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Volume 26 (1991)
- Issue 3 Pages 170-
- Issue 2 Pages 90-
- Issue 1 Pages 1-
Volume 26, Issue 3
Displaying 1-5 of 5 articles from this issue
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Harvesting of the Preceding CropsToshio FURUCHI, Masafumi MITARAI1991 Volume 26 Issue 3 Pages 170-175
Published: November 20, 1991
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSDownload PDF (2272K) -
Stubble Breaking of the Preceding Crops and Weeding of the Succeeding CropsToshio FURUCHI, Masafumi MITARAI1991 Volume 26 Issue 3 Pages 176-184
Published: November 20, 1991
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSDownload PDF (2662K) -
Effect of the planting methods on the growth and yield of yaconTeruo TSUKIHASHI, Makoto MIYAMOTO, Norio SUZUKI, Yoshio UTSUGI, Teruo ...1991 Volume 26 Issue 3 Pages 185-189
Published: November 20, 1991
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSCultivation of yacon (Polymnia sonchifolia) has gradually been spreading in Japan. We experimented on the effect of planting methods on the growth and yield of yacon by using a Light-colored Andosol. Two experimental plots were made: plot A in which seed tubers were placed directly into the field soil and plot B in which seedlings were transplanted after raising them.
The results were as follows.
1) Growth of yacon in plot A was faster than that in plot B in the initial stage. But, at harvest, the difference of top fresh weights and dry weights were not significant in both plots.
2) Since the yield of yacon tuber in plot A (46.8t/ha) was much higher than that in plot B (27.8/ha), the method placing seed tubers directly into the field soil will be more suitable to obtain maximum yield.
3) Since more time was used for weed control in plot A than in plot B, investigation of the weeding system will be necessary.View full abstractDownload PDF (649K) -
(I) Simulation of farm work operation on a large-scale up-land farmingTIE ZHONG ZHANG, Junichi YONEMURA, Akira SASAO, Noriaki ISHIZUKA1991 Volume 26 Issue 3 Pages 190-195
Published: November 20, 1991
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSIn this paper, we simulated the farming systems of one farmer in Hokkaido district by using the actual field data and took an estimation of the operation area of crops and the production cost from the point of effective use of agricultural machinery and reducing the cost. In order to make clear the possibility of improvement in farm management, we compared the estimated values by simulating with the national average data. Furthermore, we analyzed the possibility of reducing production cost by expanding the farm scale. The results are as follows.
1) Since the farm machinery owned by the farmer is a little oversurplus for the crop production area in the present situation, the fixed machinery cost is higher than the national average fixed cost.
2) In spite of the higher fixed cost being the cause of over mechanization, the labor cost of the farmer is lower than the national average.
3) The larger machinery system must be allowed since there is labor shortage. However, it is more profitable to expand the cropping area by using the capacity of the machinery system and employing some temporary employees only for the farming seasons.
4) It is possible to enlarge the managing area to 30 ha under the same scale of machinery system. By doing this, the production cost will be reduced much more.View full abstractDownload PDF (757K) -
Statistical analysis of Present Farm AccidentsMunehiro TAKAI, Masaki JINKAWA, Syun-ichi HATA, Satoru NAMBU1991 Volume 26 Issue 3 Pages 196-203
Published: November 20, 1991
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSUnder grant in aid of Hokkaido scientific research in 1990, about 15, 000 of farm accidents data during 1985-1990 in Hokkaido were analyzed. Furthermore, 70 fatal-injured accidents were interviewed during the survey. In this report, the statistical analysis of severe farm accidents was described and following guidance principle against farm safety policy was pointed out.
1) As the number of fatal-injured on the farm accident are less than 40-men a year in Hokkaido, so there is a tendency to think light of the farm safety. But the number of injured on it in Hokkaido divided by total farming population, was much higher than that ratio of road-traffic accident which safety policies are very important problem.
2) The statistical analysis showed that the farm accident increases for the tractor operation, the animal management, the high performance implement's operation and the traffic operation. And the accident also increases for the elder people and during the farming season goes rainy condition.
3) The ROPS (safety flame) or weather-cabin which have the effect of reducing human-accident are bound to be attached to all farm tractors.
4) Type or kind of farm accident was depend on cultivations of each area. The leader of safety policies has to find out the accident type, and inform the farmers about the safety instructions to fit the local situations.
5) The big rear reflector must be attached to rear part of all farm machines which travel on the road for protect rear-end collision.View full abstractDownload PDF (1091K)
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