Somaiya

www.somaiya.edu

Karnataka Institute of Applied Agricultural Research

Crop : Sugarcane.

Field : Plant Breeding

Collaborator : Self.

Title : Mid-late Varietal Trial - 1991-92.

Author : T.D. Krishna Murthy and S.I.Harlapur.

Year : 1991-92

Here also we have tested 11 different varieties with Co 740 as standared. Variety Co 8021 has recorded highest yield of 132.9 T/ha while Co 8011 and Co 8014 were almost equal 124.5 and 124.7 (Tonnes/ha). But maximum No. of millable canes has been obtained by Co 7910 (115400) while Co 8021 has recorded NMC of 105200 and Co 8011 (98900) and Co 8014 (89800) respectively. As far as juice quality is concerned Co 8021 has pol percent juice (19.45). The highest being recorded by Co 85246 (22.45%). Co 8011 and Co 8014 were almost equal (20.38% and 20.88%). This project also has two years of data. We are making a pooled analysis of these two years data and are eliminating those varieties whose performance is consistently poor (Vide Table No. 2).

Table No. 2. Mid-late Varieties Trial 1991.

Yield and Quality Attributes of Different Varieties.

Varieties	NMC/ha	Yield	Pol %	Pol *	Mean
	('ooo)	T/ha	Juice	T/ha	R.S %
Co 740	100.0	99.1	20.13	14.36	0.350
Co 7219	97.6	100.9	20.71	15.04	0.261
Co 7805	79.2	103.9	20.58	15.39	0.197
Co 7910	115.4	107.9	18.53	14.39	0.527
Co 7914	78.1	97.2	19.46	13.61	0.315
Co 8011	98.9	124.5	20.38	18.26	0.405
Co 8014	89.8	124.7	20.88	18.74	0.264
Co 8021	105.2	132.9	19.45	18.61	0.459
Co 85019	85.6	103.9	19.76	14.78	0.684
Co 85021	95.5	99.5	20.51	14.69	0.635
Co 85061	95.6	106.5	21.03	16.12	0.340
Co 85246	73.7	95.0	22.45	15.35	0.263
	* Calculated by taking J-R = 0.72.

Varieties Co 7805 was poor yielder during 1990-91 (95.2 T/ha) and during 1991-92 Co 85246 was a poor yielder (95.0 T/ha). During 1990-91 lowest pol was 19.18% recorded by Co 7910 and during 1991-92 lowest pol was 18.53% recorded by Co 7910.

Crop		: Sugarcane,Soybean.

Field		: Agronomy

Collaborator		: Self.

Title		: Soybean intercrop in Sugarcane 1991-92.

Author		: T.D. Krishna Murthy and S.I.Harlapur .

Year		: 1991-92


The first year of the trial is completed. It has been observed that increased level
of fertilizer application (from 75% to 100%) has improved cane yield 234.67 Kg/plot to
258.83 Kg/plot. At 125% of normal dose of fertilizer a further improvement in yield was
noticed (280.30 Kg/plot). Yield of sugarcane, intercropped with soybean was higher than
a pure stand crop. (292.06 Kg/plot and 258.0 Kg/plot respectively).

The effect on NMC by intercropping was however negative i.e. NMC in intercropped
plots was lesser than pure stand crop 271 in pure stand of sugarcane and 266.170 in
intercrop plots in normal dose of fertilizer (Vide Table No. 3).

Table No. 3. Sugarcane Yield Kg per Plot Variety CoC 671.

	CROPPING SYSTEMS (CS)
	CS1			CS2
	Sugarcane Pure Stand			Sugarcane-Soybean Intercropping
	FERTILIZER LEVELS (fL)			FERTILIZER LEVELS (fL)
	f L1	f L2	f L3	f L1	f L2	f L3
BLOCKS	3/4 Normal	1 Normal	11/4 Normal	3/4 Normal	1 Normal	11/4 Normal

1	232	243	278	240	299	348
2	235	268	294	277	284	294
3	238	244	273	282	289	317
4	255	286	297	279	319	340
5	234	263	275	243	285	301
6	214	249	266	238	295	327

MEAN	234.67	258.83	280.50	259.83	295.17	321.17

Table A 2.2: Number of Millable Canes (NMC) per plot VAR. CoC 671.

