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The Roofmaster: Innovations through the years

‘Never change a winning team’ is a popular saying. After all: ‘Why make adjustments to something that is already good? It often only makes things worse!’

However, if you are actually making improvements rather than just changes, that’s an entirely different matter. And that’s exactly what Besseling Techniek did a number of years ago with the well-known Roofmaster roof washer. You may not be able to notice any difference looking at the outside, but if you look ‘under the hood’ the differences are all the greater.

Let’s go back to the very beginning: when the first roof washer came on the market in the 1980s, people were thrilled that a system was now available that would allow their greenhouses to be washed by machine; something that just wasn’t possible until then. Although growers were perfectly aware – even then – that more light equals a higher yield, relatively little attention was paid to keeping greenhouse roofs clean. And if this happened at all, it could only be done by hand or by using machines constructed by the growers themselves.

When the first Roofmasters came on the market with its well-known A-shaped frame, this sparked a true revolution. The machine did not run in the gutter like a V; it ran over the individual peaks. A major advantage to this is increased stability because the machine moves on four wheels through two gutters. The roof washer also washes the entire roof, from peak to peak, including the outermost sections which, until then, had always been neglected.

Over the years, various extras have been mounted onto it, such as detectors for air vents and end gutters, which automatically bring the roof washer to a halt when an open air vent is detected, or the end of a gutter has been reached. Connection to climate computers was also made possible, so that the machine can start washing when the air vents are closed and the set parameters are met. The next step was to make the machine multi-purpose so that it can also be used to apply chalk. There is, after all, often a shortage of contract workers to apply the various types of chalk in many countries. And even when they are available, they can’t always be deployed where and when they are needed. The Roofmaster can easily be converted from washing to chalking by means of spray booms and brush adjustments, whenever the grower wishes.

The latest large-scale development concerns the electrical operation of the roof washer, for which a patent has been applied. Because the machine is no longer hydraulically driven, which was the case until then, the Roofmaster is now able to wash and apply chalk at a higher speed. Even when the roof washer encounters air vents (which are closed, of course) it barely slows down, so that the tension remains on the cables and hoses. This also decreases the chances of a malfunction. When leaving the platform, the Roofmaster starts up slowly, only to accelerate within a few metres to a higher speed of 20-30 metres per minute. The enormous advantage of the increased speed is obvious: the greenhouse is cleaned sooner and the machine can be deployed to move across the entire greenhouse, from end to end, several times a year. With today’s greenhouses, which are becoming larger and larger, this is a must rather than a luxury.

And those who are still critical and believe that washing at a higher speed comes at the expense of quality are deceived. Besseling Techniek developed a special brush, together with the supplier, that has a larger surface and allows the number of rotations to be increased. Therefore, no concessions have to be made to the quality of cleaning.

The engineers at Besseling Techniek are constantly looking for improvements, for which they are always happy to listen to the feedback provided by hundreds of customers all over the world. As long as changes are improvements – contrary to the well-known saying – further developments will always be on the pipeline here at Besseling Techniek.

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Israel announces creation of global seed company

Two Israeli seed producers, Nirit Seeds and TomaTech, have joined forces to create Israel’s largest vegetable seed company. This synergy will enable unique seed breeding research and development that will accelerate the company’s growth in the international seed markets.

Upon completion of the merger, the company will have more than 80 employees worldwide, including molecular biologists, breeders, agronomists, and others.
The company will improve its breeding activities in Israel, Spain, Mexico and Italy, as well as significantly expand its representation in the Netherlands and North America, with a particular focus on growing vegetables in high-tech greenhouses.

Nirit Seeds is one of the most successful internationally traded tomato and pepper seed producers, investing in the development of revolutionary genetic technologies. TomaTech is one of the leading tomato seed companies in Israel, developing premium varieties, including those resistant to the dangerous Tomato Brown Ruffle Virus (ToBRFV).

The production of crop seeds is one of the most advanced and high-tech sectors in Israel. According to the Seed Department of the Federation of Israel Chambers of Commerce, seed exports currently generate $200 million in annual revenue. There are about 25 large and medium-sized companies in the local industry.

For reference. According to market research, the global vegetable seed industry is valued at $8 billion a year and is growing at a CAGR of 8%.

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Karachay-Cherkessia became one of the leaders in the production of greenhouse vegetables at the end of 2021


Greenhouse vegetable production in 2021 reached a record 1.4 million tonnes. According to the Ministry of Agriculture of the Russian Federation, the leaders among the regions in this segment are the Karachay-Cherkess Republic, Lipetsk, Moscow, Kaluga, Volgograd, Novosibirsk, Saratov, Chelyabinsk regions, Krasnodar and Stavropol Territories, the Republics of Bashkortostan and Tatarstan. These regions account for more than 60% of the total production in the country. The intensive development of greenhouse projects in our country helps to provide Russians with fresh vegetables all year round. Last year, the harvest in winter greenhouses updated the 2020 record – more than 1.4 million tons of products were received. Including the production of cucumbers amounted to at least 830 thousand tons, and tomatoes – 590 thousand tons. It is expected that by 2025 the volume of vegetable production in year-round greenhouses will be at least 1.6 million tons of vegetables.


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December: Special Year Overview

In 2022, it will be 22 year since the new millennium started. Can’t believe it? Neither can we, but it is true. Before we go there, it is time to reflect on what has happened this year. Over the next couple of weeks, we will look back at 2021 and we will highlight the most important events that impacted the industry.

New greenhouses, events, even a few shows, technical novelties, and all other relevant news will pass by, offering you something other than Covid to talk about during Christmas and New Years’.


Wish your customers Happy Holidays
This special also offers an opportunity to put your company in the spotlight with a banner in this special box. This banner can be booked until December 24 on our newsletters. For more information, feel free to send an email to: 

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