PENGARUH MIKORIZA, MEDIA TANAM DAN FASE TRANSPLANT TERHADAP PERTUMBUHAN BIBIT JELUTUNG (Dyera costulata (Miq.) Hook.f)

Abstract

Dyera costulata, usually called as jelutung is belonging into Apocynaceae family.
This plant is a potential plant species that has good prospect, especially for timber
and latex production. However the seedling grows slowly. The experiment was
carried out in greenhouse, Treub Laboratory, Botani Division, Centre Research for
Biology-LIPI, Bogor, using a Factorial Completely Randomized Design with tree
main factors in five replications. The first factor is phase of transplant i.e. seedling
with closed cotyledon, seedling with opened cotyledon, seedling with two first
leaves. The second factor is growth medias i.e. soil, soil+compost (1:1), soil+husk
of rice (1:1), soil+compost+ soil+husk of rice (1:1:1), compost+ soil+husk of rice
(1:1). The third factor is mycorrhiza i.e. 0, 2, 4 and 6 g/pot The result showed that
the transplant phase had significant effect on the seedling growth. The best of
transplant phase is seedling with two leaves which has 100% survival, seedling
height 8.57 cm and number of leaves 5.07 . Mycorrhiza treatment no significant
effect on the seedling growth until 5 months after planting. Growth medias had
significant effect at number of leaves. Therefore it is recommended the best media
for seedling growth are are of soil+ soil+husk of rice (1:1) , or soil+compost + husk
of rice = 1:1:1. There was no interaction effect of transplant phase, mycorrhiza
and growth media.