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Development of crop management techniques for higher yield by optimun control of root zone environment

Research Project

Project/Area Number 01044103
Research Category

Grant-in-Aid for Overseas Scientific Survey.

Allocation TypeSingle-year Grants
Research InstitutionYamaguchi University

Principal Investigator

KUSAKA Tatsuro  Faculty of Agriculture, Yamaguchi University, 農学部, 教授 (50038238)

Co-Investigator(Kenkyū-buntansha) HOSOYAMADA Kenzo  Faculty of Agriculture, Miyazaki University, 農学部, 教授 (10040833)
HAYAKAWA Seiji  Faculty of Agriculture, Yamaguchi University, 農学部, 助教授 (80038299)
MARUMOTO Takuya  Faculty of Agriculture, Yamaguchi University, 農学部, 助教授 (00035122)
SUZUKI Yoshinori  Faculty of Agriculture, Yamaguchi University, 農学部, 教授 (70081495)
Project Period (FY) 1989
Project Status Completed (Fiscal Year 1989)
KeywordsSoil testing / Canada / U.S.A. / Root zone / Microbial biomass / Strawberry / Soil moisture / Soil temperature
Research Abstract

1. Guidance of management technique for upland crops through direct diagnosis of root-zone
In Canada, direct testing of the nutrient situation of each farm are made administratively by having recognized the importance of knowing fertilizer requirements of the crop physically and chemically. For example, the province of Saskatchewan established Soil Testing Laboratory with many professional staffs and modern experimental equipments in the campus of the Saskatchewan University. They lead farmers the most optimun design of fertilizing method to each field through the direct testing. They recommend sampling procedures as follows.
Recommendations for nitrogen and sulphur fertilization are based on the measured levels of nitrate-nitrogen and sulpate-sulpur in the soil samples submitted from each field. Testing samples from the 0-6, 6-12, and 12-24 inch depths results in a more accurate assesment of the N and S status of the soil than testing of the surface, soil only.
The Lovoratory has a netwo … More rk of soil sampling agents. About thermal situation of field, however, they have no services, becauseof land using type farming and vast area of fields.
2. Assesment of thermal enviroment of root-zone and diagnosis of frozen layer and snow depth of fields
In the northern region of the Great Praily in the United States, crop season depend on the period of accumulation of snow and ups and downs of frozen layer. The climatologists of the department of soil science of the University study on these problems and developed a special but a simple measuring scale for frozen layer and snow depth using chemical substances. They measure climatic and micro meteorological conditions, and analyzed them with the heat-balance method to assesment of thermal environment of root-zone in fields.
3. As a first experiment, the optimum physicoenvirommental conditions of a root zone are a for the photosynthesis, growth and quality of fruits in cultivation of strawberry were analyzed by physical control of the soil moisture, soil temperature and other factors at the root zone area during the period of growth, while utilizing the physioecological properties intrinsic to the plant, in an experimental greenhouse strawberry field. The results of experimental cultivation of strawberry over four years from 1986 may be summarized in terms of the relation between the environmental elements at the root zone area and the growth of strawberry as (1) the number of fruits increases by controlling the soil moisture to a dry condition and the weight increases by controlling it to a moist condition, (2) the optimum soil moisture for increasing the total crop weight corresponds to a water content of approximately 30.0% and (3) the sugar content in fruits can be best obtained by maintaining the soil temperature at a high level (until about 28゚C) and by cotrolling the soil moisture at a water content of approximately 35.0%, when cultivated using standard fertilization as a nutrient in the soil. Less

Report

(1 results)
  • 1989 Final Research Report Summary
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 鈴木義則: "畑作物の最適栽培管理技術に関する研究(3)ーイチゴ果実の品質に及ぼす地温の影響ー" 中国・四国の農業気象. 2. 49-50 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 早川誠而: "べたかけ資材の物性が根圏温度環境に与える影響" 中国・四国の農業気象. 2. 12-16 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Tatsuro Kusako: "Physical control of the Root Zone Environments in Cultivation of a Farm Plant" Tran.of the Japanese Soc.of Irrigation,Drainage and Raclamation Engineering. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takuya Marumoto: "Turnover rate of microbial biomass nitrogen in rhizosphere soils of upland crops" Proceedings of International Congress of Soil Science,Kyoto,1990. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshinori Suzuki and et al.: "Development of crop management techniques for higher yield by optimum control of root zone environment (3)" Agricultural Meteorology of Chugoku and Shikoku. 2. 49-50 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Seij Hayakawa and et al.: "Effect of the physical characteristics of covering materials ("Betagake") on root zone soil temperature" Agricultural Meteorology of Chugoku and Shikoku. 2. 12-16 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Tatsuro Kusaka and et al.: "Physical control of the root zone environments in cultivation of a farm plant" Tran. of the Japanese Soc, of Irrigation, Drainage and Reclamation Engineering. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takuya Marumoto: "Turnover rate of microbial biomass nitrogen in rhi20sphexe soils of upland crops" Proceedings of International Congress of Soil Science Kyoto, 1990. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary

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Published: 1993-03-26   Modified: 2016-04-21  

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