POTENTIAL FOR SOME VARIETY UPTAKE RICE SWAMP LAND IN TIDAL ACID SULPHATE NEW OPENINGS

POTENTIAL FOR SOME VARIETY UPTAKE RICE SWAMP LAND
IN TIDAL ACID SULPHATE NEW OPENINGS
Asmahan Akhmad 1)
, Suntoro Wongso Atmojo 2)
,
Saeri Sagiman 3)
and Widyatmani Sih Dewi 2)
1)
Student University Graduate Program of March Surakarta.
2)
Lecturer University Graduate Program of March Surakarta
3)
Faculty of Agriculture, University of Tanjungpura Pontianak.
ABSTRAKS
Population growth, which grew rapidly from year to year has implications for the needs of
foodstuffs also increased. On the other hand, the conversion of productive land into non-agricultural
land such as residential, urban and infrastructure development and other needs that can not be
avoided. This prompted the government to look for potential land that has not been used optimally.
One attempt to solve the problem is with the expansion of planting areas and new paddy fields coming
from opening new land. The opening of new land or new paddy fields meant is open lands derived
from secondary forest land by way of reclaiming land, making levees, floodgates, grammar channels
and rice fields. Therefore, this area contained in the tidal marsh land dominated by acid sulfate soil,
the land is classified into marginal land or problematic. In general, the problem of acid sulphate soils
for agriculture are: the availability of macro and micro nutrients low to very low, acid soil pH to very
acidic, many toxic compounds, nutrients are in a bound state, the existence of a shallow layer of pyrite
and land drainage impeded. Based on these conditions, only rice plants that can be grown on the land,
but production is still very low, averaging 1.5 tonnes / hectare. Efforts to increase the productivity of
acid sulphate soils, liming and fertilization is required. After the treatment is given, also required plant
tissue analysis to determine the potential uptake of some varieties of rice. The results showed that soil
type Histic sulfaquents with moderate fertility levels and the toughest obstacles exist in the presence
of a shallow layer of pyrite and toxic compounds. Beradasarkan ANOVA, almost all of the results of
the analysis of nutrient uptake and the upper part of the roots of rice plants, either in-house research
and in the field of plastic, real effect. Varieties Ringkak Janggut (local) most potential in nutrient
uptake.
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Keywords: potential, tidal wetlands, acid sulphate soils, new openings,the rice plants
1.Introduction
Rice (Oryza sativa. L) is a rice crop which is a staple food for most Asian societies, even in
every Ben, except Antarctica (Umadevi et al, 2009), (Jing and Jichao, 2012), (Omatola and Onojah
(2012) and Veni et al (2013). Thus Agriculture (Rice), is still a major sector in many countries
(Owusu et al, 2013). However, in line with the demand for rice is increasing every year, as a result of
population growth and the decreasing agricultural productive land changed into non-agricultural land,
it is necessary to land the new openings, new openings land is cleared and comes from secondary
forest land and have not been planted with rice (food). The management of the land, should be given
emphasis to the development of appropriate technology-specific fit, so that farming is done in
accordance with agro-ecological and farmer participation be made a priority (Reddy et al, 2001). In
West Kalimantan, opening new land that can be utilized is marginal land, such as tidal swamp land
sulfate sour (Adi Widjaja and Alihamsyah, 1998). Acid sulphate soils is one of the types of soil found
in some parts of Indonesia (Adi Widjaja and Alihamsyah, 1998). The spread of acid sulphate soils
occur in swampy areas that are affected by tidal water depth variations that depend on the period of
sedimentation (Widowati and Sukristiyonubowo, 2006). The development of agriculture (rice) in the
area of tidal marsh acid sulfate has various problems, such as high soil acidity (volatile), the difficulty
of estimating the occurrence of floods and many toxic compounds, such as Fe (Nurzakiah et al, 2012).
