ratooning capability of recently releasedphilsurin hyvs · ratooning of cane is very essential for...

1

Ratooning Capability of Recently ReleasedPHILSURIN HYVs1

Jojit A. Demaraye, Haydee P. Villariez, Chona R. Untal, Julius F. Chua, Bernie G. Dequinto

and Rosalyn T. Luzaran2

ABSTRACT

To fully utilize the maximum potential of its released sugarcane varieties, PHILSURIN

conducts special studies to determine inherent traits of each HYV including tolerance to stressful

conditions and their ratooning capability.

Thus, a ratooning trial was conducted that tested 24 entries including the promising

clones, newly released, commercial, and some foreign varieties. The study had also quantified

the ratoon performance of the two HYVs, PSR 03-171 and PSR 07-195, released last 2018.

Common among the varieties were the continuing reduction of cane and sugar yield from

the plant crop until the 2ndratoon. The decline was due to the shortening of stalk length and the

lowering of stalk population. Among the recently released varieties, PSR 03-171, PSR 07-195,

PSR 02-247, and PSR 02-272 showed high sugar yields until the 2nd ratoon. These yielded 197,

206, 197, and 193 LKg/Ha respectively from the 2nd ratoon. PSR 04-172 was moderately high in

yield from this cropping with 163 LKg/Ha. In comparison, PHIL 80-13 and VMC 84-947 as

positive checks yielded 194 and 179 LKg/Ha respectively.

The two newly released varieties showed advantage in sugar yield over the Check

varieties. PSR 03-171 was higher by 3%, 13%, and 2% over PHIL 80-13; and by 8%, 4%, and

10% over VMC 84-947 from the plant crop, 1st and 2ndratoons respectively. On the other hand,

PSR 07-195 was higher by 11% and 6% over PHIL 80-13; and 17% and 15% over VMC 84-947

in the plant and 2nd ratoon crop respectively. Both varieties were significantly higher over

VMC 86-550 in the 2nd ratoon; and both were higher over VMC 84-524 from the plant crop until

the 2nd ratoon.

_______________ 1Paper presented to the 66th PHISUTECH Convention on August 2019 at Waterfront Hotel, Cebu City. 2Agronomist, Senior Agronomist, Agronomists, Regional Coordinator and Station Manager/Pathologist respectively of the Philippine Sugar Research Institute Foundation, Inc.

2

I. INTRODUCTION

Coupled with PHILSURIN’s aim of developing better varieties is its goal of determining

the maximum potential of each released HYV.Thus, special studies are conducted to determine

the tolerance of promising and released varieties to environmental stress and to gauge their

ratooning capabilities.

Ratooning of cane is very essential for increasedfarmer benefits dueto lesser cost of

production per tonne of ratoon crop compared to the plant cane. Ratooning saves expenses in

land preparation, planting material, seedpiece treatment and planting. However, most ratoon crop

yields are lower than the plant crop (Verma, 2002).

Some of the reasons cited for low cane yield of ratoon crops are low soil fertility, sub-

optimal plant population density, poor management and improper planting methods and low

ratooning potential of varieties used. Moreover, ratooned sugarcane has higher demand for

nitrogenous fertilizer due to shallow root system, sprouting of stubble buds, decay of old roots,

and immobilization of nitrogen. Thus, proper management of ratoon crop is necesssary and 20 to

25% more nitrogenous fertilizer is required over the recommended dose of nitrogen for better

ratoon crops (Lal and Singh, 2008).

A previous Ratooning study conducted byPHILSURIN had identified three of its

varieties-PSR 97-45, PSR 04-172 and VMC 87-599to be stable in tonnage, sugar yield and high

profitability from the plant crop until the 2ndratoon. Remarkably, three PHILSURIN varieties-

VMC 84-947, PSR 02-247 and PSR 00-34 showed profitability until the3rdratoon because of

their positive % ROI compared to the plant crop.

