Study on Growth Rate and Seaweed Eucheuma spinosum And Euchema cottoni in Waters of Kutuh Village, South Kuta Sub-District, District of Badung-Bali.
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Journal of Environment, 1, (2014), 36–42
Original Paper
Study on Growth Rate and Seaweed Eucheuma spinosum
And Euchema cottoni in Waters of Kutuh Village, South
Kuta Sub-District, District of Badung-Bali
Dwi Budi Wiyanto *
a
Study Program of Marine Sciences, Faculty of Fisheries and Marine Sciences, Udayana University, Bali Indonesia
* Corresponding author: Dwi Budi Wiyanto; E-Mail: [email protected]
Tel.: +62 361 702802
Received: 29 May 2014 / Accepted: 9 November 2014 / Published: 13 November 2013
Abstract: Seaweed is a non-fish fishery commodity. The market demand for seaweed, both
from the domestic and foreign markets has a bright future as a trade commodity on the
international market. Bali is one of the islands of seaweed producers in Indonesia. Seaweed
production in Bali in 2008, decreased to 15.2% compared to that in 2007. The purpose of
this study was to determine how big the difference between the growth rate of E. cottonii
seaweed and that of E. spinosum. Seaweed cultivation was conducted using raft off the
base (off bottom method) of 2 units with the size of 5 x 2.5 meters each. Spacing of each
seed was 25 -30 cm. Seed weight of seaweed E. cottonii and E. spinosum is equal to 100
grams. Maintenance time was for 40 days, and the sampling was done once every 10 days
as many as 10 samples of seaweed. The results showed that seaweed E. cottonii had faster
growth compared with E. spinosum. Seaweed daily growth of the species E. spinosum in
the first 10 days was faster than the seaweed of the species E. cottonii. However, the
second 10 days to the third 10 days E. cottonii seaweed growth was faster than E.
spinosum. The average weight of Euheuma cottonii for 40 days planting was 189.29 grams
while the average weight of Eucheuma spinosum was 185.55 grams. Water condition in
the location of research was still in the normal range for the growth of two species of
seaweed cultivated.
Keywords: Growth; Seaweed; Eucheuma spinosum; Euchema cottoni
1. Introduction
10779 tons with a total value of US $ 7.16 million it
kept increasing and ever reached 28104 tons in 1995
Seaweed is a non-fish fishery commodity. Foreign
with a total value of US $ 21.30 million (Junaidi et
demand for Indonesian seaweed in 1990 amounted to
al., 2007).
37
J. Environment 1(2014): 36–42
Bali is one of the islands of seaweed producers in
1. Absolute Growth
Indonesia. Seaweed production in Bali in 2008
decreased to 15.2% compared to that in 2007. One of
G = Wt − Wo
the centers of cultivation of seaweed in Bali is in the
Gr = Wt − Wo / t
village of Kutuh, sub-district of South Kuta, Badung,
Specification :
from the above data the researcher deems it necessary
G
to do other research on the growth of seaweed in
order to improve seaweed production and utilization
of cultivated land which is still not optimal.
The objective to be achieved in the implementation of
this study was to determine how big the difference
between the growth rate of E. cottonii seaweed and E.
:
(1)
Absolute Growth
Gr :
Daily Growth Rate
Wt :
weight at the time of observation (gr)
Wo :
Initial Weight (grams)
t
:
time (days)
2. Absolute Growth
spinosum in the waters of Kutuh Village, South KutaBali Badung regency
SGR =
2. Methods
ln wt − ln wo
x100%
t
(2)
Specification :
2.1. Research Methods
SGR :
Standard Growth Rate (%)
The method used in this study was a sample survey
lnwt :
Seaweed Final Weight (grams)
method or field survey (Hadi, 1986). Data would be
lnwo
:
analyzed using T test, and then the results of the
t
:
Seaweed Start Weight (grams)
time (days)
analysis were displayed in tables and graphs as well
as descriptive information.
Weight measurement data of seaweed was
3. Average Daily Growth
between the two examples and different types
⎞
⎛ wt
ADG = t ⎜
− 1⎟ x100%
wo
⎠
⎝
(Romimohtarto and Heilbron, 1999).
Specification :
analyzed using t-test. T-test was used to compare
Seaweed cultivation was conducted using a raft off
the base (off bottom method) of 2 units with straps
size of 3 meters each. Spacing of each seed is 15-20
cm. Type of seaweed used is Eucheuma cottoni and
Eucheuma spinosum. Seed weight of E. cottonii and
E. spinosum seaweed is equal to ± 100 grams.
ADG
:
Wt :
Weight after t days (gram)
Wo :
Initial Weight (grams)
t
time (days)
:
(3)
Daily Growth (%)
2.3. Supporting Parameters
Maintenance time was for 40 days, and the sampling
was done once every 10 days as many as 10 samples
Measured parameters are temperature, pH, salinity,
of seaweed.
currents and brightness. The parameters measured in
situ at each weight measurement of seaweed.
