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All Journal Jurnal Ilmiah Poli Rekayasa Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Solum Jurnal Ilmiah Pertanian

Amrizal Saidi

Faculty Of Agriculture, University Of Andalas

Author-ID : 226709

Agriculture, Biological Sciences & Forestry Education Environmental Science

Published : 18 Documents Claim Missing Document

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KAJIAN SIFAT FISIKA TANAH SUB DAS AIR BATANANG DAS SUMPUR KECAMATAN BATIPUH KABUPATEN TANAH DATAR Yulnafatmawita Yulnafatmawita; Amrizal Saidi; Al Asfhihani Elnita
Jurnal Solum Vol 6, No 1 (2009): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Excessive utilization of natural resource by human being will affect the sustainability of agriculture, land and environment. This is due to degradation of soil physical properties in the area. A research about study of soil physical properties had been taken out in a sub-sub watershed Batanang of Sumpur watershed, Batipuh, Tanah Datar Regency, in West Sumatra. The research was conducted by surveying the area in 2006. Disturbed and undisturbed soil samples were taken in different land units. Then, soil samples were analysed at soil laboratory, Agriculture College, Andalas University Padang. The result showed that all of land units in this sub sub watersehed had the same soil texture class, that was fine clay. The bulk volume of the soil was higher in Mixed woodland unit than those in forest land units. Permeability value of the soil was higher at forest from all degrees of slope than that at mixed woodland, even though soil organic matter content of mixed woodland unit higher than that at forest with 25-45% slope.Keywords: Sub watershed (DAS), forest, land unit, soil physical properties

PENGARUH INOKULASI FUNGI MIKORIZA ARBUSKULA (FMA) PLUS ORGANIK TERHADAP PERTUMBUHAN DAN PRODUKSI JAGUNG PADA ULTISOL Eddiwal Eddiwal; Amrizal Saidi; Eti Farda Husin; Azwar Rasyidin
Jurnal Solum Vol 15, No 2 (2018): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Mycorrhizal symbiosis increases nutrient uptake for plants, resistance to disease, stabilizes soil aggregates and promotes the growth of soil organisms. Fungal hyphae containing glomalin is essential for soil biological processes because of their interactions with plants, soils, and microbes. Activity of AMF in the area of rhizosphere and mycorizosphere will improve the physical, chemical and biological conditions of the soil, thereby providing a healthy soil environment for plants. How the influence of AMF inoculants plus organic ingredients on growth and production of maize on Ultisol needs to be tested in the field. The purpose of this experiment is the application of AMF plus organic inoculants to corn planting, to determine the effect on growth and increase of corn production. Experiments using a randomized block design with four groups. The AMF inoculation treatment was the administration of organic plus inoculant from G. luteum (F1), G. verruculosum (F2), G. versiforme (F3), Multi species of AMF (F4) and without AMF inoculation (F0). The results showed that AMF inoculation had significant effect on total glomalin. G. versiforme has the highest total glomalin, which is 10.59 mg.g-1. The effect of AMF species had no significant effect on aggregate stability, but was significantly different from the treatment without AMF inoculation. The effect of AMF on N, P and K uptake is significantly different. The highest dry corn kiln production from G. versiforme, which is 8.07 kg / plot or 4.04 ton / ha, has the same effect as G. luteum (7.98 kg / plot or 3.99 ton / ha) and Multi AMF (7.67 kg / plot or 3.84 tons / ha). Increased production of dried corn plants inoculated with AMF plus organics can reach 40-83% higher than the plants without giving the AMF.Key words : mycorizosphere, productivity, rhizosphere, Ultisol

