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Crop : Sugarcane.

Field : Agronomy.

Collaborator : Self

Title : Interaction of NPK Ratoon Crops of June Planted Cane.

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

Year :1981

In ratoon crop of June planted Co 6415 NPK fertilizers interactions was studied. The trial was initiated in June 1980 with 12 treatments and 5 replications in a split plot design. Data on quality was collected at 11 months age (Table 5:1). The crop was harvested at 12 months age. Table 5:2 shows the data on yield. The interactions did not show statistical significance.

N.P.K. INTERACTION TRIAL

TABLE- 5:1. Data Showing Juice Quality at 11 Months Age.

1. Treatments : 12

5. Design : Split Plot

2. Replication : 5

6. Date of Ratooning : 18th June 1980

3. Variety : Co 6415

7. Date of Harvesting : 21st July 1981.

4. Plot Size : 124.2 Sqm.

        

Sl.No.

Treatments

Juice Quality
       

Brix

Pol %

Purity

1

N50 + P0 + K0

18.45

15.92

86.24

2

N50 + P1 + K0

19.72

17.26

87.44

3

N50 + P1 + K1

18.77

15.73

84.41

4

N50 + K1 + Po

19.15

16.12

84.17

5

N100 + P0 + K0

19.62

16.93

87.12

6

N100 + P1 + K0

19.61

17.08

87.50

7

N100 + P1 + K1

19.45

16.80

86.33

8

N100 + K1 + P0

19.94

17.15

87.76

9

N150 + P0 + K0

19.70

17.42

87.21

10

N150 + P1 + K0

20.12

17.90

88.95

11

N150 + P1 + K1

18.56

15.74

84.64

12

N150 + K1 + K0

19.62

16.98

86.42

N.P.K. INTERACTION TRIAL

TABLE- 5:2. Data Showing Yield qtls/plot.

1. Treatments : 12

   

5. Design : Split Plot

           

2. Replication : 5

   

6. Date of Ratooning : 18th June 1980

      

3. Variety : Co 6415

   

7. Date of Harvesting : 21st July 1981.

      

4. Plot Size : 124.2 Sqm.

                

5:2-1. Yield qtls/plot.

Sl.No.

Treatments

R-I

R-II

R-II

R-IV

R-V

Total

Mean

1

N50

6.87

6.68

5.60

6.79

5.90

31.84

6.37

2

N100

7.47

5.95

8.63

5.48

7.30

34.83

6.97

3

N50 + P

5.99

6.27

4.87

5.43

4.95

27.51

5.50

4

N100 + P

9.70

8.95

7.55

7.35

6.58

40.13

8.03

5

N50 + P+K

6.15

5.73

4.55

6.79

5.40

28.62

5.72

6

N100+P+K

7.74

6.20

7.96

7.39

8.25

37.54

7.51

7

N50 + K

6.38

5.74

5.29

7.20

4.35

28.96

5.79

8

N100 + K

7.99

5.90

8.42

8.30

7.20

37.81

7.56

9

N150

9.69

6.93

9.96

7.28

6.17

40.03

8.01

10

N150 + K

8.13

8.66

8.80

6.62

8.89

41.10

8.22

11

N150 + P

8.37

10.93

8.79

8.56

7.80

44.45

8.89

12

N150+P+K

8.06

7.47

8.49

8.88

9.10

42.00

8.40
  

Total

92.54

85.41

88.91

86.07

81.89

434.82

86.97
   

Mean

7.71

7.11

7.40

7.17

6.82

38.23

7.23

5:2-2. 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.

4

5.31

1.3275

1.021

2.565

3.74

      

Treatments

11

73.25

6.6590

5.120

2.05

2.91

      

Error

44

73.25

1.3

               

Total

59

                     
  

'F' Significant at 5% level.

               

5:2-3. Summary of Results.

Sl.No.

Treatments

Mean yields tonnes/ha

               

1

N50

51.27

                   

2

N100

56.08**

               

3

N50 + P

44.29@

               

4

N100 + P

64.62*

                         

5

N50 + P+K

46.08@

          

6

N100+P+K

60.45*

          

7

N50 + K

46.63@

          

8

N100 + K

90.88*

          

9

N150

64.31*

          

10

N150 + K

66.18*

          

11

N150 + P

71.58*

          

12

N150+P+K

67.63*

          

C.D. = 0.9768

                  

* = Significant at 5% level.

              

@ = Non significant.

                

 

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