Lower back tightness can cause muscle twitching, pain and reduced range of motion. Photo Credit Dirima/iStock/Getty Images. Lower back muscle tightness is the cause of a muscle spasm. This can be brought on by a strain, overuse or muscle weakness, according to BetterMedicine.com. If your lower back muscles lack strength, and a stronger back muscle pulls on this weak muscle, it can create tightness or pain. While lower back tightness can be managed at home, occasionally medical intervention is needed to treat this common condition. Rest your lower back muscles.
Wasp and Scale Insects Help Control Giant Reed. An arundo gall wasp deposits eggs into the main stem of a giant reed. (Image by USDA/ARS) The release of tiny insects to combat the invasive weed giant reed is paying off, according to a recent U.S. Department of Agriculture (USDA) study.
It can be caused by mechanical injury or by several species of insects, mites, nematodes, fungi and bacteria. In fact, there are more than 2,000 species of gall-making insects in the United States. The association between the gall-making organism and the host plant is usually quite specific.Different organisms produce galls of characteristic size, shape and color.ackberry trees host several species of gall psyllids. They form 1/8- to 1/4-inch galls on the leaves and petioles. The insects overwinter as adults in bark crevices and other sheltered locations (including home siding and window frames). After mating in the spring, the females lay eggs on the undersides of leaves.