In the anaerobic conditions (acid sulphate), sulfate and iron ions respectively reduced and turned into
iron ions which then ends up forming pyrite (Akhmad, 1996) and (Rosilawati, et al, 2014). The
amount of sulfuric acid content, resulting in this land become infertile (Ali et al, 2012) and (Hairani

and Ani Susilawati, 2013). The wetlands occur environmental variability, such as: runoff, erosion,
flooding, sediment deposition and positively correlated to soil microbial richness (Bruland and
Richadson, 2005). Testing several varieties of rice and amelioration, will get varieties that have the
best potential for nutrient uptake in rice (Zahra, 2010). Liming is one of the efforts to improve the
biological properties of the soil (Basu et al, 2011) and reduce the negative effects of sulfuric acid on
acid soils (Sadiq and Umara Babagana, 2012). Liming can reduce soil acidity and Al toxicity in acid
sulphate soils (Nurzakiah et al, 2012). Calcification can also improve soil fertility, soil pH, cation
exchange capacity, Ca confused, Mg, P and K are available, along with a decrease in the content of Al
(Shamsuddin and Fauziah, 2010). Fertilization is intended to improve soil fertility (Akhmad, 1985),
because it can provide nutrients to plants (Raut et al, 2013). The availability of nutrients or plant
nutrition is very important, especially nitrogen in various stages of growth and production of rice
(Pathat et al, 2006), (Lavanya and Ganapathy, 2009) and (Assefa et al, 2013). To determine whether
the liming and fertilization effect on the potential uptake some rice varieties, the plant tissue analyzed
the roots and the top of the plant. Thus, the purpose of this study are: To obtain rice varieties potential
nutrient uptake highest tidal swamp land acid sulphate new openings.
2.Methods
This research was carried out in plastic house and in the field. Research in plastic housings,
made in the land of the Faculty of Agriculture, University of Tanjungpura Pontianak. While the land
was taken from the village of Teluk Pakedai Remis Strait. This study dilaksanaka for 5 months, from
early March until the end of August 2013. The study began with the manufacture of plastic house and
prepare all the equipment and materials to be used for research and observation and recording of data
based on the variables that have been made. Field research conducted in the village of Teluk Pakedai
Remis Strait. Research over the past 6 months, since mid-November 2013 to mid-May 2014. The
variable uptake (45 HST), covering the roots and the top of the plant are: N, P, K, Ca, Mg, Fe and S.
Both studies using a factorial experiment with a randomized block design (RAK) with 2 factors
(V and P). Research in the plastic house, the first six rice varieties, namely: V1 (Variety Ciherang),
V2 (Variety Bagendit), V3 (Variety Inpara 3), V4 (Variety Mira.1), V5 (Variety Si more low), V6 (
Ringkak varieties beard). The second factor is the dose dolomite liming and NPK fertilization with
label P, consists of three levels: P1 (1 tonne dolomite and 60 kg NPK / ha), P2 (2 tons of dolomite and
90 kg NPK / ha) and P3 (3 tons dolomite lime and 120 kg NPK / ha). Of the two factors mentioned
above, there are 18 combinations of treatment with four (4) replicates, so there are 72 combinations of
treatments. For research in the field, the first three varieties of rice, which are: Varieties Bagendit, V2
and V3 Varieties Varieties Mira.1 Ringkak beard. The second factor is the fifth dose of dolomite
liming and NPK fertilization, namely: P0 (0 tonnes of dolomite lime-0 kg NPK / ha), P1 (1 tonne
dolomite-60 kg NPK / ha), P2 (2 tons of dolomite lime-120 kg NPK / ha), P3 (three tonne dolomite
180 kg NPK / ha) and P4 (4 tons of dolomite-240 kg NPK / ha). Of the two factors mentioned above,
there were 15 treatment combinations with repetition, so there are 45 combinations of treatments.
