Behavior of adult of the potato tuber moth (Scrobipalpopsis solanivora) on potatoes [Solanum tuberosum] and chemical control in Guatemala
1994
Inoue, H. (Japan International Cooperation Agency, Tokyo) | Leal, H. | Gonzalez, M. | Estrado, R.
Experiments were carried out in a greenhouse at ICTA-Chimaltenango and in a farmer's potato field at Quetzaltenango, Guatemala to develop a method of control of the insect. The insect oviposits eggs mainly on the soil surface the pots with potatoes. In the present experiment, it was observed that the insect adults did not require stems and leaves of potato to oviposit eggs on the soil surface in contrast to a previous assumption based on the prolonged longevity of the insect adults. In a greenhouse, several insecticides were sprayed on stems and leaves of potato in a flower pot, and then the insect adults were inoculated. It was assumed that the insects were affected by the application of two insecticides, syfrutrin and methyl parathion, since the longevity of the insect adults inoculated on potatoes became short and the damage of potato tubers caused by hatched larvae from eggs was remarkably reduced. Five applications at about one week interval of a pyrethroid insecticide, 0.05% syfrutrin solution to potatoes, reduced remarkably the damage of potato tubers caused by the insect
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