Analysis of Nested Repeated Measures Model with applications

Abstract

In this paper we study the balanced 4 – way mixed effects model
that has one random effect interacting with one fixed effects and this
interaction interacts with each of other two fixed effects as a nested
repeated measures model .
As studies of water in the present time of the basic necessities, which
must be carried out, the fact that the quality of water has become specific
agricultural production, both quantitatively and qualitatively, in addition,
the use of the kinds of poor water is reflected not only damage to crop
productivity but may lie in the land itself so that result, over the years to a
deterioration in the overall qualities good soil and the emergence of the
problems of salinization and alkalinity and toxin crops planted.
From here we discussed the application of data on agricultural the
experience of the study as well as types or levels of different fertilization
to reduce existing salinity in the waters of subterranean wells for three
sites in the Zubayr region and the impact on the production rate recipes
growth)the level of higher plant) a crop also targeted the experience in the
same time creating overlap between the quality of water used, as well as
chemical fertilization and their impact on production quantity and quality
through the application of the model of repeated measurements.