3. Results and Discussion
3.1. Research In Plastichouse.
3.1.1. In Part Root Nutrient Uptake ofRice (45 HST)
3.1.1.1. Nitrogen
Figure 1. Plot Nutrient Uptake Nitrogen (45 HST)

Based on ada data, it can be explained that the treatment varieties and dolomite liming
treatment NPK-fertilizer interaction. While in Figure 1, shows that the combined treatment V6P3
shows the highest and lowest V5P1 showed the combination treatment
. According to Patti et. al. (2013) Nitrogen (N) is a major nutrient for plant growth. N function,
namely: to increase vegetative growth, increasing the number of tillers and increasing the number of
grains / hill and increase the size of grain of rice. However, N is the nutrient most often limited to land
paddy, the main causes loss of N from the soil paddy is through denitrification and leaching. N
fertilizer management should pay attention to lost through denitrification and leaching of N is
(Pujiastuti, 2006). This shows that the uptake of nutrients nitrogen in rice plants of the highest when
compared with other treatment combination. This is supported by nutrients in the soil sufficient N
available during the phase of growth, less N or N metabolic disturbance at a particular time range will
limit the generative phase. Therefore, to obtain nutrient uptake and high yield, nutrient N should be
provided with sufficient during the growth phase (Sudjana, 2014). The occurrence of a loss of N in
rice plants derived from manure as a result of nitrification amides and ammonium to nitrate, then
inhibiting the conversion of N-NH4 + to N-NO 3 by inhibiting the growth or activity of
Nitrosomonas, tested to minimize the loss (Pujiastuti, 2006).
3.1.1.2. Phosphorus
Figure 2. Plot of Phosphorus Nutrient Uptake (45 HST)
From the data obtained, it can be explained that between the two treatments, the varieties and
dolomite liming-fertilization NPK interaction. While from Figure 19, it appears that a combination
treatment V6P2 V1P2 highs and lows.
Phosphorus (P) is a nutrient required by plants in large amounts (macro), but the number P is
smaller when compared with N and K. For serapapan of P in the roots of rice plants ranged from 0.01
to 0.08%, whereas to the top of the plant ranged from 0.08 to 0.21%. According to Makarim (2005)
optimal levels of P in the plant during the vegetative growth is from 0.3 to 0.5%. Further explained,
that the P absorbed by plants in the form of primary orthophosphate ion (H2SO4-) and orthophosphate
ion secondary (H2PO42-) and a small amount is firofosfat and metaphosphate and organic phosphate
compounds form water-soluble, for example nucleic acids and fitin.
3.1.1.3. Potassium
Figure 3. Plot of Potassium Nutrient Uptake (45 HST)

Based on the data, it appears that there is interaction between the two treatments, ie varieties
and dolomite liming-fertilization NPK. Figure 3 can be explained, that is combination treatment V6P2
the highest, while the lowest V1P2.
Potassium (K) is an essential nutrient in addition to N and P. Although K in the soil is quite
large, but the percentage of available for plants during the growing season low. Nutrient uptake by
roots of rice plants ranged from 0.01 to 0.08%, while the upper part of the rice plant from 0.08 to
0.21%. According Buckmann and Brady (1982), that the availability of K in the soil can be classified
into: K immediately available, K and K are relatively slow terdia not available. Relatively K available
forms include 90-98% of the total K in mineral soil. Compounds that are relatively unavailable
feldpar and mica are relatively resistant to weathering. But with the influence of water containing
carbonate and the acidic clay will help the process of destruction of the primary mineral and
consequently be exempt element K and other bases. Further explained, that the slow K available
forms include 18-20% of the total K in the soil. K form is fixed by mineral 2: 1 as illite, chlorite and
vermiculite. K is fixed can not be replaced through nutrient exchange system, so that it becomes
available later.
3.1.1.4. Calcium
Figure 4. Plot Nutrient Absorption Calcium (45 HST)
Based on the data, it appears that there is interaction between the two treatments, ie varieties
and dolomite liming-fertilization NPK. Whereas from Figure 4 can be explained, that is combination
treatment V5P2 highest and lowest V1P2.
For Ca uptake by roots of rice plants ranged from 0.08 to 0.64, while for the top of the rice
plant from 0.24 to 0.44%. Ca nutrients are absorbed in the form of divalent cations Ca2 +. Ca2 +
uptake is limited to the tip of the root: root area youth who have not experienced the endodermis cell
wall suberisasi. Ca enter through the xylem pembuluih apoplastik. Freight limited penetrate the
membrane, root growth is necessary in order to continuously meet the needs of decision-Ca. Freight
through the xylem, Ca carried away by the flow of water transpiration, limited mobility through the
phloem (Gadrner et. Al., 1991).
