STATISTICAL EVALUATION OF AGROFORESTRY SYSTEM WITH FINGERMILLET
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Date
2015-07-10
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Correlation analysis, Path analysis, ANOVA and ANCOVA were employed in
this study. Fingermillet grain yield was noticed to be higher when grown with Madhuca
latifolia, same tree species has recorded higher finger millet yield grown in its southern
direction and at a 5 m distance compared to 2.5 m against other tree species. If a farmer
wants grain and straw yield in the initial days he can think of intercropping with
Madhuca latifolia, if he needs wood in the initial period Melia dubia may be preferred as
it provides less yield for finger millet. Correlation analysis between wood volume and
tree characters revealed that there was significant correlation between wood volume and
GBH followed by bole height. Path analysis revealed that higher directs effects of GBH
and bole height on wood volume. These two characters can be considered for selection of
tree species for intercropping with fingermillet. Lower residual effect indicated better
association with the tree characters on wood volume when grown with fingermillet as
intercrop. ANCOVA carried out using tree characters as covariates (GBH and bole
height) had less error mean sum of squares than ANOVA. Relative efficiency of
ANCOVA over ANOVA was >1. This indicated that, adjustment to covariates ANCOVA
will minimize the error component of analysis and is more precise than ANOVA in
identifying actual fingermillet yield differences when grown as intercrop
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