• Aucun résultat trouvé

Management of Tuta absoluta

N/A
N/A
Protected

Academic year: 2021

Partager "Management of Tuta absoluta"

Copied!
17
0
0

Texte intégral

(1)

1

(2)

2

Tuta absoluta: an invasive alien species

Invasive alien species are plants, animals, pathogens and other

organisms that are non-native to an ecosystem, and which may cause

economic or environmental harm or adversely affect human health.

(3)

3

Why is this pest a threat?

The « enemy release » hypothesis

(4)

4

Integrated management of Tuta absoluta

A sound combination of tools…

Tuta

absoluta

Cultural

control

Biological

control

Biotechnical

control

Physical

control

Host

resistance

Conventional

pesticides

Monitoring

(5)

5

Integrated management of Tuta absoluta

…targeting each stage of the pest.

Biological

control

Physical

control

Host

resistance

Biorational

chemical

agents

(6)

6

 Pheromone traps - 2-4 traps/ha and weekly observation

 Egg/larvae or damage sampling

Monitoring

(7)

7

Cultural control

 Destroy previous crop residue.

 Remove host weeds near the field or greenhouse.

 Check the seedlings before transplanting to ensure they are free

of eggs and larvae.

 Remove and destroy any infected leaves, shoots and fruit

immediately.

(8)

8

Physical control

 Grow tomato seedlings inside a netted nursery.

 Double check the net to make sure the greenhouse does not

have holes or gaps.

 Install a secure door in the greenhouse to prevent moths from

entering.

(9)

9

Host plant resistance

 Breeding resistant host plants

Constitutive defenses

Induced defenses

(10)

10

Biotechnical control

Mass trapping (20-25 traps/ha greenhouse, 40-50 open field)

Mating disruption (30-60 g of pheromone/ha)

(11)

11

Biological control

(12)

12

Nesidiocoris tenuis and Macrolophus pygmaeus

(Hemiptera, Miridae)

(13)

13

Trichogramma achaeae (Hymeno., Trichogrammatidae)

Egg parasitoids

(14)

14

Stenomesius japonicus and Necremnus tutae

(Hymenoptera, Eulophidae)

(15)

15

Bacillus thuringiensis var. kurstaki or aizawaii

(16)

16

Biological control

Classical

Conservation

Augmentative

…..

Banker plants

Trophic resources

Refuges

T. achaeae

(inundative)

M. Pygmaeus

N. tenuis

(inoculative)

(17)

17

Références

Documents relatifs

alien species, biodiversity, climate change, ecosystem services, management scenarios, Nature’s Contribu- tion to People, non-native species, participatory planning, risk

We will say a module has f ud whenever it has finite uniform dimension. Through- out, we assume all rings are associative rings with identity, and all modules are right R-modules.

- In case of very different sclare measures between the variables, it is better to use the normalized Euclidean distance to give all the variables the same weight.. Note that this

We demonstrate how the scheme can be used, in combination with existing risk assessment scores, to indicate priorities for eradication and contingency planning; and examine

It is characterised by four light and five dark longitudinal stripes along its sides, and a light brown tail with broad black lines on both sides, and narrow white edges.

Internode: 1/4 length of leaves (length of internodes relates to the submerged leaves).. Emergent

Specifically, we use measures of plant and insect species roles in plant–pollinator networks (normalized degree, closeness and betweenness centrality, and c- and z-scores) recorded

In a common garden study on inva- sive Solidago canadensis in Europe, van Kluenen and Schmidt 2003 [33] found no consistent native/invasive differences among the 9 invasive