Koutroubas
et al. (2004) in sunflower. Baylis and Dickst
(1983) reported that a mixture of mepiquat chloride
and ethephon shortened the stalk of sunflowers very
well and in contrast to the action of daminozide,
which had exhibited uneven effects. The timing of
growth regulator application is considered to be very
important, because it can affect yield. Langan and
Oplinger (1987) noted that ethephon had highly
significant effects on grain yield, plant height, ear
height, and brace root development in maize. Yield
was generally decreasing with increasing ethephon
rate. Increasing the ethephon rate also decreased
plant and ear height