Titlebook: Statistical Design and Analysis for Intercropping Experiments; Volume II: Three or Walter T. Federer Book 1999 Springer Science+Business M

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Varying Densities for Some or All Crops in a Mixture,er 12. The complexity of the statistical analyses over that in Chapter 2 (two crops) of Volume I is increased. The methods of Chapters 3 and 4 of Volume I were extended to mixtures of three or more crops in Chapter 13. Analyses for individual crop responses for each crop as well as analyses for comb

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Intercrop Mixtures When Individual Crop Responses Are Not Available,lable. In this chapter, statistical procedures are given for mixtures of . of . cultivars when there is a single response for the mixture. The methods presented here represent a generalization of those in Chapter 7 of Volume I. The general topic of this chapter has been considered by Federer and Rag

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Spatial and Density Arrangements,mental unit (e.u.) to study the effects of these four factors is the subject of this chapter when the polyculture consists of . cultivars. The type and nature of the e.u. has many more ramifications than if only two cultivars make up the intercrop combination. The concepts and ideas used for mixture

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Spatial and Density Arrangements,umber of cultivars in the mixture. In the next section, density per hectare is held constant while spatial arrangement and intimacy is varied. For . = 3, cultivars in a mixture 18 arrangements, 1 to 18, out of many are discussed. For . = 4, cultivars in a mixture, 6 arrangements, 19 to 24, are presented.

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Some Analytical Variations for Intercropping Studies,lant that proportion of a hectare, say, occupied by a cultivar at the same rate as the sole crop. Graphical displays and numerical examples are included to illustrate various patterns of response and statistical analyses for replacement series experiments.