Phytosanitary composition

1. A method for controlling insects of the Aphidoidea and Phylloxeroidea superfamily comprising applying to said insects or plants a compound having formula (I)

wherein,

x 1 and x 2 are each independently=0 or 1;

—R 1 — represents a group chosen from

R 2 — represents a group chosen from

wherein for —R 1 — and —R 2 —:

—X— represents O or N,

a=0, 1, or 2

b=1, 2 or 3;

-A- represents a mono-saccharide, a di-saccharide or a group chosen from:

wherein

y and z are each independently equal to 0, 1, 2, 3 or 4

R 3 and R 4 each represent independently H or a C 1 -C 3 alkyl

R 5 and R 6 each represent independently H, OH or the group

where —R 1 — chosen between

and —R 2 — chosen between

or

n 1 , n 2 , n 3 are each independently equal to 1, 2, 3, or 4 and n 4 =0 or 1

c=2, 3 or 4.

2. The method according to claim 1 , wherein said compound having formula (I),

—R 1 — represents a group chosen from:

wherein —X— represents O and a=1 or 2, and

—R 2 — represents a group chosen from:

wherein —X— represents O and a=1 or 2;

-A- represents the group

wherein y and z are each equal to 0 or 1, and R 3 , R 4 , R 5 and R 6 are each H.

3. The method according to claim 2 , wherein said compound having formula (I) is chicoric acid.

4. The method according to claim 3 , wherein the compound having formula (I) is chicoric acid and is formulated in a phytosanitary composition at a concentration greater than or equal to 0.06 mM.

5. The method according to claim 3 , wherein the chicoric acid is at a concentration greater than 0.125 mM.

6. The method according to claim 1 , wherein said compound having formula (I),

—R 1 — represents a group chosen from

wherein —X— represents N and a=1 or 2; and

—R 2 — represents a group chosen from

wherein —X— represents N and a=1 or 2; and

A represents the group —(CH 2 ) n1 —NH—(CH 2 ) n2 —[NH—(CH 2 ) n3 ] n4 —, wherein n 1 , n 2 , n 3 are each independently equal to 1, 2, 3, or 4 and n 4 =0 or 1.

7. The method according to claim 1 , wherein the compound having formula (I) is associated with at least one second substance having a phytosanitary activity and/or a nutrient substance.

8. The method according to claim 1 , wherein the insects belonging to the Aphidoidea and Phylloxeroidea superfamily are chosen from the Aphididae and Phylloxeridae families.

9. The method according to claim 8 , wherein the insects are selected from the group consisting of: Myzus persicae (green peach aphid), Myzus varians (peach-clematis aphid), Myzus cerasi (black cherry aphid), Brachycaudus persicae (black peach aphid), Aphis pomi (green apple aphid), Brachycaudus helichrysi (leaf-curling plum aphid), Hyalopterus pruni (mealy plum aphid), Dysaphis plantaginea (rosy apple aphid), Dysaphis pyri , (pear bedstraw aphid), Aphisgossypii (cotton and melon aphid), Acyrthosiphon pisum (pea aphid), Macrosiphum euphorbiae (pink and green potato aphid), Aphis spiraecola ( A. citricola ) (green citrus aphid), Aphis fabae (black bean aphid), Rhopalosiphum maidis (corn aphid), Rhopalosiphum padi (bird cherry-oat aphid), Sitobionavenae (English grain aphid), Diuraphis noxia (Russian wheat aphid), Brevicoryne brassicae (cabbage aphid), Eriosoma lanigerum (woolly apple aphid), Nasonovia ribisnigri (lettuce aphid), Amphorophora idaei (large raspberry aphid), Toxoptera aurantii (black citrus aphid and coffee aphid), Elatobium abietinum (green spruce aphid) and Pemphigus bursarius (lettuce aphid), and Daktulosphairavitifoliae (grapevine phylloxera ).

10. The method according to claim 9 , wherein the aphid is from the group consisting of Myzus persicae (green peach aphid), Acyrthosiphon pisum (pea aphid), Aphis gossypii (cotton and melon aphid), Macrosiphum euphorbiae (pink and green potato aphid) and Sitobion avenae (English grain aphid).

11. A phytosanitary composition comprising chicoric acid in a concentration ranging from 0.06 to 5 mM, at least one further active substance having a phytosanitary activity, and at least one excipient suitable for phytosanitary use.

12. A phytosanitary treatment method, comprising a step consisting of applying at least one compound having formula (I) or a composition containing same, on aphids, or on a site infested with aphids or on a site liable to be infested by aphids.