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Jurnal Solum

solum
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Published by Universitas Andalas

ISSN : 18297994 EISSN : 02560835 DOI : https://doi.org/10.2057/jsolum

Core Subject : Agriculture, Social,

Agriculture, Biological Sciences & Forestry Environmental Science

Focuses and scopes of Jurnal Solum is to publishes all aspects in the original research of soil science or review covering: Soil physic and soil conservation, Soil mineralogy, Soil chemistry and soil fertility, Soil biology and soil biochemical, Soil genesis and classification, Land survey and land evaluation, Land development and management environmental.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah

Articles 173 Documents

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APLIKASI KOMPOS LIMBAH KULIT BUAH KAKAO DAN JARAK TANAM BERBEDA TERHADAP PERTUMBUHAN TANAMAN TERUBUK (Saccharum edule Hasskarl) Ramadhani Chaniago; Darni Lamusu
Jurnal Solum Vol 15, No 1 (2018): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Cocoa fruit skin is a waste that can cause environmental problems around the plantation. One way to utilize the waste of cocoa fruit skin is made organic fertilizer. The use of different spacing will affect the large number of plant unity area and will indirectly affect the absorption of nutrients, water and other growth factors. The purpose of this study was to determine the effect of composting of cocoa fruit skin waste on the growth of cropped plants (Saccharum edule Hasskarl) with different plant spacing. This field experiment was conducted from July to November 2016 with research location in Kecamatan Luwuk Banggai Regency. The experimental design used was factorial in randomized block design with 2 replications, then there were 18 treatment combinations. In this research the first factor of composition of cocoa fruit skin with cow dung consisting of 3 levels namely: P1 = 50 kg of compost: 10 kg of cow dung; P2 = 50 kg: 30 kg; P3 = 50 kg: 50. While the second factor are plant spacing consisting of 3 levels, namely: J1 = 100 cm X 150 cm; J2 = 100 cm X 100 cm; J3 = 100 cm X 50 cm. Based on the result obtained, It showed that the treatment of 50 kg of cocoa fruit skin compost with 50 kg of cow dung (P3) gave the best shoot effect on 5 weeks after planting (WAP) , to the best plant height that is P2 treatment on 3 (WAP), and the best leaf length is P2 treatment on 2 up to 4(WAP).Key words : Compost, Plant Spacing, Terubuk

PENGARUH PEMBERIAN BEBERAPA JENIS BAHAN ORGANIK TERHADAP PENINGKATAN KANDUNGAN HARA N, P, K ULTISOL KEBUN PERCOBAAN FAPERTA UNAND PADANG Gusmini Gusmini; Yulnafatmawita Yulnafatmawita; Anita Febriani Daulay
Jurnal Solum Vol 5, No 2 (2008): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research entitled the effect of various sources of organic matter on improvement of N,P,K Nutrient of Ultisol was conducted in Limau Manis Padang. The research was aimed to investigate the contribution of different source of organic matter to improve N,P,K content in soil. Field research was arranged in Randomized Block Design (RBD) consisting 5 treatments and 3 replications (blocks). Treatments are : A = no organic matter added, B = Tithonia, C = Paddy Straw, D = Imperata cylindrica, and E = Leucaena glauca. The dosage for each treatment was 20 ton/ha. The result showed that tithonia gave the best contribution in improving N,P,K content of Ultisol Limau Manis.Keywords :organic matter, N, P, K of Ultisols.

RESPON PERTUMBUHAN DAN HASIL PADI GOGO TERHADAP PEMBERIAN BEBERAPA DOSIS KOMPOS SAMPAH KOTA Yusnaweti Yusnaweti
Jurnal Solum Vol 14, No 1 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Penelitian Respon Pertumbuhan Dan Hasil Padi Gogo Terhadap Beberapa Dosis Kompos Sampah Kota adalah percobaan lapangan dan laboratorium Fakultas Pertanian Universitas Muhammadiyah Sumatera Barat. Tujuan penelitian untuk mendapatkan dosis kompos sampah kota yang tepat untuk ;pertumbuhan dan hasil padi gogo. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK), dengan 5 taraf dan 4 ulangan yaitu : dosis kompos sampah kota adalah 0, 5, 10, 15 dan 20 t/ha. Data pengamatan dianalis secara statistika dengan uji F pada taraf nyata 5 %. Hasil peneltian memperlihatkan dosis 20 t/ha dapat memberikan hasil yang terbaik untuk pertumbuhan tanaman padi gogo. Kata kunci: Kompos sampah kota dan padi gogo

Role of Gliricidia sepium in Improving Aggregate Stability of Ultisol Limau Manis Padang: A LABoratory study Yulnafatmawita Yulnafatmawita; Asmar Asmar; Vitria Purnamasari
Jurnal Solum Vol 9, No 1 (2012): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

