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Volume 27 (1992)
- Issue 3 Pages 185-
- Issue 2 Pages 95-
- Issue 1 Pages 6-
Volume 27, Issue 1
Displaying 1-8 of 8 articles from this issue
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Work Efficiency and Working ExpensesToshio FURUCHI, Masafumi MITARAI, Tetsurou UDATSU1992 Volume 27 Issue 1 Pages 6-13
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSDownload PDF (1029K) -
Masahiro MIYAZAKI, Koichiro OKAZAKI, Yuuji NAGASAKI, Nobuhiro ITOKAWA1992 Volume 27 Issue 1 Pages 14-20
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSIn order to save the labor of the forage harvest work for silage on the small scale upland converted from paddy field, a small-size forage harvester and a driverless transport vehicle were developed.
1. A small-size forage harvester driven 8.4kW engine was self-propelled type and had cutting a width of 0.64m. The cutting and chopping mechanism consisted of the drum mower, rotating auger and the cylinder-type cutterhead. The accuracy of cutting was improved by means of the four trapezoid blades attached drum which was rotated at 35m/s knife velocity. This harvester could harvest corn, barley, and Italian ryegrass for silage with the capacity of 2-3 tons per one hour and below 6% field loss.
2. A driverless transport vehicle driven by 5.9kW engine could follow a small-size forage harvester automatically guided by a drawbar to catch directly chopped forage, and then could separate from harvester to transport and unload it. This vehicle could save efficiently half as unloading time as a trailer, because this vehicle could have heigher volume capacity.View full abstractDownload PDF (1911K) -
(I) Trial Production and Performance Tests of Injection DeviceSeiji NAKAO, Tateshi FUJIURA1992 Volume 27 Issue 1 Pages 21-28
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSA solid manure injection system is a benificial method which reduces undesirable order and pollution problems from runoff. The injection device of solid manure, made as a trial, consists of three basic units that are furrow opener, manure auger conveyer and covering device with soil. This Device is located at the front end of a box type manure spreader, in which the travel direction of web is reversed in order to bring manure to the front.
The optimum condition in injection control system of the injection device is investigated basically on many experimental results by bark manure.
The volume of bark manure pushed to anger conveyer is adjusted by on-off control system with a photoelectric sensor on the electric circuit that moves the floor chain of a manure spreader. Under this condition, the injection volume of manure in farm can be arranged easily by changing the revolution speed of auger shaft.View full abstractDownload PDF (1491K) -
Akihiro GONDOH, Shigeki ISHIDA, Mistugu TOMITA, Toshihiko IBUKI1992 Volume 27 Issue 1 Pages 29-35
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSGeneral speaking, for the low cost production of the crops, the spread large scale of farm management, high efficiency of the farm work and high quality of the crops are important factors.
The simulation model for analyzing the work efficiency of the farm machinery was developed and the work efficiency under various condition was compared and discussed.
The followings were found:
1) For the field scale, if the width of machine is less than 10 meters, when the long side of the field is more than 300-400 meters, the scale of the long side is little effective for the efficiency, and the scale of the short side is not effective for the efficiency.
2) If the long side of the field is more than 200 meters, the existence of the headland work is little effective for the efficiency.
3) The work width of machines is superior in the efficiency to the work speed of machines.
4) When the time of turn in the field is long, the efficiency is down, but if long side in the field is more than 500 meters, the efficiency is small decline.
5) If you wish what the efficiency of works is doubled, the working speed is necessary more than 10 meters per second, therefore you must use no ground locomotion like a tractor but method of high speed works like an aircraft, or you must use new method of wide width machines.
6) It is important that the scale of the field is adapted to the farm management conditions. If the scale of the field is extended than is necessary, the working efficiency is not improved.View full abstractDownload PDF (967K) -
Setyo Pertiwi, Toshio KONAKA, Masayuki KOIKE1992 Volume 27 Issue 1 Pages 36-46
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSThis report describes a study of identifying the best alternative farm work plan generated by Farm Work Plan Optimization Support System by two multicriterion decision-making methods. The two methods are Analytic Hierarchy Process (AHP) and Compromise Programming (CP). An example case is presented from which a brief discussion is derived.
The problem of selecting the best alternative farm work plan is considered to be a multicriterion problem. Six criteria, i. e. working hours of labor, farm work plan stability, initial cost of machinery, operation cost, technological consideration and managerial consideration are identified for the purpose of this study. Once the criteria are selected they are rated among one another using weights which reflect relative priority of the criteria with respect to the goal.