2.2. Main Parameters
2.4. Data Analysis
Calculation of absolute growth was done by using
an absolute formula, standard and average daily
Analysis of the data used was t-test. T-test can be
growth according to Effendi (1997).
divided into two, namely the t-test were used to test
38
J. Environment 1(2014): 36–42
the hypothesis of 1-sample and t-test used for
value is stated that the two species have different
hypothesis testing of 2-sample.
growth rates, i.e. t count > t table where t count was
0.840 and t table was 1.734.
3. Results and Discussion
In the observation and measurement of the fourth
ten days, the growth of Eucheuma cottonii reached
3.1. Seaweed Growth
250.20 grams, while the growth of Eucheuma
Based on the measurement results of the average
spinosum reached 236.13. Growth in Eucheuma
growth of 10 first ten days, Eucheuma cottonii was
cottonii was faster than Eucheuma spinosum. On the
equal to 130.89 grams, while the Eucheuma spinosum
fourth 10 days of measurement, the two species had
growth during the first ten days was 134.11 grams.
very low growth; this is because at the fourth 10 days
During the growth in the first ten days, there was a
of seaweed cultivation, both species were attacked by
difference between the two species, in which
pests, small fish around the site. The results of data
Eucheuma
than
analysis using t-test showed that there was a
Eucheuma cottonii. The results of data analysis using
difference in the average weight of both samples
t-test showed that there is a difference in both of the
during the fourth ten days. It is shown by the
average weight of a sample of the first ten days. It is
significant value of α> 0.05. This value states that the
shown by the significant value of α> 0.05. This value
two species had the same growth rate, i.e. t count > t
is stated that the two species have different growth
table where t count was 4.067 and t table was 1.734.
spinosum
had
faster
growth
rates, i.e. t count > t table where t count was -1.409
From the data analysis results, it can be seen that
the average weight of Euheuma cottonii for 40 days
and t table was 1.734.
Measurement of growth of the second 10 days on
planting was 189.29 grams while the average weight
Eucheuma cottonii amounted to 168.26 grams, while
of Eucheuma spinosum was 185.55 grams. From
the Eucheuma spinosum amounted to 168.31 grams.
these data, there was evidently a weight difference
Eucheuma
between the two species.
spinosum
had
faster
growth
than
Eucheuma cottonii. The results of data analysis using
t-test, showed that there was a difference in both the
average weight of a sample of the second ten day. It is
shown by the significant value of α> 0.05. This value
3.2. Absolute Growth
Results calculated for absolute growth rate and daily
growth rate are shown in Table 1. Based on the results
is stated that the two species have different growth
of the calculation, the average value of the absolute
rates, i.e. t count > t table where t count was -0.009
growth between E. Cottonii and E. Spinosum can be
and t table was 1.734.
seen in Figure 1.
Observations and Measurements on the third 10
days of Eucheuma cottonii’s growth amounted to
Table 1. Absolute growth rate (G) and Daily Growth
207.82 grams while the growth in Eucheuma
Rate (Gr).
spinosum amounted to 203.65. In the third ten days of
Parameters
this observation, there was a difference where
Eucheuma cottonii had faster growth compared with
Eucheuma spinosum. The results of data analysis
using t-test, showed that both the average weight of a
sample of the third ten days there was a difference. It
is shown by the significant value of α> 0.05. This
Absolute
growth rate
(G) (gr/10
day)
Daily
Growth
Rate (Gr)
(gr/day)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
30.31
37.37
39.56
42.38
33.50
34.20
35.34
32.48
3.03
3.74
3.96
4.24
3.35
3.42
3.53
3.25
J. Environment 1(2014): 36–42
39
growth rate was faster than the daily growth rate of E.
cottonii, the daily growth rate of E. cottonii was 3:03
g /day, while the daily growth rate of E. spinosum
was 3:35 g / day.
Figure 1. Graph Absolute Growth Rate
Absolute growth rate in E. cottonii and E.
spinosum is noticeable. At the first sampling, the
absolute growth rate of E. spinosum was faster than
that of E. cottonii, i.e. the rate of growth in E. cottonii
Figure 2. Graph Daily Growth Rate
amounted to 30.31 g / 10 days, whereas the growth
In the second sampling, daily growth rate of E.
rate of E. spinosum 33.50 g/10 days.
