Physical and Cultural Weed Control Working Group of - European ...

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9 th EWRS Workshop on Physical and Cultural Weed Control 94 Samsun, Turkey, 28 – 30 March 2011 weed emergence during the first weeks after crop emergence in small seeded direct-sown crops and methods to control in-row weeds with high selectivity. Round table discussion After a general introduction we focussed on discussing a few topics. We concluded that small scale technique for weed control is interesting for small scale farmers regardless of country. There are many examples of farmers having 1-3 hectares, often many crops, who have neither the financial means nor the skill to work and invest in expensive machinery. Nevertheless, they are interested in decreasing the use of hand weeding. The machines should be adapted to local conditions. These conditions comprise both agronomical conditions such as soil and crop, as well as the skill of the farmer and his ability to repair and maintain the equipment. In some geographical areas chemical weed control is the method most used. Hence, to replace spraying, the non-chemical technique must be introduced to the farmers and supported by education and sometimes with economic support. Pieter Bleeker from the Netherlands initiated a discussion on some specialised techniques by highlighting some research on cluster seeding and mulching. Cluster seeding is a novel technique that seems promising for direct seeding of bulb onions. Dutch experiments have shown the possibility to use this method in organic production. Mulching on top of the seeds is another promising technique. A specialised machine for large scale production is developed and evaluated in the Netherlands in cooperation between a farmer, a machinery company and weed scientist. A 2 cm layer of weed-free compost is applied on top of the seeds instead of ordinary topsoil. The crop seeds are thus emerging through a weed-free compost layer. The Dutch results so far have shown about 80 per cent weed reductions. A similar technique is evaluated in Sweden.
9 th EWRS Workshop on Physical and Cultural Weed Control 95 Samsun, Turkey, 28 – 30 March 2011 Automation in crop and weed assessments – what does it mean to mechanical weed control? V Rueda-Ayala & J Rasmussen After a short introduction to automation in crop and weed assessment (from simple image analysis programmes to advanced sensor systems), experiences within the use of automation are shared among the round-table participants, within the context of mechanical weed control. The following questions are proposed for discussion: What are the current possibilities for real time assessments? What are the utility values? What kind of developments in assessments do we need in order to improve mechanical weed control? How to translate the assessed data into a model to develop algorithms for automation?; and, Are we ready to make use of data from automation in crop and weed assessments? If time allows, ideas about future decision support systems based on real time assessments of crop and weeds will be shared.
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Physical and Cultural Weed Control Working Group of - European ...

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