This is largely a fallacy since tunnels are BIG, and if you move them you will damage the plastic, which will then need to be replaced. Tunnels are usually constructed on bare earth. Crop Rotation: What to Plant After Tomatoes. Werner Bekker from the chemical supplier, Intelligro, has also assisted her with a fertilisation and pest management programme. Haygrove brings a grower to grower approach. Sow seed at a depth approximately three times the diameter of the seed. Demand from the retail outlets that she supplied previously tended to fluctuate. The majority of tunnel production in South Africa is carried out in standard (non-temperature controlled) tunnels, while utilization of temperature controlled tunnels is increasing. But if you have the space for one, it could be a simple alternative to a greenhouse, and could enable you to grow some superb juicy tomatoes at home! Initially, tomato growers using tunnels generally use a field production approach and place transplants in the ground. This not only has marketing advantages; it also means you’re using your labour force more effectively. This make watering as easy as pressing a button. Standard 3.5m w ide x 2.2m high x different lengths. Many commercial tomato farmers grow their crops in greenhouses which have a scientifically controlled micro-climate. For example, Eleanore has to continually monitor the electrical conductivity (EC) of the water to ascertain its soluble salt content. GREENHOUSE TUNNELS Vegetables are important for food security and poverty alleviation. Growing tomatoes in a high tunnel or hoop-house extends the season by providing protection from frost and maintaining warmer temperatures that allow for earlier harvest. After the plants are removed from a section of the greenhouse at the end of their productive livespan, the area is thoroughly cleaned and disinfected. In New England, tomato yield and quality are usually greatly improved when growing in protected culture compared to the field. In 2012, Eleanore’s husband, Bryan, received government funding to erect a multi-span greenhouse for tomato production on their 9ha smallholding, Compagniesdrift. As she had no practical farming experience, she enrolled in various production courses offered by the Western Cape Department of Agriculture. “One of the biggest challenges for small-scale farmers like me is to offer continuous supply volumes throughout the year. Tunnel farming has been around in South Africa for almost 4 decades. The following year, after she fell pregnant with their second son, Jeandré, Bryan persuaded her to resign and take over the tomato operation on their farm while he conc… Tomatoes are, however, seldom direct seeded in the land. During a recent violent storm, the farm suffered no damage thanks to early warnings received. Nip off the growing point when it … In winter, the vents are closed to raise the inside temperature; in summer they are opened to improve air circulation. Cherry tomatoes produce small fruit, ideal for salads. If growers have suitable sized equipment, they may shape and cover beds with plastic mulch. She was the Western Cape winner of the smallholder category in the Department of Agriculture, Forestry and Fisheries’ 2014 Female Entrepreneur of the Year Awards. Perfect for small urban gardeners, farmers and nursaries. All our Eco Tunnels are Strong | Sturdy | Weather Resistant | Durable | Economical | Sustainable. Nonetheless, I built a 6 x 3m tunnel and laid a network of 40mm agricultural piping +-150 to 200mm below the surface. They provide protection from wind, rain, hail and of … We also manufacture galvanized- , mild steel painted structures on request. However, Eleanore Swart, who produces tomatoes under cover near Botrivier in the Overberg, is proof that new farmers can achieve success with this highly technical production method. At the end of the day a tunnel and a commercial greenhouse generally do the same thing. Greenhouses and less sophisticated tunnels provide excellent growing conditions for tomatoes, even when temperatures are not closely controlled. Regular watering within a greenhouse or tunnel not only keeps the temperature regular and creates a nice humid environment, it also helps to curtail invasion by certain pests including the red spider mite. Tomato production in South Africa remained constant over the past three years. Offering outstanding customer service, increased flexibility, and greater value, ... 7160, South Africa To add value to the produce, and to keep workers busy during quieter periods, Eleanore recently started to make jam from second-grade tomatoes. They provide protection from wind, rain, hail and of course from the sun and from excessively cold conditions. These enabled Eleanore and her team to take extra precautions such as placing tree stumps at the bottom of the windshields as anchors. This year, unfortunately, things didn’t go according to plan, as production was disrupted by an outbreak of potato tuber moth [Phthorimaea operculella]. Funnily enough the damaging little whitefly is more of a pest in greenhouses that it is when tomatoes are grown out in the open. Our goal is to supply farmers with a cost effective solution to covering large areas with tunnels. High tunnels have made a big impact on production, especially for many small-scale vegetable producers. As the area tends to experience strong wind, nets have been erected on the sides of the multi-span tunnel to shield it. In 2002, he grew cucumber plants as an experiment, and after their success began farming both cucumbers and tomatoes and, aged 50, he took early retirement and began farming full-time. The tomatoes are sorted and packed in a facility on the farm. Climate control is managed manually by opening or closing doors and tunnel vents. It may not be worth spending money on structures; rather spend time and effort ensuring the soil in your veggie garden is good. Eleanore stresses that farmers need to recognise their strengths and weaknesses, and continually work to improve these if they wish to succeed. 