Peningkatan Keefektifan Fosfat Alam Ayamaru Papua Pada Bibit Kakao Melalui Pemberian Asam Humat
| Main Author: | Suparno, Antonius |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Universitas Papua
, 2018
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| Online Access: |
http://jurnal.unipa.ac.id/index.php/agrotek/article/view/186 http://jurnal.unipa.ac.id/index.php/agrotek/article/view/186/708 |
Daftar Isi:
- The aim of this study was to find the dosage of humic acid for improving the beneficial effect of APR in cacao seedlings. The two factors-factorial experiment was set up in a Completely Randomized Design. The first factor was five levels of APR dosage: 0, 0.5, 1.0, 1.5, 2.0 g P2O5/seedling, and 2.0 g P2O5 SP36/seedling used as a comparison. The second factor was four levels of humic acid dosage consisting of 0, 1.10-3, 2.10-3, and 3.10-3 mL/seedling. F1 UAH cacao seeds from Coffee and Cacao Research Center in Jember, East Java were grown on Ultisol, acid soil from Jasinga in 20 cm x 30 cm polybag sized. The seedlings were grown under 60% of shading net for four months. Increasing humic acid dosage increased P available of the media as well as cacao seedlings growing. With humic acid dosage of 3.10-3 mL/seedling, increasing of APR dosage up to 2.0 g P2O5/seedling resulted in a linear increase of P available concentration as much as 117% and shoot dry-weight 49.02%, while in the APR dosage of 2.0 g P2O5/seedling, increasing of humic acid dosage up to 3.10-3 mL/seedling increased P available concentration for about 44.15% and 62.12% shoot dry-weight. The APR dosage of 2.0 g P2O5/seedling as compare to the control, each humic acid dosage i.e 1.10-3, 2.10-3, and 3.10-3 mL/seedling, gave P available 7.82%, 29.75%, and 40.81% respectively; shoot dry-weight 39.13%, 45.27% and 70.08%, respectively.