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Siti Nurul Aidil Fitri
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Journal : Journal of Tropical Soils

 1 
Increasing of Rice Yield by Using Growth Promoting Endophytic Bacteria from Swamp Land Fitri, Siti Nurul Aidil; Gofar, Nuni
JOURNAL OF TROPICAL SOILS Vol. 15 No. 3: September 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i3.271-276

Abstract

Increasing of Rice Yield by Using Growth Promoting Endophytic Bacteria from Swamp Land (SNA Fitri and N Gofar):  Swamp land has can be used as a paddy field that will be potential as a rice source However, this land has some limiting factors such as low fertility. On the other hand, continous used of inorganic fertilizer to improve soil fertility will also have some disadvantages. Therefore,  an alternative method as  fertilizers complement is needed.  Biofertilizer  is potential to be developed.  Previous research had succeeded to explore and selected some bacteria from rice tissues grown on swamp land.  That research had found two bacteria Consortium were named as Growth Promoting Endophytic Bacterial Consortium (GPEBC).  The aims of this research were (1) to evaluate the effect of a GPEBC population density and a level of N fertilizer on plant N absorption, and rice yield in the swamp soil, and (2) to find out the optimal population density of GPEBC and optimal dosage of N fertilizer on plant N absorption and rice yields in the swamp soil.  The research used a factorial completely randomized design with 3 factors and 3 replicates.  The first factor was a kind of GPEBC which consisted of Consortium A and consortium B.  The second factors was population density of GPEBC which consisted of 0 CFU mL-1, 107 cfu mL-1, 109 cfu mL-1, and 1011 cfu mL-1.  The third factor was N-fertilizer dosages which consisted of 50% of plant nitrogen necessity (equivalent to 57.50 kg N ha-1), 75% of plant nitrogen necessity (equivalent to 86.25 kg N ha-1), and 100 % of plant N necessity (equivalent to 115 kg N ha-1).  The research showed that GPEBC of the Consortium B had a better effect on rice yiels than Consortium A.  The population density of 107 cfu mL-1 of GPEBC increased the growth and the yield of rice grown on swamp soil. Treatment combination of 75% of plant N necessity, and 107 cfu mL-1 of population density produced the best production of Consortium B  (GPEBC) for rice grown on swamp soil.
Identification and Decomposition of Five Dominant Wild plants from Acid Swampland in South Sumatra Bernas, Siti Masreah; Wijaya, Andi; Parlindungan, Effendy Sagala; Fitri, Siti Nurul Aidil
JOURNAL OF TROPICAL SOILS Vol. 20 No. 3: September 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i3.149-155

Abstract

There were five emergence plants in swampland such as Polygonum barbatum, Neptunia prostrata, Phragmites karka, Ludwigia adscendens and Phragmites communis, which might be used for compost source, all the plants were easily adapted and grew very well on acid soil.  These plants were choosen because of abudancy and size. All plants were identified, collected, chopped and weighted then put in a 50 liters plastic drum for decomposting during 12 weeks. Composts temperature were monitored every week, nutrients content (N, P, K, Ca, Mg, Na) and compost chemical properties (C-organic, C.E.C., C/N ratio) were analysed every two weeks. Results showed that each compost from different plant varied in nutrients content and chemical properties.  Compost made of Neptunia prostata Lam. contained highest nutrients than others, it’s nutrients were N (4%), P (1675 mg kg-1), K (5.6 %), Ca (0.32 %), Mg (0.32 %) and Na (0.12 %) and the lowest nutrients content showed by compost of Phragmites karka Retz. in which N (2.4 %), P (1160 mg kg-1), K (2.62 %), Ca (0.04 %), Mg (0.07 %), and Na (0.03 %).  It seem broadleaf plants tended to have higher nutrients content than grasses or graminae. Neptunia prostrata compost had a high N content due to it’s leguminosae plant. Al and Fe were low in all composts, therefore all plants were recommended for organic nutrient sources. [How to Cite: Siti MB, A Wijaya, EP  Sagala  and SNA  Fitri. 2015. Identification and Decomposition of  Five Dominant Wild plants from Acid Swampland in South Sumatra. J Trop Soils 20: 149-155. Doi: 10.5400/jts.2015.20.3.149] 
The Influence of Phosphate Fertilizer and Plant Growth Regulators on the Growth and Yield of Ratoon Rice (Oryza sativa L.) Grown on Swampland Fitri, Siti Nurul Aidil; Bernas, Siti Masreah; Sodikin, Erizal; Wijaya, Andi; Apriadi, Ferra
JOURNAL OF TROPICAL SOILS Vol. 23 No. 2: May 2018
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2018.v23i2.73-80