3.1.1.5. Magnesium
Figure 5. Plot Nutrient Absorption Magnesium (45 HST)

From the data can be explained, that between the two treatments, the varieties and dolomite
liming-fertilization NPK interaction. For Figure 5 can be explained, that is combination treatment
V5P2 the highest, while the lowest V1P2.
For Mg nutrient uptake by roots of rice plants ranged from 0.02 to 0.23%, while for the top of
the rice plants ranged from 0.13 to 0.23%. Mg is absorbed by plants in the form of Mg 2+. The most
decisive cation exchange reaction behavior of Mg in the soil. Quick balance between confused with
dissolved: Mg Mg in solution supporting mixed up, remember the factors of quantity and intensity of
Gardner et. al. (1991). Further explained, that Mg can easily be managed by liming at low pH soil air
(with lime dolomite), calcification may cause kekahatan Mg if high levels of Ca (calcite) is used on
soils with low Mg levels. Soil with a high K levels led to kekahatan Mg, because it can inhibit the
absorption of Mg.
3.1.1.6. Nutrient Uptake Fe
Figure 6. Plot Nutrient Uptake Fe (45 HST)
From the available data, it appears that there is no real influence, between treatment varieties
and dolomite-calcification treatment NPK fertilizer. As for Figure 6 can be explained, that is
combination treatment V1P3 terrtinggi, while the lowest V1P2.
For Fe uptake by roots of rice plants varies from 0.05 - 0, 08%, whereas Fe uptake by plants
ranged from the top of the 0.03 to 0.05%. Fe uptake of nutrients through the leaves is considered
faster than the absorption through the roots, especially on plants that are deficient Fe. The function of
nutrient Fe is chloroplast protein synthesis and respiration as perikosida enzyme, catalase, prredoksin
and cytochrome oxidase. Another function is as an executor Fe electron transfer in metabolic
processes. The process is for example the reduction of N2, and sulfate reductase reductase Fe
nitrat.Kekurangan nutrients can result in inhibition of the formation of klofil and finally the
preparation of the protein to be imperfect as well as the occurrence of chlorosis on the leaves. Iron
deficiency can lead to increased levels of the amino acid in the leaves and drastically decrease the
number of ribosomes, decreased levels of pigments and proteins as well as a reduction in the activity
of all enzymes (Gardner et. Al (1991).
3.1.1.7. Sulfur
Figure 7. Plot Nutrient Uptake Sulfur (45 HST)

Based on the data, it can be explained that between the two treatments, varieties and dolomite
liming-fertilization NPK interaction. While the combination treatment V1P2 highest and lowest V2P1
(Figure 7).
According to Salisbury and Ross (1995) Nutrient Sulfur (S) is required plants in relatively
high amounts, less than N or K and similar to P, Ca and Mg. Nutrient uptake by roots barkisar sulfate
0.16 to 0.24%, while the upper part of rice plants ranged from 0.19 to 0.34%. The amount of nutrients
absorbed by plants is determined by the amount of nutrients in the soil solution. S element in the soil
can be absorbed by plants as SO4
2-
soluble soil solution, so the plant roots are able to absorb the S
element. The greater efficiency of absorption S, then S is absorbed by plants bigger. So the growth of
plants is also good. The more the stems and leaves are produced, so that the weight berangkasan will
also increase. S levels in soil are generally about 0.06% contained in the form of sulfate (SO4
2-
),
sulfide (S 2-
) and organic compounds. S elements absorbed by plants in the form of SO4
2-.
This
element is highly mobile in soil and no cars inside the plant, so it can not be immediately converted
the place of the old leaves to the growing point.