Recently, another Ratooning trial was conducted to quantify the ratooning capability of

PHILSURIN HYVs released last 2018- the PSR 03-171 and PSR 07-195. This is to determine

their inherent ratooning potential and to compare their ratooningperformance until the2ndratoon

with the existing commercial varieties, with the other recently released varieties and with the

promising PHILSURIN HYVs.

3

II. MATERIALS AND METHODS

The trial was planted lastDecember 10, 2015 in Brgy. Tanza, E.B Magalona. It was laid

down in a Randomized Complete Block Design (RCBD) with four replicates in 6 rows x 5-meter

plot that were spaced at 1.3 meter between furrow spacing.The field has sandy loam soil type and

the area belongs to Type A weather pattern.

PSR 03-171 andPSR 07-195, the two PHILSURINHYVs released last 2018, were

compared with four check varieties: Phil 80-13 and VMC 84-947 as the good ratooners and

VMC 86-550 and VMC 84-524 as the poor and moderate ratooners respectively.Other recently

released and promising varieties, one popular commercial variety, and three foreign varieties

were also included in this trial. Over-all, there were 24 entries that were tested:

VMC 84-524 PSR 02-272 PSR 07-195 PHIL 99-1793

VMC 84-947 PSR 03-171 PSR 08-51 PHIL 80-13

VMC 67-252 PSR 04-172 PSR 08-57 VMC 86-550

PSR 01-105 PSR 06-122 PSR 08-61 CYT 74-141

PSR 01-136 PSR 07-45 PSR 08-82CYZ 93-159

PSR 02-247 PSR 07-66 PSR 08-133 M 1246/84

The trial was manually planted at a rate of 4.5 lacsa/ha. Fertilization was based on

recommendation from soil analysis. The conventional cultural management with carabao

cultivation to off bar and hill up was followed to maintain the crop. Pre-emergence chemical

spraying and manual weeding forthree times were employed to control weeds.

All growth and yield data were taken from inner four center rows of each plot. The trial

was harvested at 11months for the plantcrop and 10 to 10.5 months in the ratoons. Yield

parameters including stalk population, size, length, and average weight per stalk were taken at

harvest. Plot weight was also taken for computation of TC/Ha. LKg/TC was determined from

juice analysis of ten stalk samples per plot and sugar yield or LKg/Ha was computed from

TC/Ha x LKg/TC. All data were subjected to statistical analysis using ANOVA and treatments

means were compared using LSD at 0.5 level of probability.

4

Fig. 1. Stalk size of 24 varieties from the plant crop until the 2ndratoon.

III. RESULTS AND DISCUSSION

A. Early growth observations

All entries showed an average to fairly good stand from 1.5 to 8.5 months of the plant

crop. PSR 02-247, PSR 08-57 and CYT 74-141 were rated as fast growing canes while

M1246/84 and PSR 07-66 were rated as very fast growing. VMC 84-947, PSR 02-272, CYZ 93-

159, and CYT 74-141 showed the highest tillering performance.

B. Stalk and yield parameters at harvest from plant crop until 2nd ratoon

1. Stalk size, length, average weight and stalk population

Fifteen out of 24 varieties had either increased or had maintained their stalk size from the

plant crop until the 2ndratoon. These included the PHIL 80-13, VMC 86-550, VMC 84-947,

VMC 67-252, PSR 01-136, PSR 02-272, PSR 03-171, PSR 04-172, PSR 07-45, PSR 07-195,

PSR 08-57, PHIL 99-1793, CYT 74-141, CYZ 93-159 and M1246/84 (Figure 1 and Appendix

Table 1).

5

Fig. 2. Stalk length of 24 varieties from the plant crop until the 2ndratoon.

Fig. 3. Average stalk weight of 24 varieties from the plant crop until the 2ndratoon.

Instalk length, generally all varieties had shown a significant decline from the plant crop

to the 1st ratoon except VMC 84-947, PSR 01-105, PSR 03-171 and PSR 06-122 which showed

minimal reduction. In the 2nd ratoon, there was a general steep reduction from either the plant

crop or from the 1st ratoon. However, VMC 84-524, PSR 07-66, PSR 08-51, CYZ 93-159 and

M1246-84 had shown increasedlength in the 2ndratoon over the 1st ratoon (Figure 2 and

Appendix Table 2).

