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- W4294908039 abstract "AbstractSoil mapping technologies are required to visualize spatial and temporal variability between fields or within field. Proximal and nondestructive soil sensing coupled with GPS using visible and near-infrared (Vis-NIR) spectroscopy or electrical conductivity sensor (soil EC) is a promising approach. A series of tractor-mounted soil-analyzing systems based on Vis-NIR spectroscopy were developed. The structure of the systems is mainly composed of a connection unit (three-point hitch structure), a sensing unit, and a soil penetration part. In the sensing unit, a Vis-NIR spectrometer (NIR enhanced: 310–1100 nm, 3.1 nm/pixel interval), a halogen lamp, thermometers, and a personal computer are installed. The load cell provides cutting resistance measurement and automatic retreat function of the soil-penetrating part due to overloading. In the sensor probe box, a color microcamera head, a radiation/light-concentrating fiber, a displacement meter, and an air blow head are equipped. Estimation models of 33 soil parameters, including moisture content, total carbon, total nitrogen, and soil organic matter, were established with the spectral reflectance data obtained by the tractor-mounted soil-analyzing systems. The result shows the higher multiple calibration accuracy. A smart rice transplanter was developed, which could measure soil EC (apparent electrical conductivity) and topsoil depth. The fertility of the soil varies due to uneven distribution of compost or soil conditioner, and these variations will result in crop lodging at harvest time. The smart rice transplanter developed solves this lodging problem with soil EC data and performs real-time variable fertilizer application.KeywordsProximal soil sensingVis-NIR spectroscopySoil mappingSoil electrical conductivitySoil sensor" @default.
- W4294908039 created "2022-09-07" @default.
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- W4294908039 date "2022-01-01" @default.
- W4294908039 modified "2023-10-17" @default.
- W4294908039 title "Application of Soil Sensing in Precision Agriculture" @default.
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- W4294908039 doi "https://doi.org/10.1007/978-3-030-70432-2_4" @default.
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