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All Journal Journal of Tropical Soils AGRIKA JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Contributions of Central Research Institute for Agriculture
Retno Suntari
Brawijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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DETERMINATION OF UREA-HUMIC ACID DOSAGE OF VERTISOLS ON THE GROWTH AND PRODUCTION OF RICE Suntari, Retno; Retnowati, Rurini; Soemarno, Soemarno; Munir, Mochammad
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The main problem of the use of N fertilizer in paddy soil Vertisols is the low efficiency. Urea-humic acid applications at certain dosage are believed to increase rice growth and production. This study was aimed to examine the effect of urea and urea-humic acid to the amount and form of N-available, N uptake, plant growth, and the production of rice. Five dosage levels of urea-humic acid were applied for rice on Vertisols. Results of the research showed that the urea-humic acid fertilizer could increase the content of N-NH4+ soil at 28 days and N-NO3- soil at 42 days. The urea-humic acid could improve plant height, number of tillers, and total dry weight. The highest rice production is achieved by 100% humic acid-urea, especially on parameters of dry weight effectively harvested and effectively milled, with 5.56 tons and 4.61 tons per hectare respectively. Correlation between soil N-NO3- level with soil N-NH4+  level was significant at p = 0.05 (r = 0.871). Efficiency of urea-humic acid fertilizer at 100% recommended dosage (200 kg urea-humic acid) to the dry weight of  effectively harvested crop with dry weight of effectively milled crop was 22% compared to the recommended urea fertilizer (200 kg ha-1).Keywords: N-NH4+, N-NO3-, plant growth, the production of rice, urea-humic acid
Improving nutrient availability in pyroclastic materials from Mount Kelud using organic and inorganic amendment Sri Rahayu Utami; Retno Suntari; Christanti Agustina; Novalia Kusumarini
Journal of Degraded and Mining Lands Management Vol 7, No 1 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2019.071.1987

Abstract

Pyroclastic materials from Mount Kelud eruption which deposited in surrounding areas has very low nutrient availability. Fertilizer efficiency is normally low due to a coarse texture. This research was an attempt to increase nutrient availability using zeolite and organic matter in combination with inorganic fertilizers. The materials was treated with three rates of inorganic fertilizers (100%, 70%; 40% of the recommended rates, i.e. Urea 400 kg/ha; SP-36 150 kg/ha, and KCl 75 kg/ha), in combination with three types of amendments (zeolite, Tithonia diversifolia leaves, and cow manure at the rate of 20 t/ha), and 100% inorganic fertilizer treated materials as control, and incubated for 60 days. Soil samples were taken every 10 days after incubation and analysed for soil pH, C-organic, available N, P, K content measurement. The results showed that total N content increased with the rates of inorganic fertilizers. At 10-20 days after incubation the content of NH4+ is greater than NO3- but gradually changed after 30 days after incubation. Apparently, zeolite treated materials had lower NH4+ content than organic treated samples at 10-20 days after incubation, however at 60 days after incubation its NO3- content was relatively higher than Tithonia leaves treated samples. At 60 days after incubation, the higher the fertilizer rates, the higher the content of available P and exchangeable K. The highest content of available P and exchangeable K occurred respectively in cow manure and Tithonia diversifolia leaves treated materials. Until 60 days after incubation, organic treated materials had a higher amount of available and exchangeable K than zeolite treated materials, because they originally contain considerable P and K. However, at 60 days after incubation, zeolite treated materials contained the highest amount of NO3-. This indicated that zeolite had a higher capability to retain mineral N, hindering N removal from leaching and volatilization. A higher nutrient holding capacity could be related to the increasing cation exchange capacity after the addition of amendments, and to a lesser extend to pH and % C.
Utilization of Tithonia diversifolia and sugarcane leaves to improve soil properties and plant growth on a sandy soil of Malang, East Java Yulfita Farni; Retno Suntari; Sugeng Prijono
Journal of Degraded and Mining Lands Management Vol 9, No 2 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.092.3227

