Two trials on scab control on Richared Delicious apple trees in the VII Region of Chile, are reported. Fungicides were: CGA 71818 PM (Topas) CGA 64251 PM (Vangard), Baycor 500 SC plus Bayleton PM, and Bravo 500 F; their effectiveness is given in four tables. Topas and Vangard controlled scab when applied under both “calendar” or “climatic conditions” systems, while the check trees presented 1000/o infectionon leaves and fruits. Daily levels of primary inocolum of Venturia inaequalis (Cke.) Wint. were measured, wiih a Burkard trap, from September to November. Their occurrence and rete of release/hour are given in two figures. |