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Journal : Soil REns

Analisa Usaha Tani terhadap Aplikasi Pupuk Majemuk Cair pada Tanaman Jagung Manis Oviyanti Mulyani; Emma Trinurani Sofyan; Rija Sudirja; Yulianti Machfud; Benny Joy
Soilrens Vol 17, No 1 (2019)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (588.364 KB) | DOI: 10.24198/soilrens.v17i1.23246

Abstract

Analysis of the farming system is an applied science which concerns on how to use resources efficiently and effectively in agricultural business in order to get maximum results. In this analysis, one of the important aspects on agricultural production is fertilizer. Liquid compound fertilizer is a fertilizer with several advantages such as simple application, complete and balanced required nutrients, labour and time efficient, and easy to procure and store. The purpose of this study was to determine the analysis of farming system on the application of liquid compound fertilizer on sweet corn. This experiment used a Randomized Block Design (RBD) consisted of 10 treatments (8 treatments of liquid fertilizer doses, one treatment of fertilizer dosage recommendations for NPK and one control (without fertilizer)). Each treatment was repeated three times, with the total of 30 experimental plots. The results of this experiment were the application of compound liquid fertilizer provides a high relative value of agronomic efficiency and profits on corn. The treatment of 1 ¼ NPK liquid fertilizer dose gave higher RAE, R/C and B/C values compared to the control. NPK liquid fertilizer has a significant effect on the variables of soil (pH, N, P and K content) and yield components (N, P and K uptake). In general, the use of NPK liquid fertilizer can significantly increase the yield, with the highest yield on 1 ¾ dose and the yield of corn plants (18,329 kg/ha).
Pengaruh Pupuk Kombinasi Urea – Zeolit - Arang Aktif (UZAA) terhadap pH, Eh, Amonium dan Nitrat pada Tanah Sawah Rancaekek, Kabupaten Bandung Restiana Maulinda; Maya Damayani; Benny Joy
Soilrens Vol 15, No 2 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.032 KB) | DOI: 10.24198/soilrens.v15i2.21459

Abstract

Urea is N fertilizer that often used by Indonesian’s famers. Zeolite and activated charcoal is known to be able to increase efficiency Nitrogen from urea fertilizer on paddy soils. This research was conducted to study the urea-zeolite-activated charcoal fertilizer combination for acidity (pH), Redox Potential (Eh) level, slow release NH4+ (ammonium) and NO3-(nitrate) on paddy soils. Experiment was carried out at greenhouse and experimental field, Departement of Soil Science and Land Resources Management, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor. The experimental design was Randomized Block Design consisted of five treatments and five replications. The treatments consisted of A (control), B (50% Urea + 25% Zeolite + 25% Activated charcoal), C (50% Urea + 45% Zeolite + 5% Activated charcoal), D (60% Urea + 40% Zeolite) and E (95% Urea + 5% Zeolite). Experimental result showed that the application zeolite and activated charcoal increased the pH and decreasead Eh level. Application of urea-zeolite-activated charcoal fertilizer (50%:45%:5%) is the best for slow release ammonium. This experiment showed that application of Urea-Zeolite-Activated Charcoal (UZAA) fertilizer could reduce the usage of urea fertilizer.Keyword: urea, zeolite, activated charcoal
Dinamika Kalium Tanah dan Hasil Padi Sawah (Oryza sativa L.) akibat Pemberian NPK Majemuk dan Penggenangan pada Fluvaquentic Epiaquepts Muhammad Imam Al Mu'min; Benny Joy; Anni Yuniarti
Soilrens Vol 14, No 1 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (571.461 KB) | DOI: 10.24198/soilrens.v14i1.9269