Twelve varieties had either increased or had maintained their average stalk weight from the

plant crop until the 1stratoon. These varieties had either maintained their stalk size or had not

significantly reduced in length from the plant crop to the 1stratoon. These included PHIL 80-13,

VMC 86-550, VMC 84-947, PSR 01-105, PSR 02-247, PSR 03-171, PSR 06-122, PSR 08-57, PSR

08-133, CYT 74-141, CYZ 93-159 and M1246/84. Generally, there was a drastic reduction in

average stalk weight from the 1stratoon to the 2nd ratoonexcept for VMC 84-524, VMC 84-947, PSR

01-136, PSR 03-171, PSR 04-172, PSR 07-66, PSR 07-195, PSR 08-51, PSR 08-57,PHIL 99-1793,

and CYZ 93-159 which showed minimal reduction (Figure 3 and Appendix Table 3).

6

0.00

2.00

4.00

6.00

8.00

10.00

12.00

Average Stalks/m2 from Plant crop to 2nd RatoonP R1 R2

In terms of stalk population, VMC 84-947, PSR 08-61, CYT 74-141, CYZ 93-159 and

M1246/84 showed increase or maintained population from the plant crop to the 1stratoon. In the

2ndratoon, two varieties- PHIL 80-13 and PSR 06-122 showed higher stalk count over their

1stratoon. The rest of the varieties had shown a continuing and significant reduction in number

of stalks from the plant crop until the 2ndratoon(Figure 4 and Appendix Table 4).

.

Fig. 4. Average stalk count/m2 of 24 varieties from the plant crop until the 2ndratoon.

2. TC/Ha, LKg/TC and LKg/Ha

Most entries showed a significant and continuing reduction in tonnage from the plant

crop until the 2ndratoon. However, some had shown minimal reduction from the plant crop to the

1stratoon such as PSR 02-247, PSR 02-272, CYZ 93-159, and M 1246/84. Varieties with

consistently higher tonnage over the others from the plant crop until the 2ndratoon were VMC

84-947, PSR 03-171, PSR 06-122, PSR 07-195,CYT 74-141 and CYZ 93-159 (Figure 5 and

Appendix Table 5).

Fig. 5. TC/Ha of 24 varieties from the plant crop until the 2ndratoon.

7

Fig. 7. LKg/Ha of 24 varieties from the plant crop until the 2ndratoon.

2.312.61

1.942.14 2.07

2.23 2.24 2.24 2.382.09

2.532.28

2.71

1.82

2.25 2.122.38

1.95

2.41 2.342.00

1.64

2.21 2.26

1.20

1.70

2.20

2.70

3.20

LKg/TC

P R1 R2

In LKg/TC, most entries was noted to have generally improved insweetness either in the

1stratoon or in the 2ndratooncompared to plant crop. Varieties which consistently showed

moderately high to high LKg/TC were PHIL 80-13, VMC 86-550, PSR 01-136, PSR 02-247,

PSR 02-272, PSR 04-172, PSR 07-45,PSR 07-195 and PSR 08-133. Those with very low

sweetness were PSR 07-66 and CYT 74-141 (Figure 6 and Appendix Table 6).

Fig. 6. LKg/TC of 24 varieties from the plant crop until the 2ndratoon.

The significant and continuing reduction in tonnage from the plant crop until the

2ndratoon was reflected in LKg/Ha. However, the two foreign varieties, CYZ 93-159 and

M1246/84 had shown increased sugar yield from the plant crop to the1stratoon. Among those

with higher LKG/Ha from the plant crop until the 2ndratoon over the rest of the entries were

PHIL 80-13,VMC 84-947, PSR 02-247, PSR 03-171, PSR 06-122, PSR 07-195 and

CYZ 93-159 (Figure 7 and Appendix Table 7).