Based on the result of applying the two decision making methods to the example case, it was found that CP gave more acceptable result on identifying the best alternative farm work plan rather than AHP did. However, since no particular method described for assigning weights of the relevant criteria on CP, it is worthwhile to adopt the weighting method described on AHP.View full abstractDownload PDF (1263K) -
(I) Development of Topping Machine and the Stripping Operations of Long-Stem Type Stripping Machine for Sugar CaneYoshiteru MIYABE, Koichi IWASAKI, Sumitaka KASHIWAGI1992 Volume 27 Issue 1 Pages 47-55
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSIn order to mechanize the topping operations of sugar cane, a topping machine using a rotary saw was developed examining the topping performances of the machine. The stripping performances of a long-stem type stripping machine was also tested for improving the working efficiency.
The results were summarized as follows.
1) Increased topping rate of the cane at a proper node was 94.1% under cane conveyor and cutter speeds of 0.25 and 18.0m/s, respectively.
2) Higher topping rate of the cane at an improper node and non-topping rate were obtained, respectively under the cane conveyor speed of 0.25m/s and above, as it was highly affected by the operator's feeding ability.
3) Higher topping efficiency was 1, 638kg/h under the cane conveyor speed of 0.25m/s and cutter speed of 18.0m/s, which was about 3 times as much as that by hand operation. The practical usage of this machine was well recognized.
4) The automation of the feeding process of the canes and the handling method of the bended canes at a large angle must be investigated in the future.
5) In the case of a combination of topping and stripping machines, the stripping performances were obtained as 80.3, 2.5 and 0.1% for detrash rate, trash rate and cane loss, respectively. The working efficiency was 865kg/h, which was about 7 timeshigher as compared with manual operation.View full abstractDownload PDF (1296K) -
Kazunori ISHIKAWA, Akio ISHIKAWA, Hiroaki KATO, Shunichi OMORI1992 Volume 27 Issue 1 Pages 56-64
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSIn order to stabilize tree vigor and fruitset of grape ‘Kyoho’, influence on hastening of budding and fruit set hastening of seeded fruit by notching 1 to 3 buds to intermediate buds was compared to Merit treatment, a customary treatment.
Results as follows:
1. 2 bud notching and 3 bud notching hastened bud growth compared to Merit treatment. Growth was hastened in treated buds and buds nearer to the base.
2. Budding rate of intermediate buds was 81.1% in Merit treated cane, while it exceeded 85% by 2 bud and 3 bud notching.
3. Increase in number of foliage was greater by 2 bud and 3 bud notching than by Merit treatment, The number of foliage on shoots from intermediate buds was evened by 2 bud notching.
4. Berry weight became heavier and seedless berry rate lower by 2 bud and 3 bud notching than by Merit treatment.
5. Merit treatment, 2 bud and 3 bud notching increased ratio of growth of shoots in basal and intermediate regions to growth of all shoots. However, the ratio of apical region was lowerd.
6. We inferred from these results that 2 bud and 3 bud notching were effective in stabiling tree vigor by increasing number of germination of buds in the intermediate region, and in fruit set hastening of seeded fruit.
7. Notching required less working hours than Merit treatment.View full abstractDownload PDF (1181K) -
(II) Simulation on management improvement of a group farming associationTie Zhong ZHANG, Akira SASAO, Noriaki ISHIZAKA, Junichi YONEMURA1992 Volume 27 Issue 1 Pages 65-74
Published: March 20, 1992
Released on J-STAGE: February 09, 2010
JOURNAL FREE ACCESSThis study was carried out in Chonan-Cho, Chiba prefecture. The objective of this study was to simulate an utilization of agricultural machinery by using actual data of T farming association.
In this simulation, a reduction posibility of production cost and a relation between machinery's charges and management of farming association were examined.
The results were as follows:
(1) Although the production cost of wheat and soybean was fairly low considering the scale of machinery installation and the disposal ability of drying equipment in the examined period, the production cost will be further reduced by an expansion of the planted area.
(2) If the managing area is expanded to 55ha rice, 45ha wheat and 45ha soybean, and the machinery charges become case (2) (4.8-7.2% higher than the present price) at the present machinery charges level, the management economy will go into the black.
(3) The management of the farming association is in a deficit account in the present situation of machinery installation, planted area and machinery charges.
(4) If the planted area of the farming association is to be expanded, the equilibrium between revenue and expediture must be considered. If the machinery charges become over case (3) (9.6-14.3% higher than the present price) at the present planted area, management economy will go into the black.View full abstractDownload PDF (1047K)
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