Abstract

This experiment aimed to find out the effect of application NPK compound and water regulation on soil potassium  and  yield  of  rice  (Oryza  sativa L.) on  Fluvaquentic  Epiaquepts.  This  experiment  was conducted  from  May to October 2015,  at  paddy field  of  Soil and  Water  Management,  Soil Science and Land Resources Department, Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang. The experiment was arranged in Randomized Block Design consisted of ten treatments and three replications.The treatment consisted of : Control, Waterlogged 5 cm; 150 kg NPK ha-1, Waterlogged 5 cm; 300 kg NPK ha-1, Waterlogged 5 cm; 450 kg NPK ha-1, Waterlogged 5 cm; 600 kg NPK ha-1, Waterlogged 5 cm; 750 kg NPK ha-1, Waterlogged; local recommendation, Intermittent irrigation each 1 day until waterlogged; 450kg  NPK  ha-1, Intermittent  irrigation  each 3  days until waterlogged;  450 kg  NPK ha-1,  and  Intermittent irrigation each 5 days until waterlogged; 450 kg NPK ha-1. The results showed that there was effect of soil *potassium  and  yield  of  rice on  Fluvaquentic Epiaquepts.  The treatment  of  750  kg  NPK  ha-1 that waterlogged 5 cm give the highest result of Total Potassium, it was around 281,95 mg.kg-1, available of Potassium  was  around  0,45  cmol+.kg-1  and  the  highest  yield  was  7,02  kg.square-1  or  equal about  9,95 ton.ha-1. Keywords : Postassium, Inorganic Fertilizer Compound, Waterlogged, rice (Oryza sativa, L.)
Pengaruh Organo-mineral Terhadap Beberapa Sifat Kimia Tanah dan Hasil Jagung pada Ultisol Jatinangor Rija Sudirja; Yuliati Machfud; Emma Trinurani Sofyan; Benny Joy; Santi Rosniawaty; Rani Ros
Soilrens Vol 16, No 1 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.203 KB) | DOI: 10.24198/soilrens.v16i1.18349

Abstract

The use of organic materials and minerals as fertilizer needs to be developed in order to increase agricultural productivity, especially in soils marginal that are widely distributed on the Indonesian. This study aims to determine the productivity of soil and corn plants by using various formulations of organo-mineral materials in the Ultisols Jatinangor. The experiment was conducted from April to November 2017 at Ciparanje Experimental Garden, Faculty of Agriculture, Universitas Padjadjaran, using a simple randomized block design consisting of 10 treatments and replicated 3 times. The organo-mineral ingredients used consist of a combination of Humic Acid (6; 8; 10 kg/ha); Dolomites (100; 150; 200 kg/ha); Natural Phosphates (250; 300; 350 kg/ha); also Zeolites (150; 200; 250 kg/ha). The results showed that ameliorant combination had significant effects on soil pH, P-available, and Mn Total, also the yield of maize. Dosage of 8 kg/ha of Humid Acids + 200 kg/ha of Dolomites + 350 kg/ha of Natural Phosphates + 250 kg/ha Zeolite, has indicated better result based on variable experiment.Keywords: maize, organo-mineral, Humic acid, dolomite, phosphate, ultisols
Pengaruh Beberapa Formula Pupuk UZAH Terhadap Ketersediaan N dan Kelarutan Cd dan Cr di Lahan Tercemar Limbah Industri Rija Sudirja; Benny Joy; Santi Rosniawaty
Soilrens Vol 14, No 2 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.808 KB) | DOI: 10.24198/soilrens.v14i2.11235

Abstract

Kerusakan ekosistem sawah akibat pencemaran limbah industri telah menurunkan produktivitas tanaman.  Penelitian ini bertujuan untuk menghasilkan produk pupuk tablet yang berfungsi menyediakan nutrisi bagi tanaman dan juga memiliki kemampuan mengatasi pencemaran di dalam tanah.  Bahan yang dijadikan komposisi formula pupuk tablet adalah urea, zeolit, arang aktif, dan kompos beragen hayati. Hasil percobaan menunjukkan bahwa penggunaan formula pupuk tablet berpengaruh nyata terhadap dinamika beberapa parameter kesuburan tanah dan logam berat.  Formula dari komposisi bahan urea, zeolit, arang aktif, dan kompos beragen hayati memberikan perbaikan nyata terhadap pH, KTK, NH4+, NO3-, dan N-total, serta menurunkan kadar logam berat Cd dan Cr di dalam tanah, jika dibandingkan dengan formula bahan urea dan kompos beragen hayati.  Formula A (60:20:10:10) merupakan pupuk tablet terbaik dalam mempengaruhi nilai pH dan KTK tanah, kandungan N total, NH4+, dan NO3-, serta menurunkan kadar Cd dan Cr di dalam tanah. Kata Kunci: tanah tercemar, pupuk tablet, nitrogen, logam berat, 
Perbandingan Respon Tanaman Terhadap Aplikasi Pupuk Majemuk: Analisis dan Temuan Utama Mulyani, Oviyanti; Joy, Benny; Remona, Rizkiyani
Soilrens Vol 22, No 1 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i1.57233