In the second sampling, the absolute growth rate of
cottonii was faster than the daily growth rate of E.
E. cottonii was faster than that of E. spinosum, i.e. the
spinosum, the daily growth rate of E. cottonii was
rate of growth in E. cottonii amounted to 37.37 g/10
3.74 g / day, while the daily growth rate of E.
days, whereas the growth rate of E. spinosum was
spinosum was 3.42 g/day. In the second 10-day
34.20 g/10 days.
sampling measurement, daily growth rate of E.
In the third sampling, the absolute growth rate of
cottonii was likely to increase from the first 10 days
E. cottonii was faster than the absolute growth rate of
of measurement, from 3:03 g / day to 3.74 g / day. In
E. spinosum, i.e. the rate of growth in E. cottonii was
E. spinosum, daily growth rate also increased, namely
39.56 g/10 days and the rate of growth of E. spinosum
3.35 g / day up to 3.42 g/day.
In the third sampling, daily growth rate in E.
was 35.34 g/10 days.
While in the fourth sampling, the absolute growth
cottonii was faster than the daily growth rate of E.
rate of E. cottonii was faster than the absolute growth
spinosum, namely daily growth rate of E. cottonii was
rate of E. spinosum, i.e. the rate of growth of E.
3.96 g / day, while the growth rate of E. spinosum
cottonii was 42.38 g/day, while the rate of growth in
was 3.53 g / day. Daily growth rate of E. cottonii
E. spinosum was 32.48 g/10 days. In the measurement
tended to increase the daily growth rate measurements
of the growth rate of the fourth 10 days seaweed
the second 10 days, i.e. from 3.74 g / day down to
growth of E. Spinosum species tended to decline, it is
3.96 g / day. Similarly, the daily growth rate of E.
because the seaweed is disturbed by pest, which is
Spinosum tended to increase from 3.42 g / day up to
eaten by fish.
3.53 g / day.
From the analysis, the calculation of daily growth
In the fourth sampling, daily growth rate in E.
and
cottonii was faster than the daily growth rate of E.
Eucheuma spinosum were obtained. This can be seen
spinosum, namely daily growth rate of E. cottonii was
in Figure 2.
4.24 g / day, while the growth rate of E. spinosum
rate
values
between
Eucheuma
cottonii
Daily growth rate in E. cottonii and E. spinosum is
was 3.25 g / day. Daily growth rate in E. spinosum
noticeable. At the first sampling, E. spinosum daily
tended to decrease from measurements daily growth
40
J. Environment 1(2014): 36–42
rate of the third 10 days, i.e. from 3.53 g / day down
to 3.25 g / day. Decreased daily growth rate in E.
spinosum was caused by pests, namely fish.
3.3. Standard Growth
At the first sampling, standard growth rate of E.
spinosum appeared higher than E. cottonii, which is
standard on the growth rate of E. cottonii, i.e. 2.63%,
while the standard growth rate of E. spinosum was
2.87%.
Figure 3. Graph of Standard Growth Rate
In the second sampling, standard growth rate of E.
cottonii looked higher than the standard growth rate
of E. spinosum, which is standard on the growth rate
of E. cottonii of 2.51%, while the standard growth
rate of E. spinosum was 2.27%. In the standard
growth rate of seaweed species E. Spinosum, there
Table 2. Standards Growth Rate (SGR)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
2.63
2.51
2.11
1.86
2.87
2.27
1.91
1.48
was a decline compared to the first 10 days of
sampling, i.e. from 2.87% down to 2.27%.
3.4. Average Daily Growth
In the third sampling, standard growth rate of E.
cottonii looked higher than the standard growth rate
of E. spinosum, which is standard on the growth rate
of E. cottonii at 2.11%, while the standard growth rate
of E. spinosum was 1.91%. In both species of
From the calculation of Average Daily Growth
(ADG) obtained value growth rate between E. cottonii
and E. spinosum are presented in Figure 4 and Table
3.
seaweed decreased percentage of growth rate
compared to the standard second 10-day sampling, in
which the standard growth rate of E. cottonii
decreased from 2.51% to 2.11%, while the decline in
the growth rate of E. spinosum was from 2.27% up to
1.91%.
Fourth sampling measurements, the standard
growth rate of E. cottonii looked higher than the
standard growth rate of E. spinosum, namely the
standard growth rate of E. cottonii was 1.86%, while
the standard growth rate of E. spinosum was 1.48%.
