|
Treatments Rates/ml |
*Plant growth response |
Shoot Dry wt.
(g) |
Inc.% |
Shoot Length
(cm) |
Inc.% |
Shoot fresh
wt. (g.) |
Root fresh wt.(g.) |
Total Plant fresh wt.(g) |
Inc. % |
| Clayey Soil |
| Bio-arc |
5
10
15
20 |
18.3e |
35.6 |
10.9de |
5.8d |
16.7 |
26.5 |
1.7ef |
70.0 |
| 21.0d |
55.6 |
11.3c-e |
5.8d |
17.1 |
29.5 |
1.7ef |
70.0 |
| 22.0cd |
63.0 |
11.7c-e |
6.2d |
17.9 |
35.6 |
2.2de |
120.0 |
| 23.0c |
70.4 |
12.0cd |
6.7cd |
18.7 |
41.7 |
2.8cd |
180.0 |
| Nemastrol |
0.25 |
27.0a |
100.0 |
13.7a-c |
8.8a |
22.5 |
70.5 |
3.0b-d |
200.0 |
| Bio-arc+Nemastrol |
5+0.25
10+0.25
15+0.25
20+0.25 |
25.0b |
85.2 |
12.4b-d |
8.5ab |
20.9 |
58.3 |
3.2a-c |
220.0 |
| 25.3ab |
87.4 |
13.6a-c |
8.7a |
22.3 |
68.9 |
3.5a-c |
250.0 |
| 25.5ab |
88.9 |
14.9ab |
8.5ab |
23.4 |
77.3 |
3.7ab |
270.0 |
| 26.0ab |
92.6 |
15.9a |
9.4a |
25.3 |
91.7 |
3.9a |
290.0 |
| Oxamyl |
18.8e |
39.3 |
11.9cd |
7.6bc |
19.5 |
47.7 |
1.3f |
30.0 |
| Plant free of N |
13.8f |
2.2 |
11.1de |
9.2a |
20.3 |
53.8 |
1.2f |
20.0 |
| N alone |
13.5f |
0.0 |
9.3e |
3.9e |
13.2 |
0.0 |
1.0f |
0.0 |
| Sandy Soil |
| Bio-arc |
5
10
15
20 |
12.9ef |
7.5 |
2.1f |
2.5ef |
4.6 |
70.4 |
0.6g-i |
50.0 |
| 14.5e |
20.8 |
2.1ef |
2.9d-f |
5.0 |
85.2 |
0.9f-h |
125.0 |
| 17.3d |
44.2 |
2.9de |
2.5e-g |
5.4 |
100.0 |
1.5d |
275.0 |
| 22.3c |
85.8 |
4.4c |
3.0de |
7.4 |
174.1 |
1.8cd |
350.0 |
| Nemastrol |
0.25 |
13.3ef |
10.8 |
2.1f |
1.8gh |
3.9 |
44.4 |
1.0fg |
150.0 |
| Bio-arc+Nemastrol |
5+0.25
10+0.25
15+0.25
20+0.25 |
18.0d |
50.0 |
3.1d |
2.2f-h |
5.3 |
96.3 |
1.0ef |
150.0 |
| 22.5c |
87.5 |
5.4b |
4.5c |
9.9 |
266.7 |
2.2ab |
450.0 |
| 25.5ab |
112.5 |
5.7b |
5.3b |
11.0 |
307.4 |
2.1bc |
425.0 |
| 27.3a |
127.5 |
6.7a |
6.0a |
12.7 |
370.4 |
2.5a |
525.0 |
| Oxamyl |
18.5d |
54.2 |
1.3g |
1.6h |
2.9 |
7.4 |
0.6hi |
50.0 |
| Plant free of N |
24.0bc |
100.0 |
4.2c |
3.3d |
7.5 |
177.8 |
1.5de |
275.0 |
| N alone |
12.0f |
0.0 |
1.0g |
1.7h |
2.7 |
0.0 |
0.4i |
0.0 |
|
| Means in each column followed by the same letter(s) did not differ at P±0.05 according to Duncan`s multiple range test*Each value presented the mean of four replicates N = M. incognita (2000 eggs/ plant) |
| Table 1: Impact of Bio-arc (Bacillusmegaterium) and Nemastrol (a mixture of active ingredients) on plant growth response of sugar-beet var. Negma grown in two soil types infected with M. incognita under greenhouse conditions (27 ± 3°C). |
