Control of Globodera spp. Using Brassica juncea Seed Meal and Seed Meal Extract
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Sep 26, 2018
About this article
Published Online: Sep 26, 2018
Page range: 437 - 445
Received: Apr 08, 2017
DOI: https://doi.org/10.21307/jofnem-2017-093
Keywords
© 2017 LOUISE-MARIE DANDURAND et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Effect of Brassica juncea seed meal on hatch of Globodera ellingtonae eggs_
| Rate (t/ha) | Trial 1 | Trial 2 |
|---|---|---|
| Hatch (%)
|
||
| Nonamended | 56.3 ± 3.5 a
|
56.7 ± 4.1 a |
| 2.2 | 43.7 ± 3.1 a | 33.9 ± 4.2 b |
| 4.5 | 7.9 ± 5.2 b | 32.9 ± 5.0 b |
| 6.7 | 8.8 ± 2.1 b | 14.2 ± 3.3 c |
| 8.9 | 0.1 ± 0.2 b | 0.1 ± 0.1 d |
Percentage hatch of Globodera pallida eggs after a 2-wk exposure to five rates of Brassica juncea seed meal extract, followed by a greenhouse bioassay to assess reproduction of exposed cysts on potato ‘Désirée’ for 16 wk_
| Extract rate (t/ha) | Trial 1 | Trial 2 | ||
|---|---|---|---|---|
| Hatch (%) | Cysts per pot | Hatch (%) | Cysts per pot | |
| Nonamended | 70.0 ± 6.5 a
|
538.3 ± 62.6 a | 9.6 ± 4.0 a | 60.4 ± 26.8 a |
| 1.1 | 1.0 ± 0.3 b | 1.0 ± 0.8 b | 0.8 ± 0.8 b | 0.2 ± 0.2 b |
| 2.2 | 1.8 ± 0.5 b | 0.2 ± 0.2 b | 0.6 ± 1.3 b | 0 b |
| 3.3 | 0.2 ± 0.2 b | 0.0 ± 0.0 b | 0.4 ± 0.5 b | 0 b |
| 4.5 | 0.2 ± 0.2 b | 0.4 ± 0.4 b | 0.2 ± 0.4 b | 0 b |
Percentage change in Globodera ellingtonae egg densities and percentage hatch of eggs exposed to Brassica juncea (Bj) seed meal in the field at Powell Butte, OR_
| Treatment | 2013 | 2014 | 2015 | ||
|---|---|---|---|---|---|
| Reduction in egg number (%)
|
Hatch (%) | Reduction in egg numbers (%) | Hatch (%) | Reduction in egg numbers (%) | |
| Bare ground | ND
|
74.3 ± 3.2 a
|
41.8 ± 12.8 | 65.2 ± 5.3 a | 52.3 ± 7.4 |
| Oats | 68.1 ± 3.0 | ND | 58.3 ± 10.8 | ND | ND |
|
|
86.7 ± 5.4 | 37.6 ± 4.9 b | 59.4 ± 8.7 | ND | ND |
|
|
77.7 ± 7.5 | 0.1 ± 0.1 c | 48.3 ± 8.3 | 11.2 ± 9.1 b | 56.1 ± 10.1 |
Hatch of Globodera ellingtonae after exposure to Brassica juncea seed meal and seed meal extract in a greenhouse trial_
| Treatment | Trial 1 | Trial 2 |
|---|---|---|
| Hatch (%)
|
||
| Seed meal 2.2 t/ha | 0 a
|
0 a |
| Seed meal extract 1.1 t/ha | 1.0 ± 1.0 a | 0a |
| Nonamended | 73.2 ± 3.2 b | 59.8 ± 4.2 b |
Globodera pallida egg densities and percentage hatch of eggs exposed to Brassica juncea seed meal extract (4_5 t/ha) for 10 wk (2015) or 6 wk (2016) in Shelly, ID_
| Treatment | 2015 | 2016 | ||
|---|---|---|---|---|
| Eggs per cyst | Hatch (%) | Eggs per cyst | Hatch (%) | |
| Bare soil | 299 ± 20 a
|
ND
|
100 ± 29 | 19.0 ± 2.9 a |
|
|
81 ± 14 b | ND | 139 ± 16 | 1.9 ± 2.8 b |
|
|
0.001 | - | 0.15 | 0.001 |
Effect of a 2-wk exposure to Brassica juncea seed meal on Globodera pallida reproduction on potato ‘Désirée’_
| Rate (t/ha) | Trial 1 | Trial 2 |
|---|---|---|
| Cysts per pot | ||
| Nonamended | 303.0 ± 82.0 a
|
234.0 ± 44.0 a |
| 2.2 | 0.0 ± 0.0 b | 0.0 ± 0.0 b |
| 8.9 | 0.3 ± 0.3 b | 0.0 ± 0.0 b |