Abstract

This research aimed to study the influence of phosphate fertilizer and plant growth regulator applications on the growth and yield of ratoon rice grown on swampland. The research was conducted in September 2016 to January 2017 at the greenhouse of Department of Soil Science, Faculty of Agriculture, Sriwijaya University. Soil characteristics were analyzed in the Laboratory of Chemistry, Biology and Soil Fertility, Department of Soil Science, Faculty of Agriculture, Sriwijaya University. The experiment was arranged in a factorial Completely Randomized Design.  The first factor was the phospate fertilizer dosages, i.e. 150 kg ha-1 (P1), 200 kg ha-1 (P2), 250 kg ha-1 (P3). The second factor was the plant growth regulator treatments, consisting of control (Z0), Cytokinin 20 ppm (Z1), Gibberellin 60 ppm (Z3). The results showed that the application of P fertilizer did not affect the yield and growth of ratoon rice. However, the application of Plant Growth Regulators resulted in a significant effect on the growth and yield of ratoon rice. The application of Plant Growth Regulator of Gibberellin with the dosage of 60 ppm was able to increase the percentage of filled grains (84.93%), decrease the percentage of empty grains (15.07%), increase the weight of 100 grains (3.63 g) and increase the dry weight of  milled grains (7.80 Mg ha-1). It is suggested that the treatment resulted in better plant growth and yield obtained in the current study might be recommended for ratoon cultivation in swampland.
Hubungan antara Kandungan Bahan Organik Tanah dengan Periode Pasca Tebang Tanaman HTI Acacia Mangium Willd. Sabaruddin, Sabaruddin; Fitri, Siti Nurul Aidil; Lestari, Lesi
JOURNAL OF TROPICAL SOILS Vol. 14 No. 2: May 2009
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2009.v14i2.105-110

Abstract

Relationship between the Organic Matter Content with Post Harvest Period of Forest Industrial Plant Acacia mangium Willd (Sabaruddin, S.N.A. Fitri, and L. Lestari): Timber harvesting may have significant effects on soil organic matter content through mechanical disturbance, inputs of logging slash, alterations in litter production, and leaching of dissolved organic matter, as well as the alteration of temperature and moisture regimes.  To investigate the effect of post-harvest period of tree harvesting on the dynamics of soil organic matter content, surface soils (0 to 10 cm and 10 to 20 cm) were collected from intact Acacia mangium Willd. plantation (control) and from A. mangium Willd. harvested in 2001, 2002, 2004, and 2006 in four replicates.  Each replicate consisted of composited 4 sub-samples.  Timber harvesting reduced litter accumulation on soil surface.  However, the amount of litter accumulated on soil surface increased as post-harvest period increased.  Timber harvesting significantly (p<0.001) affected soil organic matter content both in 0 to 10 cm and 10 to 20 cm.  The increases in soil organic matter content were significantly correlated (r=0.85; p<0.001 in 0 to10 cm and r=0.62; p<0.01 in 10 to 20 cm) with post harvest period.
Co-Authors A Napoleon Adhiguna, Rizky Tirta Alamsyah Pohan ANDI WIJAYA Andi Wijaya Apriadi, Ferra Dila Aksani Dwi Probowati Sulistiyani Edi Kurniawan Erizal Sodikin Lestari, Lesi Maria Fitriana NUNI GOFAR Parlindungan, Effendy Sagala Sabaruddin Sabaruddin Siti Masreah Bernas Siti Masreah Bernas Siti Masreah Bernas