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Abstract Details
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Activity Number:
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117
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Type:
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Topic Contributed
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Date/Time:
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Monday, August 1, 2011 : 8:30 AM to 10:20 AM
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Sponsor:
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ENAR
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| Abstract - #302181 |
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Title:
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Test of Assumption of Constant Relative Yield Total (RYT) in Replacement Series Experiments
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Author(s):
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Nathan M. Holt*+
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Companies:
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University of Florida
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Address:
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Department of Statistics, IFAS, Gainesville, FL, 32611-0339,
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Keywords:
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Abstract:
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In replacement series experiments with two species, X and Y, the Relative Crowding Coefficient (RCC) serves as an index of interspecies competition. Competition between X and Y is inferred when estimated RCC differs significantly from one. Tests of the null hypothesis that RCC=1 are predicated on the assumption that total yield of species X and Y in mixture is independent of relative planting frequency; that is, for a given number of plants, the total yield is constant whether only X, only Y, or a mixture of X and Y is planted. Estimated Relative Yield Total (RYT) significantly different from unity is evidence of planting frequency dependence. Methods to draw inference about RYT will be presented.
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