8

Other recently released varieties showed moderately high to high sugar yield from the

plant crop until the 2nd ratoon like PSR 02-272, and PSR 04-172. On the other hand, varieties

with good performance until the 1st ratoon only included VMC 86-550, VMC 67-252, PSR 01-

105, PSR 01-136, PSR 07-45, PSR 07-66, PSR 08-51, PSR 08-57, PSR 08-61, PSR 08-82, PSR

08-133, CYT 74-141, and M 1246/84.

C. Ratooning Capability of the Two Recently Released Varieties versus Checks

Comparison was made for the ratoon performance of the two newly released varieties,

PSR 03-171 and PSR 07-195 with the positive checks, PHIL 80-13, and VMC 84-947 and the

negative checks, VMC 86-550 and VMC 84-524. As mentioned earlier, stalk sizes had generally

increased or maintained from the plant crop until the second ratoon except for the significant

drop of VMC 84-524 in the second ratoon. Stalk length was generally shorter in the ratoons

resulting to lighter stalk weight of PSR 07-195, VMC 84-524, VMC 86-550 andPHIL 80-13, but

not significantly in PSR 03-171 and VMC 84-947. Likewise, the number of millable stalks/m2

was mostly decreasing from the plant crop until the second ratoon.

In terms of cane yield, varieties with acceptable tonnage of above 80 TC/Ha until the 2nd

ratoon included the two newly released varieties, PSR 03-171 and PSR 07-195 and the positive

checks,PHIL 80-13, and VMC 84-947. On the other hand, VMC 86-550 and VMC 84-524

showed very lowtonnage of 45 and 56 TC/Ha respectivelyin the second ratoon (Figure 8).

In sweetness, PSR 03-171 was slightly lower than PHIL 80-13 and VMC 86-550 but

comparable with VMC 84-524 and VMC 84-947 from the plant, 1st ratoon, and 2nd ratoon crops.

PSR 07-195 was comparable with PHIL 80-13, slightly lower than VMC 86-550 but higher

thanVMC 84-524 and VMC 84-947 from all croppings (Figure 9).In terms of sugar yield,

although there was generally a continued reduction from the plant crop until the 2nd ratoon, PSR

03-171 and PSR 07-195 together with the positive checks, PHIL 80-13 and VMC 84-947 gave

higher sugar yield of above 170 LKg/Ha in the second ratoon (Figure 10).PSR 03-171 was

higher over PHIL 80-13 by 3%, 13%, and 2%; and over VMC 84-947 by 8%, 4%, 10% from the

plant crop, 1st ratoon and 2nd ratoon respectively.PSR 07-195 had 11% and 6% sugar yield

advantage over PHIL 80-13; and 17% and 15% over VMC 84-947 in the plant and 2nd ratoon

crop respectively. However, PSR 07-195 was lower by 2% versus PHIL 80-13 and 9% compared

to VMC 84-947 in the 1st ratoon.Compared to VMC 86-550 the two new varieties were

9

Fig. 9. LKg/TC of PSR 03-171 and PSR 07-195 in comparison with the commercial checks

significantly higher over it in the 2nd ratoon only but both were statistically higher over VMC 84-

524 from the plant crop until the 2nd ratoon in sugar yield.

Fig. 10. LKg/Ha of PSR 03-171 and PSR 07-195 in comparison with the commercial checks

Fig. 10. LKg/Ha of PSR 03-171 and PSR 07-195 in comparison with the commercial checks

Fig. 8. TC/Ha of PSR 03-171 and PSR 07-195 in comparison with the commercial checks

10

SUMMARY AND RECOMMENDATIONS

The inherentgood multi-ratooning capability of a variety has been part of PHILSURIN’s

criteria to release a new HYV. Hence, to quantify the ratooning potential of its newly released

and promising varieties, a ratooning trial was conducted until the 2nd ratoon.The trial had also

gauged the ratoon performance of the two new varieties- PSR 03-171 and PSR 07-195, released

last 2018. These were compared with the proven good ratooners- VMC 84-947 and PHIL 80-13

as positive Check varieties and the poor to moderate ratooners- VMC 86-550 and VMC 84-524

as negative checks.

