Abstract
Soil systemic insecticides were evaluated for the control of the coffee leafminer, Leucoptera coffeela, in 1982, 1983 and 1984 at the Adjuntas Agricultural Experiment Substation. Aldicarb 10 G and carbofuran 10 G were compared with a standard (disulfoton 15 G) and an untreated check. In 1982, disulfoton 15 G at 12 g/m height and aldicarb 10 G at 20 and 30 g per tree (93.3, 75.3 and 73.6% control, respectively) gave a highly significant leafminer control as compared with the check. Carbofuran 10 G at 20 g per tree gave 68.6% control. For the second trial (1983) only aldicarb 10 G at 20 g gave significantly higher percentage control (20.9). In the third trial, disulfoton 15 G, aldicarb 10 G at 20 g and 30 g per tree were highly significant with 92.6, 87.8 and 88.7% control, respectively. Also carbofuran 10 G at 15 g per tree was significant. Yields in all treatments with aldicarb and carbofuran were superior to that with disulfoton 15 G for the 3-year experiment.