Research Article
Sep 1964
Sprinkler Nonuniformity Characteristics and Yield
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VIEW THE REPLYPublication: Journal of the Irrigation and Drainage Division
Volume 90, Issue 3
Abstract
The characteristics of nonuniformity of sprinkler application that affect the yield of useful plant growth are shown to depend on the form of the relationship between yield per unit area and the local depth of water applied. If this yield relationship can be expressed as a polynomial of order r, the significant characteristics of the non-uniform application pattern are shown to be the moments to order r of the distribution of application depths. For example, if the local yield varies as the square of the depth of application; the total yield can be expressed only in terms of the mean depth and the standard deviation, as shown in an example. If a polynomial of a power higher that two is required to express the yield relationship, then additional terms, such as skewness and kurtosis, are needed to describe the effects on total yield.
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Published In
Journal of the Irrigation and Drainage Division
Volume 90 • Issue 3 • September 1964
Pages: 55 - 67
Copyright
© 1964 American Society of Civil Engineers.
History
Published in print: Sep 1964
Published online: Feb 11, 2021
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Authors
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David T. Howell, M.ASCE
Lecturer in Civ. Engrg., Water Research Lab., The Univ. of New South Wales, Manly Vale, N. S. W., Australia
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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