JOURNAL of the JAPANESE SOCIETY of AGRICULTURAL MACHINERY

ESSAY

[title in Japanese]

K. KOTAKE

2013 Volume 75 Issue 6 Pages 335-336
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.335

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SUMMARY OF AWARD PAPERS

[title in Japanese]

K. SHIGETA, T. KIDA, M. MATSUO

2013 Volume 75 Issue 6 Pages 337
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.337

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[title in Japanese]

T. KONYA

2013 Volume 75 Issue 6 Pages 338
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.338

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[title in Japanese]

T. GOTOH, T. TESHIMA, Y. FUJII, N. NAGASAWA, M. OHNISHI, J. ENDOH, K. ...

2013 Volume 75 Issue 6 Pages 339
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.339

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[title in Japanese]

M. SAITO, K. TAMAKI, K. NISHIWAKI, Y. NAGASAKA

2013 Volume 75 Issue 6 Pages 340
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.340

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SPECIAL EDITION

GNSS based Guidance Technology for Agricultural Vehicle

Y. MATSUO

2013 Volume 75 Issue 6 Pages 341
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.341

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Agriculture Vehicle Guidance Technology of Geosurf

Akio TAKEZOE, Keiichi INOUE

2013 Volume 75 Issue 6 Pages 342-345
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.342

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TOPCON’s GNSS Guidance Technology for Agricultural Vehicle

Tsuyoshi YOSHIDA, Koichiro FUSE

2013 Volume 75 Issue 6 Pages 346-350
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.346

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Trimble’s GNSS Guidance Technology for Agricultural Vehicle

Kentaro KUMANO

2013 Volume 75 Issue 6 Pages 351-353
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.351

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GPS Based Simple Guidance System Designed for Fertilizer Spreaders

Kazunobu HAYASHI

2013 Volume 75 Issue 6 Pages 354-357
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.354

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TECHNO-TOPICS

Solar Powered Yam Planting Machine

T. TAMURA

2013 Volume 75 Issue 6 Pages 358-360
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.358

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ISEKI Tractor-GEAS NTA Series

M. TAKAHASHI

2013 Volume 75 Issue 6 Pages 361-363
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.361

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MINI REVIEW

Techniques for Ensuring the Safety and Quality of Food and Agricultural Products— Part 2 Non-destructive Detection of Abnormal Eggs and Its Application —

K. NAKANO, Y. USUI

2013 Volume 75 Issue 6 Pages 364-368
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.364

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PAPERS (Articles)

TECHNICAL PAPERS

A Preliminary Study of Rice Quality Determination using a Portable Instrument ——Protein and Moisture Content Determination of Rice using Near-Infrared Spectroscopy——

Motoyasu NATSUGA, Misato WATANABE, Takumi KAWABATA, Mitsuhiko KATAHIRA

2013 Volume 75 Issue 6 Pages 393-402
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.393

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As an initial step in developing a portable rice-quality analyzer, we developed sampling-free measurement probes for determining the protein and moisture content of rice using near-infrared spectroscopy and applied them to brown and milled rice with/without packaging. The results showed that although the accuracy was inferior to that of a whole-grain transmission near-infrared analyzer, the accuracy with/without packaging was sufficient for both inspection and quality checks in a market. We also tested paddy rice, but found that the accuracy for paddy rice was inferior to that for brown and milled rice and concluded that the probes have to be improved for paddy rice.

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Fundamental Studies on Exhaust Gas Evaluation Techniques forAgricultural Tractors Engaged in Rotary Tillage Work (Part 2) ——Method and Accuracy of Modeling Engine Torque Using a Dynamometer——

Kazufumi SHIMIZU, Jun NISHIKAWA, Yosuke MATSUO, Tsukasa TESHIMA, Takes ...

2013 Volume 75 Issue 6 Pages 403-409
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.403

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We studied methods of evaluating tractor gas exhaust while engaged in rotary tillage, a common agricultural task in Japan. In this report, we investigated the accuracy of modeling engine torque during rotary tillage in the field by applying loads to the PTO shaft of a tractor using a dynamometer. It initially proved difficult to model loaded engine torque accurately, since there is variability in the reproducibility of engine torque due to differences in engines, tractors, the dynamometer, etc. However, we were able to successfully model the loading method by sorting and applying the system torque components in stepwise fashion.

