TY - JOUR T1 - Systemic Activity of Neem Extract Against the Birch Leafminer JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 12 LP - 16 DO - 10.48044/jauf.1990.004 VL - 16 IS - 1 AU - Daniel F. Marion AU - Hiram G. Larew AU - J.J. Knodel AU - W. Natoli Y1 - 1990/01/01 UR - http://auf.isa-arbor.com/content/16/1/12.abstract N2 - Pressurized micro-injection of neem seed extract into trunks of Betula papyrifera was evaluated for control of the birch leafminer, Fenusa pusilla (Lepeletier). Concentrations of 1.5 and 3.0% caused a significant decrease in foliar damage by birch leafminer when injected with the Mauget® microinjection system. Neem was as effective in reducing the number of adult leafminers reared from foliage of treated plants as Injecticide B® (bidrin) or Meta-Systox-R® . Phytotoxicity was not observed in any treatments. Micro-injections of neem may be an effective application technique as an integral part of IPM programs for controlling insect pests of trees. ER -