CUTTINGS OF PARIPAROBA-DO RIO GRANDE DO SUL USING INDOL BUTIRIC ACID IN TWO SUBSTRATES

Abstract

This work was made to study the effect two different substrate (sand and vermiculite) and four concentration (0, 500, 1000 and 1500 mg L^-1) indol butyric acid IBA on the cutting of “Pariparoba-do-Rio Grande do Sul” [Piper mikanianum (KUNTH) Steud var. Mikanianum (Piperaceae)]. The experiments were basal, randomly distributed in 15 repetitions of 30 cutting for treatment. It was detected for AIB was affected survival rate independ to used substrate, sand or vermiculite. The results suggest that cutting cultivated in sand substrate are capable to form bigger number of roots with lesser concentration of AIB due to bigger aeration, in detriment of those composed by in corporate substrate for vermiculite. Because there was water retention and excellent air space in the maintenances of adequate water supplement for the rooting of cuttings.