Figure 4. Graph Average Daily Growth
Of both species, there was a percentage decrease in
standard growth rate compared with the third
sampling, namely the E. cottonii from 2.11% to
1.86%, whereas in E. spinosum from 1.91% down to
1.48% as seen in Figure 3 and Table 2.
Based on the analysis, average daily growth of
seaweed on the first sampling, showed that the
average daily growth results are not much different,
i.e the percentage of E. cottonii average daily growth
is 1.41%, whereas in E. spinosum is 1.42 %.
In the second sampling, the percentage of average
daily growth in E. cottonii looked higher than the
41
J. Environment 1(2014): 36–42
percentage of average daily growth of E. spinosum,
3.5. Supporting Parameters
i.e. the percentage of average daily growth of E.
cottonii was 1.40%, while the percentage of average
In general, water conditions for the cultivation of
daily growth in E. spinosum was 1.38%. In
seaweed was still within tolerated limits for seaweed
percentage of average daily growth both types of
cultivation of E. Cottonii and E. Spinosum. Water
seaweed decreased compared to the first 10 days of
quality parameters measured during the process of
sampling, namely the E. cottonii from 1.41% down to
observation and calculation of seaweed weight,
1.40% while the E. spinosum decreased from 1.42%
measurement of water quality parameters underwent
to 1.40%.
three repetitions, i.e. morning, afternoon, and evening
time. The results of measurements of water quality
parameters can be seen in Table 4, namely:
Table 3. Average Daily Growth (ADG)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
1.41
1.40
1.37
1.35
1.42
1.38
1.36
1.32
Table 4. Average results of measurements of water
quality for seaweed cultivation.
Sampling Numbers
Parameters
In the third sampling, the percentage of average
daily growth in E. cottonii looked higher than the
percentage of average daily growth of E. spinosum,
0
1
2
3
4
34.3
34.4
34.8
35.4
34.4
29.8
30.8
28.6
28.3
29.7
pH
8.6
8.5
9.1
9.2
9.1
Flow (m/sec)
0.1
0.1
0.1
0.1
0.1
Visibility (%)
100
100
100
100
100
Salinity (‰)
Temperature
(⁰C)
i.e. the percentage of average daily growth of E.
cottonii was 1.37%, while the percentage of average
daily growth in E. spinosum was 1.36%. In both
species of seaweed, there was a decrease in the
percentage of average daily growth compared to the
second 10-day of sampling, where the percentage of
4. Conclusions and Suggestions
average daily growth of E. cottonii decreased from
1.40% to 1.37%, while the decline in the growth rate
4.1 Conclusions
of E. spinosum from 1.38% to 1.36%.
In
the
fourth
sampling
measurements,
the
percentage of average daily growth in E. cottonii
looked higher than the percentage of average daily
growth of E. spinosum, i.e. the percentage of average
daily growth of E. cottonii was 1.35%, while the
standard growth rate of E. spinosum was 1.32%. Of
both species, there was a daily percentage decline in
growth rate compared to the third sampling, namely
in the E. cottonii from 1.37% to 1.35%, whereas in E.
spinosum from 1.36% to 1.32%.
From the results of this study can be concluded that:
1. E. Cottonii seaweed and E. Spinosum were
cultivated on the same methods and locations,
seaweed E. cottonii had faster growth compared
with E. spinosum.
2. The daily growth of seaweed of E. spinosum
species during the first 10 days was faster than
seaweed of the species E. cottonii. However,
during the second 10 days to the third 10 days, E.
cottonii seaweed growth was faster than E.
spinosum.
3. The average weight of Euheuma cottonii for 40
days planting was 189.29 grams while the average
weight was 185.55 grams Eucheuma spinosum.
J. Environment 1(2014): 36–42
From these data, there was a weight difference
between the two species.
4. Conditions of waters in research location were
still in the normal range for growth of the two
species of seaweed cultivated.
4.2. Suggestions
The suggestion that can be made from the research
activities of seaweed growth rate is that that further
research needs to be done, with different treatment
methods, i.e. having to do with the methods of
cultivation and treatment place or a different location,
so as to know the different growth in different
locations.
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Pengkajian Budidaya Rumput Laut di Nusa
Tenggara Barat. Balai Pengkajian Teknologi
Pertanian NTB.
Santosa, G.W. 2003. Budidaya Rumput Laut di
Tambak. Program Community College.
Industri kelautan dan perikanan. Universitas
Diponegoro. Semarang.
Sediadi dan Budihardjo., 2000. Rumput Laut
Komuditas Unggulan. Grasindo Jakarta.
Setyati, A. W., 2003. Pemasaran Budidaya
Rumput Laut. Program Community College.