Abstract

The use of compound inorganic fertilizers in plant cultivation systems is on the rise because of their practicality, more comprehensive and homogeneous nutrient availability, and potential to reduce production costs. Different combinations of compound fertilizer products can generate a variety of responses in terms of plant growth. The aim of this investigation was to assess how plants responded to the components of their results, specifically the variations in two distinct compositions of compound fertilizers. This investigation divided 60 experimental sites into two groups, each using two distinct types of compound fertilizers. The macronutrient content of the compound fertilizers (NK and NP), distinguished them. This study employed nine treatments, which included a control (without fertilizer treatment), conventional NPK fertilizer, a combination of NPK fertilizers (3/4, and 1) doses with (1/2, 3/4, 1 and 1) doses of compound fertilizer, and a randomized block design Each treatment was repeated three times. The results of this study suggest that the application of compound fertilizer with two distinct compositions has a substantially different effect than the control treatment. In comparison to compound fertilizers with a higher potassium content, which have a yield component value of RAE 134%, the application of compound fertilizers with a higher phosphorus content can provide a higher yield component value of RAE 127.92%. The function of applying potassium-containing nutrients can produce better outcomes for corn plant than those with higher phosforus content, making it an interesting study that should be investigated further in the future
Respons N-Total, P-Potensial dan K-Potensial dan Hasil Jagung Manis (Zea mays saccharata Sturt) akibat Pemberian Pemupukan Pupuk Organik Remah dan NPK pada Tanah Inceptisol Sara, Dirga Sapta; Sofyan, Emma Trinurani; Joy, Benny
Soilrens Vol 22, No 1 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i1.57246

Abstract

Sweet corn is an agricultural commodity that has increasing market demand and high economic value. To achieve optimal production results, proper fertilization is very important, especially on Inceptisol soils that have low to medium fertility. This study aimed to evaluate the combination of crumb organic fertilizer and NPK fertilizer on soil N-total, P-potential, and K-potential as well as sweet corn crop yield. The experiment was conducted from September to December 2023 at the Experimental Field, Padjadjaran University, using Inceptisol soil, sweet corn seeds, crumb organic fertilizer, and NPK fertilizer (15-15-15). Randomized Group Design, six treatments including control, recommended dose of NPK fertilizer, and combination of crumb organic fertilizer with NPK, repeated 4 times. Analysis in the maximum vegetative phase at 55 HST with testing parameters including soil N-total (Kjeldahl method), P-potential (Bray method), K-potential (ammonium acetate method). The results showed that the combination of ¾ NPK and 1 ½ crumb organic fertilizer was effective in increasing soil N-total, P and K-potential and sweet corn yield.
Integrasi Kompos Kulit Kopi dan Biochar untuk Meningkatkan Kualitas Bibit Kopi Arabika Sara, Dirga Sapta; Tridakusumah, Ahmad Choibar; Joy, Benny; Sofyan, Emma Trinurani; Suriadikusumah, Abraham
Soilrens Vol 23, No 2 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i2.69715

