August 1st, 2010
The production of environmental friendly paint strictly requires hygiene in order to guarantee high product quality. One of the leading producers of special paints in Germany, the company Schulz GmbH located in the province Rhineland Palatinate, has discovered steam as means for sterilization in order to disinfect storage tanks after the production of organic paint. In particular, tanks need to be freed from bacteria of the family Pseudomonas.
In the mid of July 2010 first steaming tests took place under the supervision of the company Thor GmbH located in Speyer. A steam generator manufactured by MSD with an output of 220 kg / h was used. Steam was induced into the tanks through a special pipe system. The tanks, having a volume of a bout ~8m³, were steamed for about half an hour. Steam was induced through customized injectors at the bottom of the tanks. Condensate ran off through outflow ports at the bottom.
The results were confirmed last week by the company Thor. Steaming lead to complete decontamination of storage tanks. After steaming no bacteria could be found. After the successful tests, the paint producer considers the installation of a stationary steaming system for their operations.
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July 18th, 2010
Bad news for vegetable and salad growers: Poisenous ragwort is further spreading throughout Germany. Just within a couple of decades this plant which is mainly original to the southern regions has developed large populations in south-west Germany coming from Belgium.
For this reason ragwort grows into a threat for the organic and conventional, heavily automated horticulture.
Ragwort contains substances which have a harmful effect on liver and nerves. After consumption they might even cause death. If parts of ragwort get into the harvest, as it became public in 2009, growers might face incalculable consequences.
Growers hardly have any options to fight the danger. There is no herbicide which provides 100% protection. Furthermore the leaves of ragwort seedlings look almost exactly like arugula, which makes a later automatic or manual extraction after harvest almost impossible.
The responsible government office of the German federal state Rhineland-Palatinate (DLR Rheinlandpfalz) is presently reassessing existing methods to fight ragwort. Soil steaming is also among them (please see report from May2010). The results of the investigation will be published shortly.
Posted in Weed Control | 3 Comments »
June 16th, 2010
One of the most beautiful and famous gardens in Germany uses steam as a comprehensive means to control weeds. The so-called dahlia hill was treated sucessfully with steam after other means of weed control had become ineffective and too costly.
In June 2010 Isle Mainau asked the company mobildampf.de to gradually steam flowerbeds of altogether 2000 m² via sheet steaming.
Within just 3 days and after about 50 operating hours the area was sterilized using 2 steam boilers. Among was one steam boiler type S2000 produced by MSD / Durbach with an output of 2000kg steam/h. The beds were steamed down to 30 cm depth reaching a temperature of 85°C.
Within the upcoming years weed pressure on the dahlia hill has been effectively resolved.
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May 26th, 2010
The regional board of Freibug / Germany has finished its research on the control of Japanese knotweed with mere hot steam without chemicals which was started in autumn last year. The last treatment process was conducted to distroy the plant’s rhizomes in deep soil layers.
Already in september 2009 the experiment with hot steam was started. Large areas on the shore of the river Rench which were highly contaminated with Japanese knotweed were excavated down to 20-30 cm depth and steamed completely. The success oft he treatment of more than 95% was already visible at the end of the year 20009 and even more at the beginning of 2010. On the treated area only scattered sprouts appeared as expected.
Counter measures against these sprouts were taken by depth treatment with steam. High pressure lances made by the company MTM-SPINDLER were first driven into the soil down to about 1 m depth. The soil was broken and loosened with induced highly compressed air. Then steaming lances were applied and host steam at 200°C induced for about 15 min.
Already in May 2009 a similar test was made together with a regional government organization in the southwest of Germany to sucessfully kill all surviving germinable root residues after a first superficial treatment of contaminated area.
Hot steam denatures all germinable plant parts in the soil and harms them sufficiently that invading germs weakens the plants to a degree that no offspring can be produced.
Later on the positive results will be further supervised and checked if there is a sustaining positive effect.
Posted in Weed Control | 1 Comment »
May 9th, 2010
On the 4th of May 2010 the service center Rheinlandpflaz in Schifferstadt conducted a bigger field test on weed control. A testing area of 2.000 m² was segmented into several parcels on which different methods of weed control were applied and compared.
Ragwort in focus
Growers in the region were particularily challenged by ragwort in 2010. Hence the testing area was in particular contaminated with ragwort.
Besides the application of chemical means also steaming was considered as alternative method.
16 parcels were steamed with steaming hoods. Testing conditions were suboptimal since the soil was wet and overly compacted due to rain on the previous day. Nevertheless steam penetrated the soil well and heated it up to 99°C down to 5 cm depth within 6.5 minutes. The steamed area was covered with a light sheet afterwards. 10 minutes after steaming temperatures of 95°C could be maintained in 5 cm depth. In 10 cm depth 82°C could still be reached.
It is expected that the steamed area was completely freed from weeds.
Hence the culture can be harvested without weeds and ragwort afterwards.
