THE need for economy in the use of pyrethrum extracts in insecticidal practice makes necessary the continuous search for substitute toxic agents or at least for activator substances which may be ...

The weevils have evolved to only feed on the invasive floating pennywort South American weevils have been introduced to waterways in West Yorkshire in an effort to control the invasive floating ...

The weevils damage a plant's pseudobulb, which can stunt the plant's growth and sometimes kill it. After having to destroy many plants in its collection and keep others in quarantine, the gardens ...