The Bananas of Upland East Africa

The Bananas of Upland East Africa - Factorial trial at Kibeta, Bukoba District

Factorial trial at Kibeta, Bukoba District

The site was on the ridge top, above and just outside the southern boundary of Bukoba (Tanzania Grid Reference UP656519) and at approximately 1295 m (4250 feet) asl. The site farmer was Robert Bayeka.

The shamba was in a very poor state with degraded soil and high levels of nematode infestation.

In better manured areas of the shamba toppling due to severe damage to roots by nematodes was seen.

The site layout was a 10X10 stool completely randomized square layout.

COLUMN

ROW

1

2

3

4

5

6

7

8

9

10

1

9

7

6

3

4

4

2

10

2

6

2

8

8

9

7

10

2

9

10

8

8

3

2

7

2

9

3

10

2

8

10

4

4

7

3

4

5

4

7

1

2

7

9

5

5

4

5

5

1

6

7

6

6

5

6

7

6

4

9

1

9

3

6

7

1

7

3

5

6

10

10

5

1

10

3

2

8

4

5

9

10

1

3

1

8

1

1

9

9

5

1

4

6

3

3

8

8

2

10

7

2

3

9

8

6

10

8

5

4

Planting work was on 11.5.89

The treatments were:

1 = sword sucker plus 5 debes cow manure with carbofuran pesticide 3 g a.i.;
2 = one debe of cow manure, no pesticide;
3 = 5 debes cow manure, no pesticide;
4 = NPK mixture, no pesticide;
5 = no manure, with carbofuran pesticide 3 g a.i.;
6 = no manure, isazaphos pesticide 3 g a.i.;
7 = 5 debes cow manure, with carbofuran pesticide 3 g a.i.;
8 = 5 debes cow manure, with isazophos pesticide 3 g a.i.;
9 = NPK mixture, with carbofuran pesticide 3 g a.i.;
10 = NPK mixture, with isazophos pesticide 3 g a.i.

Early germination was photographed on 8.7.89, eight weeks after planting

Plant 1.3, treatment 2, in first week, germinated 8.7.89

Plant 1.4, treatment 7, in fourth week, germinated 17.6.89

Plant 6.1, treatment 4, in second week, germinated 1.7.89

farmer's sucker planted at same time as trial

Variations in growth photographed on 12.12.89 - treatments as shown in bright green - 3 = cow manure, no pesticide; 4 = NPK mixture, no pesticide; 5 = no manure, with carbofuran pesticide; 6 = no manure, isazaphos pesticide; 7 = cow manure, with carbofuran pesticide

Data on the germination and early leaf production are given in TABLE 4, calculations of factorial interactions are in TABLE 5 and a graph of the relation between height and girth (combined from the two factorial trials) is in FIGURE 4.

©2000 - Brian Taylor CBiol FIBiol FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.
Visiting Academic in the Department of Life Science, University of Nottingham

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