Abstract

A study on the addition of organic matter of different qualities was carried out to improve plant growth on a degraded sandy soil of Bambang Village, Wajak Malang, East Java. Two potential sources of organic matter in Bambang Village are Tithonia diversifolia and sugarcane leaves. This study aimed at elucidating the changes in some chemical properties of a degraded sandy soil of Malang, East Java, and nutrient uptake and growth of maize plants by applying mixtures of Tithonia diversifolia and sugarcane leaves of different quality. Treatments tested in this study were mixtures of Tithonia diversifolia leaves and sugarcane leaves at various proportions (%w/w), i.e. 100% Tithonia diversifolia leaves (T1), 100% sugarcane leaves (T2), 75% Tithonia diversifolia leaves + 25% sugarcane leaves (T3), 50% Tithonia diversifolia leaves + 50% sugarcane leaves (T4); without organic matters (T6), and control, without organic matter and inorganic fertilizers (T7). The results showed that the application of Tithonia diversifolia and sugarcane leaves affected soil pH, soil exchangeable bases, maize growth, and nutrients uptake. Nutrients taken up by maize plants significantly increased with the addition of Tithonia diversifolia leaves, either alone or in combination with sugarcane leaves. The application of 100% sugarcane leaves did not significantly affect maize growth and nutrient uptake.
DETERMINATION OF UREA-HUMIC ACID DOSAGE OF VERTISOLS ON THE GROWTH AND PRODUCTION OF RICE Retno Suntari; Rurini Retnowati; Soemarno Soemarno; Mochammad Munir
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015): JUNE
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v37i2.505

Abstract

The main problem of the use of N fertilizer in paddy soil Vertisols is the low efficiency. Urea-humic acid applications at certain dosage are believed to increase rice growth and production. This study was aimed to examine the effect of urea and urea-humic acid to the amount and form of N-available, N uptake, plant growth, and the production of rice. Five dosage levels of urea-humic acid were applied for rice on Vertisols. Results of the research showed that the urea-humic acid fertilizer could increase the content of N-NH4+ soil at 28 days and N-NO3- soil at 42 days. The urea-humic acid could improve plant height, number of tillers, and total dry weight. The highest rice production is achieved by 100% humic acid-urea, especially on parameters of dry weight effectively harvested and effectively milled, with 5.56 tons and 4.61 tons per hectare respectively. Correlation between soil N-NO3- level with soil N-NH4+  level was significant at p = 0.05 (r = 0.871). Efficiency of urea-humic acid fertilizer at 100% recommended dosage (200 kg urea-humic acid) to the dry weight of  effectively harvested crop with dry weight of effectively milled crop was 22% compared to the recommended urea fertilizer (200 kg ha-1).
PEMANFAATAN BEBERAPA BAHAN PELAPIS PADA UREA TERHADAP NITROGEN TERSEDIA DAN SIFAT KIMIA DI VERTISOL PASURUAN Muhammad Salman; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 10 No. 1 (2023)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.995 KB) | DOI: 10.21776/ub.jtsl.2023.010.1.5

Abstract

Vertisols have a comparatively low total N content till they are needed, so they need extra external fertilizers within the sort of fertilizers. The coating is one methodology for making fertilizer within the sort of slow-release. The aim of this study was to analyze the impact of zeolite, sago, a mixture of chitosan, and potato flour as a coating for urea fertilizer on the provision of available N and also the chemical properties of Vertisols Pasuruan. This study used a completely randomized design (CRD) with 6 treatments consisted of K (no coating), P1 (zeolite 10%), P2 (sago 2%), P3 (chitosan 3% : potato starch 8%), P4 (zeolite 20%), P5 (sago 4%) and P6 (chitosan 6% : potato starch 6%) with 3 replicates. The results showed that the application of several coating materials on urea had a significant effect on the rate of nitrogen release in the form of ammonium and nitrate from week 1 to week 4. P6 (chitosan 6%: potato starch 6%) treatment showed the lowest results in the release rate of ammonium by 12.517 ppm, which was categorized as high and nitrate by 3.005 ppm, which was categorized as low. The urea coating treatment resulted in lower ammonium and nitrate than the uncoated treatment. The application of several coating materials on urea had a significant effect on the pH value of the soil and cation exchange capacity (CEC). The P6 treatment showed the highest result on the soil pH of 5.363 and CEC values of 41.878 me 100 g-1.
The role of humic acid from various composts in improving degraded soil fertility and maize yield Niken R Wandansari; Soemarno Soemarno; Retno Suntari; Syahrul Kurniawan
Journal of Degraded and Mining Lands Management Vol 10, No 2 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.102.4245