3.1.2. Nutrient Uptake In Upper Rice
3.1.2.1. Nitrogen
Based on the data, it appears that the treatment varieties and dolomite liming-fertilization NPK
interaction. While the Figure 8 can be explained, that V2P1 and V3P1 the highest combined treatment
and lowest V5P1.
The existence of N in paddy soil greatly affect the vegetative growth of rice crops. It is also
explained by Nurmegawati et. al. (2007), that portion of N transported harvest, partly back as crop
residues, lost to the atmosphere and back again and lost through leaching. N absorbed by plants in the
form of NO3- or NH4 + ion from the ground. Rice plants are able to absorb elements from the soil N
sekitas 19-47%. While the absorption of N fertilizer applied to crops is only about 40-50%. N levels
on average in the plant tissue is 2-4% dry weight (Mukherjee, 1986). From the research content of N
for root uptake tanamanadi at maximum vegetative phase ranged from 1.32 to 2.32%, while for the
top crop N uptake ranged from 2.98 to 3.97%. Described by Patti et. al (2013), that an increase in
uptake of N the top of the plant when compared to the roots, due to panicle formation which is the end
of the vegetative process, so that absorption of N is more to the leaves of plants.
3.1.2.2. Phosphorus
Figure 9. Plot Phosphorus Nutrient Uptake (45 HST)

Based on the data, it can be explained that there is interaction between treatment varieties with
dolomite liming-fertilization NPK. From Figure 9, it appears that a combination treatment V2P1
V4P1 highs and lows.
Phosphorus is absorbed in the form of inorganic ions quickly turned into an organic phosphate
compound. Phosphorus is easy to move between cars or plant tissue. P nutrient uptake by plant roots
can only be through interception and diffusion within a short distance (<0.02 cm), so that the
efficiency of fertilizers is generally very low, at around 10%. While most of the fertilizer P that is not
absorbed by the plant will not be lost washed, but became stable of P that is not available to plants and
subsequently fixed as Al-P and Fe-P in acid soils (pH <5.5) (Pitaloka, 2004 ). Further explained, that
the essential function of P in the plant, which is in the process of photosynthesis, respiration, energy
transfer and storage, division and cell enlargement. The first signs or symptoms of P deficiency
plants, the plants become stunted, leaf shape is not normal and if the acute deficiency, there are parts
of leaves, fruit and stems die. Old leaves are affected first when compared with young leaves. DAPT
P deficiency also causes delay maturity. Rice plants were grown on soil P deficiency can lead to
reduced grain filling.
3.1.2.3. Potassium
Figure 10. Plot Potassium Nutrient Uptake (45 HST)
Judging from the data obtained, it was among the varieties and liming treatment dolomite
NPK-fertilizer interaction. While from Figure 10, can be explained that a combination V2P1 highest
and lowest V4P1.
Reported, that most Asian soil does not require K as N or P, and that only a slight increase in
the results obtained with fertilizer K (Pujiastuti, 2006). According to Marschner (1998) especially for
rice plants K serves to: (1) Strengthening straw, (2) Accelerating the process of the formation of
proteins, (3) Improving kualias plants, (4) Help translocation of starch, (5) Increase the resistance of
plants to pests and disease and (6) Making more pithy grain and lowering the percentage of empty
grain. Further explained, that K deficiency will block the process of photosynthesis, metabolism and
translocation of carbohydrates from leaves to the grain, dry matter production decreased as a result.
Potassium deficiency great cause disease physiology, plant stunting, rods and weak, susceptible to
pests and diseases, high grain emptiness.
3.1.2.4. Calcium
Figure 11. Plot Nutrient Absorption Calcium (45 HST)

From the data, that the treatment varieties and dolomite liming-fertilization NPK interaction.
As for Figure 11 can be explained, that is combination treatment V2P1 V2P2 highs and lows.
