Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Transition of parasitic site of Aceria tulipae on garlic foliage and efficacy of spirotetramat flowable in controlling this pest.

Abstract

The infested site of tulip rust mite (Aceria tulipae), which is an important pest of garlic, on the garlic foliage was investigated in Japan from before overwintering to the harvest season. The rust mites parasitized only the leaf blades in April from before overwintering to immediately after overwintering, but they were found in the base of the leaf blades in mid-May, and invasion into the leaf sheath was confirmed in late May in the field. After that, the inside of the leaf sheath was the main target until the harvest season. As the harvest season approached in late June, the distance from the tip of the bulb to the parasitism site became shorter, and it became clear that the harvest contained the parasitism site of rust mite. From late May to mid-June, pest control using spirotetramat, was applied twice every 2 weeks to rust mites invading the inside of the leaf sheath, which was difficult for the insecticide to reach. The effect was examined and it was shown that spraying the foliage significantly reduced the number of garlic mite infestations on garlic bulbs after harvesting and a high control effect was observed.