Due to aphid parasitoids being difficult to count in the
field, the number of mummified aphids found was examined.
Mummified aphids and aphid densities on plants were
counted and recorded in each plot in five 1 m2 plots. Within
each sampling plot, thirty randomly selected wheat tillers
were used as one sampling unit. Lady beetles on all wheat
plants within the 1 m2 plots, and covering three rows of
wheat were counted in the center of each plot. Aphids was
sampled in wheat every 4-d from April 24th to June 7th.
Ladybeetles and mummified aphids were sampled every 4-
d from May 16th to June 5th.