Calcium (Ca) is a macro nutrients that plants need large enough, less than N and K, a similar
number to the P, S and Mg. Most Ca is located in the cell wall and membrane wall, the main functions
are outside the cytoplasm, its role in the metabolism slightly, into divalent bridge linking between
molecules and is reversible. Structural components of cell membranes, maintaining the stability and
integrity of cell membranes: regulate ion uptake selectivity, set vermeabilitas membrane and prevent
leakage of the solution. Structural components of cell walls, in the form of Ca-pektat in lamela middle
between adjacent cell walls serves to strengthen the cell walls and resistance to fungal infections, or
located between the cell wall with the plasma membrane, membrane function. Required in elongation
and cell division: cell wall and membrane form a cell wall and cell membrane new, this is a regulatory
function and structure functions as a reversible bond in the membrane and cell wall allows the cells to
grow and develop (Salisbury and Ross, 1995) ,
3.1.2.5. Magnesium
Based on the data, it appears that there is interaction between treatment varieties and dolomite-
calcification treatment NPK fertilizer. While from Figure 12, can be explained that a combination
Magnesium (Mg) is a secondary macro nutrients, plants need relatively large amounts, less
than N and K, a similar number with P, S and Ca, Mg generally <Ca. Essential for photosynthesis: be
the central atom of the chlorophyll molecule, the numbers 15-20% total Mg in plants. Structural
component of the ribosome: protein synthesis. Enzyme activity: the transfer of phosphate and
carboxyl groups, namely the reaction of ATP and energy transfer, CO2 fixation RuBP carboxylase
(Salisbury and Ross, 1995).
3.1.2.6. Fe
Figure 13. Plot Nutrient Uptake Fe (45 HST)

Based on the data, it appears that the treatment of variety and dolomite lime-treatment
interaction NPK fertilizer. While from Figure 13, can be explained that a combination treatment V5P1
highest and lowest V6P1.
Nutrients iron (Fe) is a micro elements are absorbed by plants in the form of Ferric ion (Fe 3+)
or Ferro (Fe 2+). Fe can be absorbed in the form of a chelate (bond metals with organic materials). Fe
chelate used is Fe-EDTA, Fe-DTPA and other chelate. Fe in about 80% of plants are found in
chloroplasts and sitolasma. The essence of this nutrient is as a prosthetic group of enzymes catalase
and peroxidase and as a constituent contained peredoxin role in chlorophyll (Salisbury and Ross,
1995).
3.1.2.7. Sulfur
Figure 14. Plot Nutrient Uptake Sulfur (45 HST)
From the data obtained, it can be explained that there is interaction between treatment varieties
and dolomite-calcification treatment NPK fertilizer. While in Figure 14, it appears that the
combination treatment V2P1 shows the highest and lowest V3P2.
S element can be lost because of the volatisasi (Dierolf et. Al., 2001). Further explained, that
the rice plant to absorb S about 7.2 Kg / ha. It shows that the land is already excess elements of S
which can be toxic to available will be transformed into sulfide (H2S). Reduction of Fe3 + to Fe2 +
precede SO42-, then Fe will always be found in the soil solution at the time of H2S is formed, so that
the H2S is converted into a soluble form FeS. The reaction can protect microorganisms and plants of
H2S poisoning. MenurutTisdale et. al. (1990) Sulfur serves as chloroplasts forming a close
relationship with photosynthesis and participating in various metabolic reactions, such as the
metabolism of carbohydrate, fat and protein, so that when photosynthesis goes well then fotosintat
generated too much, fotosintat this will then be accumulated in plant body. Fotosintat seeds in the
form of carbohydrates will have to be a rice cooking.
3.2. Research In The Field
3.2.1. Nutrient Uptake and Upper Part Roots Rice (45 HST)
3.2.1.1. Nitrogen

Based on the data obtained, that there is interaction between treatment varieties and dolomite-
calcification treatment NPK fertilizer. From Figure 15, it can be explained that a combination
treatment V6P3 the highest, while the lowest V1P0.
