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All Journal Jurnal Ilmu Ternak Journal of Degraded and Mining Lands Management Jurnal Entomologi Indonesia Soil REns Jurnal Agro Wiralodra
Sandrawati, Apong
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Veterinary

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Aplikasi Pupuk Cair Plus Silika Dengan Pupuk Anorganik N,P,K Terhadap Pertumbuhan dan Hasil Tanaman Padi (Oryza Sativa L.) Pada Inceptisol Jatinangor Solihin, Eso; Sandrawati, Apong; Kurniawan, Wawan; Maulana, Haris; Mutaqin, Zaenal
Jurnal Agro Wiralodra Vol 4 No 2 (2021): Jurnal Agro Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/agro wiralodra.v4i2.70

Abstract

This experiment aims to determine the effect of various concentrations of liquid fertilizer plus silica combined with N, P, and K inorganic fertilizers on the growth and yield of rice plants (oryza zativa). The trial was conducted in July 2018 to November 2018 in the Ciparanje experimental garden of the Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang. The method used is Randomized Block Design (RBD) which consists of ten treatments with three replications; Treatment (A) Control, (B) standard NPK, (C) Plus Silica Liquid Fertilizer, (D) ¼ NPK + Silica Plus Liquid Fertilizer, (E) ½ NPK + Silica Plus Liquid Fertilizer, (F) ¾ NPK + Liquid Fertilizer Silica Plus, (G) NPK + Silica Plus Liquid Fertilizer, (H) ¾ NPK + ¼ Silica Plus Liquid Fertilizer, (I) ¾ NPK + ½ Silica Plus Liquid Fertilizer, (J) ¾ NPK + ¾ Silica Plus Liquid Fertilizer. The results showed that there was an effect of silica fertilizer on the growth and number of tillers after rice 8 MST. The treatment of F (¾ NPK + Liquid Fertilizer Plus Silica) gave the highest value to the yield of rice plants with the results of 53.31 gr of crop.
The diversity and ecological roles of insects and arachnids in arabica coffee (Coffea arabica) plantation in Palasari, Bandung Regency: Keanekaragaman dan fungsi ekologis serangga dan arachnida pada ekosistem kopi arabika (Coffea arabica) di Palasari, Kabupaten Bandung Maharani, Yani; Dewi, Ajeng Putri Kusuma; Rasiska, Siska; Hutapea, Dedi; Maxiselly, Yudithia; Sandrawati, Apong
Jurnal Entomologi Indonesia Vol 21 No 1 (2024): March
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.1.54

Abstract

The diversity of arthropod communities is often used as a bioindicator of environmental changes, specifically in coffee farms with various management systems. Significant impacts of the environmental changes lead to alterations in the community structure and function of arthropods. The aim of this research was to determine the diversity and ecological roles of insect and arachnids in arabica coffee plantations in Bandung Regency. Sampling was conducted on five plots measuring 100 m2 each, with a separating distance of 50 m, in coffee farms located in Legok Nyenang Village, Bandung Regency. This was performed five times per weekly intervals using sweep nets, yellow tray traps, and beating sheets. Subsequently, collected samples were identified based on morphological characters at the Pest Laboratory, Faculty of Agriculture, Padjadjaran University. A total of 269 insects species (11 orders and 98 families, total 669 individuals) and 23 species of Arachnida (one order and 13 families, total 44 individuals) were found, The most abundance of natural enemies were the parasitoid, Megacampsomeris prismatica (Hymenoptera: Scoliidae) and the predator, Tetragnatha sp. (Araneae: Tetragnathidae). Meanwhile, the ecological function of the group with the lowest number was pollinators (Hymenoptera: Apidae). Although the diversity of insects and arachnids species found in coffee farms was high (H' = 5.10), the evenness and dominance index were relatively low. These results showed the potential of coffee plantations as ecosystems for conserving predatory arthropods biodiversity. Consequently, coffee cultivation practices and pest management strategies must prioritize the protection of beneficial insects such as natural enemies and pollinators.
Soil properties of overburden and topsoil in limestone mining area: A preliminary study Hindersah, Reginawanti; Mauludy, Noor Muhammad; Sumbada, Rifyal Achmad Rivaldi; Sandrawati, Apong; Arifin, Mahfud
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6705

