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| Swain, Kishore; Nørremark, Michael; Jørgensen, Rasmus N.; Midtiby, Henrik S.; Green, Ole. |
| Weed identification and control is a challenge for intercultural operations in agriculture. As an alternative to chemical pest control, a smart weed identification technique followed by mechanical weed control system could be developed. The proposed smart identification technique works on the concept of ‘active shape modelling’ to identify weed and crop plants based on their morphology. The automated active shape matching system (AASM) technique consisted of, i) a Pixelink camera ii) an LTI Lehrstuhlfuer technische informatik) image processing library, iii) a laptop pc with the Linux OS. A 2-leaf growth stage model for Solanum nigrum L. (nightshade) is generated from 32 segmented training images in Matlab software environment. Using the AASM algorithm, the... |
| Tipo: Journal paper |
Palavras-chave: Weed management. |
| Ano: 2011 |
URL: http://orgprints.org/20658/4/20658.pdf |
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| Swain, Kishore C.; Nørremark, Michael; Bochtis, Dionysis; Sørensen, Claus Grøn; Green, Ole. |
| Robots in agriculture offer new opportunities for real time weed identification and quick removal operations. Weed identification and control remains one of the most challenging task in agriculture, particularly in organic agriculture practices. Considering environmental impacts and food quality, the excess use of chemicals in agriculture for controlling weeds and diseases is decreasing. The cost of herbercides and their field applications must be optimized. As an alternative, a smart weed identification technique followed by the mechanical and thermal weed control can fulfill the organic farmers’ expectations. The smart identification technique works on the concept of ‘shape matching’ and ‘active shape modeling’ of plant and weed leafs. The automated... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2010 |
URL: http://orgprints.org/20653/4/20653.pdf |
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| Green, Ole; Znova, Liubava; Nielsen, Erling E.. |
| I forskningsprojektet RowCrop er forskere fra Aarhus Universitet sammen med virksomheden AGRONINTELLI i gang med at udvikle redskaber til et nyt dyrkningssystem med plantevækst på marken året rundt. Sådan et system har mange fordele, men stiller også nye krav til dyrkningsteknik og markredskaber, hvis det skal kunne bruges af økologer, som ikke har mulighed for at benytte sig af ukrudtssprøjtning. Plantedække året rundt kan først og fremmest forebygge udvaskning af næringsstoffer og erosion og sikre en bedre jordstruktur, men et sådant dyrkningssystem kræver, at man etablerer en efterafgrøde i forbindelse med rækkerensning i hovedafgrøden. Den metode er velkendt, men mekanisk rensning af efterafgrøden i hovedafgrødens stub er en udfordring |
| Tipo: Newspaper or magazine article |
Palavras-chave: Nutrient turnover. |
| Ano: 2016 |
URL: http://orgprints.org/29979/1/%C3%98E%20586%20-%20Mark.pdf |
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| Melander, Bo; Znova, Liubava; Green, Ole. |
| New camera technology capable of detecting crop rows now makes it possible to employ selective weed control in spring cereals. Cereals are normally grown at 125 mm inter-row spacing but even moderate extension of the spacing can make enough room for automatically steered inter-row hoeing; the technology is being employed on an increasing number of organic farms. However, intra-row weeds, i.e. those growing in the crop lines, are not controlled and increasing the inter-row spacing to ≥ 250 mm may cause a yield penalty. The aim of this study was to investigate the interaction between inter-row cultivation, inter-row spacing and nitrogen rate on weed and crop growth. Results encompass four years field experimentation with spring barley and spring wheat... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2018 |
URL: http://orgprints.org/35060/1/EWRS_18_BME.pdf |
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| Melander, Bo; Green, Ole; Znova, Liubava. |
| Flex-tine weed harrowing conducted as a full-width operation treating both crop and weeds is the principal method for direct weed control in organic spring cereals in Northern Europe. Results with this technology have varied considerably where especially crop injuries and control failures against tall-growing and tap-rooted weed species have been major drawbacks. New camera technology capable of detecting crop rows makes it possible to employ selective weed control in spring cereals. Normally cereals are grown at 12.5 cm row spacing in Northern Europe but even a moderate extension of the row spacing can make enough room for implementing automatically steered inter-row hoeing. Experiences from practice have shown that camera-based steering systems can guide... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2016 |
URL: http://orgprints.org/29975/1/Abstract%20no.%20461.pdf |
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