	CROPPING SYSTEMS (CS)
	CS1			CS2
	Sugarcane Pure Stand			Sugarcane-Soybean Intercropping
	FERTILIZER LEVELS (fL)			FERTILIZER LEVELS (fL)
	f L1	f L2	f L3	f L1	f L2	f L3
BLOCKS	3/4 Normal	1 Normal	11/4 Normal	3/4 Normal	1 Normal	11/4 Normal

1	296	276	265	254	268	290
2	304	265	271	258	270	267
3	281	255	267	260	261	270
4	298	280	311	260	304	285
5	281	270	320	260	254	264
6	271	280	294	239	240	260

MEAN	288.50	271.00	288.00	255.17	266.17	272.67

Table A 2.3: Seed Yield in Soybean (Intercrop), Kg per plot Variety. Monetta:

Fertilizer	B L O C K S						Mean
Levels	1	2	3	4	5	6

3/4 Normal	0.766	0.838	0.911	1.247	0.838	0.634	0.8723

1 Normal	0.911	1.393	1.127	0.924	1.038	0.911	1.0493

11/4 "	0.845	1.241	0.851	0.851	1.102	0.983	0.9788

Crop		: Sugarcane.

Field		: Agronomy

Collaborator		: Self.

Title		: Effect of Zn So4 on Sugarcane Yield and Quality 1991-92.

Author		: T.D. Krishna Murthy and S.I.Harlapur .

Year		: 1991-92

Zn So4 at 4 different levels have been tried i.el at 12.5, 25.0, 37.5 and 50.0 Kg/ha with
one check was tested on three different varieties Co 8011, Co 8014 and CoC 671. The
general trend noticed here was that with increased dosage of Zn So4 from '0' to 25 Kg/ha.
there was increase in yield (from 161 Kg to 193.6 Kg/plot). But at 37.5 Kg/ha in variety
Co 8011 has not showed any improved yield. However at 50 Kg/ha. dose again there was an
increase in yield. (222.6 Kg/plot). A similar is the case with CoC 671. (from 140.3 Kg/plot
to 179 Kg/plot) with the dosage from ' O ' to 25 Kg/ha). In respect of No. of millable canes
there is rise in No. of canes with the rise in Zinc Sulphate levels in case of variety Co 8011.
But Co 8014k and CoC 671 have behaved abnormally (Vide Table No. 4A and 4B).

Table No. 4A. Sugarcane Yield Kg/plot. (Plot size : 8 rows of 6 m length)

Varieties	Replication	Zn So4 (levels Kg/ha)
		0	12.5	25	37.5	50	Mean
	RI	160	172	184	180	232	185.6
Co 8011	RII	166	186	184	193	190	183.8
	RIII	157	185	213	208	246	201.8
	Mean	161	181	193.6	193.6	222.6	190.4
	RI	150	146	201	202	227	185.2
Co 8014	RII	134	129	151	168	233	163.0
	RIII	130	157	219	218	235	191.8
	Mean	138	144	190.3	196	231.6	180.0
	RI	146	165	177	170	187	169.0
CoC 671	RII	148	166	172	174	215	175.0
	RIII	127	180	188	208	196	179.8
	Mean	140.3	170.3	179	184	199.3	174.6

Table No. 4B. No. of Millable Canes/Plot. (Plot size : 8 rows of 6 m size)

Varieties	Replication	Zn So4 (levels Kg/ha)
		0	12.5	25	37.5	50	Mean
	RI	169	160	161	173	165	165.6
Co 8011	RII	131	168	175	158	185	163.4
	RIII	190	182	186	198	191	189.4
	Mean	163.3	170	174	176.3	180.3	171.8
	RI	170	161	223	203	179	187.2
Co 8014	RII	180	167	163	188	174	174.4
	RIII	204	214	191	187	200	199.2
	Mean	184.6	180.6	192.3	196.8	184.3	186.9
	RI	163	156	162	144	156	156.2
CoC 671	RII	159	155	135	158	143	150.0
	RIII	151	162	168	180	161	164.4
	Mean	157.6	157.6	155.0	160.6	153.3	156.8

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