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Crop : Sugarcane.

Field : Agronomy/Soil Science.

Collaborator : Self

Title : Use of Sugarcane Bagasse to Prevent Leaching of Urea.

Author : R.Narasimhan and G.S.C. Rao.

Year : 1981

To check leaching losses of urea, these experiment on use of sugarcane bagasse was initiated in June, 1980 and harvested in November-1981. Table 4:1 gives the number of shoots per hactare at 120 days, height of canes at 8.5 months and juice quality at 9 months and 10 months age. The data on final yield and millable cane number are summarised and appended in Table 4:2, 4:3. Nitrogen which was applied in continuation with bagasse observed to be more effective and at low levels of nitrogen, addition of Bagasse was detrimental to nitrogen uptake.

UREA + BAGASSE COMBINATION TRIAL

TABLE - 4:1. Data Showing Shoot Count, Height and Quality.

1. Treatments : 8

5. Design : Randomised Block Design.

2. Replications : 4

6. Date of Planting : 4th July 1980

3. Variety : Co 740

7. Date Harvesting : 20th November 1981.

4. Plot Size : 40 Sqm.

    

 

Treatments

No. of

Height in

Juice Quality
  

shoots/ha

meters at

9 Months

10 Months
     

8.5 months

Brix

Pol

Purity

CCS %

Brix

Pol

Purity

N-0

150062

1.21

18.26

16.17

88.41

11.19

18.40

17.55

89.85

N-50

171437

1.34

17.18

14.46

84.11

9.76

17.47

14.93

85.38

N-100

175875

1.48

17.49

14.87

84.82

10.09

17.75

15.49

87.26

N-150

178687

1.50

16.70

13.77

82.47

9.20

16.85

14.38

85.36

N-0 + B

154125

1.07

16.83

14.76

86.61

10.17

17.32

14.86

85.66

N-50 + B

167250

1.50

17.38

15.12

86.75

10.37

17.81

14.85

83.29

N-100 + B

178937

1.31

17.50

15.17

86.33

10.40

17.76

15.19

85.50

N-150 + B

178687

1.66

16.96

14.11

82.86

9.47

17.36

14.86

85.39

UREA + BAGASSE COMBINATION TRIAL

TABLE - 4:2. Data Showing Yield Qtls/plot.

1. Treatments : 8

5. Design : Randomised Block Design.

2. Replications : 4

6. Date of Planting : 4th July 1980

3. Variety : Co 740

7. Date Harvesting : 20th November 1981.

4. Plot Size : 40 Sqm.

           

4:2-1. Yield qtls/plot.

Treatments

R-I

R-II

R-II

R-IV

Total

Mean

N-0

4.97

4.65

4.89

5.33

19.84

4.96

N-50

7.93

6.26

6.18

5.38

25.75

6.43

N-100

6.85

6.55

6.81

8.60

28.81

7.20

N-150

8.25

7.11

6.78

8.02

30.16

7.54

N-0 + B

4.83

4.13

4.16

4.56

17.68

4.42

N-50 + B

6.08

7.81

7.42

5.43

26.74

6.68

N-100 + B

8.62

6.68

7.45

6.25

29.00

7.25

N-150 + B

10.40

6.15

6.67

8.95

32.17

8.04

Total

57.93

49.34

50.36

52.52

210.15

52.53

Mean

7.24

6.17

6.29

6.56

26.27

6.56

4:2-2. Analysis of variance.

Source of

Degrees of

Sum of

Mean sum

'F' calcula

'F' Table value

variation

freedom

squares

of squares

ted values

5%

1%

Rep.

3

5.52

1.84

1.849

    

Treatments

7

44.63

6.37

6.4

2.49

3.66

Error

21

20.91

0.995

         

Total

31

            
  

'F' Significant at 1% level.

        

4:2-3. Summary of Results.

Sl.No.

Treatments

Mean yields tonnes/ha

        

1

N-0

124.00

        

2

N-50

160.75

            

3

N-100

180.00

            

4

N-150

188.50

            

5

N-0 + B

110.50

            

6

N-50 + B

167.00

            

7

N-100 + B

181.25

            

8

N-150 + B

201.00

        

Treatments non significant (C.D. = 5.7)

UREA + BAGASSE COMBINATION TRIAL

TABLE - 4:3. Data Showing Millable Canes/ha.

1. Treatments : 8

5. Design : Randomised Block Design.

2. Replications : 4

6. Date of Planting : 4th July 1980

3. Variety : Co 740

7. Date Harvesting : 20th November 1981.

4. Plot Size : 40 Sqm.

            

4:3-1. Millable Canes/ha.

Treatments

R-I

R-II

R-II

R-IV

Total

Mean

N-0

10.75

9.22

9.3

9.8

39.07

9.76

N-50

13.10

11.90

11.00

12.15

48.15

12.03

N-100

12.37

12.42

13.36

14.41

52.56

13.14

N-150

13.72

14.60

12.80

14.50

55.63

13.90

N-0 + B

12.05

8.80

10.60

10.77

42.22

10.55

N-50 + B

9.93

13.97

13.90

12.85

50.65

12.66

N-100 + B

13.12

10.82

12.90

13.27

50.11

12.52

N-150 + B

14.42

13.02

12.95

14.95

55.34

13.83

Total

99.46

94.75

96.82

102.69

393.72

98.59

Mean

12.43

11.84

12.10

12.83

48.21

12.32

4:3-2. Analysis of variance.

Source of

Degrees of

Sum of

Mean sum

'F' calcula

'F' Table value

variation

freedom

squares

of squares

ted values

5%

1%

Rep.

3

4.41

1.47

1.139

3.05

4.82

Treatments

7

61.38

8.76

6.79**

2.47

3.60

Error

21

27.18

1.29

         

Total

31

               
  

'F' Significant at 1% level.

      

4:3-3. Summary of Results.

Sl.No.

Treatments

Mean yields tonnes/ha

      

1

N-0

97600@

      

2

N-50

120300*

      

3

N-100

131400*

      

4

N-150

139000*

      

5

N-0 + B

105500@

      

6

N-50 + B

126400*

      

7

N-100 + B

125200*

      

8

N-150 + B

138300*

      
  

C.D. for Treatments : 1.268

      
  

* = Significant at P = 5 % level.

      
 

@ = Non Significant.

         

 

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