-knot nematodes (Meloidogyne spp.) are considered the most aggressive, damaging, and economically important group of plant-parasitic nematodes and represent a significant limiting factor for potato (Solanum tuberosum) production and tuber quality. Meloidogyne luci has previously been shown to be a potato pest having significant reproductive pot...
Article
Dry detention reservoirs are frequently used as a measure to alleviate flood risk. When implemented on agricultural land, they decrease the productive capacity of a rural landscape and negatively impact soil characteristics , crop quality and quantity, agricultural infrastructure (i.e., irrigation equipment), and agro-economics. The Slovenian gover...
Article
Full-text available
Root-knot nematodes are considered the most important group of plant-parasitic nematodes due to their wide range of plant hosts and subsequent role in yield losses in agricultural production systems. Chemical nematicides are the primary control method, but ecotoxicity issues with some compounds has led to their phasing-out and consequential develop...
Article
Full-text available
In karst landscapes stony soils have little water holding capacity; the rational use of water for irrigation therefore plays an important management role. Because the water holding capacity is not homogenous, precision agriculture approaches would enable better management decisions. This research was carried out in an experimental vineyard grown in...
Conference Paper
When testing the efficacy of plant protection products and assessing their performance, the visual estimates of the occurrence of a particular harmful organism and the rarely measurable properties of plants are used to a greater extent. Multispectral imaging of vegetation measures the reflection of an individual part of the light spectrum, and amon...
Article
Full-text available
Crop infestation with root-knot nematodes (RKN) and water deficiency lead to similar visible symptoms in the plant canopy. Identification of biotic or abiotic stress origin is therefore a problem, and currently the only reliable methods for determination of RKN infestation are invasive and applicable only for point-searches. In this study the appli...
Article
Full-text available
The work aims to investigate the effects of different soil management strategies on carbon sequestration and total nitrogen in areas of vineyards suffering from loss of soil functionality. Treatments, selected for inter-row management, to re-install soil functionality were based on compost or other organic amendments (COMP), green manure (GM), and...
Preprint
Full-text available
This multidisciplinary research work evaluated the effects of soil erosion on grape yield and quality and on different soil functions, namely water and nutrient supply, carbon sequestration, organic matter recycling, and soil biodiversity, with the aim to understand the causes of soil malfunctioning and work out a proper strategy of soil remediatio...
Article
Full-text available
Crop plants are subjected to various biotic and abiotic stresses. Both root-knot nematodes (biotic stress) and water deficiency (abiotic stress) lead to similar drought symptoms in the plant canopy. In this work, hyperspectral imaging was used for early detection of nematode infestation and water deficiency (drought) stress in tomato plants. Hypers...
Article
Full-text available
The work aims to investigate the effects of different soil management strategies on carbon sequestration and total nitrogen in areas of vineyards suffering from loss of soil functionality. Treatments, selected for inter-row management, to re-install soil functionality were based on compost or other organic amendments (COMP), green manure (GM), and...
Article
This research was carried out in an experimental vineyard grown in artificially transformed karst terrain (Croatia). The experimental design included four water treatments in three replicates: 1) fully watered or based on 100% evapotranspiration (ETc) application; 2) regulated deficit irrigation based on 75% and 50% ETc applications; and 3) non-wat...
Conference Paper
Full-text available
Unmanned aerial systems and related new systems for more precision farming are becoming standard in modern food production. Newer technologies allow faster monitoring and precise plant stress control, soil quality and more accurate assessment of vegetation of cultivated plants. Right interpretation results of high resolution multispectral aerial ph...
Article
Near-infrared (NIR) hyperspectral imaging was explored as a rapid and non-destructive method of investigating seed quality parameters such as seed viability and variation in tomato seed lots. The seed lots differed with year of production and variety. Four tomato varieties: Cal J, Monprecus, NCL and Chiuri from 2013, 2014 and 2015 were used in the...
Conference Paper
Full-text available
The Slovenian experience in interlinking the Plant Health legislative and information systems for improving the effectiveness of data gathering, decision making and sharing the awareness or decisions on measures implemented by the National Plant Protection Organization (NPPO) is presented. From among its principal national and international obligat...
Article
Full-text available
Data on the distribution of Longidoridae and nepoviruses in Bulgaria and Slovenia are summarized. Six species of Longidorus (L. apulus, L. attenuatus, L. arthensis, L. fas-ciatus, L. elongatus, L. macrosoma), one Paralongidorus species (P. maximus) and three Xiphinema species (X. diversicaudatum, X. index, X. rivesi) are known as natural vectors of...
Article
Full-text available
Meloidogyne ethiopica is a tropical root-knot nematode species which has recently been found in Europe. We examined its ability to survive in open fields located in regions with sub-Mediterranean and continental European climates. The outdoor microplot experiment consisted of two locations and lasted three growing and two winter seasons. It was dem...
Article
Full-text available
The western corn rootworm (WCR, Diabrotica virgifera virgifera LeConte) is one of the most important maize pests, and was introduced to Slovenia in 2003 by natural spread from both the East and West. In Slovenia, as in other European countries, different patterns of spread and population growth of the WCR have been observed in maize growing areas,...
Article
Full-text available
The western corn rootworm, Diabrotica virgifera virgifera (Dvv), was found for the first time in Slovenia in 2003, in the eastern regions of Pomurje and Podravje along the border with Hungary and Croatia, and in the western region Goriška near the border with Italy. Between 2003 and 2007, its spreading in Slovenia was systematically monitored. To c...
Article
Full-text available
Use of pesticide leaching models is common process because modeling enables uniform and relatively simple way of testing the leaching potential of pesticide. FOCUS PELMO and PEARL models are most frequently used in pesticide registration process, so we tested predicted pesticide concentration in soil solution at 1m soil depth at both models. Both m...
Conference Paper
Full-text available
The pollution of groundwater, which presents an important source of drinking water in Slovenia, has been one of the biggest problems of environmental protection in the last decade. The most common reasons for the pollution of groundwater under the agricultural surface are nitrates. Simulation was made by means of field measurements from a test fiel...
Article
A field trail investigation with different irrigation and fertilization technologies was performed in 1997. Research was concerned in evaluating possible positive effects of involved drip irrigation technologies and fertigation in hop production. We followed yield, alpha acids content and nitrate contents in cones. Nitrogen leaching due different a...

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