Industri Kelautan dan Perikanan. Universitas
Diponegoro Semarang. Semarang.
Soenardjo N., 2003. Membudidayakan Rumput
laut, Balai Pustaka Semarang.
Suptijah,
2002.
Rumput
Laut.
http://
www.rumput laut /com. Institut pertanian
Bogor. Bogor.
Winarno, 1996. Teknik Pengolahan Rumput
Laut. Pustaka Sinar Harapan. Jakarta.
© 2014 by the authors; licensee Udayana University, Indonesia. This article is an open access article distributed
under the terms and conditions of the Creative Commons Attribution license
(http://creativecommons.org/licenses/by/3.0/).
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Journal of Environment, 1, (2014), 36–42
Original Paper
Study on Growth Rate and Seaweed Eucheuma spinosum
And Euchema cottoni in Waters of Kutuh Village, South
Kuta Sub-District, District of Badung-Bali
Dwi Budi Wiyanto *
a
Study Program of Marine Sciences, Faculty of Fisheries and Marine Sciences, Udayana University, Bali Indonesia
* Corresponding author: Dwi Budi Wiyanto; E-Mail: [email protected]
Tel.: +62 361 702802
Received: 29 May 2014 / Accepted: 9 November 2014 / Published: 13 November 2013
Abstract: Seaweed is a non-fish fishery commodity. The market demand for seaweed, both
from the domestic and foreign markets has a bright future as a trade commodity on the
international market. Bali is one of the islands of seaweed producers in Indonesia. Seaweed
production in Bali in 2008, decreased to 15.2% compared to that in 2007. The purpose of
this study was to determine how big the difference between the growth rate of E. cottonii
seaweed and that of E. spinosum. Seaweed cultivation was conducted using raft off the
base (off bottom method) of 2 units with the size of 5 x 2.5 meters each. Spacing of each
seed was 25 -30 cm. Seed weight of seaweed E. cottonii and E. spinosum is equal to 100
grams. Maintenance time was for 40 days, and the sampling was done once every 10 days
as many as 10 samples of seaweed. The results showed that seaweed E. cottonii had faster
growth compared with E. spinosum. Seaweed daily growth of the species E. spinosum in
the first 10 days was faster than the seaweed of the species E. cottonii. However, the
second 10 days to the third 10 days E. cottonii seaweed growth was faster than E.
spinosum. The average weight of Euheuma cottonii for 40 days planting was 189.29 grams
while the average weight of Eucheuma spinosum was 185.55 grams. Water condition in
the location of research was still in the normal range for the growth of two species of
seaweed cultivated.
Keywords: Growth; Seaweed; Eucheuma spinosum; Euchema cottoni
1. Introduction
10779 tons with a total value of US $ 7.16 million it
kept increasing and ever reached 28104 tons in 1995
Seaweed is a non-fish fishery commodity. Foreign
with a total value of US $ 21.30 million (Junaidi et
demand for Indonesian seaweed in 1990 amounted to
al., 2007).
37
J. Environment 1(2014): 36–42
Bali is one of the islands of seaweed producers in
1. Absolute Growth
Indonesia. Seaweed production in Bali in 2008
decreased to 15.2% compared to that in 2007. One of
G = Wt − Wo
the centers of cultivation of seaweed in Bali is in the
Gr = Wt − Wo / t
village of Kutuh, sub-district of South Kuta, Badung,
Specification :
from the above data the researcher deems it necessary
G
to do other research on the growth of seaweed in
order to improve seaweed production and utilization
of cultivated land which is still not optimal.
The objective to be achieved in the implementation of
this study was to determine how big the difference
between the growth rate of E. cottonii seaweed and E.
:
(1)
Absolute Growth
Gr :
Daily Growth Rate
Wt :
weight at the time of observation (gr)
Wo :
Initial Weight (grams)
t
:
time (days)
2. Absolute Growth
spinosum in the waters of Kutuh Village, South KutaBali Badung regency
SGR =
2. Methods
ln wt − ln wo
x100%
t
(2)
Specification :
2.1. Research Methods
SGR :
Standard Growth Rate (%)
The method used in this study was a sample survey
lnwt :
Seaweed Final Weight (grams)
method or field survey (Hadi, 1986). Data would be
lnwo
:
analyzed using T test, and then the results of the
t
:
Seaweed Start Weight (grams)
time (days)
analysis were displayed in tables and graphs as well
as descriptive information.
Weight measurement data of seaweed was
3. Average Daily Growth
between the two examples and different types
⎞
⎛ wt
ADG = t ⎜
− 1⎟ x100%
wo
⎠
⎝
(Romimohtarto and Heilbron, 1999).