Abstract

Humic acids play a crucial role in ion exchange and metal ion complexes; therefore, they are potentially useful in improving soil fertility and crop yield. This study aimed to explore the role of humic acid (HA) from various composts in improving degraded soil fertility and maize yield. A field experiment was conducted on Inceptisols having low soil organic carbon, nitrogen and available phosphorus contents. Eight treatments of HA formulas and one control were arranged in a randomized block design with three replications. The HA formulas used were combinations of two doses of HA (0.15 and 0.20% of soil on w w-1 base) and four types of HA (HA extracted from bagasse compost, HA extracted from water hyacinth compost, HA extracted from market waste compost, and commercial HA). The results showed that the HA application increased 16-97% of soil organic carbon, total nitrogen, available phosphorus, exchangeable potassium and calcium compared to the control. The formula of commercial HA at 0.15% was the best treatment for inhibiting soil fertility degradation in agricultural land. The best maize yield of 15.13 t ha-1 and starch content of 63.54% was obtained from the application of commercial HA at 0.20%.
PENGARUH DOSIS BERBAGAI SUMBER PUPUK KALSIUM TERHADAP PERTUMBUHAN AWAL TANAMAN NANAS DI PT. GREAT GIANT PINEAPPLE LAMPUNG Arin Novitasari; Retno Suntari; Priyo Cahyono
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 1 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.287 KB) | DOI: 10.21776/ub.jtsl.2019.006.1.5

Abstract

Characteristic of Ultisol in PT. Great Giant Pineapple is very acidic soil and low of macro and micro nutrient content. This condition can be solved by liming so pineapple plant can growth optimally. There are many material of lime with different shape and size. The purpose of this study was to analyze calcium source with the right doses that can increase pH, provide nutrient available and decrease any toxic elements. This study used a completely randomized design with 18 treatments. The treatment included D0, C0, T0 (control), dolomite with 1, 2, 3, 4 and 5 t ha-1 doses (D1, D2, D3, D4, D5), Granular Calcite with doses of 100, 200, 300, 400, and 500 kg ha-1 (C1, C2, C3, C4, C5) and Suspension of Calcite with doses of 75, 100, 125, 150, 175 L ha-1 (T1, T2, T3, T4, T5). The results showed that application of calcium sources had significant effect on soil pH, Al saturation, Fe available, exchangeable-Ca, exchangeable-Mg, CEC, Base Saturation, available-P, total-N, and exchangeable-K in several time of observations. Application of 5 t dolomite ha-1 increased soil pH, and decreased Al saturation and available-Fe, and it also increased Ca and Mg contents. However, application of dolomite had no significant effects on N, available-P and exchangeable-K at several time of observations. The initial growth parameter was not significantly affected by application of dolomite.
EFEK APLIKASI KOMPOS SAMPAH DAN KOTORAN KAMBING TERHADAP SERAPAN UNSUR HARA KALIUM DAN HASIL TANAMAN BAWANG MERAH PADA TANAH TERDAMPAK ERUPSI GUNUNG KELUD Bagas Septya Pradana; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 1 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.396 KB) | DOI: 10.21776/ub.jtsl.2019.006.1.8

Abstract

The soil containing volcanic ash from Mount Kelud was contain nutrients in the form that was not available for the soil, so that the soil diffficult to process. One of the efforts to solve that is by organic matter application that can improve availability of nutrient in the soil and improve plant growth. The purpose of this study was to evaluate the effect of compost application on potassium uptake, and yield of onion on Mount Kelud eruption-impacted soil. This study used a randomized block design with five treatments and three replications. The treatments tested were K0 = 100% inorganic fertilizer; K1= 100% goat manure compost; K2= 100% garbage compost; K3= 50% inorganic fertilizer + 50% goat manure compost; and K4= 50% inorganic fertilizer + 50% garbage compost. The results showed that application of waste compost and goat manure compost significantly affected sodium uptake, but it did not significantly affect potassium uptake compared to inorganic fertilizer application. Furthermore, application of waste compost and goat manure compost significantly affected plant height  and number of leaves, but it did not significantly affect number of tillers, number of bulbs, diametre of bulbs, fresh weight of bulbs and dry weight of bulbs of red onion plant, compared to inorganic fertilizer application. Application of 20 t goat manure compost ha-1 gave the highest number of leaves (67), and plant height (49.77 cm).
PENGARUH APLIKASI KOMPOS AMPAS KOPI TERHADAP PERUBAHAN SIFAT KIMIA ANDISOL NGABAB, KABUPATEN MALANG Wenry Siahaan; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 1 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.548 KB) | DOI: 10.21776/ub.jtsl.2019.006.1.11

