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Master Thesis

Évaluation et apports de la technologie de semis Precision Planting pour la culture du maïs dans une démarche d’agriculture de précision

Abstract : Innovative planter technology is a growing business for machinist. Among the most complex planter system, Precision Planting (PP) provides elements to tune planter already existing and promise to increase corn yield by improving the quality of seeding operation. Several field trials were conducted in Brittany, France to assess the seeding quality of PP technologies under different soil-climate and technical context. Different settings were set on the planter and tested in order to find which setting is the best suitable depending of the context. We also compared with the seeding quality of other corn planter to quantify the value added by PP technologies. Planters studied performance were assessed on both spatial and temporal distribution: spacing between corn stalk, seeding depth and speed and uniformity in emergence. The potential for precision agriculture which is brought by PP technologies was also investigated, especially soil organic matter prediction using ground truthing method. Results show that PP corn planter performs well in every circumstances. Moreover, downforce control system appears to be necessary to keep high seeding quality while increasing forward speed, with no downforce control system, the spatial distribution is negatively affected at high speed planting with for instance a miss index of 1% at 8 km/h to 7% at 14 km/h. When compared to another planter, PP planter performs best in speed of stand establishment and led to 4% of more plant by unit of area. Regarding soil organic matter prediction, we found that soil organic matter fraction was sometimes underestimated. We concluded that the prediction was not accurate enough and the model needed calibration laboratory measured soil sample. Methods to investigate the dynamic of emergence and as-planted PP’s data were proposed. Further research should concentrate on as-planted data valorization.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-03053413
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Submitted on : Friday, December 11, 2020 - 8:44:57 AM
Last modification on : Sunday, February 21, 2021 - 3:22:30 AM
Long-term archiving on: : Friday, March 12, 2021 - 6:34:14 PM

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Thibaut Simon. Évaluation et apports de la technologie de semis Precision Planting pour la culture du maïs dans une démarche d’agriculture de précision. Sciences du Vivant [q-bio]. 2020. ⟨dumas-03053413⟩

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