Abstract
We estimated density, proportion of allurement and efficiency of control in the Valencia slug, Lehmannia valentiana (Férussac) by using meta-aldehyde traps. The removal method elucidated the slug density and proportion of allurement in a citrus field to be 25.6/m2; and 38%, respectively. The slug density was larger in order, under tree > on dense grassland > on sparse grassland > bare ground, and the proportion of allurement was larger in order vice versa. Treatment of meta-aldehyde granule of 1g/m2; caused 67.5-100% of slug death, and larger slug density showed lower control efficiency.