There is no much public concern about soil aggregate stability improvement of a soil. This is due to the fact that it does not directly affect crop yield for a short term, but it determines sustainable agriculture and development for a long term. This research was aimed to investigate soil physical properties especially soil aggregate stability of Ultisols after fresh OM application, then to determine the exact OM dosage to improve the stability. Ultisols used was from Limau Manis (± 367 m asl), an area in lower footslope of Mount Gadut, having wet tropical rainforest. Due to land use change, farming activities in that sloping area could enhance erosion process in the environment. Therefore, efforts to anticipate the erosion must be found. Fresh OM applied was Gliricidia sepium which was found plenty in the area. Five levels of fresh Gliricidia sepium, were 0, 5, 10, 15, and 20 t/ha. Top soil (0-20 cm depth) was mixed with OM, then incubated for 3 months in glasshouse. The results after a 3-month incubation showed that SOM content did not statistically increase, but it improved based on the criteria, from very low to low level as OM was applied for ≥ 10 t/ha. It seemed that 10 t/ha Gliricidia sepium was the best dosage at this condition. There was a positive correlation between SOM content and aggregate stability index of Ultisols after fresh Gliricidia sepium addition.Keywords: Ultisols, soil aggregate stability, soil organic matter content

EKSTRAKSI BAHAN HUMAT DARI BATUBARA (SUBBITUMINUS) DENGAN MENGGUNAKAN 10 JENIS PELARUT Dewi Rezki; Fachri Ahmad; Gusnidar Gusnidar
Jurnal Solum Vol 4, No 2 (2007): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

This experiment was conducted to extract sub-bituminous coals for obtaining humic substances by using 10 kinds of extract solutions. The best and effective solution was investigated and also the characteristics of humic substances soluble in those solution. Complete Randomize Design was used to find out the effect of treatments. Two types of coals were taken from Pasaman and Sawahlunto and the ten kinds of extract solutions were 0.1 N NaOH, 0.5 N NaOH, 0.1 M Na2CO3, 0.5 Na2CO3, 0.1 N HCl, 0.1 M Formic Acid, 0.1 M Oxalic Acid, 0.025 N HF, Ethanol 70 %, and Ethanol 90 %. Results of this laboratory experiment showed that all ten extraction solutions had the ability to extract humic substances but in different amount. The best solution that could be used effectively was 0.5 N NaOH. This solution could extract 31.5 % of humic substances from Pasaman Sub-bituminous coals, but only 15.4 % could be extracted from that of Sawahlunto. Infra Red Spectrometer was also used to identify the characteristics of functional groups appear on those humic substances extracted.Key Words: humic acid, coal

PERTUMBUHAN DAN PERKEMBANGAN MIKROORGANISME TANAH PADA MEDIA AGAR EKSTRAK TANAH YANG DIPENGARUHI HERBISIDA GLYFOSAT Agustian Agustian; Ari Prima Wahyudi; Oktanis Emalinda
Jurnal Solum Vol 2, No 2 (2005): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Soil microorganisms have significant role in plant nutrient cycles availability. Repeated glyphosate application and unwise use this herbicide may give an impact in soil microorganism population and create a shift in community structure in soil microcosm. The objectives of this study were to (1) analyze the effects of different glyphosate application rates on soil mcroorganism population and community structure. The research have done in two series i.e. in limed soil extract and unlimed soil extract media. Five treatments and 3 replications arranged in Completely Randomized Design were used in this experiment. The treatments assay were doses of glyphosat application i.e : without glyphosat, 2 ml, 4 ml, 6 ml and 8 ml of glyphosate. Duncans New Multiple Range Test were used to compare the results obtained in this experiment. Total population obtained in 2 ml application of glyphosate in soil extract agar medium are 5.6x108 g-1 of soil or decreasing 50%. If doses of glyphosate increase to 8 ml the total of population diminished 75%. The glyphosate application have only influence to fungi population but not to the total population in limed soil extract agar. The diameter of bacteria and fungi colony observed in unlimed or limed soil extract agar media decrease by rising of doses glyphosate application and have the same as the population pattern. Key words : Glyphosate, soil microorganism, Ultisol

