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Soil REns

soilrens
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Published by Universitas Padjadjaran

ISSN : 14114224 EISSN : 26854058 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

SoilREns merupakan jurnal ilmiah ilmu tanah pertanian dan lingkungan. Berisi kumpulan hasil penelitian terkini mengenai isu-isu ilmu tanah pertanian dan lingkungan. Diterbitkan atas kerjasama antara Departemen Ilmu Tanah dan Sumberdaya Lahan Fakultas Pertanian UNPAD, bekerjasama dengan Himpunan Ilmu Tanah Indonesia (HITI).

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Articles 10 Documents

Search results for , issue "Vol 15, No 1 (2017)" : 10 Documents clear

Studi Perubahan Unsur Kalium Akibat Pemupukan dan Pengaruhnya terhadap Hasil Tanaman Oviyanti Mulyani; Encep Hidayat Salim; Anni Yuniarti; Yuliati Machfud; Apong Sandrawati; Marisa Puspita Dewi
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Balanced fertilization is one solution to support sustainable agriculture.This experiment was conducted to determine the study of potassium caused by balanced fertilization. The experimental method used a Randomized Block Design (RBD) single factor with ten treatments and three replications, so the total is 30 experimental plots. The ten treatments consisted of : without fertilizer (0), ½, 1, 1,5 and 2 doses of organic fertilizer + without fertilizer (0), ¼, ½, ¾ and 1 doses of anorganic fertilizer. The results of this experiments showed that there were significant effects on potencial K, exchangeable K, K uptake and yield of pakchoy from combination of organic fertilizer with anorganic fertilizer. The treatment 1½ dose of organic fertilizer + 1 dose of anorganic fertilizer produce the highest yield of pakchoy with 5.13 kg plot-1 (increase 100 % than control).Keywords: Azolla pinnata compost, litter, peat, solid biofertilizer

Pedogenesis Dan Klasifikasi Tanah Yang Berkembang Dari Dua Formasi Geologi Dan Umur Bahan Erupsi Gunung Tangkuban Perahu Mahfud Arifin; Rina Devnita; Ridha Hudaya; Apong Sandrawati; Daud Siliwangi Saribun; Rachmat Harryanto; Ganjar Herdiansyah
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The efforts to utilize the agricultural land need a proper understanding of the soil characteristics. The soil characteristics themselves are influenced by the factors that regulate and control the soil forming and pedogenesis processes. The main soil forming factors in this study was the different ages and composition of parent materials from the eruption of Mt. Tangkuban Parahu in West Java. This research was done to comprehend the pedogenesis and to figure out the soil classifications that developed in two geological formations (Qyd and Qvu) and two ages of eruption (Holocene and Pleistocene) of Mt. Tangkuban Parahu. The study was conducted in Ciater, Subang Regency and Jatinangor, Sumedang Regency in West Java Province. The study consisted of four stages: preparation, field survey and soil sampling, laboratory analysis and presenting the report. The results showed that Pedon of Jatinangor consisted of three different stratifications of ages. The clay mineralogical composition was dominated by kaolinite, whereas mineralogical composition of the sandy fractions (heavy fractions) was augite-hypersthene. Pedon of Ciater also consists of three different stratifications of age. The clay mineralogical composition was dominated by allophane, while mineralogical compositions of the sandy fractions (heavy fractions) were green amphibole-hypersthene in the overlying horizons and amphibole-augite in the underlying horizons. The stage of soil formation on both pedon were cambic or viril. The soil classification according to Soil Taxonomy were Acrudoxic Durudands, medial over loamy-skeletal, isohyperthermic in Ciater Pedon and Fluventic Eutrudepts, fine, kaolinitic, isohyperthermic in Jatinangor Pedon.Key words: slow sand filter, activated carbon, silica sand, sand, gravel, zeolite

Dinamika Nitrogen dan Hasil Tanaman Padi Sawah (Oryza sativa L.) Kultivar INPARI 31 akibat Pemupukan NPK 18:8:18 dan Penggenangan Air pada Fluvaquentic Epiaquepts Rija Sudirja; Encep Hidayat Salim; Ade Setiawan; Muhammad Farghan Fauzan
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Fertilizer is one of the crucial means to improving rice productivity. The purpose of this research is to know and understand the behavior of nitrogen in the soil and plant rice (Oryza sativa L.) as well as the highest yields in Fluvaquentic Epiaquepts. This study was conducted in May through September 2015 at the Experimental Garden of Soil and Water Management, Faculty of Agriculture Padjadjaran University, Jatinangor, Sumedang regency. The altitude of place was 725 meters above sea level. The study design used randomized block design (RAK) with ten treatments, various dosage level of NPK 18:8:18 combined with the setting puddles and three replications, thus totaling thirty experimental plots. The results showed a real effect due to the provision of various level dose of NPK 18:8:18 and combinations of settings puddles on plant growth, the content of soil-N, absorption-N, and rice yields, both at the time of vegetative end as well as post-harvest rice. In addition, treatment of NPK 18:8:18 by setting a puddle able to deliver the highest yield at the time of post-harvest each by N-total of 0,64%; N-organic 0,26%; N-NH4 0,11%; N-NO3 0,31%; and absorption-N of plants by 1,80%. This resulted in a relatively high yield of 9.952 kg.ha-1, but not significantly different from NPK doses of 450 and 600 kg.ha-1.Keywords: NPK doses, soil-N, absorption-N, rice yield

