Pests Burning of infested leaves and spraying of chemicals such as Malathion, and the like are among the recommended control Mites, Aceria The pest is either seed-borne or For piece treatment of seeds, tulipae mulch-borne. The affected apply chemicals plants become twisted and recommended for the control distorted with yellowish or of mites. pale-green streaks on the For field infestation, apply leaves. The leaf blade may not the recommended chemicals emerge readily from the cloves as early as the sign of and the leaves separate poorly infestation appears and after emergence. The damage is repeat at seven to 10 days called “tangle top.” interval until the pest is controlled. Bulb Mites, Bulb mites damage bulbs by Rapid rotation, from one Rhizoglyphus spp., penetrating the outer layer of crop to the next, fosters Tyrophagus spp. tissue and allowing rotting survival of mites on the organisms to gain entry. This leftover vegetation in the soil pest is most damaging when from the previous crop. plant growth is slowed by cool, Fallow fields to allow wet weather. Bulb mites can complete decomposition of reduce plant stands, stunt plant organic matter; this reduces growth, and promote rot of field populations of the mite. bulbs in storage. On seeded Avoid planting successive onions, they can cut off the onion or garlic crops. Flood radicle before the plant irrigation or heavy rains becomes established. during the winter may reduce mite levels in the soil. Garlic growers must insist on clean seed cloves. Hot water treatment of seed garlic before planting may reduce mite infestation. Treatments are generally preventative and should be considered for fields that are high in vegetative matter or that have had previous bulb mite problems. No treatment thresholds exist.
Pests Burning of infested leaves and spraying of chemicals such as Malathion, and the like are among the recommended control Mites, Aceria tulipae The pest is either seed-borne or mulch-borne. The affected plants become twisted and distorted with yellowish or pale-green streaks on the leaves. The leaf blade may not emerge readily from the cloves and the leaves separate poorly after emergence. The damage is called “tangle top.” For piece treatment of seeds, apply chemicals recommended for the control of mites. For field infestation, apply the recommended chemicals as early as the sign of infestation appears and repeat at seven to 10 days interval until the pest is controlled. Bulb Mites, Rhizoglyphus spp., Tyrophagus spp. Bulb mites damage bulbs by penetrating the outer layer of tissue and allowing rotting organisms to gain entry. This pest is most damaging when plant growth is slowed by cool, wet weather. Bulb mites can reduce plant stands, stunt plant growth, and promote rot of bulbs in storage. On seeded onions, they can cut off the radicle before the plant becomes established. Rapid rotation, from one crop to the next, fosters survival of mites on the leftover vegetation in the soil from the previous crop. Fallow fields to allow complete decomposition of organic matter; this reduces field populations of the mite. Avoid planting successive onion or garlic crops. Flood irrigation or heavy rains during the winter may reduce mite levels in the soil. Garlic growers must insist on clean seed cloves. Hot water treatment of seed garlic before planting may reduce mite infestation. Treatments are generally preventative and should be considered for fields that are high in vegetative matter or that have had previous bulb mite problems. No treatment thresholds exist.