3m|6m|9m|12m|24m long. Production. Seed sown in spring and summer will germinate in 7 to 14 days and harvesting begins in 70 to 80 days. Living in Rhodes makes winter growing a nightmare of note. But even a sheltered environment like a plastic-covered tunnel frame gives some natural “control” of both light and moisture. Greenhouses are already a very important way to produce vegetables in South Africa because of the production potential, the high quality of the produce and the efficient water usage. It stems from the original idea in the 19th century that crops could be grown using hydroponics as opposed to growing in the soil. “Some producers use the growth medium more than once by rotating the crop or sterilising the medium. Some are made with aluminium (or aluminum – depending where you live!) Plant bags are then prepared by first placing a layer of tree bark at the bottom of each bag to facilitate drainage. Every good reason to grow tomatoes and other high return vegetables and small fruits in high tunnels … Email Eleanore Swart at [email protected]. According to Eleanore, tomatoes are usually ready to be harvested three months after planting, but warmer weather can result in the crop ripening up to a month earlier. A ‘high tunnel’ is a large cold-frame hoop house or greenhouse which is usually unheated. The type and size of tomato varies greatly from area to area; if you choose wrongly, you’ll get a lower price. Tunnel farming has been around in South Africa for almost 4 decades. There isn’t therefore the opportunity to make openings, except at the two ends. Large plants can grow up to 3 m or 10 ft! Over time a growing number of companies have manufactured less expensive structures, some of which are available in kit form. Although Eleanore would ideally like to erect an additional multi-span greenhouse to increase production, the cost of about R1 million per greenhouse has proven prohibitive. To supplement production capacity in the interim, Eleanore has invested in six small tunnels and is planning to add two more later this year. Having recently secured a long-term contract with a major fresh produce retailer, she plans to significantly expand production. The glass (or polycarbonate) transmits light during the day and can be capable of trapping quite a lot of heat at night. ZZ2 is a South African agricultural group that grows fruits and vegetables. High tunnels have the potential of extending the season, improving yield and quality and making organic production possible for many crops, especially a crop like tomatoes that can be difficult to produce organically in our climate. Tunnella Tunnels is the sole Stainless Steel 409 Hydroponic Tunnel manufacturers in South Africa. Growing tomatoes: Give them room to grow. Production expansion would also help me to create new employment opportunities,” she explains. Eleanore Swart produces tomatoes under cover near Botrivier in the Overberg. Eco-Tunnels are eco-friendly greenhouse tunnels made in an easy-to-assemble DIY Kit. With over 25 years of hydroponic production and greenhouse experience, professional greenhouse horticulture is our field of expertise. In some countries, greenhouses are more commonly used when weather conditions are less than perfect, or to raise seedlings that are going to be planted out. A contact insecticide is also used preventively to combat the pest. We upgraded to our current store in August 2019 thanks to our loyal customers. Tomatoes are grown all over the country in summer and in winter in frost-free areas, and their production is concentrated in Limpopo, the Mpumalanga Lowveld and Middleveld, the Pongola area of Kwazulu-Natal, the southern parts of the Eastern Cape, and the Western Cape. Eleanore recently secured a long-term contract with Food Lover’s Market, which will help to reduce her market risks, as prices are fixed for a year and she can deliver tomatoes directly after harvesting them. High concentrations can reduce growth as the ions contributing to high EC could compete with fertiliser nutrients for plant uptake. (Best months for growing Tomato in South Africa - Humid sub-tropical regions) S = Plant undercover in seed trays T = Plant out (transplant) seedlings Grow in seed trays, and plant out in 4-6 weeks. Tomatoes are prone to soil-borne diseases caused by fungi, viruses or bacteria. When tomatoes are protected from the elements, they can withstand lower temperatures than they normally would when grown out in the open – even though they do need to be heated if there is going to be protection for the plants and fruit from frost. “These experiences gave me an insight into what is required to be a successful farmer,” she says. These are not suitable for tomato production, because they’re not as tall as the multi-span greenhouse we received from the Western Cape Department of Agriculture. Windows are often incorporated in traditional greenhouse structures, aiding ventilation. Cherry tomatoes can also be grown in large pots and trained on a wigwam or trellis. Computerised fertigation is carried out according to a formula based on the age of individual plants. To date, however, the results achieved have been dismal, with many examples of expensive, government-funded infrastructure being abandoned only months after being erected. and either glass or polycarbonate sheeting. Tomato Plant Nutrition: What Nutrients do Tomato Plants Need? A