In vitro solid-state production of Steinernema innovationi with cost analysis |
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Authors: | Tshimangadzo Ramakuwela Justin Hatting Mark D Laing Selcuk Hazir Nicolene Thiebaut |
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Institution: | 1. ARC-Small Grain Institute, Bethlehem, South Africa;2. School of Agricultural, Earth and Environmental Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa;3. Department of Biology, Faculty of Arts and Sciences, Adnan Menderes University, Aydin, Turkey;4. ARC-Central Office, Pretoria, South Africa |
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Abstract: | Low-cost mass production of entomopathogenic nematodes (EPNs) is an important prerequisite towards their successful commercialisation. This study evaluated six low-cost solid substrate media for in vitro mass production of Steinernema innovationi. Cost analysis was undertaken and an estimated retail price was calculated. This was then compared to the costs of commercial EPN products currently on the market. The highest yield of infective juveniles (IJs) was obtained from a medium containing a puree of house fly, Musca domestica, larvae?+?0.15?g canola oil, (781,678?±?221 IJs/5?g medium). This medium also had the lowest number of adults remaining in the medium and dead IJs (<10%) at the time of harvest (Day 28). The estimated retail price (R243.27 per 50 million IJs) for S. innovationi produced with our solid culture system was considerably lower than the market price for other Steinernema species products sold by E~nema, BASF corporation, Koppert, BioBest and Natural Insect Control. The production system developed in this study offers a competitive technology to produce EPN products without having to invest in large-scale liquid fermentation equipment, by using a relatively cheap production medium and simple solid culture growing conditions using Erlenmeyer flasks. |
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Keywords: | Entomopathogenic nematodes mass production nematode yield cost analysis in vitro monoxenic culture |
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