摘要:

This is an aggregate study based on the time series data, 1921 to 1964, covering the entire Province of Manitoba on a district‐by‐district basis. The study has attempted to include three parts. First it has examined grain yield fluctuations and has selected the most significant factors influencing yields. These include resource inputs, technology, weather and chance. Second, the study has developed a method by which the influence of each factor on grain yields may be measured. Third, it has shown that grain yields can be forecast within an acceptable margin of error, based on the past pattern of weather cycles, the current trend of technical advance and a monthly assessment of rainfall and temperature during seeding, growing and harvesting periods in any given year.The findings from this study show that the predicted yields for each of the grain crops were reasonably close to the actual yields, demonstrating an adequate model used and the efficiency of the analytical technique employed. Additional work on this topic is necessary, firstly to explore other possible methods of analysis and, secondly, to extend the analysis to cover the other two prairie provinces on a district‐by‐district basis, in order to be able to provide more information regarding the crop predictions which may be useful to farmers, distributors, businessmen, and governments involved in decision

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02363.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02364.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02365.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

Adjustments of farm organization can or should be made to improve farm income within the Medstead and related areas. Empirical findings, supported by value judgments emanating from knowledge of the areas and agriculture in general, form the basis of the policy recommendations. Such recommendations, however, should be periodically re‐assessed in terms of the changing supply and demand relationships for agricultural product

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02366.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02367.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02368.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02369.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02370.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

ISSN:0008-3976    

DOI:10.1111/j.1744-7976.1965.tb02362.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY