NEWS Disease resistant mushroom growing ‘D
isease resistant mushroom growing’ is the title of a project that is a collaborative effort between Bas van Buuren/ Euroveen, CNC/c4c, TopTerra, Lambert Spawn Europa,
Amycel, Sterckx and Walkro. The project is motivated by the incre- asing incidence of casing soil-related diseases in mushroom growing.
Other concerns are the restricted availability and effectiveness of crop protection products and the availability of peat sources. The problems mainly manifest as blotches and blemishes on the mushrooms, related to the casing soil, and lower mushroom quality. The damage can be extensive, and the precise causes are unclear. These problems affect all stakeholders in the chain, as the margins will shrink further. Casing soil is a vital element in mushroom gro- wing, as its reliability and consistency hugely influence the yield and quality. The basic component of casing soil is peat, and being granted a permit to excavate is also becoming more difficult. This forces the price up and further weakens the competitive position of growers in West Europe.
Purpose of the project Finding alternatives for peat in casing soil is a long, complex and expensive quest. Research into other types of peat is also complica- ted, and cannot simply be solved by just one company’s efforts. The purpose of the project is to provide the participants with insight into the population dynamic of pathogens and useful micro-organisms in
compost and casing soil, the circumstances under which pathogens cause symptom development in mushrooms and to create an optimal technical strategy for casing soil, growing and climate control that will result in disease-free mushroom production. The results can be used in breeding programmes, selecting raw materials for casing soil, recipes for casing soil blends and to optimise and control the cultivation conditions. Concrete results should be obtaining indicators for abiotic and biotic factors that play a role in resistance to the main pathogens, a metho- dology to quantitatively detect and identify Pseudomonas strains that cause blotches, providing insight into the damage thresholds for Pseudomonas and wet bubble and establishing soil sampling protocols for casing soil in the various cultivation phases. Knowledge can also be gained on the impact of using alternative substrates on the incidence of disease, and whether a tolerance or resistance to bubble or bacterial blotch is present in commercial, or wild, new varieties. The project will run for four years, with the emphasis in the first two years on detection and sampling. The second stage of the project will concentrate more on controlling and steering the objectives mentioned above. Caroline van der Horst, R&D director at C4C Holding and the project secretary: “This is a unique project in that it unites all the Dutch and Belgian casing soil producers as participating parties. The project has already been assigned and started in January 2016.” Van der Horst can be contacted at: C.vd.
Horst@c4cholding.com
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From nature to nature. Een gegeven waar Hooymans Compost B.V. al jaren zorgzaam mee omgaat. Het natuurlijke proces van composteren wordt dankzij innovatieve technieken geoptimali- seerd waarbij altijd de hoogste kwaliteit wordt nagestreefd.
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