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.
Galls can interfere with the plantâs ability to move water and nutrients through the stem, which may result in stunting or decline of the plant. Crown gall can infect nearly all dicotyledonous plants, and is most common in euonymus, Prunus spp., brambles, rose, willow, and grapes.rown Gall. Crown gall causes round galls to form on stems or roots, often near the soil line of the plant. Galls may vary from the size of peas to over an inch in diameter.