Specification :
analyzed using t-test. T-test was used to compare
Seaweed cultivation was conducted using a raft off
the base (off bottom method) of 2 units with straps
size of 3 meters each. Spacing of each seed is 15-20
cm. Type of seaweed used is Eucheuma cottoni and
Eucheuma spinosum. Seed weight of E. cottonii and
E. spinosum seaweed is equal to ± 100 grams.
ADG
:
Wt :
Weight after t days (gram)
Wo :
Initial Weight (grams)
t
time (days)
:
(3)
Daily Growth (%)
2.3. Supporting Parameters
Maintenance time was for 40 days, and the sampling
was done once every 10 days as many as 10 samples
Measured parameters are temperature, pH, salinity,
of seaweed.
currents and brightness. The parameters measured in
situ at each weight measurement of seaweed.
2.2. Main Parameters
2.4. Data Analysis
Calculation of absolute growth was done by using
an absolute formula, standard and average daily
Analysis of the data used was t-test. T-test can be
growth according to Effendi (1997).
divided into two, namely the t-test were used to test
38
J. Environment 1(2014): 36–42
the hypothesis of 1-sample and t-test used for
value is stated that the two species have different
hypothesis testing of 2-sample.
growth rates, i.e. t count > t table where t count was
0.840 and t table was 1.734.
3. Results and Discussion
In the observation and measurement of the fourth
ten days, the growth of Eucheuma cottonii reached
3.1. Seaweed Growth
250.20 grams, while the growth of Eucheuma
Based on the measurement results of the average
spinosum reached 236.13. Growth in Eucheuma
growth of 10 first ten days, Eucheuma cottonii was
cottonii was faster than Eucheuma spinosum. On the
equal to 130.89 grams, while the Eucheuma spinosum
fourth 10 days of measurement, the two species had
growth during the first ten days was 134.11 grams.
very low growth; this is because at the fourth 10 days
During the growth in the first ten days, there was a
of seaweed cultivation, both species were attacked by
difference between the two species, in which
pests, small fish around the site. The results of data
Eucheuma
than
analysis using t-test showed that there was a
Eucheuma cottonii. The results of data analysis using
difference in the average weight of both samples
t-test showed that there is a difference in both of the
during the fourth ten days. It is shown by the
average weight of a sample of the first ten days. It is
significant value of α> 0.05. This value states that the
shown by the significant value of α> 0.05. This value
two species had the same growth rate, i.e. t count > t
is stated that the two species have different growth
table where t count was 4.067 and t table was 1.734.
spinosum
had
faster
growth
rates, i.e. t count > t table where t count was -1.409
From the data analysis results, it can be seen that
the average weight of Euheuma cottonii for 40 days
and t table was 1.734.
Measurement of growth of the second 10 days on
planting was 189.29 grams while the average weight
Eucheuma cottonii amounted to 168.26 grams, while
of Eucheuma spinosum was 185.55 grams. From
the Eucheuma spinosum amounted to 168.31 grams.
these data, there was evidently a weight difference
Eucheuma
between the two species.
spinosum
had
faster
growth
than
Eucheuma cottonii. The results of data analysis using
t-test, showed that there was a difference in both the
average weight of a sample of the second ten day. It is
shown by the significant value of α> 0.05. This value
3.2. Absolute Growth
Results calculated for absolute growth rate and daily
growth rate are shown in Table 1. Based on the results
is stated that the two species have different growth
of the calculation, the average value of the absolute
rates, i.e. t count > t table where t count was -0.009
growth between E. Cottonii and E. Spinosum can be
and t table was 1.734.
seen in Figure 1.
Observations and Measurements on the third 10
days of Eucheuma cottonii’s growth amounted to
Table 1. Absolute growth rate (G) and Daily Growth
207.82 grams while the growth in Eucheuma
Rate (Gr).
spinosum amounted to 203.65. In the third ten days of
Parameters
this observation, there was a difference where
Eucheuma cottonii had faster growth compared with
Eucheuma spinosum. The results of data analysis
using t-test, showed that both the average weight of a
sample of the third ten days there was a difference. It
is shown by the significant value of α> 0.05. This
Absolute
growth rate
(G) (gr/10
day)
Daily
Growth
Rate (Gr)
(gr/day)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
30.31
37.37
39.56
42.38
33.50
34.20
35.34
32.48
3.03
3.74
3.96
4.24
3.35
3.42
3.53
3.25
J. Environment 1(2014): 36–42
39
growth rate was faster than the daily growth rate of E.
cottonii, the daily growth rate of E. cottonii was 3:03
g /day, while the daily growth rate of E. spinosum
was 3:35 g / day.