Abstract

Limestone mining removes topsoil and produces overburden piles, which is improper for plant growth. The objectives of this study were to compare the texture, certain chemical properties, and bacterial population of overburden to the topsoil and to observe the effects of compost amendment on the growth of corn seedlings on the potted overburden. The overburden characterization was performed using a quantitative descriptive method with purposive sampling. Samples were taken from a 6-month-old overburden pile and a pine-vegetable agroforestry ecosystem. The data were further analyzed by using the Student’s t-test. A bioassay was set up in                            a randomized block design with various concentration compost treatments and five replications. The results showed significant differences between texture, chemical characteristics, and bacterial counts of overburden and topsoil were recorded. The topsoil was more acidic and had higher organic carbon, potential phosphorus, potential potassium, and cation exchange capacity, while the overburden had higher levels of calcium; however, the total N and Magnesium content in topsoil and overburden was similar. The bacterial population of the overburden was lower than in the topsoil. A total of 16 gram-negative and one gram-positive bacteria have been identified from both samples. Applying huge amounts of compost enhanced corn seedlings' growth in the overburden. The study suggested that overburden was more unfertile compared to the topsoil. Therefore, the improvement of overburden properties by compost amendment is needed to green the area.
Pengaruh Perubahan Iklim Terhadap Produksi Tanaman Kentang. Studi kasus: di Lembang, Jawa barat Anindita, Sastrika; Arifin, Mahfud; Sandrawati, Apong
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.v22i1.57249

Abstract

The potential impacts of global warming on agricultural production warrant careful consideration, as they could pose threats to food security. This study aims to evaluate the effects of global warming on potatoes in the Lembang region, West Java, where is renowned for its horticultural production. We used climate data taken from Coordinated Regional Climate Downscaling Experiment for Southeast Asia (CORDEX-SEA), using MPI-ESM-LR_REMO2015 model under the Representative Concentration Pathway (RCP8.5) scenario. Addititionally, potato crop yield was simulated Ausing Aquacrop software. The results showed that the potential yield under the influence of climate change increased potato yield by 16%. The study identified that the increase of temperature in Lembang has positive impact on potato production
Pengaruh Pupuk N Bio-organomineral terhadap pH, Nitrat, C-organik, Kandungan Pb Tanah dan Serapan Pb Tanaman Padi (Oryza sativa L.) pada Sawah Tercemar Limbah Tekstil Sudirja, Rija; Masruri, Muhammad Kholil; Suryatmana, Pujawati; Rosniawaty, Santi; Kamaluddin, Nadia Nuraniya; Sandrawati, Apong
Soilrens Vol 21, No 2 (2023)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v21i2.53453

Abstract

Lead pollution in rice fields in Rancaekek is attributed to the inadequate processing of waste from the textile industry. This phenomenon engenders a decline in soil fertility, thereby posing a threat to both food quality and agricultural sustainability. Employing N Bio-Organomineral fertilizer stands as one of the measures aimed at ameliorating the quality of rice fields afflicted by heavy metal contamination, particularly lead (Pb). This study seeks to elucidate the impact of N Bio-Organomineral fertilizer on various soil parameters, namely pH, NO3 - , soil organic carbon (C-organic), soil Pb solubility, and plant Pb uptake. The research was conducted in Linggar Village, Rancaekek, spanning from December 2019 to April 2020. Utilizing a Randomized Block Design as the experimental setup consisted of eight treatments with four replications, including: a control (0), urea at 250 kg/ha, and varying doses of the fertilizer at 250, 500, 750, 1000, 1250, and 1500 kg/ha. N Bio-Organomineral fertilizer represents a modified form of nitrogen fertilizer comprising urea, zeolite, activated charcoal, and compost enriched with Bacillus subtilis, formulated in a ratio of 60:20:10:10, respectively. The findings indicate that the application of N Bio-Organomineral fertilizer leads to an augmentation in soil NO3 - and C-organic content, while concurrently mitigating the uptake of Pb by plants. Among the treatments, the application of 500 kg/ha of N Bio-Organomineral fertilizer emerges as the most efficacious in enhancing soil NO3 - and C-organic content, as well as diminishing Pb accumulation in plants
Pengaruh pupuk N Bio-organomineral terhadap pH, NO3-, C-organik, Na-dd, kandungan Pb tanah dan serapan Pb padi (Oryza sativa L.) pada sawah tercemar limbah tekstil Sudirja, Rija; Masruri, Muhammad Kholil; Suryatmana, Pujawati; Rosniawaty, Santi; Kamaluddin, Nadia Nuraniya; Sandrawati, Apong
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.v22i1.57231