Abstract

The application of organic amendments is an important strategy to improve seedling quality in coffee nurseries. This study aimed to evaluate the effects of coffee husk compost and biochar, appliedsingly and in combination, on the growth of Arabica coffee seedlings. The experiment was conductedin a nursery using polybags filled with 5 kg of growing media and arranged in a randomized completeblock design with seven treatments and four replications. The treatments consisted of a control, coffeehusk compost alone, biochar alone, and combinations of compost and biochar at different rates.Growth parameters observed included plant height, stem diameter, and number of leaves. The resultsindicated that all amended treatments significantly improved seedling growth compared to thecontrol. The best growth performance was consistently obtained from the combined application ofcoffee husk compost at 300 g polybag⁻¹ and biochar at 200 g polybag⁻¹, which produced the highestplant height, stem diameter, and leaf number. This treatment demonstrated a synergistic effectbetween coffee husk compost as a nutrient source and biochar as a soil conditioner that improved thegrowing media environment. These findings suggest that the combined use of coffee husk compost andbiochar at appropriate rates is an effective approach to enhance vegetative growth and overall qualityof Arabica coffee seedlings in nursery systems.
Peran Biochar-silika dan Pupuk Anorganik Tunggal dalam Meningkatkan Ketersediaan Fosfor dan Hasil Padi Sawah Muhammad, Fadlan Atalla; Rival, Rival; Citraresmini, Ania; Sofyan, Emma Trinurani; Joy, Benny
Soilrens Vol 23, No 2 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i2.69718

Abstract

Rice productivity in Inceptisols is often constrained by high phosphate fixation and low nutrient efficiency, despite high total nutrient reserves. This study aimed to evaluate the effectiveness of silicaenriched biochar in improving soil chemical properties and maintaining rice yield under reduced N, P, K fertilization. A field experiment was arranged in a Randomized Block Design with two factors: silicaenriched biochar (0, 1.25, and 2.5 t ha-1) and N, P, K fertilizer dosages (0, 50%, and 100% of the  recommended dose). Observed parameters included Cation Exchange Capacity (CEC), available phosphorus, total soil silica, and yield components. The results showed a significant interaction between treatments on soil chemical properties, particularly CEC and pH. Application of 2.5 t ha-1 silica-enriched biochar independently increased available phosphorus by 24.3% and total soil silica by 5.9% compared to the control, likely due to phosphate desorption mechanisms. Agronomically, while N, P, K fertilizer was the dominant factor for yield, the combination of 2.5 t ha-1  silica-enriched biochar  with 50% N, P, K dosage produced Milled Dry Grain (MDG) yields that were statistically comparable to the 100% N, P, K treatment. This indicated that silica-enriched biochar can substitute up to 50% of inorganic fertilizer requirements without compromised yield
Peranan Pupuk Magnesium–Sulfur (Kieserit) dalam Memperkuat Efisiensi Pemupukan NPK dan Produktivitas Jagung Manis pada Inceptisol Mulyani, Oviyanti; Sofyan, Emma Trinurani; Joy, Benny
Soilrens Vol 23, No 2 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i2.69712

Abstract

Modern agriculture largely depends on NPK fertilization however, the neglect of secondary nutrients, particularly magnesium (Mg) and sulfur (S), has increasingly led to nutrient imbalances andreduced fertilizer efficiency. Magnesium plays a crucial role in photosynthesis, energy transfer, andenzyme activation, and its deficiency often referred to as the “forgotten element” has become moreprevalent in intensive cropping systems and leached mineral soils. This study aimed to evaluate therole of magnesium–sulfur (Mg–S) fertilizer derived from kieserite in enhancing the growth and yieldof sweet corn (Zea mays saccharata L.) cultivated on Inceptisol soil. This study used a RandomizedBlock Design (RBD) with seven different combination treatments between kieserite (½; ¾; 1; 1 ½ andNPK (¾ and 1) recommended dosages, one treatment recommendation dose of local farmer and onetreatment without fertilizer for comparison. Each treatment was replicated three times, resulting in atotal of twenty-seven experimental plots. Soil chemistry parameters as a main object of thisexperiment. The results of this study showed that the application of kieserite inorganic fertilizersignificantly improved N, P, K, and Mg concentrations in plant tissue, increased total soil Mg content,and enhanced yield components of sweet corn compared to the control and standard NPK treatments.The combined application of one dose of kieserite (300 kg ha⁻¹) and the recommended NPK rate (350–100–50 kg ha⁻¹) produced the highest yield, reaching 14.24 t ha⁻¹, indicating that balanced Mg–Ssupplementation is essential for optimizing nutrient efficiency and maximizing sweet cornproductivity on Inceptisol soils.