Identifikasi Zona Agroekologi dan Kesesuaian Lahan Komoditas Mangga Arumanis (Mangifera indica L.) di Kabupaten Probolinggo Apong Sandrawati; Abraham Suriadikusumah; Ajeng Dwi Yuningtyas
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Probolinggo district is the one of the largest mango producing in Indonesia. Mango (Mangifera indica L.) is a fruit with a very good potential to be developed. Production of mango in Probolinggo district was decreased. The aim of this research to determine the land suitability for arumanis mango in Probolinggo district. This research has conducted in April untill May 2016 at Probolinggo district and Faculty of Agriculture, University of Padjadjaran. Land evaluation based on agroecological zone are slopes, drainage, moisture and temparature. Sampling spot are used composite sampling based on agroecological zones and data analysis using descriptive and comparative methods. Results of the research suitability of arumanis mango land in Probolinggo district there are three classes which enough suitable (S2), marjinal suitable (S3), and not suitable forever (N2) land suitability class with a major limiting factor slope, texture, temperature, effective depth and precipitation. Based on the result, in conclusion zone I, II and III with 69.851,36 Ha and 54,58 % is suitable for development arumanis mango in Probolinggo district.Keywords: arumanis mango, agroecological zones, land suitability

Pengaruh Dosis Konsorsium Pupuk Hayati dan Dosis Nutrisi terhadap Populasi Bakteri Pelarut Fosfat dan Hasil Tomat (Solanum lycopersicum L.) pada Sistem Hidroponik Iva Fitriani; Pujawati Suryatmana; Emma Trinurani Sofyan
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v15i1.13338

Hydroponic system is an alternative agricultural cultivation technology that able to answer the problem of narrowing farmland, decline in soil fertility, and the need of healthy foods. Production of tomato with this system has its own market segment, but it needs a specific treatment, such as preparation of planting medium, usage of fertilizer and addition of nutrient, etc. This experiment aims to determine the effect of biofertilizer consortium dosage and nutrient dosage, as well as their interaction to the population of phosphate solubilizing bacteria and tomato yield. The experiment was conducted in a greenhouse of Faculty of Agriculture, Universitas Padjadjaran, Jatinangor, in June to October 2015. Design of experiment was arranged in factorial randomized block design consisting of two factors. The first factor was biofertilizer consortium dosage (0 mL/polybag, 5 mL/polybag, and 10 mL/polybag), and the second factor was nutrient dosage (0 mL, 250 mL, and 500 mL). The result showed that there was no interaction between biofertilizer consortium dosage and nutrient dosage to the population of phosphate solubilizing bacteria and tomato yield.ywords: biofertilizer consortium, hydroponic, phosphate solubilizing bacteria, tomato

Sebaran Mikroba Tanah pada Berbagai Jenis Penggunaan Lahan Di Kawasan Bandung Utara Muhammad Amir Solihin; Betty Natalie Fitriatin
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

North of Bandung have regional multifunction. Thereby, land resources management based on existing land characteristic is important. One of important land biophysic potential is soil microorganism. Study location area is 14.492 Hectare. The research methode is survey research which characterization analysis using remote sensing interpretation, geographical information system analysis, and soil microorganism population analysis. Research result shows variation of biodiversity potency of several soil microorganism type in study location. High potency of soil microorganism in 5.020,23 Hectare (34,64%) areas, medium potency in 2.309,86 Hectare (15,94%) areas and low potency in 2.362,76 Hectare (16,30%) areas. Those biophysic potency important to sustainable agriculture development based on organic farming in the North of Bandung Area.Keywords: humic acid, role of humic acid

Keterkaitan parameter nilai pH, C-organik, N-Total, C/N dan alofan pada beberapa Andisols di Jawa Barat Rina Devnita; Mahfud Arifin; Ridha Hudaya; Ade Setiawan; Apong Sandrawati
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v15i1.13459

The correlation of chemical parameters and soil mineralogy one to another in Andisols were interesting to be studied, to increase the understanding of soil reactions, nutrient availability and soil mineral content. Andisols from three locations and derived from three different volcanic eruptions namely G. Tangkuban Parahu, G. Patuha and G. Tilu, with andesite, andesite-basalt and basalt parent materials respectively, were examined the correlation of several soil parameters. The values of pH, organic carbon, total nitrogen, C/N and allophane content were obtained from the soil analysis of every horizon of the soil profiles at each site. Correlation analyses were used to see the relationship of the parameters. The results showed a negative correlation between pH and organic carbon (r = -590 *). The soil pH values were positively correlated with the amount of allophane (r = 0.687 *). The pH values were correlated positively with imogolite content (r = 0.356 *). The pH values were negatively correlated with organic carbon (r = -0.590 *). The organic carbon content was negatively correlated with depth (r = - 0.582 *). The organic carbon content was negatively correlated with allophane (r = 0.707 *). Total nitrogen values were negatively correlated with increasing depth (r = -0.531 *).Keywords: Mt. Tangkuban Parahu, Mt. Patuha, Mt. Tilu, andesit, andesit-basalan, alophane

