SOUSA, K. L.; http://lattes.cnpq.br/4363860208519056; SOUSA, Kydyaveline Lacerda de.
Abstract:
The pinhão-manso (Jatrophacurcas L.) is an oilseed plant that has high potential for biofuel
production, however, little is known about the cultivation techniques of this species,
especially in regards to the production of quality seedlings which provides high survival rates
in field. This study aimed to evaluate the performance of saplings of pinhão-manso grown on
substrates with different textures in a greenhouse. The effects of five compositions of
substrates (treatments) were evaluated: 100% river sand; clay soil 100%; 50% river sand +
50% clay soil; 75% river sand + 25 % clay soil material; 25% river sand + 75% clay soil. The
treatments were arranged completely at random, with five repetitions. We measured the
height, stem diameter, leaf area, leaf number and dry weight of shoots and roots. The results
of this study show that saplings of pinhão-manso respond differently to variation in soil
texture, in general, important parameters such as stem diameter and shoot dry weight showed
some sensitivity to the substrate with more clay. Considering positive effect for most
parameters, the substrate material composed of 75% clay soil + 25% river sand was the one
that provided seedlings of pinhão-manso with better quality.
