| Summary: | The experiment was made under laboratory
conditions with the aim to evaluate the effect of sulphuric acid,
boiling water and temperature on speed and percentage of
emergence in Pithecellobium dulce (guamuchil), Leucaena
leucocephala (guaje), and Sesbania spp (sesbania).
Evaluated treatments were: immersion in suphuric acid
(90 %), during 15, 30 and 45 minutes; immersion in boiling
water; heating stove (70 ºC) and control. In guamuchil, the
best percentage of emergence was obtained with sulphuric
acid, immersion of 45 and 30 minutes. In guaje, the best
percentage of emergence was provoked with immersion
in sulphuric acid during 15 minutes. In sesbania, all
three treatments of sulphuric acid were statistically equal
amongst themselves and different from control. Treatment
of immersion under boiling water during five minutes was
prejudicial since there was no emergence. Finally, the
heating of the seed in stove (70 °C) had no influence in the
percentage of emergence of the seeds. Treatments with
sulphuric acid obtained the highest velocity of emergence
in the three evaluated species.
|
|---|