PENGARUH PEMBERIAN BAHAN HUMAT DARI EKSTRAK BATUBARA MUDA (Subbituminus) DAN PUPUK P TERHADAP SIFAT KIMIA ULTISOL SERTA PRODUKSI TANAMAN JAGUNG (Zea mays L.) Herviyanti Herviyanti; Fachri Ahmad; Riza Sofiyani; Darmawan Darmawan; Gusnidar Gusnidar; Amrizal Saidi
Jurnal Solum Vol 9, No 1 (2012): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The purpose of this research is to study interaction of humic substances extracted from subbituminus coal with P fertilizer on the chemical properties of Ultisol and crop production of corn (Zea mays L.). The experiment was designed in completely randomized design having 2 factors (4 x 4) with 3 replications. The first factor was dose of humic substances (A) which consists of 4 levels (A1 = 0 ppm, A2 = 400 ppm, A3 = 800 ppm, and A4 = 1200 ppm). The second factor was level of fertilizer P (B) (B1 = 100% recommendation, B2 = 75% recommendation, B3 = 50% recommendation, and B4 = 25%). The result showed that : 1) There is no interaction between humic substances and P fertilizer on the chemical nature of Ultisol and crop production of corn (Zea mays L.) 2) Use of humic substance for 800 ppm with some level of P fertilizer could improve some chemical properties of Ultisol such as decreased in content of Al-exch by 0,38 me/100 g soil, increased in P-available by 22,16 ppm, CEC by 8,42 me/100 g soil and P nutrient by 0,10 %, as well as corn yield by 25,67 g/pot compared to soil without humic substances 3) The use of SP-36 for 50 % with some level of humic substances increased in plant height by 26,58 cm, P nutrient by 0,11 %, and the use of 75 % SP-36 increased corn yield by 5,84 g/pot compared to 25% of P recommended.Keywords : humic subtances, subbituminus coal, P fertilizer.

ANALISIS KANDUNGAN SEDIMEN DAN HARA TERANGKUT PADA DAS SUMPUR KABUPATEN TANAH DATAR Yulnafatmawita Yulnafatmawita; Amrizal Saidi; Aulia Rahman
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A study about sediment content and nutrient movement was conducted in Sumpur watershed, Tanah Datar Regency, West Sumatra. The objective of the research was to determine sediment content and nutrient movement on Sumpur watershed and the relationship. Survey method by sampling water in joining river was employed to this research for sampling water. Water was sampled exactly after rain or at the time of river debit was maximum and without rain as a control. Water flowing into the river comes from several lad uses in the upper watershed. There were four types of land use found in the areas, those were forest, mixed garden, annual season crops, and rice field. Based on field observation it was found that there were two classes of soils there, Andisols and Inceptisols. The results of laboratory analyses showed that river current, soil consentration in river water, as well as sediment content were linearly correlated to rainfall amount. Positive linear correlation was also found between river debit and carried nutrients (N, P, K, Ca, Mg, Na) from the research area. Keywords: watershed, rainfall, sediment carried, and nutrient carried

PERBAIKAN SIFAT FISIKO-KIMIA TANAH PSAMMENT DENGAN PEMULSAAN ORGANIK DAN OLAH TANAH KONSERVASI PADA BUDIDAYA JAGUNG Adrinal Adrinal; Amrizal Saidi; Gusmini Gusmini
Jurnal Solum Vol 9, No 1 (2012): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research about amelioration of psycho-chemical of Psamment by using organic mulch and techniques of conservation tillage on corn growth had been conducted in 2009. Field experiment was located in Korong Olo Bangau, Batang Anai, Padang Pariaman Regency. The general objective of the research was to improve fertility of Psamment and to find out the best tillage practice for corn growth based on soil and water conservation rules. The treatment consisted of two factors (3 x 5) which was designed in RBD. The first factor was tillage (No till, Minimum till, convensional till) and the second factor was mulch source (without mulch, Tithonia, Chromolaena, rice straw, and corn straw). Parameters analysed were either soil physical (moisture, BD, total pore, aggregation) or chemical (pH, N, P, and K) properties, as well as crop production. The result showed that both treatments were able to improve soil-physico-chemical properties of Psamment and corn yield. The value of BD decreased, soil organic mattere, total pore, and aggregation increased. Then, the soil pH as well as available P and K tended to increase. The highest yield (dry seeds) was found from combination between minimum tillage and tithonia mulch.Keywords: sifat fisiko-kimia, Psamment, mulksa, olah tanah konservasi, jagung.