nursery in Stellenbosch produces the tomato seedlings; this enables Eleanore to concentrate on propagating the plants and growing the crop. From start to finish, we have all the products you need to ensure your grow is optimal. Her workers now regularly scout for any damage indicating the presence of these insects, such as yellowing plant leaves. Ten reasons not to grow tomatoes in high tunnels This article was reprinted with permission from Penn State Extension Vegetable and Small Fruit Gazette. “Growing tomatoes on tomatoes is not the best idea from a soil disease risk management perspective,” said Joe Hannan, commercial horticulture specialist with Iowa State University Extension and Outreach. At the time, Eleanor was working at Boland College in Stellenbosch as a student administrator. Now a favourite with 11,000+ home gardeners in 88 countries! Greenhouse tomatoes are grown in a wide range of structures from simple hoop-houses and high tunnels to more expensive greenhouses with permanent foundations and sophisticated environmental controls. “Werner is always available for advice. Get your copy of our No 1 best seller. Cherry or bush tomatoes will support their own weight without stakes, but larger vine varieties need support. Every good reason to grow tomatoes and other high-return vegetables and small fruits in high tunnels has a compelling argument to counter it, according to a Cornell University Extension vegetable specialist. “My job as a farmer is in effect to monitor whether these applications take place and to scout for problems. The following year, after she fell pregnant with their second son, Jeandré, Bryan persuaded her to resign and take over the tomato operation on their farm while he concentrated on his primary business, a sawmill. As the plants mature, and as the weather grows warmer, more applications are added. Tunnel Tomatoes Atletico, Daniella, Gabriella CULTURAL ASPECTS The production of plants The seed required, to plant one hectare varies from about 100 g to 200 g when using seedtrays, to 250 g if grown in seedbeds and up to about 2 kg if directly sown in the production field. Vine crops like tomatoes require systems that allow for trellising in the greenhouse. “We try to produce a continuous harvest by planting new tomato seedlings in one of these sections every month. It is recommended that picking is done early in the morning and that tomatoes should be moved into the packhouse as soon as possible and not left in a hot area for long periods. Generally tunnels are made by stretching transparent polythene over a series of metal hoops that form the structure of the tunnel. These could be infrastructural problems, such as broken or poorly positioned irrigation pipes, or growth and production problems caused by pests or other factors, such as nutritional deficiencies or climatic conditions.”. The bag is then filled with a growth medium of wood chips. One of the stock warnings professionals give when it comes to growing tomatoes in soil beneath a growing structure is that it needs to be sterilized or regularly replaced. So I’m planning to plant green peppers instead,” she says. Furthermore, great success was achieved by covering the plants with a plastic-clad semi-circular structure, dubbed a “tunnel”. While tunnels are not quite as sophisticated as traditional greenhouses, they do a really good job. They use the sun to warm the crops and can be great for those who grow food in colder climates. “However, the reality is that tomatoes are so valuable in a high value environment like a high tunnel so it is easy to justify the risk.” Large varieties will need a few feet of space to stretch out their stems and vines. Another “advantage” some give is that, because they are not “permanent” you can move them if the soil becomes “diseased”. If you are looking for detailed, easy to understand instructions on all aspects of growing tomatoes, don’t miss our great book, How To Grow Juicy Tasty Tomatoes. Once proof of payment is made, please allow 7 – 14 days for delivery, depending how busy we are at … However you will still need to water the plants, and may want to install an automatic irrigation system. In the 70’s it was found that vegetables could be successfully grown without soil by using nutrient based solutions. In the 70's it was found that vegetables could be successfully grown without soil by using nutrient based solutions. Walk-in tunnels are a much more modern invention, but strangely not necessarily cheaper than a small greenhouse. The photo right shows the tomatoes growing in Easy2Grow AutoPots. One of the joys of growing tomatoes in pots is that they do so well, and if the pots can be moved as the sun moves then one can pick tomatoes well into winter, which is a real bonus. Tomatoes are a seasonal crop with a limited lifespan of 20 to 24 weeks. Price EXCLUDES Delivery which depends on what size tunnel and where. Sterilisation is expensive, however, and we have ample access to wood chips from the sawmill.”