Method for supression of infection by plant virus

1. A method for suppressing plant virus infection transmitted by winged pests, the method comprising applying, to a crop, a composition comprising:

(a) a glycerin acetic acid fatty acid ester represented by formula (I):

CH 2 OCO(CH 2 ) 1 —CH 3

CHOCO(CH 2 ) m —CH 3

CH 2 OCO(CH 2 ) n —CH 3   (I)

wherein l is an integer of 0 to 16, m is an integer of 0 to 16, n is an integer of 0 to 16, and one or two of l, m, and n are 0; and

(b) at least one insecticidal compound selected from the group consisting of nitenpyram, dinotefuran, pyridaben, spiromesifen, buprofezin, fenpyroximate, acetamiprid, milbemectin, tolfenpyrad, flonicamid, pymetrozine, pyrifluquinazone, clothianidin, imidacloprid, thiamethoxam, sulfoxaflor, pyridalyl, cyclaniliprole, chlorantraniliprole, cyantraniliprole, fenpropathrin, fenitrothion, ethofenprox, teflubenzuron, thiacloprid, lufenuron, spirotetramat, pyriproxifen, hydroxypropyl starch, saccharified reduced starch, sodium oleate, flupyradifurone, triflumezopyrim, tetraniliprole, fluxametamide, broflanilide, spinetoram, pirimiphos-methyl, emamectin benzoate, methidathion, chinomethionate, cartap, thiocyclam, spinosad, novaluron, lepimectin, acequinocyl, fenbutatin oxide, tebufenpyrad, DBEDC, chlorfluazuron, and salts thereof.

2. The method according to claim 1 , wherein the insecticidal compound is at least one selected from the group consisting of nitenpyram, dinotefuran, pyridaben, spiromesifen, buprofezin, fenpyroximate, acetamiprid, milbemectin, tolfenpyrad, flonicamid, pymetrozine, pyrifluquinazone, and salts thereof.

3. The method according to claim 1 , wherein the winged pests are whiteflies.

4. The method according to claim 1 , wherein the winged pests are sweetpotato whiteflies (Bemisia tabaci).

5. The method according to claim 1 , wherein the crop is cherry tomato or tomato.

6. The method according to claim 1 , wherein the plant virus is tomato yellow leaf curl virus.

7. The method according to claim 1 , wherein the composition is applied to the crops before winged pests fly to the crops.

8. The method according to claim 2 , wherein the insecticidal compound is at least one selected from nitenpyram, pyridaben, buprofezin, fenpyroximate, milbemectin, and salts thereof.

9. The method according to claim 2 , wherein the insecticidal compound is pyridaben or a salt thereof.

10. The method according to claim 2 , wherein the insecticidal compound is nitenpyram or a salt thereof.

11. The method according to claim 2 , wherein the insecticidal compound is buprofezin and fenpyroximate or salt(s) thereof.

12. The method according to claim 2 , wherein the insecticidal compound is milbemectin or a salt thereof.

13. The method according to claim 2 , wherein the winged pests are whiteflies.

14. The method according to claim 2 , wherein the winged pests are sweetpotato whiteflies (Bemisia tabaci).

15. The method according to claim 2 , wherein the crop is cherry tomato or tomato.

16. The method according to claim 2 , wherein the plant virus is tomato yellow leaf curl virus.