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Monograph on alpha designs

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Title Monograph on alpha designs
Not Available
 
Creator Rajender Parsad
V.K. Gupta
P.K. Batra
S.K. Satpati
Pabitra Biswas
 
Subject Resolvable block designs
Alpha designs
A-efficiency
D-efficiency
PBIB designs
Alpha array
 
Description Not Available
alpha-designs are essentially resolvable block designs. In a resolvable block design, the blocks can be
grouped such that in each group, every treatment appears exactly once. Resolvable block designs allow
performing an experiment one replication at a time. For example, field trials with large number of crop
varieties cannot always be laid out in a single location or a single season. Therefore, it is desired that
variation due to location or time periods may also be controlled along with controlling within location or
time period variation. This can be handled by using resolvable block designs. Here, locations or time
periods may be taken as replications and the variation within a location or a time period can be taken care
of by blocking. In an agricultural experiment, for example, the land may be divided into a number of large
areas corresponding to the replications and then each area is subdivided into blocks. These designs are
also quite useful for varietal trials conducted in the NARS and will help in improving the precision of
treatment comparisons. A critical look at the experimentation in the NARS reveals that alpha designs
have not found much favour from the experimenters. It may possibly be due to the fact that the
experimenters may find it difficult to lay their hands on these alpha-designs. The construction of these
designs is not easy. An experimenter has to get associated with a statistician to get a randomized layout
of this design. For the benefit of the experimenters, a comprehensive catalogue of alpha-designs for
6
Not Available
 
Date 2017-06-29T09:43:18Z
2017-06-29T09:43:18Z
2007-02-17
 
Type Monograph
 
Identifier Parsad,Rajender, Gupta, V.K., Batra, P.K., Satpati, S.K. and Biswas, Pabitra (2007). alpha designs. IASRI, New Delhi.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/4506
 
Language English
 
Relation I.A.S.R.I./M.-01/2007
 
Publisher ICAR-IASRI, Library Avenue, Pusa, New Delhi