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Title :
Evaluation of promising varieties for early, mid and late crushing season ( 6
Experiments).
Author : R. B.
Khandgave and S. S. Kagi.
A field
experiment was conducted during 1995-96 at KIAAR, Sameerwadi to study the response of
different varieties of sugarcane for different months of harvesting. Sugarcane varieties
included in the trial were CoC 671, CoC 92061, Co 85246, Co 87044, Co 86032, CoM 88121 and
Co 8014 and four dates of harvest at bi-monthly intervals i.e 10th, 12th, 14th and 16th
month. The experiments were laid out in two factorial Randomised Block Design. All the
recommended practices viz., seed rate, fertilizer application, irrigation etc. were
followed uniformly for all the experimental plots. This project consists of six monthly
sowing dates from September to February. The results obtained from each experiment are
elucidated below. (Experiment 1 to 6).
Experiment No. 1.
Evaluation of promising varieties for early, mid and late
crushing season
(Planting in the Month of September-95).
a) Yield and
yield attributes (Table 5)
Observations on
germination percentage, cane formed shoots (lakh/ha), plant height(cm), number of
internodes, number of millable canes (lakh/ha), cane yield (MT/ha), CCS yield (MT/ha) were
recorded.
Observations of
Brix %, Pol % in juice and reducing sugar were recorded.
From the
observations in Table 5 it can be concluded that CoC 92061 and CoC 671produced higher cane
yield and sugar yield compared to other varieties. However Co 85246 by virtue of its
higher pol contribution produced equivalent sugar yields as that CoC 92061 and CoC 671. It
is also worth noting that as the age advances the accumulation of sugar and cane yield
also increased.
Experiment No. 2.
Evaluation of promising varieties for early, mid and late crushing season ( October - 95
planting ).
a) Yield and
yield attributes (Table 6)
Observations of
germination percentage, plant height (cm), number of internodes, number of millable canes
(lakh/ha). cane yield (MT/ha), CCS yield (MT/ha) etc. were recorded.
For quality
parameters observations on Brix %, Pol percent in juice and reducing sugars were recorded.
CoC 92061 and CoC
671 produced higher cane yield and sugar yield compared to other varieties. It is also
worth noting that as the age advances the accumulation of sugar and cane yield increased.
Experiment No. 3.
Evaluation of promising varieties for early, mid and late
crushing season (
November - 95 planting ).
a) Yield and
yield attributes (Table 7)
The observations
on germination percentage, cane formed shoots, (lakh/ha), plant height (cm), Number of
internodes, Number of millable canes ('ooo/ha) CCS yield (MT/ha) etc. were recorded.
Observations like
Brix, Pol Reducing sugar were recorded. Interaction effect of all the parameters shown
non-significant difference.
The experiment
planted in the month of November resulted in identification of Co 86032, CoC 671 and CoC
92061 as equal performers with respect to cane and CCS yield. However Co 85246, Co 87004
and Co 8014 have shown lower cane and CCS yields.
As age advanced
there is significant increase in cane and sugar yields from 10th to 16th month in all the
varieties except Co 8014 which has shown faster deterioration with advancement of age of
harvesting.
Experiment No. 4.
Evaluation of promising varieties for early, mid and late crushing season ( December - 95
planting ).
a) Yield and
yield attributes (Table8)
The observations
on germination percentage cane formed shoots (lakh/ha), Plant height (cm), Number of
internodes, Number of millable canes ('ooo/ha), Cane yield (MT/ha) CCS yield
(MT/ha) etc. are recorded.
Obserations on
quality parameters like, Brix %, Pol %, Reducing Sugar in juice were recorded.
The experiment
planted in the month of December showed CoC 92061, CoC 671, Co 86032 and also Co 88044 to
be better performers. However, optimum age of harvest for this month of planting was found
to be 14th month, as beyond 14th month, faster degradation in quality was observed in most
of the varieties.
Experiment No. 5.
Evaluation of promising varieties for early, mid and late crushing season ( January - 96
planting ).
a) Yield and
yield attributes (Table 9)
The observations
on germination percentage, cane formed shoots (lakh/ha), plant height (cm), number of
internodes, number of millable canes ('ooo/ha) cane yield (MT/ha), CCS yield (MT/ha) etc.
are recorded.
Quality
parameters like Brix%, Pol%, Juice and Reducing sugars were recorded.
Planting in the
month of January and harvesting at 10th, 12th, 14th and 16th months after planting in case
of seven sugarcane varieties showed that though CoM 88121 produced yields on par
with Co 86032, CoC 92061 and CoC 671 with respect to cane yield, however by virtue of its
lower mean pol content, it failed to yield higher CCS tonnage. Hence results
indicate that CoC 92061, Co 86032 and CoC 671 are better yielders both interms of cane and
CCS yield. The age of harvest produced significant results at 16th month producing highest
CCS yield. However by considering pol percent- age it is advisable to choose 12 to 14th
month for harvesting as ideal for getting higher pol value for the plant cane which
is planted in the month of January.
Experiment No.
6. Evaluation of promising varieties for early, mid and late crushing season (
February - 96 planting ).
a) Yield and
yield attributes (Table 10)
The observations
on germination percentage, cane formed shoots (lakh/ha), plant height (cm), number of
internodes, number of millable canes ('ooo/ha) cane yield (MT/ha), CCS yield (MT/ha) etc.
are recorded.
Quality
parameters like Brix%, Pol%, and Reducing sugars were recorded.
February planted
sugarcane produced significant increase in cane yield in case of Co 86032, CoC 92061, CoC
671, Co 87044 and CoM 88121. But by virtue of higher pol content CoC 92061, Co 85246 and
CoC 671 produced equal results with respect to CCS yield. 14th month of harvesting was
found to be optimum and it is also worth noting that extending harvest beyond 14th month
reduced the sugar yield and also there was no appreciable increase in the yield at 16th
month of harvest compared to 14th increase in the yield at 16th month of harvest compared
to 14th month of harvest.
Summary of
evaluation of promising varieties for early, mid and late crushing season.
The net out come
of the results of six experimental trials are presented below. It can be inferred from the
results, that CoC 92061 undoubtedly produced higher cane and CCS yields. CoC 671 though of
lower order (4th) interms of cane yield but rose to higher order (2nd) in producing CCS
yield by its known higher sucrose content. Similar trend is noticed with Co 85246. It is
also worth noting Co 86032 stood amongst top three interms of cane and CCS yield. CoM
88121 though produced cane yield of higher order but virtually failed in producing higher
CCS yields. Co 8014 one of the ruling mid late variety produced lowest cane and CCS
yields. Therefore, CoC 92061, Co 86032, CoC 671 and Co 85246 proved to be equivalent
performers for producing higher cane and sugar yields. Advance in the age of harvest
greatly increased cane and CCS yield. However increase in age of harvest from 10th
to 14th is more pronounced than at 16th month.
Similar trend was
noticed in CCS yield. Data also brings out the point that percentage increase in terms of
CCS yield was much more than in cane yield with increase in crop age.
Average cane and
CCS yield of different varieties.
Average cane
and CCS yield at different age of harvest and percentage increase.
Table 5.
EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON (SEPTEMBER)
(1996-97)
Table 6.
EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON (OCTOBER)
(1996-97)
Table
7. EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON (NOVEMBER)
(1996-97)
Table 8.
EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON (DECEMBER)
(1996-97)
Table 9.
EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON (JANUARY)
(1996-97)
Table 10.
EVALUATION OF PROMISING VARIETIES FOR EARLY, MID AND LATE CRUSHING SEASON
(FEBRUARY)(1996-97)
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