Abstract

Lead (Pb) heavy metal pollution on rice fields in Rancaekek is caused by the disposal of textile industry waste which is not perfectly processed. The impact is a decrease in soil fertility which can threaten the food quality and agricultural sustainability. The application of N Bio-Organomineral fertilizer is one of the efforts to improve the quality of rice fields polluted with heavy metals Pb and high Na content. This research aims to find out the effect of N Bio-Organomineral fertilizer on pH, NO3-, Na, C-organic soil, solubility of soil Pb and uptake of plants Pb. The experimental design used a Randomized Block Design (RBD) with eight treatments and four replications consisting of: 0 (control); urea 250 kg/ha; and the variation in the dose of fertilizer is 250; 500; 750; 1000; 1250; 1500 kg/ha. N Bio-Organomineral fertilizer is a modification of N fertilizer based on urea, zeolite, activated charcoal and compost enriched with Bacillus subtilis with formulation 60:20:10:10. The results showed that the application of N Bio-Organomineral fertilizer could increase the NO3- and C-organic content of the soil and reduce the Na-dd and Pb uptake of plants. Treatment of 500 kg/ha N Bio-Organomineral fertilizer was the best dose in increasing the NO3- and Corganic content of the soil and reducing Na-dd and Pb uptake of plants
Investigation of Lithologic Discontinuities Phenomenon in Andisols derived from Mt. Patuha Devnita, Rina; Arifin, Mahfud; Sandrawati, Apong
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.v22i1.57238

Abstract

Lithologic discontinuity reflects the distinct change between different types of soil layers that can occur due to various geological process, resulted in variation composition, colour, texture, organic matter, consistency, structure, and others characteristics. Soils derived from volcanic eruption have the possibility to have lithologic discontinuity in the depth of the soil profiles due to the different eruption that formed the soils. Soils developed from the eruption of Mt. Patuha were investigated whether lithologic discontinuity presence the soil layers. The research used descriptive and comparative method of two profiles, analysed the soil macro-morphology and soil laboratory analyses covered colour, organic carbon, texture, consistency and structure. The result showed that the unusual pattern distributed of colour, organic matter, consistency, structure indicated the lithologic discontinuities of the underlying 2Ab (A buried) horizon to the overlying horizon. The darker colour, higher organic matter content, friable consistency in 2Ab in deeper depth, were some indications of lithologic discontinuities, where in soil without lithologic discontinuities the deeper depth or horizon was normally lighter colour, lower organic matter content and firmer consistency. However, detailed analysed with instruments like XRF and VIS DRS are needed to have the precise elemental composition in every horizon which conclude the horizon from the same or different parent materials.
Land Suitability and Economic Feasibility Analysis of Peanuts (Arachis hypogaea) in Jatinangor Subdistrict, West Java Province Devnita, Rina; Solihin, Muhammad Amir; Sandrawati, Apong; Sitorus, Hasnan Pratama
Soilrens Vol 22, No 2 (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.v22i2.61720

