Somaiya

www.somaiya.edu

Karnataka Institute of Applied Agricultural Research

Crop : Sugarcane.

Field : Plant Breeding

Collaborator : Self.

Title : Midlate Varietal Trial - 1990.

Author : T.D.Krishnamurthy, Harlapur and V.B.Kembhvi.

Year :1990-91

Twelve sugarcane varieties were evaluated for their yield and quality. The experiment was laidout in an RBD design with three replications. In analysis of experimental data (Table 2A & B) it was found that variety Co 8011 gave the highest yield and was on par with Co 7914, Co 85021 and Co 85019 another standard Co 8014 gave significantly lower yield compared to Co 8011. The lowest yield was recorded by Co 7805.

Table 2A. Mid-late Varietal Trials 1990-91.

1. Analysis of Variance of Data on Yield t.c. ha-1

Source of Variation	Degrees of Freedom	Sum of Squares	Mean Square
Replications	2	288.5542	144.2771
Varieties	11	10940.4930	994.5903**
Error	22	905.1728	41.1442
Total	35	12134.2200	-

Table 2Aa. Mean Yield of Varieties in Descending Order.

Sl.No.	Variety	Mean Yield t.ha-1
1	Co 8011	156.3
2	Co 7914	155.0
3	Co 85021	150.5
4	Co 85019	144.4
5	Co 8021	128.9
6	Co 85061	126.1
7	Co 7910	122.8
8	Co 85246	120.8
9	Co 8014	120.4
10	Co 7219	119.1
11	Co 740	118.9
12	Co 7805	95.2
	SE = 3.7033,	CD 0.05 = 10.90.

Table 2B. Mid-late Varietal Trials (contd).

Analysis of Variance of Data on Pol % Juice.

Source of Variation	Degrees of Freedom	Sum of Squares	Mean Square
Varieties	11	29.2303	2.6573+
Age	2	401.8862	200.9431**
Var. X Age	22	38.3398	1.7427*
Error X	72	60.5970	0.8416
Total	107	530.0533	-
* P = 0.05	** P = 0.01	+ = Probably significant at 5% level.
X includes replication 55 and all interaction terms with replication.

Table 2Bb. Table of Effects.

Sl.No	Variety	Mean	Slope	Curvature
1	Co 8014	19.066	1.590	0.883
2	Co 7805	18.809	1.483	-0.197
3	Co 85246	18.766	2.708	-0.422
4	Co 85061	18.470	2.445	-1.225
5	Co 85019	18.268	2.850	-0.858
6	Co 740	18.256	1.638	0.878
7	Co 8021	18.222	2.772	-0.342
8	Co 7219	18.038	2.548	0.242
9	Co 7910	17.809	1.735	-1.102
10	Co 85021	17.731	3.602	-0.778
11	Co 8011	17.621	2.703	-0.953
12	Co 7914	17.233	2.168	-0.405
Std. Error		0.306	0.375	0.649

Variety Co 8014 recorded significantly higher mean pol % juice followed by Co 7805, Co 85246 and Co 85061. However only Co 8014 had a positive trend, as it increased its pol % juice till harvest at 13 months crop age in March.

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