Abstract | BACKGROUND: The viability of potato cyst nematode ( PCN) populations (Globodera pallida) was evaluated in three field experiments using Brassica juncea, Raphanus sativus and Eruca sativa amendments. These species were summer cultivated and autumn incorporated in experiment 1; in experiment 2, overwintered brassicaceous cover crops were spring incorporated. Experiment 3 involved determination of effects of metconazole application on biomass/ glucosinolate production by B. juncea and R. sativus and on PCN pre- and post-incorporation. Glucosinolate contents were determined before incorporation. Following cover crop incorporation, field plots were planted with susceptible potatoes to evaluate the biofumigation effects on PCN reproduction. RESULTS: In experiment 1, PCN population post-potato harvest was reduced (P = 0.03) in B. juncea-treated plots, while R. sativus prevented further multiplication, but in experiment 2 there were no significant effects on PCN reproduction. In experiment 3, B. juncea or R. sativus either untreated or treated with metconazole reduced PCN populations. Glucosinolate concentrations varied significantly between different plant regions and cultivation seasons. Metconazole application increased the sinigrin concentration in B. juncea tissues. Glucosinolate concentrations correlated positively with PCN mortality for summer-cultivated brassicaceous plants. CONCLUSION: The results demonstrated that B. juncea and R. sativus green manures can play an important role in PCN management, particularly if included in an integrated pest management scheme.
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Authors | Bruno M Ngala, Patrick P J Haydock, Simon Woods, Matthew A Back |
Journal | Pest management science
(Pest Manag Sci)
Vol. 71
Issue 5
Pg. 759-69
(May 2015)
ISSN: 1526-4998 [Electronic] England |
PMID | 24965697
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | © 2014 Society of Chemical Industry. |
Chemical References |
- Fungicides, Industrial
- Glucosinolates
- Soil
- Triazoles
- sinigrin
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Topics |
- Animals
- Brassicaceae
(metabolism)
- Fumigation
- Fungicides, Industrial
- Glucosinolates
(metabolism, pharmacology)
- Mustard Plant
(metabolism)
- Pest Control
(methods)
- Plant Diseases
(parasitology)
- Raphanus
(metabolism)
- Soil
(parasitology)
- Solanum tuberosum
(parasitology)
- Triazoles
- Tylenchoidea
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