Abstract

Jatinangor Subdistrict in West Java Province has potentiality to be grown by peanuts (Arachishypogaea) due to the proper climate and the quite spacious availabity land. The farmers in this areaare also used to grow this legume and the demand for this commodity increases by years. The objectiveof this study was to evaluate actual land suitability classes and economic feasibility of peanuts inJatinangor Subdistrict. The methodology using survey method following by sampling and laboratoryanalyses to evaluate land suitability. The assessment used matching table considering the limitingfactor for evaluating land suitability. The economic feasibility using R/C ratio (Revenue Cost Ratio).The results showed that the actual land suitability class for peanuts class S3 (Marginal Suitable) withthe limiting factors of water availability, organic carbon content and slope. Non suitable also foundwith limiting factors of coarse material and slope. The R/C ratio for peanuts was 1.52, indicating thatpeanuts were feasible and profitable to cultivate in Jatinangor Subdistrict.
Karakteristik Tanah Andisol Pasca Konversi Lahan Hutan Menjadi Semak Anindita, Sastrika; Sandrawati, Apong; Arifin, Mahfud; Devnita, Rina
Soilrens Vol 22, No 2 (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.v22i2.61737

Abstract

Land use conversion can affect characteristics of soil and also soil quality. The present study evaluate theimpact of land use conversion from pine forest to bush in tropical volcanic soils in Indonesia. We comparedtwo soil profiles from the same areas (uphill slope of Mt. Tangkuban Perahu) and analysed theirmorphological, physical, and chemical soil properties. Our study showed that there was a decrease in soilorganic carbon stock about 3.7% (382 ton C ha-1) after approximately 8-15 years of land conversion. Other physical and chemical soil properties, such as soil texture, bulk density, pH, exchangeable base and acidity,cation exchange capacity, and base saturation were relatively similar. This research provide insight intohow change in vegetation cover can affect carbon and nutrient dynamics as well as become a baseline tounderstand soil recovery potential if the land is restored to forest or bush in volcanic soils.
Evaluating Soil Particle Analysis Methods for Tropical Andosols in Indonesia Anindita, Sastrika; Sandrawati, Apong; Arifin, Mahfud; Devnita, Rina
Soilrens Vol 22, No 2 (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.v22i2.61718

Abstract

Choosing the right method to quantify soil particles (sand, silt, clay) is essential to predict and managesoil characteristics in relation to e.g. nutrient or water retention. However, separating silt and clayparticles for volcanic soils is difficult. In this study, we investigated the effect of three different soilparticle analysis methods, namely the regular pipette method, Na-resin dispersion, andultrasonication with high energy level (1500 J ml-1) on the distribution of soil particle size in tropical volcanic soils. Ultrasonication with high energy level was founded to be the best method to fullyseparate silt and clay fraction compared to Na-resin and regular pipette method. In conversion, thedispersion of soil particles using regular pipette method was suboptimal. In the ultrasonicationmethod, a step that is important to achieve full dispersion is pH buffer > 8 in soil suspension. Thisultrasonication method was founded to have good correlation with Na-resin dispersion method (R =0.88). This study suggested that conventional particle size analysis may not fully separate sand, silt,and clay particles correctly in soils rich in amorphous materials and oxides, and we proposedultrasonication high energy level with pH buffer > 8 method as an alternative method.
Co-Authors Anindita, Sastrika Asri Wulansari, Asri Dewi, Ajeng Putri Kusuma Eso Solihin Firmansyah, Indra Hutapea, Dedi Iin Susilawati Ismiraj, Muhammad Rifqi Lia Budimulyati Salman Mahfud Arifin Masruri, Muhammad Kholil Maulana, Haris Mauludy, Noor Muhammad Mayasari, Ph.D, Novi Mutaqin, Zaenal Nadia Nuraniya Kamaluddin Pujawati Suryatmana Reginawanti Hindersah Rija Sudirja Rina Devnita Santi Rosniawaty SIska Rasiska, SIska Sitorus, Hasnan Pratama Solihin, Muhammad Amir Sumbada, Rifyal Achmad Rivaldi Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yani Maharani, Yani Yudithia Maxiselly, Yudithia