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| Home > Publications database > OG Precision horticulture: Optimization of lettuce production through the use of precision detection and application of pesticides |
| Home > Publications database > OG Precision horticulture: Optimization of lettuce production through the use of precision detection and application of pesticides |
| Poster (Invited) | FZJ-2017-07609 |
2017
Abstract: Practical problem: Lettuce cultures are routinely pesticide-treated to avoid widespread infestation with aphids which are not tolerated by consumers. An automated identification of infestation events would allow for selective spraying which reduces the costs for pesticide treatments and levels of pesticide residues.Project objectives: We aim to identify suitable sensors and algorithms for the remote detection of aphid-infested lettuce plants and to develop an improved spraying device for small-scale application of pesticides. Both techniques will be combined in a tractor-borne setup for the selective spraying of aphid-infested lettuce plants.Expected results: We expect that the biotic stress response of lettuce plants to aphid infestation leads to altered spectral reflectance signatures of the lettuce leaves. Suitable sensors and algorithms will be selected to remotely detect aphid-infested plants. Furthermore, we will develop a custom designed spraying installation for individual plants by combination of high-precision valves and jets for small-scale application of pesticides.Results so far: In a first experimental approach, lettuce plants with different infestation intensities of the polyphageous potato aphid (Macrosiphum euphorbiae) were cultivated to do comparative spectral reflectance measurements. Furthermore, a detailed study of lettuce morphology and growth patterns was basis for the establishment of a technical test facility to develop the spraying device.Who will benefit: Farmers can reduce costs for pesticide treatments, and consumers benefit from products with lower pesticide residues.
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