Crop : Sugarcane

Field : Plant breeding

Collaborator : Self

Title : Standard plot trial for early varieties .

Author : R. B. Khandagave and P.G. Satpute.

Year : 1994-95

This experiment was laid down on 21st January 1994 in Randomised Block Designed with three replications. In this trial seven sugarcane early varieties viz. CoC 92061, CoC 671, Co 8013, Co 7704, Co 85004, Co 85009 and Co 6907 included. The quality parameters of these varieties were recorded at 8th, 10th and 12th months (Harvest) of their crop age and also yield and yield attributes recorded at harvest. The details of the observations recorded are as described below:-

(A) Yield attributes and yield.

i) Number of internodes

The number of internodes varied significantly. CoC 92061 and Co 8013 recorded ( 6.83 and 26.40 respectively) significantly higher number of internodes over Co 85004, Co 85009, CoC 671, Co 7704 and Co 6907 which gave 23.47, 22.27, 21.27, 21.13, 20.97 respectively. However CoC 92061 and Co 8013 were found on par with each other. Similarly rest of the five varieties also found on par wtih each other.

ii) Plant height (cm)

With regards to plant height Co 85004, CoC 92061 and Co 8013 were found on par with each other. However Co 85004 and CoC 92061 shown significantly higher plant   height when compared to CoC 671, Co 85009, Co 7704 and Co 6907. In this trial Co 8013, CoC 671 and Co 85009 were found on par with each other. Similar observations also recorded in CoC 671, Co 85009, Co 7704 and Co 6907. Highest plant height was recorded in Co 85004 (257.10) and lowest being in Co 6907 (194.67).

iii) Mean cane weight (Kg)

CoC 92061 recorded significantly mean cane weight (1.55) when compared to CoC 671, Co 8013, Co 85004, Co 85009, Co 6907 and Co 7704 which gave 1.27, 1.12, 1.07, 0.97, 0.96 and 0.91 respectively. In this trial CoC 671 also found significantly superior over rest of the varieties except CoC 92061. Co 8013 and Co 85004 found on par with each other but differed significantly superior over Co 85009, Co 6907 and Co 7704. So Co 85009 recorded significantly superior cane weight when compared to Co 6907 and Co 7704. However later two varieties i.e Co 6907 and Co 7704 were found on par with each other.

iv) Number of millable canes ('ooo/ha)

The number of millable canes for all these seven varieties showed non-significant results. However the highest number of millable canes were recorded in Co 8013(148.00) and lowest was recorded in CoC 92061 (116.00).

v) Yield (MT/ha)

CoC 92061 and Co 8013 gave significantly higher yield (128.81 and 127.15 respectively) when compared to Co 85004, CoC 671, Co 6907, Co 85009 and Co 7704 which gave 116.95, 111.99, 104.81, 98.52 and 90.04 respectively. Co 85004 and CoC 671 were found on par with each other but Co 85004 recorded significantly higher yield when compared to Co 6907, Co 85009 and Co 7704. However CoC 671 were found on par with each other. But CoC 671 recorded significantly higher yield over Co 85009 and Co 7704 though it recorded on par with Co 6907.

vi) C.C.S. Percentage

C.C.S. Percentage of CoC 92061, CoC 671, Co 85004 differed significantly over Co 85009 and Co 6907. However CoC 92061 (15.12) CoC 671 (14.95), Co 85004 (14.83),Co 8013 (14.67) and Co 7704 (14.62) were found on par with each other. Co 8013, Co 7704 and Co 85009 were also found on par with each other. Similarly Co 85009 (13.76) and Co 6907 (13.28) recorded on par with each other with respect to C.C.S. Percentage.

(B) Quality parameters

i) Brix percentage

Brix percentage at 8th month showed non-significant results however highest brix was recorded in CoC 671 (20.37) and lowest was recorded in Co 85004 (18.63). Similarly at 10th months there was no significant results of these varieties with respective brix percentage. However highest numerial value observed in Co 8013 (20.27) and lowest in Co 6907 (18.37). At 12th months CoC 671 (22.05) CoC 92061(21.08) Co 85004 (21.64) Co 7704 (21.16) shown significantly superior over Co 8013 (21.03) Co 85009 (20.20) and Co 6907 (19.50). However Co 8013 and Co 85009 were found on par with each other but Co 8013 differed significantly superior over Co 85009 and Co 6907. But Co 85009 and Co 6907 were also found on par with each other.