KAJIAN LONGSOR AKIBAT GEMPA DI NAGARI TANDIKEK KECAMATAN PARTAMUAN KABUPATEN PADANG PARIAMAN SUMATERA BARAT, INDONESIA Amrizal Saidi; Isril Berd; R Har
Jurnal Solum Vol 8, No 2 (2011): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Earthquacke on 30th of September 2009 in West Sumatra had ruined Padang Pariaman, Agam, and Padang city districts. The damage was not only caused by the earthquake itself but also due to the landsliding following the earthquake, such as in Tandikek. Hundreds of people, houses, buildings, schools, as well as agricultural land (ricefield and dryland farming) were burried in Lubuk Laweh, Kepala Koto and Cumanak. This research was conducted by employing survey method and by observing the phenomenon of tuff pumice on how it was affected by earthquake and water. Then, soil characteristics were analysed based on soil physical data from previous research. Several soil characteristics analysed were soil texture, bulk density, structure and depth of solum, organic matter content, and permeability. Land characteristics were determined through field visit. Some land condition being observed was slope (percentage and length), stone exposed, soil water depth, and land use. Additionally, besides from field visit, the data were also obtained from topography and morphology maps derived from Google Earth. Rainfall data (monthly and annually) were collected from several nearby meteorology stations. Analyses for degree of landsliding risks for an area were used soil and land characteristics criteria causing landsliding. Based on field visit, it was seen that the research area was still susceptible to landsliding. This was due to the parent materials of the soil deriving from tuff pumice which is crumb structure and loamy texture on the top layer. Climate, especially annual rainfall in study site was high enough (approximately 4322 mm) which was evently distributed all year long without dry month. Slope of the area was > 45%, especially areas hit by landsliding. Land use was not based on soil conservation rule, such as coconut and arenga pinneca, and other mixed trees were planted on the area having > 45% slope. The results of the soil characteristic analyses showed that HARKAT interval of lansliding threat was 13 and land characteristics showed 20. Summation of HARKAT values from soil and land characteristics was 33. This number showed that the study site had high degree of landsliding risk. The possibility of areas would be hit by lansliding were Partamuan, Koto Timur, Sungai Geringging, and around Maninjau lake.Keywords : earthquake, soil and land characteristics, tuff pumice, wet tropical

HUBUNGAN KESUBURAN TANAH DENGAN PRODUKTIVITAS TANAMAN Asmar Asmar; Amrizal Saidi; Masliyunas Masliyunas
Jurnal Solum Vol 7, No 1 (2010): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research about relationship between soil properties and crop yield was conducted in Pandai Sikek, Tanah Datar Region, center for cabbage and carrot production, West Sumatra in 2004 and 2005. Soil samples were collected from rainfed paddy soils by purposive random sampling. Soil samples were analyzed in Soil Laboratory, Agriculture Faculty and Agriculture Polytechnique Laboratory, Andalas University. Several soil physical properties analysed were soil bulk density and total soil pores by using gravimetric method, permeability with de Boodt method, soil water content at several pF values using pressure plate apparatus, and soil strength by using penetrometer. Soil chemical parameters analysed were soil pH using pH-meter, organic-C using Walkley and Black, available P using Bray II, and cation exchange capacity using NH4-leaching at pH 7.0, and N-total using Kjehdhal method. Crop productions were sampled from a 3x3 m2 of soil sampling area. The result showed that soils planted by cabbage and carrot had good soil physical properties, such as having balanced pore size distribution. The chemical properties of the soils were good as well, except N, K- and Ca-exchangeable which were very low. The other soil properties were quite good. Soil physical properties gave different response on both crops. Carrots were more response aeration pore and soil organic matter content, then cabbage was more response on BV, TSP, and slow drainage pores. While soil chemical properties did not give significant response. Both crops responded on Ca, but cabbage was more response on N-total, and carrot on CEC and saturated cationKey Words: Soil Physical Properties, Soil Fertility, Crop Productivity

