%0 Journal Article
%T PEMANFAATAN TEKNIK IRRADIASI SINAR GAMMA UNTUK  MENINGKATKAN VIABILITAS BENIH SENGON
%A Yulianti Bramasto
%A Putri P.K
%A Zanzibar
%A M. Danu
%J Jurnal Hutan Tropis
%P 14-20
%@ 2337-7992
%D 2016
%R -
%X Sengon (Albizia falcataria ) is the most potential species that develop in community forest with agroforestry system. The problem of  sengon plantation was the attack of pest and diseases, that influence the decrease of productivity of  sengon. To increase the  productivity of sengon  can be start  from the seed for example through  increase the  viability and vigor of seed. In seed crops, technique irradiation of  gamma rays have been used as seed treatment to increase vigor and quality of  seeds, but on forest seeds is still limited information. The purpose of this research is to analyze the effectiveness of the  irradiation of  gamma rays to increase viability of sengon  seed. The research design was  factorials in randomized completely design , which  consist of 2 factors, first factor was the origin of seeds and second  factor was the dosage of radiation.  The results show that the origin of seed and dosage of gamma rays gave a significant responses to germination percentage(DB) and speed of germination (KCT). In general the irradiation of gamma rays can increase the germination percentage (DB) and speed of germination (KCT).. The increasing of DB and KCT start at  dosage  5 Gy, and continue increase until  90 Gy. The viability of seed  raise from  13.5 % -  50,9 % from control. The  technique of gamma rays irradiation in low dosage can be used to increase viability and vigor  of sengon seed.
%K Albizia falcataria
%K germination percentage
%K irradiasi
%K speed of germination
%U http://ppjp.unlam.ac.id/journal/index.php/jht/article/view/2877/2503