Figure 1. Graph Absolute Growth Rate
Absolute growth rate in E. cottonii and E.
spinosum is noticeable. At the first sampling, the
absolute growth rate of E. spinosum was faster than
that of E. cottonii, i.e. the rate of growth in E. cottonii
Figure 2. Graph Daily Growth Rate
amounted to 30.31 g / 10 days, whereas the growth
In the second sampling, daily growth rate of E.
rate of E. spinosum 33.50 g/10 days.
In the second sampling, the absolute growth rate of
cottonii was faster than the daily growth rate of E.
E. cottonii was faster than that of E. spinosum, i.e. the
spinosum, the daily growth rate of E. cottonii was
rate of growth in E. cottonii amounted to 37.37 g/10
3.74 g / day, while the daily growth rate of E.
days, whereas the growth rate of E. spinosum was
spinosum was 3.42 g/day. In the second 10-day
34.20 g/10 days.
sampling measurement, daily growth rate of E.
In the third sampling, the absolute growth rate of
cottonii was likely to increase from the first 10 days
E. cottonii was faster than the absolute growth rate of
of measurement, from 3:03 g / day to 3.74 g / day. In
E. spinosum, i.e. the rate of growth in E. cottonii was
E. spinosum, daily growth rate also increased, namely
39.56 g/10 days and the rate of growth of E. spinosum
3.35 g / day up to 3.42 g/day.
In the third sampling, daily growth rate in E.
was 35.34 g/10 days.
While in the fourth sampling, the absolute growth
cottonii was faster than the daily growth rate of E.
rate of E. cottonii was faster than the absolute growth
spinosum, namely daily growth rate of E. cottonii was
rate of E. spinosum, i.e. the rate of growth of E.
3.96 g / day, while the growth rate of E. spinosum
cottonii was 42.38 g/day, while the rate of growth in
was 3.53 g / day. Daily growth rate of E. cottonii
E. spinosum was 32.48 g/10 days. In the measurement
tended to increase the daily growth rate measurements
of the growth rate of the fourth 10 days seaweed
the second 10 days, i.e. from 3.74 g / day down to
growth of E. Spinosum species tended to decline, it is
3.96 g / day. Similarly, the daily growth rate of E.
because the seaweed is disturbed by pest, which is
Spinosum tended to increase from 3.42 g / day up to
eaten by fish.
3.53 g / day.
From the analysis, the calculation of daily growth
In the fourth sampling, daily growth rate in E.
and
cottonii was faster than the daily growth rate of E.
Eucheuma spinosum were obtained. This can be seen
spinosum, namely daily growth rate of E. cottonii was
in Figure 2.
4.24 g / day, while the growth rate of E. spinosum
rate
values
between
Eucheuma
cottonii
Daily growth rate in E. cottonii and E. spinosum is
was 3.25 g / day. Daily growth rate in E. spinosum
noticeable. At the first sampling, E. spinosum daily
tended to decrease from measurements daily growth
40
J. Environment 1(2014): 36–42
rate of the third 10 days, i.e. from 3.53 g / day down
to 3.25 g / day. Decreased daily growth rate in E.
spinosum was caused by pests, namely fish.
3.3. Standard Growth
At the first sampling, standard growth rate of E.
spinosum appeared higher than E. cottonii, which is
standard on the growth rate of E. cottonii, i.e. 2.63%,
while the standard growth rate of E. spinosum was
2.87%.
Figure 3. Graph of Standard Growth Rate
In the second sampling, standard growth rate of E.
cottonii looked higher than the standard growth rate
of E. spinosum, which is standard on the growth rate
of E. cottonii of 2.51%, while the standard growth
rate of E. spinosum was 2.27%. In the standard
growth rate of seaweed species E. Spinosum, there
Table 2. Standards Growth Rate (SGR)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
2.63
2.51
2.11
1.86
2.87
2.27
1.91
1.48
was a decline compared to the first 10 days of
sampling, i.e. from 2.87% down to 2.27%.
3.4. Average Daily Growth
In the third sampling, standard growth rate of E.
cottonii looked higher than the standard growth rate
of E. spinosum, which is standard on the growth rate
of E. cottonii at 2.11%, while the standard growth rate
of E. spinosum was 1.91%. In both species of
From the calculation of Average Daily Growth
(ADG) obtained value growth rate between E. cottonii
and E. spinosum are presented in Figure 4 and Table
3.
seaweed decreased percentage of growth rate
compared to the standard second 10-day sampling, in
which the standard growth rate of E. cottonii
decreased from 2.51% to 2.11%, while the decline in
the growth rate of E. spinosum was from 2.27% up to
1.91%.