APLIKASI KOMPOS TITONIA DAN JERAMI TERHADAP PENGURANGAN INPUT PUPUK BUATAN DAN PENGARUHNYA TERHADAP PRODUKSI PADI Gusnidar Gusnidar; Syafrimen Yasin; Burbey Burbey; Resi Ezrari
Jurnal Solum Vol 8, No 1 (2011): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research about “Application of Tithonia and rice straw compost on reduction of commercial fertilizer application and it effects on rice production” has been conducted in Sicincin, 2x11 Enam Lingkung, Padang Pariaman Region as well as in Soil Laboratory Agriculture Faculty, Andalas University, Padang. This research was conducted from January until May 2009. The objective of this research was to evaluate effect of titonia and rice straw compost application at intensification rice field on rice production and reduction of commercial fertilizer use. A field research was allocated based on Randomized Block Design with 6 treatments, those were: A= Farmer Tradition Input (200 kg Urea ha-1+ 200 kg SP-36 ha-1);B=Recomended Input (R= 200 kg Urea ha-1+ 100 kg SP-36 ha-1+ 75 kg KCl ha-1); C= Application of Compost (5 ton rice straw ha-1) + 100% Recommendation Input (Urea + KCl + SP-36); D= Application of Compost (5 ton rice straw ha-1) + Urea 200 kg ha-1,without KCl + P-starter 10 kg SP-36 ha-1; E= Application of Compost (Titonia 2,5 ton ha-1 + rice straw 2,5 ton ha-1) + Urea 75 % (R) (150 kg ha-1), withou KCl, and P-starter 10 kg SP-36 ha-1; F= Application of Compost (Titonia 2,5 ton ha-1 + 2,5 rice straw ton ha-1) + Urea 50 % (R) (100 kg ha-1), without KCl,and P-starter 10 kg SP-36 ha-1. Data from field research were statistically analysed. If the F-calculated was significantly different, they would be further analysed using LSD (5%). The results showed that application of rice straw-titonia mix compost on intensification rice field could reduce commercial fertilizer by 50 kg Urea ha-1 (=25% Recommendation), and 75 kg KCl ha-1and 100 kg SP-36 ha-1 (100% recommendation) with increasing yield by 1.1 ton ha-1 Harvested Dry Yield (GKP) and 1.03 t/ha Mill Dry Yield (GKG). If it was compared to fertilization based on farmer tradition, application of rice straw-titonia mix compost on intensification rice field could reduce commercial fertilizer by 50 kg Urea ha-1 (25% R), and 190 kg SP-36 ha-1 (95% ).Keywords: compost, fertilizers, intensification, rice straw, titonia.

KARAKTERISTIK DAN KERAGAMAN TANAH KETAPING SELATAN KECAMATAN BATANG ANAI KABUPATEN PADANG PARIAMAN Adrinal Adrinal; Neldi Armon
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A study of soil characteristics and soil variation was carried out in Ketaping Selatan, Batang Anai, Padang Pariaman District. The study aimed to identify the characteristics and variation of soil of Ketaping Selatan as a selected village under University of Andalas supervisory. The results indicated that Ketaping Selatan has two soil variations namely Typic Udifluvents and Terric haplosaprists. Both soils are categorized as soils with low fertility and low carrying capacity. It is needed a proper management for enhanching their soil productivity, erspecially for agricultural purposes. Keyword : soil caracteristics, soil variation

PENGARUH PEMBERIAN ABU BATUBARA SEBAGAI SUMBER SILIKA (SI) BAGI PERTUMBUHAN DAN PRODUKSI TANAMAN PADI (Oryza sativa L) Teguh Budi Prasetyo; Syafrimen Yasin; Edri Yeni
Jurnal Solum Vol 7, No 1 (2010): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research about use of coal ash as a silicate source for rice production was conducted in Greenhouse at Agriculture Faculty of Andalas University from October 2006 to February 2007. The objective of this research was to study the effect of coal fly ash as silicon (Si) sources for the growth and production rice crops (Oryza sativa L.). The experiment was designed on Completely Randomized Block Design with four treatments and three replications. The treatments consist of ; 0 ton/ha, 20 ton/ha , 40 ton/ha and 60 ton/ha coal fly ash. The result showed that, fly ash from coal burning could increase available fosfor and reduce dissolved aluminum in the soil. Fly ash could also increase crop production, P- and Si-absorption by crops.Key Words: coal fly ash, silicate, rice crops

HUBUNGAN ANTARA STATUS C-ORGANIK DAN STABILITAS AGGREGAT TANAH KEBUN PERCOBAAN LIMAU MANIS PADANG PADA BEBERAPA PENGGUNAAN LAHAN Yulnafatmawita Yulnafatmawita
Jurnal Solum Vol 3, No 2 (2006): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Organic matter is one of soil bonding agent in formation and stabilization of soil aggregates or soil structure. Since it affects several other soil peorperties, soil structure is considered as a determinant for soil quality. Therefore, depletion of organic matter content in a soil will cause soil degradation and consequently environmental pollution. This research was aimed to determine org-C status of Ultisols Limau Manis and the relationship to aggregate stability, as affected by land use change. The results showed that soil organic-C decreased by approximately 42% (from 9.86% to 5.75%) and by 55% (from 9.86% to 4.42%) at 0-10 cm depth and by 45% (from 3.79% to 2.09%) and 18% (from 3.79% to 3.10%) at 10-20 cm depth as land use was changed from forested ecosystem to perennial and annual crops, respectively, in Ultisols Limau Manis Padang. There was a tendency of positive correlation between soil org-C status and the aggregate stability, or negative correlation between org–C status and the dispersion ratio (DR). Between both depths, 10-20 cm depth showed a stronger correlation than that of 0-10 cm depth.Key words: org-C, land use change, dispersion ratio, aggregate stability

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Agustian

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agustian@agr.unand.ac.id

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+6275172701

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redaksisolumm@agr.unand.ac.id

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