Harvest results showed that there was a general continuing reduction intonnage from the

plant crop until the 2nd ratoon. The decline was greatly influenced by the shortening of stalk

length and the lowering of stalk population. A very sharp drop in tonnage was observed in VMC

86-550 and VMC 84-524 in the 2nd ratoon. Generally, sugar rendement or LKg/TC was

maintained or improved in the ratoons. However, the significant reduction in tonnage from the

plant crop until the 2ndratoon was reflected in LKg/Ha. Among the recently released varieties,

PSR 03-171, PSR 07-195, PSR 02-247, and PSR 02-272 showed good ratoon yield performance

while PSR 04-172 was moderately high in LKg/Ha.On the other hand, VMC 86-550, PSR 01-

105, and PSR 01-136 were good until the 1stratoon only.

The two newly released varieties showed advantage in sugar yield over the Check

varieties. PSR 03-171 was higher by 3%, 13%, and 2% over PHIL 80-13; and by 8%, 4%, and

10% over VMC 84-947 from the plant crop, 1st and 2ndratoons respectively. On the other hand,

PSR 07-195 was higher by 11% and 6% over PHIL 80-13; and 17% and 15% over VMC 84-947

in the plant and 2nd ratoon crop respectively. Both varieties were significantly higher over VMC

86-550 in the 2nd ratoon; and both were higher over VMC 84-524 from the plant crop until the

2nd ratoon.

These results confirmed the harvest data from the Advance Yield Trials that PSR 03-171

and PSR 07-195 are good ratooners. Hence, both could be recommended for the cropping until

the 2nd ratoon.

11

Appendix Table 1. Average stalk size (cm.) of 24 varieties from the Plant crop until the 2ndRatoon

Variety Plant 1stRatoon 2ndRatoon

Phil 80-13 2.6 2.8 2.8

VMC 86-550 2.6 2.7 2.8

VMC 84-524 2.9 2.9 2.7

VMC 84-947 2.7 2.7 2.8

VMC 67-252 2.7 2.7 2.8

PSR 01-105 2.9 +/+/ 3.0 ///+ 2.7

PSR 01-136 2.9 +/+/ 2.7 2.9

PSR 02-247 2.9 /+/ 3.0 +/+//+ 2.7

PSR 02-272 2.6 //-/ 2.7 2.6 -///-

PSR 03-171 2.8 2.9 2.9

PSR 04-172 2.7 2.7 2.7

PSR 06-122 2.7 2.9 2.6 -///-

PSR 07-45 2.5 //-/ 2.5 -//-/ 2.5 -/-/-/-

PSR 07-66 3.0 +/+//- 3.1 +/+//+ 2.9

PSR 07-195 2.8 /+/ 2.8 2.9

PSR 08-51 2.9 /+/ 2.9 2.8

PSR 08-57 2.9 /+/ 2.9 ///+ 3.0 //+/

PSR 08-61 2.7 2.8 2.6

PSR 08-82 2.6 //-/ 2.8 2.5 -///-

PSR 08-133 2.8 /+/ 2.9 2.6

Phil 99-1793 2.9 +/+/ 3.1 +/+//+ 3.0 +/+/+/+

CYT 74-141 2.6 //-/ 2.8 2.7

CYZ 93-159 2.7 2.9 2.8

M1246/84 2.8 2.9 ///+ 2.8

C.V. 4.48 3.98 4.41

Mean with + or - sign is significantly higher or lower compared to Checks Phil 80-13, VMC 86-550, VMC 84-524, & VMC 84-947 respectively at LSD 0.05

Appendix Table 2. Average stalk length (cm.) of 24 varieties from the Plant crop until the 2ndRatoon Variety Plant 1stRatoon 2ndRatoon

