PENGARUH KONSENTRASI GA-3, LAMA PERENDAMAN DAN VARIETAS TERHADAP PERTUMBUHAN BIBIT JAMBU METE (Anacardium occidentale L)

Abstract

The objective this study was to know the effect  factor interaction of GA-3 concentration, submersion duration and variety on Anacardium  occidentale growth seeding. The experiment was carried out from September 2010 until December 2016 in Wonogiri. With the altitude was a baut 359 metres above sea level.The design used was randomized, consist of three factors and three replication. The first factor was GA-3 consentration consist of 0, 100, 200 and 1000 ppm, the second factor was submersion duration consist 0f 24, 48 and 72 hours and the third factor was variety consist of local Wonogiri and Sri Lanka. The results of the experiment showed that : 1) Submersion duration effect on variety local Wonogiri that seed germinating 100% than variety Sri Lanka that seed gerimnating 80% only; 2) Increasing of GA-3 concentration until 1000 ppm could increase leaf length, leaf width, height plant, circle stem, leaf number, fresh weight seedling, dry weight seedling 6 and 12 week after plant but decreasion of root number, root lenght and relative growth rate; 3) Increasing of submersion duration until 72 hour could increase height plant, fresh weight seedling and dry weight seedling 12 week after plant but decreasion of relative growth rate; 4) No effect interaction between treatment on all variable; 5) GA-3 concentration 1000 ppm, submersion duration 72 hour and variety local Wonogiri that effect good on Anacardium occidentale growty seedling; 6) GA-3 concentration optimum 910 ppm gave height plant maximum 32,99 cm and submersion duration optimum 72 hours gave height plant maximum 29,16 cm; 7) GA-3 concentration optimum 793,75 ppm gave leaf number maximum 22,96.