1999
DOI: 10.4035/jsfwr.34.113
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Development of Labor Saving Operation Technique by Making Large Scale Paddy Field and Direct Seeding Cultivation of Rice in Tohoku District. Part 2. Development of Technique for Automatic precision Laser-Levelling System.

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Cited by 3 publications
(3 citation statements)
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“…In such cases, the depth of the original topsoil and the yield of rice may vary within a field for more than a generation (Ohnishi et al 2001). Furthermore, when the area of a field is enlarged, it becomes difficult to maintain a flat surface in the field, although it is important for the homogenization of water supply, seedling establishment and initial rice growth (Yamaguchi et al 1967;Kimura et al 1999;Sasaki et al 2002) and also to control weed proliferation (Shoji et al 2013).…”
Section: Introductionmentioning
confidence: 99%
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“…In such cases, the depth of the original topsoil and the yield of rice may vary within a field for more than a generation (Ohnishi et al 2001). Furthermore, when the area of a field is enlarged, it becomes difficult to maintain a flat surface in the field, although it is important for the homogenization of water supply, seedling establishment and initial rice growth (Yamaguchi et al 1967;Kimura et al 1999;Sasaki et al 2002) and also to control weed proliferation (Shoji et al 2013).…”
Section: Introductionmentioning
confidence: 99%
“…Precision agriculture is generally defined as the application of technologies and principles to manage spatial and temporal variability associated with all aspects of agricultural production, for the purpose of improving crop performance and environmental quality (Pierce and Nowak 1999). For example, land leveling with a laser leveler has become a popular method for land management in consolidated paddy fields (Kimura et al 1999). Based on this background, researchers in Kyoto University carried out joint research in the late 1990s for the application of precision agriculture to a consolidated paddy field located in Experimental Farm, Kyoto University.…”
Section: Introductionmentioning
confidence: 99%
“…Through leveling by a 53.8-kW (73PS) tractor using a technique developed for automatic precision laser-leveling, in a 1-ha field, an elevation range of 16 cm was improved to ± 2.5 cm (s.d. = 15.8 mm) over 92% of the field (Kimura et al 1999). In a study of the effect of unevenness in a paddy field on tiller development of direct-seeded rice in Niigata Prefecture, one laser-leveling operation improved the leveling precision from s.d.…”
mentioning
confidence: 99%