Optimum plot size for field trials with Coffea arabica cv. Cauvery (catimor)
Yield data from two lines of Catimor viz. S. 4345 with 120 plants (10 rows of 12 plants each) and S. 4347 with 100 plants (10 rows of 10 plants each) collected from Coffee Research Sub Station, Chettalli for three years 1987-88 to 1989-90 were utilized for this study. Plots of different size and shapes were formed combining the adjacent plants yield in row wise and column wise and the corresponding C.V.'s were worked out separately for individual years and then combination of years for both the lines. Fairfield Smith's equation Y=ax-g and the generalisation of this law in the form Y=ar g1 C-g2 was also tried to compare the heterogeneity of rows (r) and column (c) where g's stand for the heterogeneity coefficients for the plot size x with r rows and c columns. Maximum curvature method, graphical representation and the cost of experimentation were tried to work out the optimum plot size. The plot size and shape givin the required information at a minimum cost was taken as optimum. A plot size of 8 plants in a row across the fertility line was found to be the optimum.
| Main Authors: | , , , |
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| Format: | biblioteca |
| Published: |
Jul
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| Subjects: | COFFEA ARABICA, CATIMOR, EXPERIMENTACION EN CAMPO, TAMAÑO DE LAS PARCELAS, |
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