The reduction in plant height was due to shortening of
the internodes length after application. Grain yield was
reduced in all treatments. The earlier applications
reduced yields in the range of 0.34 t/ha to 2.1 t/ha
relative to the control. Yield reduction in the
case of two applications ranged from 0.92 t/ha
to 2.54 t/ha, and that from later applications was
in the range from 0.07 t/ha to 1.1 t/ha. Yield reductions
were statistically significant by CCC 2 ×
160 g a.i./ha in BBCH 18–19 yield reduction of
1.21 t/ha, ethephon 576 g a.i./ha in BBCH 18–19
yield reduction of 2.10 t/ha, mepiquat chloride +
prohexadione 344 + 63 g a.i./ha in BBCH 18–19
yield reduction of –1.24 t/ha, CCC 2 × 2160 g a.i./ha
in BBCH 18–19 and 34–36 yield reduction of –1.04 t/ha,
ethephon 2 × 576 g a.i./ha in BBCH 18–19 and 34–36
yield reduction of –2.54 t/ha, mepiquat chloride +
prohexadione 2 × 344 + 63 g a.i./ha in BBCH 18–19
and 34–36 yield reduction of –1.55 t/ha, and mepiquat
chloride + prohexadione 344 + 63 g a.i./ha in
BBCH 34–36 yield reduction of –1.10 t/ha.