Phil 80-13 269 239 235 VMC 86-550 223 200 176 VMC 84-524 241 203 210 VMC 84-947 233 219 209 VMC 67-252 238 -/ 197 191 -/ PSR 01-105 263 /+//+ 253 /+/+/ 224 /+/ PSR 01-136 222 -/ 181 -///- 177 -///- PSR 02-247 272 /+/+/+ 235 210 /+/ PSR 02-272 238 -/ 201 -/ 191 -/ PSR 03-171 255 /+ 236 220 /+/ PSR 04-172 221 -/ 198 -/ 198 -/ PSR 06-122 257 /+ 241 /+/+/ 219 /+/ PSR 07-45 262 /+//+ 216 191 -/ PSR 07-66 273 /+/+/+ 228 232 /+/ PSR 07-195 221 -/ 190 -/ 186 -/ PSR 08-51 240 -/ 196 -/ 216 /+/ PSR 08-57 233 -/ 205 195 -/ PSR 08-61 224 -/ 195 -/ 182 -/ PSR 08-82 270 /+/+/+ 223 199 -/ PSR 08-133 243 212 197 -/ Phil 99-1793 259 /+ 219 199 -/ CYT 74-141 270 /+/+/+ 236 217 /+/ CYZ 93-159 251 /+ 203 -/ 220 /+/ M1246/84 264 /+//+ 238 /+/+/ 250 /+/+/+

C.V. 5.01 7.61 9.14 Mean with + or - sign is significantly higher or lower compared to Checks Phil 80-13, VMC 86-550, VMC 84-524, & VMC 84-947 respectively at LSD 0.05

12

Appendix Table 4. Average number of stalks/m2 of 24 varieties from the Plant crop until the 2ndRatoon. Variety Plant 1stRatoon 2ndRatoon

Phil 80-13 8.53 7.65 8.40 VMC 86-550 9.78 7.57 5.50 VMC 84-524 8.38 7.43 6.20 VMC 84-947 10.80 11.05 7.93 VMC 67-252 10.85 +//+/ 9.60 +/+/+/ 6.87 PSR 01-105 9.93 8.40 ///- 6.00 -/ PSR 01-136 10.43 +//+ 9.05 ///- 5.63 -///- PSR 02-247 7.95 /-//- 8.15 ///- 7.63 /+/ PSR 02-272 9.73 9.05 ///- 8.60 /+/+/ PSR 03-171 10.38 //+/ 9.93 +/+/+/ 7.73 /+/ PSR 04-172 9.50 9.77 +/+/+/ 7.28 PSR 06-122 9.73 8.68 ///- 9.38 /+/+/ PSR 07-45 9.48 8.53 ///- 5.03 -///- PSR 07-66 8.90 ///- 8.45 ///- 6.60 PSR 07-195 9.88 8.53 ///- 7.77 /+/ PSR 08-51 8.15 ///- 8.28 ///- 7.30 PSR 08-57 7.45 /-//- 7.90 ///- 6.30 -/ PSR 08-61 10.00 11.13 +/+/+/ 9.33 /+/+/ PSR 08-82 10.70 +//+/ 9.23 ///- 7.57 /+/ PSR 08-133 8.97 ///- 8.45 ///- 6.60 -/ Phil 99-1793 8.28 ///- 6.10 ///- 5.33 -///- CYT 74-141 10.75 +//+/ 11.35 +/+/+/ 9.43 /+/+/ CYZ 93-159 9.43 10.55 +/+/+/ 9.43 /+/+/ M1246/84 9.58 9.58 +/+/+/ 8.10 /+/


Appendix Table 3. Average stalk weight (Kg.) of 24 varieties from the Plant crop until the 2ndRatoon Variety Plant 1stRatoon 2ndRatoon

