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.

Kimura, Shoichi; Imazono, Sasakazu; Yaji, Yukio

doi:10.4035/jsfwr.34.113

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%

“…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%

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Decadal sustainability of spatial distribution of soil properties in a paddy field as a fingerprint reflecting soil-forming factors and field management

Moritsuka

Katsura

Matsuoka

et al. 2015

Soil Science and Plant Nutrition

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Spatiotemporal variations of soil properties were measured in a Japanese paddy field in order to evaluate how they were created and sustained through various field managements. The field was subjected to land consolidation during 1960s, heterogeneous application of manure in the late 1970s and land leveling in 1986, 1987 and 2003. Surface soils were collected from throughout the field in 2002 and 2012, and the physicochemical properties were analyzed. Additional analyses were carried out for relative altitude in 1986, 1999 and 2012, and soil hardness in 2012. In the field examined, the distribution of field attributes reflected past field managements. The heterogeneous distribution of relative altitude was partly explained by the passage of agricultural machinery, whereas the heterogeneous distribution of soil organic matter was partly explained by both past and recent applications of animal dung manure. In general, the measured soil properties were maintained from 2002 to 2012, and the pattern of spatial distribution did not change significantly for many of the properties. The correlation coefficient of the distribution patterns between 2002 and 2012 was highest for yellowness (0.95), followed by sand (0.90), acid-oxalate extractable iron (Fe; 0.88), available phosphorus (P; 0.87), redness (0.82), lightness (0.77), sand-size organic matter (0.74) and total nitrogen (N; 0.72). Land leveling carried out in 2003 barely influenced the distribution of these properties. Among these properties, soil color parameters and sand content can be measured rapidly without reagents and will be useful for characterizing paddy fields according to the distribution of stable soil properties. The analysis of the natural abundance of 15 N in soil was also effective to suggest the contribution of the application of animal dung manure to the accumulation of soil organic matter at a within-field scale. It can be concluded, as a general rule, that each paddy field has its own fingerprint which is unveiled by precise soil sampling and analyses of stable properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decadal sustainability of spatial distribution of soil properties in a paddy field as a fingerprint reflecting soil-forming factors and field management

Moritsuka

Katsura

Matsuoka

et al. 2015

Soil Science and Plant Nutrition

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“…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.…”

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Evaluation of Soil Hardness in Paddy Fields by Cone Penetrometer as a Simple Soil Physical Diagnosis Method

Ebato

2020

Agricultural Information Research

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To enable quantitative soil physical diagnosis by cone penetrometer, this study investigated time-course changes in the three-dimensional (3D) distribution of soil hardness and quantified the effect of land leveling on soil compaction. The most important result is that the 3D distribution of soil hardness in the field can be mapped quickly. One person could survey 1 ha to 60 cm depth in 90 min. The method allows several fields to be screened in a short time. The results of cluster analyses based on the horizontal distribution of soil hardness show that the distribution did not change significantly throughout the year. Although absolute values can change, this method can be used to measure soil hardness at any time of the year. Measurement of soil hardness by depth can detect the range or position of the plow pan. Comparison of the distribution of soil physical properties between fields revealed that field management affects hardness, especially in the plow layer and plow pan.

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Direct Seeding of Rice

Kumar¹,

Ladha²

2011

Advances in Agronomy

590

191

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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.

Cited by 3 publications

References 0 publications

Decadal sustainability of spatial distribution of soil properties in a paddy field as a fingerprint reflecting soil-forming factors and field management

Decadal sustainability of spatial distribution of soil properties in a paddy field as a fingerprint reflecting soil-forming factors and field management

Evaluation of Soil Hardness in Paddy Fields by Cone Penetrometer as a Simple Soil Physical Diagnosis Method

Direct Seeding of Rice

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