Evaluating spray techniques and their spray distribution in a high maize crop to control Western Corn Rootworm (Diabrotica)
Western corn rootworm (Diabrotica virgifera virgifera) is a quarantine pest in the Netherlands. An inventory is made of potential field spray techniques usable in high maize (>1.75 m). Spray techniques identified potentially usable in high maize crop spraying were: air-assisted spraying, high volume/coarse spray quality spraying, drop hose spraying, and drop hose spraying combined with conventional over the top of the canopy spraying. Spray deposition measurements were done for the selected spray techniques in a 2.5 m high maize crop using a fluorescent tracer. Spray distribution in the maize crop is shown to be different for the spray techniques used. Drop hose spraying in combination with over the top conventional spraying showed to have the most even spray distribution over crop height. Conventional spraying, air-assisted spraying and high volume and coarse spraying had a steep decline in spray deposition over height of the maize crop, with 40-50% of spray deposit in the top 0.50 m of canopy. The combination of a drop hose spray technique in combination with conventional on top spraying looks most perspective to control Diabrotica in a high maize crop.
| Main Authors: | , , , |
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| Format: | Article/Letter to editor biblioteca |
| Language: | English |
| Subjects: | Life Science, |
| Online Access: | https://research.wur.nl/en/publications/evaluating-spray-techniques-and-their-spray-distribution-in-a-hig |
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