Phil 80-13 1.59 1.68 1.46 VMC 86-550 1.24 1.31 1.15 VMC 84-524 1.56 1.48 1.37 VMC 84-947 1.39 1.47 1.38 VMC 67-252 1.57 1.41 1.25 PSR 01-105 1.64 1.90 /+/ 1.33 PSR 01-136 1.37 1.22 -/ 1.16 -/ PSR 02-247 1.45 1.86 /+/ 1.30 PSR 02-272 1.47 1.30 1.06 ///- PSR 03-171 1.60 1.78 /+/ 1.62 /+/ PSR 04-172 1.31 1.26 1.15 -/ PSR 06-122 1.42 1.78 /+/ 1.24 PSR 07-45 1.24 1.21 -/ 0.97 -//-/ PSR 07-66 2.09 +/+/+/+ 1.94 /+/+/+ 1.80 /+/ PSR 07-195 1.50 1.39 1.27 PSR 08-51 1.60 1.37 1.36 PSR 08-57 1.54 1.59 1.56 /+/ PSR 08-61 1.38 1.36 1.05 -//-/ PSR 08-82 1.68 /+/ 1.55 1.22 PSR 08-133 1.37 1.60 1.27 Phil 99-1793 1.87 /+//+ 1.79 /+/ 1.64 /+/ CYT 74-141 1.47 1.62 1.36 CYZ 93-159 1.43 1.42 1.36 M1246/84 1.49 1.78 /+/ 1.42


13

Appendix Table 5. Average TC/Ha of 24 varieties from the Plant crop until the 2ndRatoon .

Variety Plant 1stRatoon 2ndRatoon Phil 80-13 126 103 83 VMC 86-550 122 87 45 VMC 84-524 117 85 56 VMC 84-947 153 121 81 VMC 67-252 142 104 63 -/+//- PSR 01-105 128 103 62 -///- PSR 01-136 137 86 ///- 46 -///- PSR 02-247 114 ///- 104 80 /+/+/ PSR 02-272 113 ///- 100 81 /+/+/ PSR 03-171 148 //+/ 128 /+/+/ 87 /+/+/ PSR 04-172 110 ///- 90 ///- 64 -/+//- PSR 06-122 135 106 89 /+/+/ PSR 07-45 120 ///- 82 ///- 45 -///- PSR 07-66 145 120 /+/+/ 60 -/ PSR 07-195 144 103 87 /+/+/ PSR 08-51 126 95 73 /+/ PSR 08-57 108 ///- 97 63 -/ PSR 08-61 128 105 80 /+/+/ PSR 08-82 135 101 73 /+/ PSR 08-133 124 93 ///- 56 -///- Phil 99-1793 117 ///- 86 ///- 61 -///- CYT 74-141 152 //+/ 126 /+/+/ 94 /+/+/ CYZ 93-159 128 114 //+/ 93 /+/+/ M1246/84 123 111 72 /+/


Appendix Table 6. Average LKg/TC of 24 varieties from the Plant crop until the 2ndRatoon. Variety Plant 1st Ratoon 2nd Ratoon

Phil 80-13 2.38 2.31 2.34 VMC 86-550 2.42 2.61 2.41 VMC 84-524 2.04 1.94 2.40 VMC 84-947 1.86 2.14 2.21 VMC 67-252 2.03 2.07 /-/ 2.14 /-/ PSR 01-105 1.95 -/-/ 2.23 /-/ 2.01 -/-/-/ PSR 01-136 2.39 ///+ 2.24 /-/ 2.25 PSR 02-247 2.46 //+/+ 2.24 /-/ 2.46 ///+ PSR 02-272 2.12 2.38 2.38 PSR 03-171 2.09 2.09 /-/ 2.27 PSR 04-172 2.45 //+/+ 2.53 //+/+ 2.54 ///+ PSR 06-122 2.00 -/-/ 2.28 /-/+/ 2.06 -/-/-/ PSR 07-45 2.35 ///+ 2.71 +//+/+ 2.34 PSR 07-66 1.94 -/-/ 1.82 -/-//- 1.94 -/-/-/ PSR 07-195 2.32 ///+ 2.25 /-/+/ 2.37 PSR 08-51 2.25 ///+ 2.12 /-/ 2.02 -/-/-/ PSR 08-57 2.23 ///+ 2.38 -//+/ 1.99 -/-/-/ PSR 08-61 2.15 1.95 /-/ 2.05 -/-/-/ PSR 08-82 2.17 2.41 //+/ 2.16 /-/-/ PSR 08-133 2.39 ///+ 2.34 //+/ 2.40 Phil 99-1793 2.05 /-/ 2.00 /-/ 2.09 -//-/ CYT 74-141 1.33 -/-/-/- 1.64 -/-//- 1.41 -/-/-/+ CYZ 93-159 1.80 -/-/ 2.21 /-/ 2.14 /-/ M1246/84 2.22 2.26 /-/+/ 1.99 -/-/-/