Fourth sampling measurements, the standard
growth rate of E. cottonii looked higher than the
standard growth rate of E. spinosum, namely the
standard growth rate of E. cottonii was 1.86%, while
the standard growth rate of E. spinosum was 1.48%.
Figure 4. Graph Average Daily Growth
Of both species, there was a percentage decrease in
standard growth rate compared with the third
sampling, namely the E. cottonii from 2.11% to
1.86%, whereas in E. spinosum from 1.91% down to
1.48% as seen in Figure 3 and Table 2.
Based on the analysis, average daily growth of
seaweed on the first sampling, showed that the
average daily growth results are not much different,
i.e the percentage of E. cottonii average daily growth
is 1.41%, whereas in E. spinosum is 1.42 %.
In the second sampling, the percentage of average
daily growth in E. cottonii looked higher than the
41
J. Environment 1(2014): 36–42
percentage of average daily growth of E. spinosum,
3.5. Supporting Parameters
i.e. the percentage of average daily growth of E.
cottonii was 1.40%, while the percentage of average
In general, water conditions for the cultivation of
daily growth in E. spinosum was 1.38%. In
seaweed was still within tolerated limits for seaweed
percentage of average daily growth both types of
cultivation of E. Cottonii and E. Spinosum. Water
seaweed decreased compared to the first 10 days of
quality parameters measured during the process of
sampling, namely the E. cottonii from 1.41% down to
observation and calculation of seaweed weight,
1.40% while the E. spinosum decreased from 1.42%
measurement of water quality parameters underwent
to 1.40%.
three repetitions, i.e. morning, afternoon, and evening
time. The results of measurements of water quality
parameters can be seen in Table 4, namely:
Table 3. Average Daily Growth (ADG)
Seaweed
species
Eucheuma
cottonii
Eucheuma
spinosum
10 day
(1)
10 day
(2)
10 day
(3)
10 day
(4)
1.41
1.40
1.37
1.35
1.42
1.38
1.36
1.32
Table 4. Average results of measurements of water
quality for seaweed cultivation.
Sampling Numbers
Parameters
In the third sampling, the percentage of average
daily growth in E. cottonii looked higher than the
percentage of average daily growth of E. spinosum,
0
1
2
3
4
34.3
34.4
34.8
35.4
34.4
29.8
30.8
28.6
28.3
29.7
pH
8.6
8.5
9.1
9.2
9.1
Flow (m/sec)
0.1
0.1
0.1
0.1
0.1
Visibility (%)
100
100
100
100
100
Salinity (‰)
Temperature
(⁰C)
i.e. the percentage of average daily growth of E.
cottonii was 1.37%, while the percentage of average
daily growth in E. spinosum was 1.36%. In both
species of seaweed, there was a decrease in the
percentage of average daily growth compared to the
second 10-day of sampling, where the percentage of
4. Conclusions and Suggestions
average daily growth of E. cottonii decreased from
1.40% to 1.37%, while the decline in the growth rate
4.1 Conclusions
of E. spinosum from 1.38% to 1.36%.
In
the
fourth
sampling
measurements,
the
percentage of average daily growth in E. cottonii
looked higher than the percentage of average daily
growth of E. spinosum, i.e. the percentage of average
daily growth of E. cottonii was 1.35%, while the
standard growth rate of E. spinosum was 1.32%. Of
both species, there was a daily percentage decline in
growth rate compared to the third sampling, namely
in the E. cottonii from 1.37% to 1.35%, whereas in E.
spinosum from 1.36% to 1.32%.
From the results of this study can be concluded that:
1. E. Cottonii seaweed and E. Spinosum were
cultivated on the same methods and locations,
seaweed E. cottonii had faster growth compared
with E. spinosum.
2. The daily growth of seaweed of E. spinosum
species during the first 10 days was faster than
seaweed of the species E. cottonii. However,
during the second 10 days to the third 10 days, E.
cottonii seaweed growth was faster than E.
spinosum.
3. The average weight of Euheuma cottonii for 40
days planting was 189.29 grams while the average
weight was 185.55 grams Eucheuma spinosum.
J. Environment 1(2014): 36–42
From these data, there was a weight difference
between the two species.
4. Conditions of waters in research location were
still in the normal range for growth of the two
species of seaweed cultivated.
4.2. Suggestions
The suggestion that can be made from the research
activities of seaweed growth rate is that that further
research needs to be done, with different treatment
methods, i.e. having to do with the methods of
cultivation and treatment place or a different location,
so as to know the different growth in different
locations.
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