4. Pre Harvest
Conclusions
Sivanto at 2.5 oz was the best overall treatment,
reducing SCA 73% 4, 6 and 11 DAT. Control
would be expected to be better with higher rate or
lower SCA population.
Malathion reduced SCA population 66% 4 DAT but
only 9% 11 DAT. However, honeydew in head was
significantly reduced on all rating dates.
Glyphosate had no effect on SCA population.
Sodium chlorate reduced SCA 50% on leaves but
increased SCA in head.