What are the control methods for the ginger eye gnat?

It is a major pest during ginger storage. The larvae are commonly known as ginger maggots and can also damage seed ginger in the field, affecting both the yield and quality of ginger. This insect is moisture-seeking and cryptic; newly hatched larvae bore under the ginger skin to feed. Those feeding at the "rounded head" of the ginger bind together frass with silk webbing, cover it with debris, and hide inside. The larvae are active, their bodies constantly wriggling and their heads swaying as they spin silk webbing. At the damaged parts of the ginger, only the epidermis, coarse fibers and granular frass remain, and the ginger may also rot.

Control methods: Before the ginger is put into the cellar, thoroughly clean the ginger cellar and spray it with a 1000-fold dilution of 80% dichlorvos. Alternatively, when placing the ginger, put several small open bottles containing undiluted dichlorvos in the ginger pile, or after the ginger is placed, heat undiluted dichlorvos for fumigation. In the field, carefully select seed ginger, discard infested seed ginger, and before sowing soak the seed ginger in a 1000-fold dilution of 80% dichlorvos for 5 to 10 minutes to kill the pests inside the ginger.