PERANAN BAHAN HIJAUAN TANAMAN DALAM PENINGKATAN BAHAN ORGANIK DAN STABILITAS AGGREGAT TANAH ULTISOL LIMAU MANIS YANG DITANAMI JAGUNG (Zea mays L.) Yulnafatmawita Yulnafatmawita; Amrizal Saidi; Gusnidar Gusnidar; Adrinal Adrinal; Suyoko Suyoko
Jurnal Solum Vol 7, No 1 (2010): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research aiming to improve soil aggregate stability of Ultisol in terms of creating sustainable agriculture and environmental development was conducted by applying fresh organic matter (OM) into soil. Three types of OM sources used were Titonia diversifolia, Chromolaena odorata, dan Gliricidia sepium. This research was conducted in Ultisol Limau Manis Sumbar having annual rainfall > 5000 mm, in 2008. The fresh OM used was cut, mixed with soil up to 20 cm depth, and then incubated for approximately one month before corn seeds were planted. Soil was sampled before being treated with OM and then after harvesting corn (4 moths after applying OM). Soil OM content as well as soil aggregate stability (AS) and several other soil physical properties wer analysed in laboratory. The results showed that soil OM content and AS increased after one planting period. Besides that, soil physical properties were also improved. As soil physical properties became better, corn production was also higher at plot with than without OM application. Among 3 species of OM added, Tithonia diversifolia gave highest corn biomass. Level of land slope (0-8% dan 15-30%) did not show significant difference either for biomass or for soil OM content and soil AS.Key Words: marginal soil, green manure, soil aggregate stability, soil organic matter

KAJIAN SIFAT FISIKA TANAH PADA BERBAGAI PENGGUNAAN LAHAN DI DAERAH GUNUNG TANDIKEK, KABUPATEN PADANG PARIAMAN Burhanuddin Burhanuddin; Yulinar Zubaidah; Amrizal Saidi; Del Yunita
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The research was conducted in Tandikek mountain region, Padang Pariaman District, then at soil laboratory, Faculty of Agriculture, Andalas University as well as at physical and soil mineralogy laboratory, Faculty of Agriculture, Jambi University from October 2002 to February 2003. The research was designed in the form of field survey. Determination of the location was based on the land uses. There were 5 land use types, those were mixture farm, paddy soil, secondary forest, cinnamon, and coconut. The results showed that physical nature of soil under mixture farm, paddy soil, secondary forest, cinnamon, and coconut varied at texture (dusty plates), organic contents (high-very high), slowly drainage pore (PDL) and pore of water available (PAT) which were not significantly different among the five land uses. Permeability of total pore space (TRP) and fast drainage pore (PDC) were high at land use of cinnamon and not significantly different at land uses of paddy soil, secondary forest, and coconut. Key word : soil physical characteristics, land uses.

Co-Authors . Adrinal . Gusmini . HERVIYANTI Ahmad, Fachri Al Asfhihani Elnita Asmar Asmar Aulia Rahman Azwar Rasyidin Bambang Istijono, Bambang Burhanuddin Burhanuddin Chatarina Umbul Wahyuni Del Yunita Dian Fiantis Dyah Puspita Sari Eddiwal Eddiwal Eddiwal, . Elvi Roza Syofyan Eti Farda Husin Eti Farda Husin Fachri Ahmad Fachri Ahmad Gusnidar, G Herviyanti Herviyanti Isril Berd J Juniarti Lenin, Ismon Masliyunas Masliyunas R Har Raudhatu Shofiah Revalin Herdianto Riza Syofiani Roslan Ismail Suyoko Suyoko Teguh Budi Prasetyo Yulinar Zubaidah Yulnafatmawita Yulnafatmawita

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