Institutional Repository UIN Sunan Kalijaga Yogyakarta: No conditions. Results ordered -Date Deposited. 2024-03-29T11:29:38ZEPrintshttp://digilib.uin-suka.ac.id/images/sitelogo.pnghttps://digilib.uin-suka.ac.id/2016-12-14T04:13:29Z2016-12-14T04:13:29Zhttp://digilib.uin-suka.ac.id/id/eprint/22872This item is in the repository with the URL: http://digilib.uin-suka.ac.id/id/eprint/228722016-12-14T04:13:29ZPENGARUH VARIASI KOMPOSISI N, P DAN K
TERHADAP LAJU PERTUMBUHAN ANGGUR LAUT
(CAULERPA RACEMOSA (FORSSKAL) J. AGARDH) PADA MEDIA
TERKONTROLSeaweed is the one of fishery commodities in Indonesia which has a role in
increasing the income of coastal communities. Caulerpa racemosa is a seaweed
of the class Chlorophyceae which have antioxidant capacity and high economic
value. However C.racemosa production is still low because they rely on nature
and experience many obstacles, such as bad weather, pests, diseases, and
predators. This research aims to determine variations in the dosage of NPK best to
obtain optimal growth C.racemosa and find out the effects of aeration combined
with using of NPK dosage variation against C.racemosa growth rate. The research
was conducted over 42 days in August until September 2015 in the Great Hall of
Brackish Water Aquaculture Development (BBPBAP) Jepara. The research was
designed using a randomized block design (RAK) to the types of control treatment
and three kinds of dosage of NPK. NPK fertilizers were given 2 grams dosage
variation 1 NPK (1:1:1), 2 dosage of NPK (3:2:1), 3 dosage of NPK (4:2:1). The
treatmen group consist of aerated and non-aerated with 5 replications. Media
maintenance is the form of sea water using a substrate of the muddy sand in
aquarium. Fertilizers used are single fertilizer Nitrogen, SP 36, and KCl.
Fertilization is done by soaking C.racemosa with 1 liter of fertilizer solution for 6
hours. The rate of growth shown by the best dosage of 1 NPK (1:1:1) without
aeration, with an average length of 351 cm ± stolon end, the number of ramuli 38
pieces, and the mean weight of 34,1 grams wet end. The lowest growth rate
generated by the same dosage of NPK using aeration with a mean length of
117,06 cm ± stolon end, the number of ramuli 11 pieces, and the mean weight of
12,18 grams wet end.NIM.11640049 ANA ISTIANA