Abstract

Application of spent coffee ground compost is expected to improve soil chemical properties of Andisol Ngabab which has low C-organic and N contents, very low P content, and moderate content of Na content. The purpose of this study was to explore the effect of application of Robusta spent coffee grounds compost application on soil chemical properties of an Andisol. This study used a completely randomized design with five treatments and three replications. The treatments tested were P0 (control, without application of spent coffee ground compost), P1 (50% dose of spent coffee ground compost aplication = 10 t ha-1), P2 (100% dose of spent coffee ground compost application = 20 t ha-1), P3 (150% dose of spent coffee ground compost application = 30 t ha-1), and P4 (200% dose of spent coffee ground compost application = 40 t ha-1). The results of this study showed that the application of spent coffee ground compost with a dose of 150%= 30 t ha-1 (P3) and dose of 200%= 40 t ha-1 (P4) on an Andisol of Ngabab significantly increased pH, organic-C, total-N, available-P, exchangeable-K (in 2, 6 and 8 weeks), exchangeable-Na, and CEC (in 4, 6 and 8 weeks) compared to control treatment or without application of spent coffee ground compost (P0).
PENGARUH RESIDU UREA DAN KOMPOS DENGAN APLIKASI KOMPOS KOTORAN KAMBING TERHADAP SIFAT KIMIA TANAH DAN PERTUMBUHAN TANAMAN OKRA PADA TANAH TERDAMPAK LETUSAN GUNUNG KELUD Akhmad Sihab Ulumuddin; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 1 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.996 KB) | DOI: 10.21776/ub.jtsl.2019.006.1.19

Abstract

A study that was aimed at elucidating the effect of Urea and compost residue with application goat manure compost on soil chemical properties and growth of Okra (Abelmoschus esculentus) on soil impacted by eruption of Mount Kelud, was conducted in a glasshouse. Treatments tested in this study were applications of residue urea and compost with application of goat manure (1/3 weight planting media) A1: 2/3 residual soil (100% urea); A2: 2/3 residual soil (100% poultry manure compost) A3: 2/3 residual soil (100% cow manure compost); A4: 2/3 residual soil (50% urea + 50% poultry manure compost); A5: 2/3 residual soil (50% urea + 50% cow manure compost). The five treatments were arranged in a completely randomized design with three replicates.  The results showed no significant effect on soil chemical properties of pH, C-organic, and CEC of the Mount Kelud eruption-impacted soil at 4 and 8 weeks after incubation (WAI), except for C/N ratio at 4 WAI. However, urea and compost residues with application goat manure had significant effect on plant height at 4, 6, and 8 weeks after planting (WAP), and number of leaves at 8 WAP. A3 (2/3 residual soil 100% cow manure compost + 1/3 goat manure) gave the highest number of leaves (13) at 8 WAP, and A5 (2/3 residual soil 50% urea + 50% cow manure compost + 1/3 goat manure), and gave the highest of plant height respectively with 28,83 cm; 47,33 cm; 55,17 cm at 4, 6, and 8 WAP.
Co-Authors Agustina, Christanti Aisyah Hairani Aulia Akhmad Sihab Ulumuddin Al Azizu Saifulloh Ania Citraresmini Ania Citraresmini Arin Novitasari Arumita Rohmah Aryo Gilang Maudyansa B Baswarsiati Bagas Septya Pradana Balqis Noor Hanifah Devid Khoirul Mukhtar Hadi Wijaya Diva Ariella Herhandini Geraldine Abel Mochammad Munir Muhammad Abdi Guna Wiyahya Muhammad Salman Niken R Wandansari Novalia Kusumarini Priyo Cahyono Raditya Luh Madyaratri Revaldy Andika Rurini Retnowati Rurini Retnowati S Sutopo S Syekhfani Sekar Mariam Hapsari Soemarno Soemarno Soemarno Soemarno Soemarno Soemarno Sri Rahayu Utami Sugeng Prijono Syahrul Kurniawan Ursulin Sacer Setyastika Wenry Siahaan Yulfita Farni Zaenal Kusuma zenny faridatus sa'diyah