ii) Pol percent

At 8th month of crop age Co 6907, Co 85004, CoC 671, Co 85009 and CoC 92061 recorded significantly higher pol value (17.87, 17.62, 17.31, 17.20 and 17.16 respectively) compared toCo 7704 and Co 8013 which gave 16.81 and 16.22 respectively. It also observed that CoC 671, Co 85009, CoC 92061 and Co 7704 were found on par with each other. Co 7704 and Co 8013 were found on par with each other. At 10th month of crop age CoC 92061 (18.61) recorded significantly higher pol values when compared to Co 85009 and CoC 671 and Co 6907 which gave 17.76, 17.27 and 16.74 respectively. CoC 92061, Co 7704, Co 85004, Co 8013 were found on par with each other. Similarly CoC 671, Co 85009, Co 8013, Co 85004 also gave non- significant results. But CoC 671 and Co 6907 were found on par with each other. At 12th month of crop age CoC 92061, CoC 671, Co 85004, Co 8013 and Co 7704 which gave 20.16, 19.93, 19.77, 19.55 and 19.49 respectively recording significantly higher pol values compared to Co 85009 and Co 6907 which recorded 18.35 and 19.71 respectively. However CoC 92061, CoC 671, Co 85004, Co 8013 and Co 7704 were found on par with each other.

iii) Reducing sugar percent

Reducing sugar percentage of all these varieties at 8th, 10th and 12th months of crop age showed non-significant results. However at 8th month highest reducing sugar recorded in Co 7704 (0.930) and lowest in Co 85004 (0.860). Similarly at 10th months highest and lowest were Co 7704 (0.883) and CoC 671 (0.789) and also Co 8013 (0.789) respectively. At 12th months highest was recorded in Co 6907 (0.976) and lowest in CoC 671 (0.678).

iv) Fibre percent

Fibre percent showed non-significant results at 8th, 10th and 12th months. However highest numerical value at 8th month observed in Co 85008 (13.47) and lowest in Co 7704 (12.80). At 10th months highest numerical value recorded in Co 8013 (13.99) and lowest in CoC 92061 (13.67). Similarly at 12th months highest numerical fibre value recorded in Co 7704 (14.37) and lowest in CoC 671 (13.41).

v) Moisture percentatge

The moisture percentage at 8th, 10th and 12th months of crop age of all these seven varieties produced non-significant results. However the highest numerical value at 8th month of crop age was observed in Co 85009 (74.67) and lowest being Co 85004 (73.00) and Co 6907 (73.00). At 10th months numerically highest moisture content was observed in Co 6907 (70.67) and lowest in Co 8013 (69.33). Similarly at 12th months highest numerical value recorded in Co 85009 (69.83) and lowest in Co 85004 (68.67).

Conclusion

From the above elucidated data it can be concluded that CoC 92061 showing significantly superior over CoC 671 which is a ruling variety in the area of operation of Godavari Sugar Mills. The superiority of CoC 92061 was observed owing to the yield attributing parameters like plant height and mean cane weight. Ultimately producing significantly higher yields over CoC 671. The increased yield of CoC 92061 over CoC 671 was noticed to the tune of 15%. In this trial though the CoC 92061 produced lesser N.M.C compared to other varieties but by the virtue of its mean cane weight which found highest among all the seven varieties in the trial it produced higher cane yield. It is also worth-noting that the performance of Co 8013 which produced significantly superior yield levels by the virtue of its higher N.M.C without hammering its C.C.S. percentage when compared CoC 671. Therefore, it can be concluded that CoC 92061 and Co 8013 are better substitutes for CoC 671 as these varieties under the trial were shown non-flowering habit for this locality however Co 85004 and Co 85009 are flowering types.

Since CoC 92061 and Co 8013 gave significantly higher yield over ruling CoC 671 without having left any deleterious effect on pol percent, C.C.S percent at the same time limit. Therefore, producing more sugar per unit area and per unit time will be added advantage which can be achieved by introducing these elite sugarcane cultivars in the area of operation.

Table 2a. Table ahowing yield and yield attributes of early varieties :

Table No. 2b. Table showing quality parameters of early varieties at 8th, 10th and 12th months of their crop age : Season 1994-95.