karijo karjo wrote: > > Bapak-bapak & Ibu-ibu saya mau tanya soal allelopath nich. Dulu sewaktu > masih sekolah di Pertanian > saya pernah belajar soal allelopath. Yaitu cara suatu jenis tanaman menekan > populasi jenis tanaman lain dengan zat kimia. > > Nah, sekarang yang mau saya tanyakan, apakah pada tanaman air (yang dipakai > untuk aquascapping) > juga ada peristiwa seperti ini? Kalau ada, jenis tanaman apa yang sering > mengeluarkan zat allelopati? > Kemudian, jenis tanaman apa yang bisa dicampur dengan tanaman seperti itu?
Dari yang saya baca, jawabannya 'ada'. Bahkan ada yang sampai menimbulkan stress pada ikan tertentu. Untuk jelasnya dapat dilihat pada: Walstad, D.L. 2003. Ecology of the Planted Aquarium: A Practical Manual and Scientific Treatise for the Home Aquarist, Second Edition. Echinodorus Publishing. Di Internet juga bisa dibaca: http://www.skepticalaquarist.com/docs/algae/tonealg.shtml "Algal succession and allelochemicals. Many species of algae produce allelochemicals, which suppress the growth of other algae. Investigators found that allelopathic chemicals released by the filamentous alga Pithophora tended to suppress other algae, especially the single-celled pelagic algae responsible for "green water." In Ecology of the Planted Aquarium, Diana Walstad reported a 1969 study, in which aquaria with 24-hour lighting turned green in a week, but not identical tanks containing active Pithophora. Though the toxins of a successful alga may help suppress its competitors, directly or indirectly they may also be encouraging the species that will take that alga's place. Dying algae can release phytotoxins, an effect recognized in drinking water by unappealing tastes produced by otherwise acceptable algae after chlorination. This is a minor problem in water treatment systems, but it can be a major problem in the narrow confines of an aquarium. After you've done some successful algae killing, water changes are in order." Nanti saya coba lihat di rumah dan post di sini kalo ada keterangan tambahan, insya Allah. BTW, ini buku cocok bagi yang ingin aquascaping secara alami (dan murah) atau yang ingin memahami sedikit kejadian dalam aquarium secara ilmiah. Untuk contoh hasilnya dapat dilihat pada: http://www.aquabotanic.com/diana_walstad_gallery.htm http://mike-edwardes.members.beeb.net/plant/lotech.html Semoga bermanfaat. -- Ahmad Ridha ibn Zainal Arifin ibn Muhammad Hamim (l. 1400 H/1980 M) ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/_kiolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/ikan_hias/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
