Reutilization of açaí residues as substrate for emergence and initial development of Schizolobium parahyba var. amazonicum

Abstract

The use organic waste to produce seedlings is recommended to reduce environmental impacts The purpose of this study was to evaluate the seed emergence and the initial development of Schizolobium parahyba var. amazonicum subjected to substrate with different percentages of “açaí” stone and shading levels. The seeds were subjected to dormancy break and sown in a substrate composed of “açaí” stone with 0, 15, 30 and 45% and the seedlings remained in two levels of shading (30 and 70%) and in full sun. Substrates with  15% “açaí” stone showed higher values with 7.0 cm in height, and 2.24 cm in diameter. Whereas greater emergence (67%), height (6.97 cm) and diameter (1.96 cm) were observed in 70% shading. Thus, it is concluded that the substrate with 15% of “açaí” stone and 70% shading are conditions indicated for the emergence and initial development in the seedlings of S. parahyba var. amazonicum.