14

Appendix Table 7. Average LKg/Ha of 24 varieties from the Plant crop until the 2nd Ratoon.

Variety Plant 1st Ratoon 2nd Ratoon Phil 80-13 300 237 194 VMC 86-550 295 226 108 VMC 84-524 239 165 134 VMC 84-947 285 256 179 VMC 67-252 288 216 135 -///- PSR 01-105 250 229 125 -///- PSR 01-136 327 //+/ 192 ///- 104 -///- PSR 02-247 280 231 //+/ 197 /+/+/ PSR 02-272 240 239 //+/ 193 /+/+/ PSR 03-171 309 //+/ 267 //+/ 197 /+/+/ PSR 04-172 271 229 //+/ 163 /+/ PSR 06-122 270 241 //+/ 183 /+/+/ PSR 07-45 282 222 105 -///- PSR 07-66 281 219 116 -///- PSR 07-195 334 //+/ 232 //+/ 206 /+/+/ PSR 08-51 284 201 147 -/+/ PSR 08-57 241 230 //+/ 125 -///- PSR 08-61 275 204 164 /+/ PSR 08-82 293 242 //+/ 158 /+/ PSR 08-133 296 218 134 -///- Phil 99-1793 240 171 -///- 127 -///- CYT 74-141 202 -/-//- 206 133 -/+/ CYZ 93-159 230 252 //+/ 199 /+/+/ M1246/84 273 249 //+/ 143 -/

C.V. 12 11.89 14.57 Mean with + or - sign is significantly higher or lower compared to Checks Phil 80-13, VMC 86-550, VMC 84-524, & VMC 84-947 respectively at LSD 0.05

15

REFERENCES:

· ___________. Variety Brochure. PHILSURIN’s New Variety Releases for 2014- PSR 01-105, PSR 01-136, and PSR 02-247. ___________. Variety Brochure. PHILSURIN’s Variety Release for 2018- PSR 03-171 and PSR 07-195.

Gomathi, Raju et. al. 2013. Physiological Studies on Ratoonability of Sugarcane Varieties under Tropical Indian Condition. American Journal of Plant Sciences. Vol.4 No. 2. http://dx.doi.org/10.4236/ajps.2013.42036

Lal, M. And Singh, AK. 2008. Multiple Ratooning for High Cane Productivity and Sugar Recovery. In: Proceedings of National Seminar on Varietal planning for Improving Productivity and Suagr Recovery in Sugarcane held at G.B.P.U.A & T. Pantnagar. 14 (15). 62-68.

Masri, M.I. and Amein, M.M. 2015. Yield Potential and Ratooning Ability of some Suagarcane Genotypes. Agronomy Dept. Faculty of Agriculture, Cairo University, Giza, Egypt.

Verma, RS. 2002. Sugarcane Ratoon Management. International Book Distributing Co. Pvt. Ltd., Lucknow. P.202.

Villariez, Haydee P. Demaraye, Jojit A., and Luzaran Rosalyn T. 2016. Sugarcane Varieties with High Sugar Yield and Profitability until the 2nd ratoon. PHILSUTECH Proceedings.

http://dx.doi.org/10.4236/ajps.2013.42036

ratooning capability of recently releasedphilsurin hyvs · ratooning of cane is very essential for...

Documents