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| Kristensen, Erik Fløjgaard; Jørgensen, Martin Heide; Kristensen, Jens Kristian. |
| Disinfection of the soil by means of steaming has been a common method for eliminating weeds and fungal diseases. However, surface steaming of soil is a very energy-intensive process, and consequently, efforts have been made to develop a machine for narrow-band steaming of the soil under and around rows of cultivated plants prior to seeding. The use of this machine may achieve up to 90% energy savings, and will also reduce the amount of damage to the flora and fauna. Tests have shown that soil temperatures exceeding 70C will be needed to protect against germination of weed seeds. For band heating such a treatment in 50 cm rows requires about 5.8 GJ/ha. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2005 |
URL: http://orgprints.org/10005/1/10005.pdf |
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| Melander, Bo; Heisel, Torben; Jørgensen, Martin Heide. |
| Steaming the soil prior to crop sowing has the potential of eliminating weed seedling emergence completely. Thus, steaming might be a perspective technique for intra-row weed control in non-herbicidal row crops of high value, where manual weeding can be very laborious. This paper presents some preliminary results with the effects of steaming on weed seedling emergence. The work is part of a joint project involving both biological and technical aspects of steaming. The overall objective is to develop an applicable technique for applying steam in bands corresponding to the intra-row area of a row crop. Band-steaming is expected to use much less energy as compared to current steaming techniques for arable usage. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2002 |
URL: http://orgprints.org/1545/1/1545.pdf |
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| Elsgaard, Lars; Elmholt, Susanne; Jørgensen, Martin Heide. |
| Band-steaming of arable soil at 80–90 °C kill off weed seeds prior to crop establishment which allows an extensive intra-row weed control. Here we evaluated the side-effects of in situ band-steaming on soil respiration, enzyme activities, and numbers of culturable bacteria and fungi in an organic field soil. The results showed that mechanical disturbance created by band-steaming could be neglected as a mediator of microbial changes. Also, soil pH and water content was unaffected by band-steaming. Effects of band-steaming on in situ soil respiration and basal respiration, respectively, were insignificant or slightly stimulatory (P < 0.05). Fluorescein diacetate hydrolysis and arylsulfatase activity were significantly (P < 0.001) inhibited by 25 and... |
| Tipo: Journal paper |
Palavras-chave: Soil biology; Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/17300/1/Agriculture_Ecosystems_and_Environment_2010.pdf |
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| Melander, Bo; Cirujeda, Alicia; Jørgensen, Martin Heide. |
| Inter-row hoeing is known to control tap-rooted and erect weed species more effectively in winter wheat than weed harrowing. However, little is known about its effectiveness for use in the spring in winter wheat grown at wide row spacing (240 mm) under the influence of different placement of fertiliser. Two field experiments, one in 1999 and one in 2000, were conducted to study the influence of fertiliser placement, timing of inter-row hoeing, and driving speed on the weeding effect on different weed species and crop growth. Placement of fertiliser below the soil surface improved crop growth and grain yield in both years compared with placement on the surface, but weeds surviving hoeing were not more suppressed by the improved crop growth. Timing was not... |
| Tipo: Journal paper |
Palavras-chave: Weed management. |
| Ano: 2003 |
URL: http://orgprints.org/2144/1/HOEING_WR.pdf |
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