Somaiya

www.somaiya.edu

Karnataka Institute of Applied Agricultural Research

Crop : Sugarcane.

Field : Plant Breeding

Collaborator : Self.

Title : VARIETAL SELECTION PROGRAMME (MID-LATE VARIETIES)

Author : R.S.Patil,VasudevRao,T.D.Krishnamurthy and S.I. Harlapur.

Year : 1988-89

Selection of varieties for their good quality and high yield was continued. A set of 18 varieties were tested, along with two local popular varieties Co 740 and Co 419. The Sugarcane Varieties, design, fertilization etc. are summerised below.

Location	: Sy.No. 121/A5
Sugarcane Varieties	: Co 6304, Co 7604, Co 7804, Co 7508, Co 7808, Co 7912, Co 7914, Co 8011, Co 8014, Co 8022, Co 8024, Co 8115, Co 8127, Co 8147, Co 8213, Co 8220, Co 8221, CoSi 86071.
Local Standards	: Co 419 and Co 740
Experimental Design	: Randomised Block with 3 Replications.
Soil	: Deep clay
Fertilization (Kg ha-1)	: N	P	K
	250	75	187.5
Bsal	: 25	75	187.5
45 days	: 112.5
90 days	: 112.5
Irrigations	: 25
Planting	: January 1988
Harvesting	: March 1999
The experimental data in respect of juice quality at increasing crop ages of 9, 11 and 13 months and yield components and yield are presented in Table 1 and 2.

TABLE - 1. SUGARCANE VARIETAL TRIAL MID-LATE VARIETIES JUICE QUALITY AT INCREASING CROP AGE.

Varieties	9 Months			11 Months			13 Months
	Brix	Pol	Purity	Brix	Pol	Purity	Brix	Pol	Purity
Co 419	13.71	9.52	69.44	17.71	14.66	82.78	21.2	19.04	89.81
Co 6304	14.06	10.91	77.60	18.76	16.60	88.49	19.45	17.49	89.92
Co 740	14.42	11.02	76.42	18.25	16.09	88.16	19.95	17.90	89.72
Co 7604	13.72	9.79	72.08	18.86	16.46	87.27	20.65	18.67	90.41
Co 7804	13.35	9.71	72.73	17.31	14.74	85.15	19.80	17.66	89.19
Co 7805	14.95	11.57	77.39	19.92	17.49	87.80	22.60	20.75	91.81
Co 7808	14.15	10.56	74.63	18.24	15.79	86.54	21.60	19.56	90.60
Co 7912	14.10	10.20	72.34	19.50	16.95	86.92	20.20	18.32	90.69
Co 7914	14.59	11.57	79.30	20.32	17.78	87.50	22.15	19.80	89.41
Co 8011	13.69	10.16	74.21	18.62	16.53	88.78	22.00	19.92	90.54
Co 8014	15.45	11.97	77.48	19.85	17.57	88.51	20.60	18.13	88.00
Co 8022	14.72	11.48	77.99	18.57	16.45	88.58	20.75	18.71	90.19
Co 8024	14.16	10.48	74.01	17.09	14.24	83.32	19.55	17.72	90.63
Co 8115	15.01	11.60	77.28	19.59	17.56	89.64	21.35	19.19	89.90
Co 8127	13.83	10.50	75.92	19.73	17.45	88.44	21.05	19.54	92.82
Co 8147	16.25	13.08	80.49	19.49	17.38	89.17	20.25	17.76	87.72
Co 8213	14.91	11.88	79.68	20.27	17.94	88.51	21.55	19.26	89.39
Co 8220	15.38	12.35	80.30	20.10	17.87	88.91	22.05	20.27	91.95
Co 8221	14.40	11.80	81.72	19.94	17.14	85.96	20.85	18.20	87.31
CoSi 86071	14.57	11.26	77.28	19.25	17.11	88.88	19.55	17.70	90.56

TABLE - 2. SUGARCANE VARIETAL TRIAL MID-LATE YIELD PARAMETERS.

Variety	Inital Plant Popl. at	Shoot Plant Popl.	Final stalk	Cane		Sugar
	45 days per m2	at 120 days per m2	No./ha	yield/ha	CCS %	Yield
			(ooo's)	(M.T)		T/ha
Co 419	5.8	17.0	115.5	60.9	13.48	8.21
Co 740	6.7	20	98.6	77.0	12.39	9.54
Co 6304	7.3	17.0	94.6	81.8	12.67	10.36
Co 7604	5.6	16.0	75.2	75.9	13.26	10.06
Co 7804	7.1	23.0	94.2	92.0	12.46	11.46
Co 7805	7.3	15.0	81.8	87.0	14.85	12.92
Co 7808	6.5	19.0	67.7	66.0	13.91	9.18
Co 7912	7.1	17.0	77.7	51.0	13.03	6.64
Co 7914	4.9	11.0	50.2	67.5	13.99	9.44
Co 8011	8.3	19.0	104.1	108.5	14.16	15.38
Co 8014	6.2	14.0	80.3	95.7	12.71	12.16
Co 8022	7.2	17.0	83.2	96.8	13.27	12.84
Co 8024	4.7	15.0	88.7	79.9	12.60	10.07
Co 8115	7.4	14.0	78.1	72.2	13.60	9.82
Co 8127	6.5	17.0	96.4	78.8	14.05	11.07
Co 8147	6.5	19.0	89.5	54.3	12.43	6.75
Co 8213	6.9	20.0	94.1	79.2	13.61	10.78
Co 8220	4.2	14.0	101.9	83.0	14.51	12.04
Co 8221	6.8	16.0	110.0	81.8	12.71	10.40
CoSi 86071	6.3	17.0	87.6	70.8	12.58	8.91

Data on juice quality at 9 months crop age indicated that varieties Co 8147, Co 8220, Co 8014, Co 8213, Co 8221, Co 7805, Co 8022, Co 8115, Co 7914 and Co 8011 gave higher pol percent juice than local standard Co 740.

At 11 months of crop age all the varieties tested, except Co 7804 and Co 7808 gave higher pol percent than standard Co 740.

At harvest (13 months of crop age) variety Co 7805 gave the highest pol percent of 20.75 followed by Co 8220, Co 8011, Co 7914, Co 7808, Co 8127, Co 8123, Co 8115 and local standard Co 419. All the varieties tested, except Co 6304, Co 7804, Co 8014 and CoSi 86071 gave higher pol percent than local standard Co 740. Variety Co 8011 recorded higher caneyield of 108.5 tonnes per hectare followed by Co 8022, Co 8014, Co 7804, Co 7805, Co 8220, Co 8221, Co 6304, Co 8024, Co 8213 and Co 8127l. Other varieties tested gave lower yield compared to Co 740. Variety Co 8011 gave the highest sugar yield of 15.36 tonnes per hectare at 13 months followed by Co 7805, Co 8022, Co 8014 and Co 8220. All other varieties tested gave sugar yield below 12 tonnes per hectare.

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