A conventional randomized plot design was used, with
treatment plots (10 m×8 m) randomly repeated in each of
four plots. The following treatments were compared: (i) WGI,
wheat-garlic intercropping by planting row in 8:3 ratio (eight
rows of wheat with three rows of garlic); (ii) GOB, the release
of garlic oil blend in wheat field; (iii) DD, the release of diallyl
disulfide in wheat field; (iv) CK, control, wheat monoculture
without garlic plant intercrop nor semiochemical releaser
use in the fields. A 2-m wide area was set around the each
plot to decrease potential border effects on insect dispersion.
No pesticides were applied on the fields during the entire
growth stage of wheat and garlic.