Nitrogen is the main macro nutrients required all plants in large quantities. N fertilization in
rice plants can increase production dikarekan pretumbuhan and can increase the number of tillers and
number of grain (Pathak et al, 2006). One of the functions of N in the plant is for the formation of
organic molecules in plants, such as amino acids, proteins, enzymes, nucleic acids and chlorophyll
(Barus, 2011). So Nitrogen is an element that is essential for the formation of proteins, leaves and
various other organic compounds. Nitrogen is absorbed by plants as NO3- and NH4 +, then put in all
the amino gas and protein. There is also the principal forms of nitrogen in the soil minerals, organic
nitrogen, joined with humus soil, Ammonium Nitrogen can be bound by certain clay minerals and
soluble Inorganic Ammonium and nitrate compounds.
Based on the results of soil analysis, that the soil total N content of 1.50% (very high). This is
because the high N total soil types used in this study is the acid sulphate soils peaty (Hystic
sulfaquents), with a depth of 38 cm peat. According Sariam and Khanif (2006) total N present in the
soil, the organic N (NO2 and NH3 +) and inorganic N (NO3- and NH4 +). N fertilization in addition
to increase the availability of nutrients N for rice plants as well as to lower the C / N ratio and to
speed up the decay of organic material indicates humufikasi process goes quickly and effectively
(Dahlan et al, 2008).
3.2.1.2..Fosfor
Figure 16. Plot Phosphorus Nutrient Uptake (45 HST)
From the data, it appears that the treatment varieties and liming treatment NPK-
fertilizer happen real influence on dolomite-calcification treatment NPK fertilizer. While in Figure 16,
can be explained that a combination treatment V2P4 highest and lowest V2P1.
Plants absorb phosphorus in the form of primary orthophosphate ion (H2SO4-) and
orthophosphate ion secondary (HPO42-). In addition, the P element can still be absorbed in another
form, namely forms firofosfat and metaphosphate, there is even a possibility of P absorbed by plants
dala form organic compounds that dissolve in water, such as nucleic acids and phitin. Phosphorus is
absorbed by plants in the form of inorganic ions quickly turned into an organic phosphorus
compound. Phosphorus is easy to move between cars or plant tissue. Optimal levels of phosphorus in
the plant during the vegetative growth was 0.3% - 0.5% of the dry weight of the plant. Based on the
results of soil analysis, soil P content in 71.95 (very high). The high content of P is suspected because
after land clearing, then burned and the land is often intruded at the time of high tide, so that the Na
content including very high (2.47 cmol (+) kg-1).
Said Zahra (2010), that will increase plant nutrient uptake in rice varieties with the provision
ameliorant materials (lime and fertilizer) dikarekan soil conditions become relatively better and is able
to increase nutrient uptake P. Therefore land used is acid sulfate peaty (38 cm), then the P uptake by
plants can be inhibited by salicylic acid and ferulic acid (Hartley and Whitehead, 1984 in Zahra,
2010).

3.2.1.3. Potassium
Figure 17. Plot Potassium Nutrient Uptake (45 HST)
Based on the data obtained, it appears that there is a real effect on the treatment of
calcification of dolomite-NPK fertilization, between the varieties and the treatment of dolomite-
calcification treatment NPK fertilizer. While in Figure 17, can be explained that a combination
Potassium (K) is an essential element to three after Nitrogen and Phosphorus. The role of K in
the plant as the carrier ion in the translocation of a number of nutrients, especially N, regulate
respiration, transpiration, piruvatkinase activation of enzymes involved in the synthesis of
carbohydrates, adjust the osmotic pressure. K is a high mobility gives the opportunity to move quickly
from one cell to another, or from the old network to the newly formed youth network and storage
organs (Zahra, 2010). Based on the results of soil analysis on the variable K is 1:01 cmol (+) kg-1
(high), is thought to be caused by burning of land and forests felled secondary. In addition at least
three times a year is experiencing huge tidal land, with a height of 30-50 cm of water from the soil
surface for approximately 24 hours with a quality-salty brackish water.
