Humans have co-existed with leeches for so long, according to Siddall, that just about every language has a word for leech. 3. theyâve made a comeback in medicine.
The lettuce aphid is a problem worldwide and has recently become problematic in the western United States and Canada (Liu and McCreight 2006; McCreight 2008). However, the first three species of aphids listed above are most economically damaging in Florida (Nuessly and Webb 2010). Although heavy aphid pressure can stunt plants, the major problem aphids cause is head contamination, which makes lettuce unmarketable.
Shares & Saves. Save. Aphids can cause a lot of damage. So if you spot them on your plants, itâs best to kill them right away. These tiny pests can be killed in several ways; choose the method that works best for your situation. Concoct a simple homemade solution or apply a commercial product to handle the problem.elease Aphid Predators. Many insects eat aphids, and releasing these natural enemies of aphids into your yard or garden will help to kill aphids. Lacewings and lady bugs, or lady beetles, are among the insects that kill aphids.