Detailed Explanation of Garlic Pest Species and Control Methods

In garlic production in Dali City, two main types of insect pests occur, namely the South American leafminer (Liriomyza huidobrensis) and the leek moth (Acrolepiopsis sapporensis). The South American leafminer mainly causes damage in the early stage of garlic growth (when there are 3--6 leaves); the leek moth causes damage throughout the entire growth period of garlic, with more severe damage in the middle and late stages. For control, the South American leafminer can be treated when garlic has 3--4 leaves, according to the situation, by selecting avermectin-type 1.8% Haijimie emulsifiable concentrate at l0--15 milliliters per mu, 1.8% Aifuding emulsifiable concentrate and Chongmanguang emulsifiable concentrate at 20--30 milliliters per mu and other pesticides for control. Apply once every 10 days, with 2 consecutive applications, to effectively control the damage of the leafminer, with an average control efficacy of 90%EX2; for the control of the leek moth, when the larval count reaches more than 20 per 100 plants, use 40% dimethoate emulsifiable concentrate at 100 milliliters per mu, 30% phoxim emulsifiable concentrate at 80 milliliters per mu, or pyrethroid pesticides for control, applying once every 7 days, with 2-3 consecutive applications, to control the damage of this insect to garlic. In addition, other pests occurring on garlic in our prefecture include thrips, aphids and various other pests. Because their damage to garlic is relatively light, when controlling the main pests, these pests are also controlled incidentally, so generally no separate control is needed.