How to Control Onion Maggots in Garlic in Winter? A Full Breakdown of Practical Methods
Thoroughly remove plant residues. Onion maggots have a strong attraction to diseased and dead plant residues, especially rotting garlic plants, so at garlic harvest the garlic residues in the field, at the field edges and along roadsides should be completely removed and destroyed, to reduce the food source for the maggots and at the same time reduce the number of insects remaining in the field. Regulate water and fertilizer and the sowing schedule to disrupt...
Thoroughly remove plant residues. Onion maggots have a strong attraction to diseased and dead plant residues, especially rotting garlic plants, so at garlic harvest the garlic residues in the field, at the field edges and along roadsides should be completely removed and destroyed, to reduce the food source for the maggots and at the same time reduce the number of insects remaining in the field.
Regulate water and fertilizer and the sowing schedule to disrupt the environment in which onion maggots develop. Organic fertilizer should be fully decomposed before application. Deep-plow the soil and harrow the topsoil to reduce the insect population. According to local conditions, sow late at the appropriate time. Keep the soil surface dry during the adult emergence and egg-laying period to reduce the number of eggs laid by adults.
Trap and kill adults. During the adult occurrence period, place 3~4 sugar-vinegar solution traps per mu (1 mu = 667 sq m) (sugar : vinegar : water : 90% trichlorfon = 1 : 1 : 3 : 0.1) to trap and kill adults.