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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan" : 3 Documents clear
THE CHARACTERISTICS OF SOILS AMENDED WITH DRANCO LIQUOR R, Dr Ir; MSc, Sudradjat
Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16311.608 KB) | DOI: 10.20886/jphh.1992.10.2.37 - 47

Abstract

Jenis  tanah  yang   digunakan  dalam   penelitian  ini  adalah  Huldenberg   (Light  loamy).   De  Klinge   (Sandy)   dan Bonheiden   (Sandy),  sedang  larutan Dranco  berosal  dari  proses   fermentasi   anaerobik  dengan  substrat  sampah  kota. Tujuan  penelitian  ini adalah untuk   mengetahui  karak teristik  tanah  yang ditambahkan larutan Dranco,  terutama  tentang kemampuan  larutan  Dranco  dalam  mensmbilkan  agregat tanah  serta  menekan   intensitas.  erosi.  Selain itu  diamati pula pengaruh  penambahan   larutan Dranco  terhadap pertumbuhan tanaman  serta daya survival  tanaman  tersebut   dalam kondisi lingkungan  yang  kekeringan.Hasil  penelitian  menunjukkan  penambahan   iarutan  Dranco  menyebabkan peningkatan “saturated  hydraulic  con­ ductivity"  dua kali, penurunan  “capillary  rise”  dan  "horizontal   infiltrotion yang  menunjukkan indikasi  agregat  tanah yang  lebih  stabil  terhadap  penghancuran  oleh.air.  Selain  itu juga  diperlihatkan  bahwa gerakan  air diperlambat  sehingga tanah akan menyimpan air lebih lama.Pengaruh  larutan  Dranco  yang  sangat besar adalah  terhadap  stabilisasi  agregat tanah.  Untuk   tanah  "light loamy" stabilitasnya  ditingkatkan  sampai  3 kali,  untuk  "sandy” (clay  6%) sampai  10  kali dan  “sandy” (clay  3%)  sampai 40 kali. Selain itu, larutan Dranco   menurunkan  intensitas  erosi,  mempercepat   pertumbuhan  tanaman  serta memperpanjang  daya  tahan tanaman dalam kekeringan.
PENGAWETAN TIGA JENIS KAYU UNTUK BARANG KERAJINAN MEMAKAI DUA JENIS BAHAN PENGAWET BOR SECARA RENDAMAN DINGIN Abdurrohim, Sasa
Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8570.464 KB) | DOI: 10.20886/jphh.1992.10.2.54 -58

Abstract

Three  Wood species,  i.e.  tusam  (Pinus  merkusii  Junh.  et De Vr.), karet  (Hevea brasiliensis Muell. Arg.) and jeungjing paraserianthes falcataria (L.)  Nielsen)   were  treated  with  two  bor preservatives  using cold soaking   method.  The  two preservatives  used  were  borax at  5  %  level  and  the  mixture  of  borax  and  boric acid  at  10  %  level.   The soaking periods  were  1,  3,  5 and 7 days. Forty  samples  of  the  size 5  x 5  x 50  cm  were  used for  each species  and  each treatment  in  thisn experiment.   The avemge moisture  content of the samples for each species  were 29 .9 %, 31. 9%  and 30.3% respectively.The results  showed   that  two species,  i.e. tusam  and karet  achieved  the  minimum standard on preservative  retention and pentatiue.   The  required  minimum retention for  borex  preservative  is 8. 7 kg/m3, whereas  for  the mixture of borax  and boric acid is 8.4 kg/m3.  The required  minimum penetration for both preservatives is 10 mm.The .study  recommended   that  tusam  should be treated in 5 days  using borax preservative  or  1  day  using the  mixture of   borax  and  boric,  both  with  cold  soaking  method.  The  treatment for  karet  was  recommended   to use the  mixture of borax  and  boric  acid  within 3 days.
PERBAIKAN SISTEM PEMUNGUTAN LAK DALAM RANGKA PENINGKATAN PRODUKSI Sumantri, Ishak
Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14075.141 KB) | DOI: 10.20886/jphh.1992.10.2.63 ~ 68

Abstract

 A  research   on   the  improvement    of  lac harvesting  system   had  been  conducted  in Probolinggo   Forest Districts. Unit  II Perum  Perhutani,   East  Java.  Harvesting  system  and plantation site  were observed  to  find   higher  lac production.The result are as follows  :  -- The  selective  system is  better  than  total  cut  system   in producing lac.--The plantation on  top  of  the  hill produce   more  lac than  other  places  due  to  the  richness  of sun  shine.

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