Growing raspberries on the same site for many years is an increasingly common problem on modern tunnel farms. High investment costs mean that growers cannot afford several years of soil interruption or the use of classic forecrops. Under such conditions, effective management of the soil microbiome becomes crucial. <\/p>\n\n
The Raspberry Factory project in Karczmiska conducted an experiment to test whether the use of beneficial microorganisms can reduce the effects of soil fatigue and improve the productivity of raspberries of the Enrosadira variety.<\/p>\n\n
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The study plot was planted in 2025, but the site itself had been used for raspberry cultivation for more than a dozen years. First it was a field crop, then a tunnel crop. For most of the time, the soil remained in continuous use for raspberry. <\/p>\n\n
Such intensive exploitation leads to so-called replantation disease and biological disturbances in the soil. Symptoms of stand fatigue can include: <\/p>\n\n
Due to the impossibility of performing classical fumigation, it was decided to biologically support the soil through the use of beneficial microorganisms.<\/p>\n\n
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In cooperation with our Ceres experts, two microbiological preparations were used:<\/p>\n\n
Sphera<\/a><\/strong><\/p>\n\n Preparation containing:<\/p>\n\n Mycorrhiza promotes the development of the root system and increases water and nutrient uptake capacity. Under stressful conditions, this can significantly improve plant health. <\/p>\n\n Triash<\/a><\/strong><\/p>\n\n Preparation based on three strains of Trichoderma:<\/p>\n\n These fungi compete with soil-borne pathogens for space and food, limiting the growth of diseases such as pythium and fusarium.<\/p>\n\n <\/p>\n\n The formulations were applied after planting through the irrigation system.<\/p>\n\n Key application principles:<\/p>\n\n After application, it is recommended to flush the irrigation system to avoid the multiplication of fungi in the drip lines.<\/p>\n\n <\/p>\n\n The results of the experiment proved very promising.<\/p>\n\n Observed:<\/p>\n\n Importantly, the increased number of fruits did not result in a reduction in fruit weight. Plants maintained good fruit quality while productivity increased. <\/p>\n\n <\/p>\n\n Analysis of the plants showed that the application of the microbial program affected:<\/p>\n\n In practice, this meant a higher number of fruits on each shoot while maintaining yield quality.<\/p>\n\n <\/p>\n\n The cost of applying the technology was about PLN 1,000\/ha. According to the economic analysis, the first harvest has already covered the cost of applying the preparations thanks to the acceleration of yield and increase in the amount of fruit. <\/p>\n\n This shows that biological support of the soil microbiome can be not only an effective, but also an economically viable solution for tunnel raspberry growers.<\/p>\n\n <\/p>\n\n Multi-year cultivation of raspberries on the same site does not have to mean a decline in plantation productivity. Properly selected microorganisms can effectively promote the restoration of soil biological life, improve the development of the root system and reduce the effects of soil fatigue. <\/p>\n\n Experiments conducted in the Raspberry Factory project show that microbial technologies can become an important part of modern raspberry production in tunnels. The products discussed in the video can be purchased here: Beneficial Microorganisms – Ceres.co.uk<\/a> <\/p>\n\n We encourage you to watch the video prepared by berodnik.pl<\/a>, in which our expert Tomasz Szu\u0142awy talks about how to restore the biological activity of the soil with the use of microorganisms. \n
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Microorganism application technology<\/strong><\/h2>\n\n
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Effects of the experiment – yield increase of up to 33%<\/strong><\/h2>\n\n
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Why did microorganisms improve yields?<\/strong><\/h2>\n\n
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Quick return on investment<\/strong><\/h2>\n\n
Summary<\/strong><\/h2>\n\n