. Many of these utilise polycarbonate materials instead of glass. Door to Door. Hi Mark, Stumbling on your site today was an inspiration! “I never imagined myself as a farmer, but taking over the tomatoes presented an opportunity to be my own boss and work more flexible hours,” she recalls. We courier them all over South Africa. HYDROPONICS IN TUNNEL FARMING What is tunnel farming? “You have to clean the planting area thoroughly and use new growth medium to prevent a build-up of harmful organisms that could damage production,” Eleanore explains. On average, young plants receive fertigation three times a day for six minutes at a time in winter. After leaving school, she had completed a bookkeeping course and had subsequently been employed on the farm to assist in the office. Growing solutions. Growing tomatoes directly in a compost bag is a popular technique, but they do need constant watering. A factor in Eleanore’s favour was that she had grown up on a farm near Grabouw, where her father had been employed as a farmworker and had kept his own vegetable garden. We opened our 1st walk-in store in 2014. Get our FREE GUIDE to Common Tomato Problems. To ensure long-season production of indeterminate varieties, greenhouses need to include crop supports and have the structural strength to carry the weight of a heavy crop, whilst providing the … I’m going to walk you through how a high tunnel works, what grows best in a high tunnel, how you compensate for poor weather by using a high tunnel, and more. This was the first outbreak of potato tuber moth in the region, and Eleanore has since adapted production to prevent future outbreaks. Tomato production in South Africa employs between 25 000 and 28 000 people a year, with increased numbers during the summer months when production volumes are higher. This is sold at farm stalls in the region. He empowers me with knowledge and in effect helps to continually improve my farming skills,” Eleanore says. Nevertheless, in South Africa food insecurity still exists. Single-or Multispan tunnels can be provided to our clients. So why not do a bit more homework before you decide which way to grow tomatoes at home? The thing is that tunnels are usually quite large, having been developed for commercial use. Growing of tomatoes in tunnels is still on the increase as an important cultivating method in South Africa and at present, about 100 ha of tomatoes are grown in tunnels. Before growing tomatoes for the first time, do market research in your community to see what types of tomato are popular among farmers and sell well. Greenhouses are permanent structures and can be very attractive features in the garden. Greenhouses, however, are more frequently built with a solid concrete floor and then the plants are propagated in growing bags. Original greenhouse designs originating during the Victorian era were expensive structures that were made with steel and glass. Therefore it is recommended to avoid growing tomatoes on plots that used for other sensitive crops (peppers, eggplants, Irish potatoes, sweet potatoes, cotton, soybeans and others) on recent years. Tomatoes that need to be shipped a long distance are harvested at a less mature stage while for local marketing the fruit is picked at a more mature stage. Made on order and delivered all over South Africa. Eco Tunnels are perfect to grow your own all year round. While production suffered a setback, it is recovering slowly, with four sections now planted to tomatoes that will be ready for harvesting in a matter of weeks. Other growers plant through holes cut in weed-inhibiting ground cloth. To get a good harvest, and the maximum amount of fruit, it is best to grow under cover in a polytunnel or greenhouse. I was forced to destroy all the plants in the greenhouse to eradicate this devastating pest,” she says. In 2012, Eleanore’s husband, Bryan, received government funding to erect a multi-span greenhouse for tomato production on their 9ha smallholding, Compagniesdrift. DIY tunnels are available and easy to erect. “I bought the tunnels second-hand from a farmer who retired due to health problems. Growing Tomatoes in Greenhouses and Tunnels Greenhouses and less sophisticated tunnels provide excellent growing conditions for tomatoes, even when temperatures are not closely controlled. “The computer regulates the volume of water and fertiliser that has to be delivered, as well as the timing of these applications,” Eleanore says. High tunnels and greenhouses also provide a protected growing environment for plants which increases the potential for higher yields and more uniform fruit. Suppliers of Greenhouses, Tunnels & Hydroponic Systems. The farming operation currently consists of a 3 400m2 multi-span greenhouse divided into sections, each containing about 1 000 tomato plants. Undercover crop production has long been touted as a viable option for uplifting and empowering new farmers. Shelter in greenhouse and tunnel structures unfortunately doesn’t translate to protection from pests and diseases. Tomato Plant Spacing 101: How to Calculate the Optimal Spaces. They are usually the same kind of height as a regular shed and so are tall enough to grow high-growing tomato plants. “You not only need to work hard and know what you’re doing on the farming side; you also need skills such as the management of people and finances, as well as logistics, business planning and the marketing of produce.”. Greenthumb Hydroponics is South Africa’s premium grow-shop. Alan improved the farm’s infrastructure, and after farming open fields for a few years, erected a number of tunnels to grow tomatoes hydroponically. Greener Solutions has exceptional experience in delivering commercial greenhouse projects in South Africa and the SADC region. A Quadgrow Planter is farther down on the right. © 2020 Farmer's Weekly Magazine | Caxton Magazines Digital |, From novice farmer to successful tunnel producer, Land beneficiaries’ 20-year struggle for government help, Breeding seasons in summer rainfall areas, Healthy food is becoming increasingly unaffordable, Building a mega business through egg production, Growing garlic: a golden opportunity for SA farmers, Good wheat year ahead, but climate uncertainty prevails, Table grapes yet to experience full impact of COVID-19, Avocados remain buoyant amid ‘insatiable demand’, ‘Consumer spending will determine poultry sector’s fortunes’. 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