Posted in Weed Control | No Comments »
April 11th, 2010
One of the leading bio medical research institutes in Switzerland, the Friedrich Miescher Institute, has conducted comprehensive research on the killing effect of hot steam on different weed seeds.
Scientific research was necessary, since the institute had to master the task to sterilize large areas which were cultivated with genetically modified plants.
All germinable plant parts and seeds had to be completely destroyed.
Soil steaming was the first choice
In order to proof the success of the measure at different locations of the contaminated area small bags of seeds were put into the soil before the steaming process. The seeds were examined after steaming on their germination capacity.
The result was 100% convincing: All seed bags exposed to steam, also those which were put in deeper soil layers down to 20cm, were completely killed. No shooting was discovered.
Posted in Weed Control | No Comments »
March 7th, 2010
Success in horticulture requires perfect control of quality, operating cost, crop and output.
In cooperation with Bärtschi‐FOBRO AG (Switzerland), MSD Ltd. from Durbach (Germany) has mastered the task to develop and build a machine which allows a rational 24 hour operation without staff to steam large beets efficiently.
In particular wholesalers increase pressure on vegetable growers to sanitize soil without chemicals. The arugula incident in 2009 where poisonous ragwort was found in salat packs has further increased pressure.
Steaming Mobile - Full Automat in operation on field
1. Video Youtube: Open field operation of the steaming robot
2. Video Youtube: First test of the steaming robot in Februray 2010
Steaming is one of the few suitable methods that are able to meet all requirements. Furthermore a high level of automation could be reached with MSD-Fobro Steaming Robot A600‐12.
The first two fully automatic steaming robots could be handed over after several months of challenging development work.
On the occasion of the IPM 2010 in Essen the steaming robot was introduced to the public for the very first time. The machine was awarded with the Indega innovation award for technical advancement. The price was awarded since the innovation provides a solution for vegetable growers to efficiently control weed pressure and diseases in beets.
Posted in Uncategorized | 2 Comments »
February 12th, 2010
The most populated American federal state is one the biggest producing areas of berry cultures and flowers. Methyl bromide was mostly used to sanitize soil before its international ban. After proscription of this chemical harmful to climate and health, new alternatives to free soil from diseases and weeds are desperately searched for.
Since 2007 the University of California in Salinas does intensive research on different options to apply steaming technology, which has been almost forgotten in the US, although it was leading advancements at the end of the 19th century. Today steaming technology returns back to the focus of interest in America.
Results of the studies are promising. Steaming methods were explicitly compared with the usage of methyl bromide and solarization. Furthermore a combined method of hot steam and solarization has been tested. First soil was covered with insulating sheets and heated merely through sun radiation before hot steam was induced to treat deeper soil layers.
The treatment of soil with mere steam showed the best results. In particular regarding the shotting of weeds, which was even better than the excellent results of methyl bromide. The same results were gained regarding the average weight of fruits. In comparison to the control area, fruit weight increased by more than 25%.
Due to the positive results, the University of California induced further steps to do research on steaming applications for big growers. Therefore end of 2009 a “Sterilter” full automatic steaming machine which was coproduced by Ferrari Constructione and MSD GmbH, Germany-Durbach, was introduced. New experiments will be made with this machine, in order to test and advance steaming applications.
Steaming Robot on tracks (MSD/Ferrari)
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January 11th, 2010
IPM is the leading fair in the area of plants, technology and floristry. In this year’s fair, new steaming technologies will be introduced.
More than 60.000 visitors will come and get the latest updates on the advantages of steaming. New innovations are expected.
MSD GmbH from Durbach, in Germany, will introduce a newly developed steaming system “A-600-12”. This machine has been co-developed with Bärtschi-Fobro, CH-Hüswil, and is specialized on the economic steaming of groomed beet cultures such as Baby-Leaf-Salads. The current version of the system has an output of 600kg per hour. 12m2 can be steamed in one work-step.
Since last year many quantity buyers require complete ragwort-free products due to big problems with ragwort in arugula cultures. Hence it is expected that the machine will meet demand in the market.
In just 5 minutes 95° hot steam kills all weeds and their seeds. The result is always a perfectly sanitized soil which is free from pathogens. For more than half a century, the positive effects of steaming have been scientifically proven.
Fully automatic steamer, MSD/Fobro
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December 22nd, 2009
Decontaminating and disinfecting soil with hot steam has been applied for more than 100 years and is well proven. The Swiss Friedrich Miescher Institute in Basel has made use of this method.
The institute will decontaminate the soil of several green houses completely without chemicals. The goal is to free soil from sproutable plant parts such as seeds and roots as well as restore the original condition of the soil before cultivation without residues of chemical products. Hence steaming was the first choice.
A contractor is responsible for steaming. First soil is loosened down to 20 cm depth, after that the area is gradually covered with steaming sheets which get weighted. Steam generated with a low pressure steam boiler, is induced via a steam injector underneath the sheets.
After 2-4 hours of steaming the desired results are achieved: The soil is completely sanitized and without weeds and diseases.
Posted in Effect of Steam, Soil Sterilization | No Comments »