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Fundamental Studies on Exhaust Gas Evaluation Techniques forAgricultural Tractors Engaged in Rotary Tillage Work (Part 3) ——Exhaust Gas Measurement during Engine Torque Loading with a Dynamometer——

Kazufumi SHIMIZU, Jun NISHIKAWA, Yosuke MATSUO, Tsukasa TESHIMA

2013 Volume 75 Issue 6 Pages 410-417
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.410

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We studied methods of evaluating tractor exhaust emissions while engaged in rotary tillage, a common agricultural task in Japan. In this report, we investigated the exhaust gas emissions by modeling engine torque during rotary tillage in the field by applying loads with a dynamometer to a tractor PTO shaft. We were able to model the loading method by sorting and applying the system torque components in stepwise fashion, and confirmed that it was feasible to measure emitted gases using this method. It was also evident that the load obtained in two or more fields could be compounded, resulting in time savings. Our result demonstrate that it is possible to apply an average load that represent rotary tillage and other agricultural tasks.

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Fundamental Studies on Exhaust Gas Evaluation Techniques forAgricultural Tractors Engaged in Rotary Tillage Work (Part 4) ——Exhaust Gas Evaluation Method——

Kazufumi SHIMIZU, Jun NISHIKAWA, Yosuke MATSUO, Tsukasa TESHIMA

2013 Volume 75 Issue 6 Pages 418-425
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.418

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We studied methods of evaluating tractor exhaust gas while engaged in rotary tillage, a common agricultural task in Japan. In this report, we looked at the loading position of engine torque. We applied our exhaust gas evaluation method in relation to loading method by sorting and applying the system torque components in stepwise fashion. Using this method, the quantity of emitted gases was elucidated for every operating range of the engine, making it possible to express emissions as a function of operation range, together with fuel consumption. We are also measuring and accumulating a mass of engine torque and the gases emitted during various types of work that may be of use for evaluating agricultural machinery in general.

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Effects of Drainage Improvement for Sugarcane Fields by Subsurface Drainage and Subsoiling

Yoshiaki SHINZATO, Koitiro FUKAMI, Satoru YAMAGUTI, Masami UENO

2013 Volume 75 Issue 6 Pages 426-433
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.426

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We investigated improvement methods and their effects on poorly drained Jaagaru soil which was resulting in reduced sugarcane production. The tilling capacity of the wide-chisel subsoiler tested was about two times higher than that of conventional plowing. The range of soil loosening reached to a depth of about 55 cm. The sugarcane yield was increased although the size of the soil clods produced by tilling and the germination ratio were almost same as those for the conventional process. The increase in sugarcane yield produced by subsoiling in Jaagaru fields after mechanical harvesting was about 10 %. It appears that the improvement in drainage properties was the main cause. The yield of sugarcane was increased by about 30 % through a combination of subsoiling and subsurface drainage even in Jaagaru soil with extremely poor drainage. However, no effect was observed by subsoiling alone. The cost of subsurface drainage using a trencher attached to a tractor was about 220,000 yen/10 a.

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Development of Potato Haulm Remover (Part 1) ——State of Potatoes at Harvest and the Effects of Different Haulm Removal Methods on Potato Quality——

Hideo KAINUMA, Jun AOKI, Takesi SUZUKI, Masatosi OONAMI, Makoto KAMATA ...

2013 Volume 75 Issue 6 Pages 434-439
Published: November 01, 2013
Released on J-STAGE: December 03, 2014

DOIhttps://doi.org/10.11357/jsam.75.434

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We have developed a potato haulm remover for use before harvesting that leads to higher yields of superior-grade potatoes. In the process of designing this machine, we investigated the characteristics of several common potato cultivars, including stem length and the power needed to pull out the plant. We report the results here. We also studied the effects of different haulm removal methods on the rate of damage to the potato skins. In plots where only the haulm was shredded before harvest, the rate of superior-grade potatoes was 72.2 %, whereas in plots processed using our developed machine, which pulls out both haulms and stolons, the rate of superior-grade potatoes was 95.8 %. Our test results indicate that the use of our developed machine, which pulls out both haulms and stolons, results in less surface damage to the potatoes and thus a better yield.

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