3.2.1.4. Calcium
Figure 18. Plot Calcium Nutrient Uptake
Based on the data obtained, it appears that there is a real effect on the treatment of
calcification of dolomite-NPK fertilization, between the varieties and the treatment of dolomite-
calcification treatment NPK fertilizer. While from Figure 18, can be explained that a combination
Ca element so no car in the plant, over a limited place of the old leaves to the growing, can
cause Ca deficiency at the point of growing roots and stems, Ca kekahatan can occur on land that has
a high Ca levels, especially if the rate of low transpirasinya , Symptoms kekahatan growing point
growth stunted stems and roots, the leaves on the lower transpirasinya. Land that has a high Ca can
inhibit uptake of other nutrients, may also cause kekahatan K and Mg. Calcium (Ca) together with
Magnesium (Mg) nutrients commonly referred to as lime. Calcium is important for plants, because
calcium is part of all plant cells. Based on the results of soil analysis, the content of Ca = 2.70 cmol
(+) kg-1 (low). This is caused by a lack of resources Ca on the ground and most of Ca can be leached
from plant litter, others undergo mineralization in the early stages of an overhaul of the material. The
presence of Ca minerals in the soil varies greatly. On rough-textured soil Ca levels lower when

compared with the betekstur finely ground. Ca levels are also low on the ground that has been
weathered Further, the surface of the soil may have lower levels of Ca due to its sour. Most Ca is
given into the soil are compounds to neutralize soil acidity, especially CaMgCO3 (Zahra, 2010).
3.2.1.5. Magnesium
Based on the data obtained, it can be explained that there was a real influence on dolomite-
calcification treatment NPK fertilization, between the varieties and the treatment of dolomite-
calcification treatment NPK fertilizer. Based on Figure 19, it appears that a combination treatment
V2P4 V2P1 highs and lows.
Magnesium (Mg) is required plants in relatively large amount, less than N and K, a similar
number with the P, S and Ca, Mg generally <Ca. Essential for photosynthesis, be the central atom of
the chlorophyll molecule, the amount of 15-20% total Mg in plants. Mg levels were higher in soil
inhibits the absorption of other cations, for example, resulted kekahatan K or Ca (Zahra, 2010). Mg
nutrient content in the soil based on soil analysis results of 0.88 cmol (+) kg-1 (low). The low content
of Mg Mg caused by a lack of resources in the soil and the soil immediately leached Mg peaty most of
the litter, the rest suffered mineralization at an early stage overhaul of the residue. Mg derived from
limestone used to neutralize the pH of the soil, especially in the form of limestone dolomite
(CaMgCO3).
Magnesium (Mg) absorbed by plants in the form of divalent cations Mg 2+. Mg 2+ is supplied
by mass flow and interception roots. Mg is absorbed by way of interception roots are much lower
when compared to the way the mass flow. Mg can easily be managed with dolomite liming, especially
on soils with low pH. Soil with a high K levels led to kekahatan Mg, because it inhibits the absorption
of Mg.
3.2.1.6. Sulfur
Figure 20. Nutrient Uptake Sulfur (45 HST)
From the data obtained, it appears that there is a real effect on the treatment of calcification of
dolomite-NPK fertilization, between the varieties and the treatment of dolomite-calcification

treatment NPK fertilizer. Based on Figure 20, can be explained that a combination treatment V2P4
V2P1 highs and lows.
Sulfur (S) required by plants in relatively high amounts, less than N or K, similar to P, Ca and
Mg, as a constituent of essential amino acids, 90% S in the form of plant proteins, disulfide bonds, the
structure of the protein and enzyme activity. The content of H2SO4 based on the results of soil
analysis 2.46%. Direct absorption of SO2 by a small number of leaves and roots for uptake mainly in
the form of sulfate (SO42-). In the soil sulfate move because of the mass flow and diffusion. Mainly
engaged as mass flow, diffusion has significance in soil with low levels of S. Levels in the soil
solution 5-20 ppm. Aras is sufficient for the plants 3-5 ppm in the soil (Zahra, 2010).
4. Conclusions
4.1. ANOVA results, for variable uptake roots and upper parts of the rice plant, almost all
highly significant, for the treatment of varieties and dolomite-fertilization NPK fertilizer
showed significant effect.
4.2. For research in plastic house and in the field, Variety Ringkak Janggut (local) showed the
highest uptake when compared with other varieties.
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