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An efficient class of tree network balanced designs for agroforestry experimentation

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Title An efficient class of tree network balanced designs for agroforestry experimentation
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Creator Peter T. Birteeb
Cini Varghese
Seema Jaggi
Eldho Varghese
Mohd Harun
 
Subject Adjacency matrix
Agroforestry
Canonical efficiency factor
Fisher’s information matrix
Network balanced designs
SAS macro
 
Description Not Available
The use of an appropriate design is a very important aspect of agroforestry experimentation. Since different species of trees may interact spatially, plots in agroforestry could be connected through network of trees which would create non-directional adjacency effects on a plot. Hence, there is a need to take the “direct effect of trees” and “tree network effects” on the crop into account when designing an agroforestry experiment. Tree network effect refers to the influence a tree exerts on the surrounding plots as a result of adjacency of the plots. In this paper, a class of network designs incorporating effects of trees from adjacent plots has been obtained. The characterization properties of the designs have also been studied. The designs are found to be variance balanced for the estimation of direct as well as network effects of trees. They are also highly efficient designs, and hence, are recommended for agroforestry experimentation with multiple tree species and a single crop.
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Date 2022-04-05T06:27:40Z
2022-04-05T06:27:40Z
2020-10-16
 
Type Research Paper
 
Identifier Peter T. Birteeb, Cini Varghese, Seema Jaggi, Eldho Varghese & Mohd Harun (2020) An efficient class of tree network balanced designs for agroforestry experimentation, Communications in Statistics - Simulation and Computation, DOI: 10.1080/03610918.2020.1825739
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http://krishi.icar.gov.in/jspui/handle/123456789/71186
 
Language English
 
Relation Not Available;
 
Publisher Communications in Statistics - Simulation and Computation