P ota t o w or ld CONTENT: Journal for the Potato sector • number 2 • 2014 Organic crop protection chemicals are gaining ground throughout the world > page 5 9 PW-Actua 20 Potato starch in bioplastics is popular 23 Breeding pioneer Niek Vos pushes the boundaries 29 First experiences with Controlled Release Fertiliser in the cultivation of seed potatoes are promising 34 Cross planting gives more same-size tubers 37 The World of PotatoResearch 38 PotatoWorld dish 38 PW Agenda Dutch seed improves Kenyan potato chain > page 15 Natural limitation Increasing attention is being paid to organic plant protection chemicals based on natural substances. Worldwide, the turnover of these new products has already increased to 1.3 billion dollars, 40 percent of which is sold in America. It is remarkable that the big crop protection chemical businesses are heavily investing in this product. Natural remedies are still often limited in that they are not yet 100 percent reliable. If you want support and understanding for such new products in daily practice, practical adjustments and effective communication will be required. Challenges for the sector are not only found in the chemical domain, fertilisation also has a say in the matter. It seems that in the Netherlands squaremetre technology as we already know it from horticulture is increasingly being used here as well. This month, you can find in the columns of our journal terminology such as ‘controlled release fertiliser’, space-specific fertilisation. All this precise rooting about in the soil is necessary to ensure the plant develops in an optimal way. The object is to have the right nutrients available at the right moment. All in all, this is quite a lot for the practical potato grower to have to deal with. How can you deal with such a situation and also continue to supply high-grade quality, just as we’ve been used to in the potato sector? Sometimes, the joint sector takes it up and sometimes the initiative comes from the growers themselves. This applies to seed potato grower Durk Bierma. At his seed potato farm, he is testing whether cross-planting in a 90 centimetre ridge yields better for the expensive seed potato sizes. Now, and in the future, it is important to change gear quickly. Innovations follow each other at a very fast tempo. Jaap Delleman Potato World 2014 • number 3 3 Pagina 2
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