Lantern' treatments. Quadris alternated with Bravo+Nova, significantly increased marketable yield on
'Jackpot' under both spray schedules compared to the untreated 'Jackpot' treatment. All treatments on
'Jackpot' and 'Magic Lantern' significantly increased the number of sound handles over the untreated
'Jackpot'. The untreated 'Magic Lantern' had a significantly larger percentage of sound handles than
the untreated 'Jackpot'. None of the treatments on 'Magic Lantern' significantly increased sound
handles over the untreated 'Magic Lantern' treatment. Quadris alternated with Bravo+Nova on the IPM
schedule was more effective in producing sound handles than Champ+Maneb on the IPM schedule on
'Jackpot'. Combining disease tolerance with powdery mildew scouting for IPM spray initiation
resulted in the fewest fungicide applications with out marketable yield or quality loss

untreated (JP)8.3 e⁴54.3 a⁴46.7 a⁴

untreated (ML)6.3 de126.1 d91.4 bc

Champ 2F-2pt+Maneb 75DF-1.5 lb (JP)( IPM)6.3 de86.1 abc79.0 b

Champ 2F-2pt+Maneb 75DF-1.5 lb (JP)(Conv.)5.5 cd81.2 ab87.1 bc

Quadris 2F-11 oz; Bravo-3pt+Nova-2.5 oz ( JP)(Conv.)⁵4.5 bcd111.2 bcd90.3 bc

Quadris 2F-11 oz; Bravo-3pt+Nova-2.5 oz ( JP)(IPM)⁵4.0 abc114.1 bcd93.6 c

Champ 2F-2pt+Maneb 75DF-1.5 lb (ML)(IPM)3.5 abc118.0 cd97.9 c

Champ 2F-2pt+Bravo-3pt (ML)(IPM)3.0 ab136.1 d100 c

Quadris 2F-11 oz; Bravo-3pt+Nova-2.5 oz (ML) (IPM)⁵2.3 a121.5 d100 c



1 _{Variety:JP='Jackpot', ML='Magic Lantern'; Schedule:IPM=applications initated when 1 powdery mildewlesion}

detected in 50 older leaves, Conv.=convential spray program, initated when vines begin to run and repeated every 7-10

days.

2_{Rated for defoliation as result of infection from powdery mildew on a scale of 1-10 (none-severe)}

3 _{Percentage good fruit stems ("handles") by weight}

4_{means separation by Fisher's LSD, 5%}

5_{First fungicide listed applied every 14-20 days;second fungicide applied alternate 14-20 days}

1999 North Jersey Tree Fruit Annual Report

71