Pengujian Filter Fisik (Slow Sand Filter) Untuk Menurunkan Kadar Pestisida Golongan Organoklorin Siska Rasiska; Aditya Bintan Pratama; Fitri Widiantini
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Organochlorine pesticide is one of the pesticide that has high persistency and toxic. One of the attempt to degrade organochlorine pesticide using cheaper and easier way is using the slow sand filter technology. The research aimed to test the slow sand filter and to obtain the best filter media combination for degrading organochlorine pesticide. The experiment was conducted at the Laboratory of Pesticide and Toxicology, Laboratory of Plant Protection Biotechnology and Laboratory of Chemical and Soil Fertility, Faculty of Agriculutre, Padjadjaran Univeristy from December 2016 – May 2017. The experimental design used the observative and descriptive design with 8 treatments and repeated twice. P1 (activated carbon and gravel), P2 (sand and gravel), P3 (silica sand and gravel), P4 (activated carbon and zeolite), P5 (sand and zeolite), P6 (silica sand and zeolite), P7 (activated carbon, silica sand and zeolite), P8 (activated carbon, sand and gravel). The result showed that all treatments of slow sand filter were able to degrade organochlorine pesticide and the best filter media combination was from P7 with ability to degrade the pesticide level by 82,86%.Key words: slow sand filter, activated carbon, silica sand, sand, gravel, zeolite

Karakteristik Azolla pinnata sebagai Pengganti Bahan Pembawa Pupuk Hayati Padat Bakteri Penambat N2 dan Bakteri Pelarut P Mieke Rochimi Setiawati; Pujawati Suryatmana; Amalia Chusnul
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The use of inorganic fertilizers for a long term can reduce soil fertility. One of the alternatives solving this problem is by using solid biofertilizers. Solid biofertilizer requires carrier materials that can support the viability of potential microbial within. Azolla pinnata is one of the carriers that has potential as a substitute for commonly used carrier materials. This study aims to determine the effect of Azolla pinnata and other organic materials with inoculant dosage on viability of bacterial population, N-total, P-total of solid biofertilizer. This research was conducted at Soil Biology Laboratory, Department of Soil Science, Faculty of Agriculture, Padjadjaran University in January-February 2015. The treatments were organic matter (Azolla pinnata, litter compost and peat) with various dosages of bacterial inoculant (20%, 25% 30%). This experiment used the Completely Random Design with factorial pattern. The main observations of the study were analyzed by ANOVA test and continued with Duncan test with 5% confidence level. The results showed that Azolla pinnata carrier has significantly effect to the increase of N-Total and P total of solid biofertilizer. The inoculant dosage of 30% affects the population increase of Azotobacter sp., and endophytic bacteria, but does not effect to the population of Phosphate Solubilizing Bacteria and Azospirillum sp. Azolla pinnata can be recommended as an alternative carrier that can replace peat and litter compost materials.The results of this study was illustrate Azolla pinnata can be recommended as an alternative carrier for solid biofertilizer that can replace peat and litter compost material with 30% inoculant dosage.Keywords: Azolla pinnata compost, litter, peat, solid biofertilizer

Serapan N P K Tanaman Jagung (Zea mays, L.) pada Typic Eutrudepts akibat Pemberian Pupuk Organik Padat Curah (POPC) dan Pupuk Anorganik Yuliati Machfud; Emma Trinurani Sofyan; Daud Siliwangi Saribun; Anne Yuliana
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The use of organic fertilizer in the form of manure at as dose of 5000-10000 kg.ha-1 has been practiced by corn farmers, while the Solid Organic Fertilizer (SOF) in a small dose isn’t quite is known among of corn farmer. This study aims to determine the effect of POPC combined with N P K to the results of corn (Zea mays L.). The research was carried out in Typic Eutrudepts land from in October 2013 to January 2014 use a RBD, consisting of SOF was combined nine treatment with N P K and one treatment as a control. The results of this research indicated that SOF with N P K doses improved the growth and yield of corn. Increasing the dose recommended dosage 1-2 POPC (500-1000 kg.ha-1) combined with one dose of a standard N P K can increase yields significantly, the highest result was achieved by treatment with 1 dose of 2 POPC standard N P K.Keywords: corn, solid organic fertilizer, Typic Eutropepts

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Contact Name
Apong

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aponksandra@yahoo.com

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Journal Mail Official
rija.sudirja@unpad.ac.id

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Location
Kota bandung,

Jawa barat

INDONESIA