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All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Ilmu-Ilmu Pertanian Indonesia AKSIOMA JURNAL PENDIDIKAN MATEMATIKA AGRIVITA, Journal of Agricultural Science Jurnal Solum Journal of Tropical Crop Science JURNAL AGROHITA

Gusnidar Gusnidar

Prodi Ilmu Tanah Fakultas Pertanian Universitas Andalas Padang, Sumatera Barat, Indonesia 25163

Author-ID : 271346

Agriculture, Biological Sciences & Forestry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Mathematics Other

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Organic Fertilizer Titonia Plus and Micro Nutrients Improved Rice (Oryza sativa L.) Production in Koto Panjang and Koto Tingga, Padang City, West Sumatera, Indonesia Rozen, Nalwida; Gusnidar, Gusnidar; Hakim, Nurhajati
Journal of Tropical Crop Science Vol 7 No 01 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

A series of on-farm fi eld experiments were conducted in two locations in Padang, Koto Panjang and Koto Tingga, West Sumatera, Indonesia in 2015. The purpose of the experiment was to establish the formula of organic fertilizer derived from Tithonia supplied with micro nutrients, Zn and Mn, on rice. The experiments were conducted using completely-randomized block design with six treatments and three replications. The treatments were P = Tithonia Organic Fertilizer Plus (TOFP) + 3.0 kg Mn.ha-1, Q = TOFP + 3.0 kg Mn.ha-1+ 3.0 kg Zn.ha-1, R = TOFP + 4.5 kg Mn.ha-1 + 6 kg Zn.ha-1, S= TOFP + 4.5 kg Mn.ha-1+ 9 kg Zn.ha-1, T = TOFP only, U = 100% chemical fertilizer only. Treatment with micro nutrients as addition to TOFP (TOFP+ 3.0 kg Mn.ha-1 and TOFP+ 3.0 kg Mn.ha-1+3.0 kg Zn.ha-1) increased rice grain yield by 80 g per clump.

PENGEMBANGAN PERANGKAT PEMBELAJARAN MATEMATIKA BERDASARKAN KERANGKA KERJA TPACK PADA MATERI LINGKARAN UNTUK MENGOPTIMALKAN KEMAMPUAN PENALARAN DEDUKTIF gusnidar gusnidar; Sutrisno Sutrisno; Syaiful Syaiful
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 7, No 3 (2018)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

AbstractTPACK workframe development research on the Curved Plane Solids is intended to develop a workframe such as Learning Plan (RPP) and students’ activity sheets (LKPD) in the form of a flip page ebook, apply the workframe and analyze the relantionship among components of TPACK compiler. Student test scores on average 77 wich includes the category of “optimal”..

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.

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

PENGARUH KOMPOS ASAL KULIT JENGKOL (Phitecolobium jiringa (Jack) Prain ex King) TERHADAP CIRI KIMIA TANAH SAWAH DAN PRODUKSI TANAMAN PADI Gusnidar Gusnidar; Yulnafatmawita Yulnafatmawita; Rosa Nofianti
Jurnal Solum Vol 8, No 2 (2011): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

This research had been conducted in the greenhouse and the Soil Laboratory of the Faculty of Agriculture, Andalas University, Padang, West Sumatera. The study was done from March until October 2011. The aims of this research were to get the effect of compost from jengkol shell on chemical properties of paddy soil and rice yield. The experiments were conducted in a greenhouse and the experimental units were arranged based on completely randomized design (CRD). The treatments were application of compost K0 = 0 tons/ha (0 g/pot), K1 = 5 tons/ha (20 g/pot), K2 = 10 tons/ha (40 g/pot), K3 = 20 tons/ha (80 g/pot), K4 = 40 tons/ha (160 g/pot). The data were compared to the criteria of soil chemical properties and plant data were statistically analysed for the variance. If the F calculated > F table, the analyses were continued by using DNMRT at 0.05 level of significance. The results showed that application of 160 g compost/pot increased soil pH by 21.78%, N-total by 123.07%, organic-C by 65.84%, available P by 93.55%, K exch. by 238.35%, Ca exch. by 133.33%, Mg exch. by 90.00%, CEC by 238.90%, Cu exch. by 54,10%, as well as the yield by 12,68% compared to the treatment without compost application.Keywords : jengkol, nutrients, paddy soil, production

Perbaikan Sifat Kimia Oxisol dengan Pemberian Bahan Humat dan Pupuk P untuk Meningkatkan Serapan Hara dan Produksi Tanaman Jagung (Zea mays, L.) Herviyanti Herviyanti; Chici Anche; Gusnidar Gusnidar; Irwan Darfis
Jurnal Solum Vol 9, No 2 (2012): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research was carried out at glass house and at Soil Laboratory of Faculty of Agriculture, Andalas University Padang. The experiment was aimed to determine the interaction between humic material from compost and P fertilizer on some chemical properties of Oxisol, nutrient uptake and corn production. This experiment consisted of 2 factors (4 x 4) with three replications which were allocated in completely randomized design (CRD). The first factor was humic material having 4 doses (0, 400, 800, and 1200 ppm) and the 2nd factor was P fertilizer having 4 doses (100%, 75%, 50%, and 25% of recomendation (R)). The result showed that there was : 1) Interaction between humic materials and P fertilizer for the quality the corn seeds. Application of 800 ppm humic material improved the quality of the seeds even though at low level of P fertilizer. 2) Then, it also increased availability of P by 23.03 ppm, N total by 0.09 %, and decreased Al-exch by 0.53 me (100 g)-1 and Fe-exch by 25.62 ppm compared to threatment without application of humic material. Likewise, nutrients (N and P) uptake by plant also increased by 0.28 and 0.03 %, respectively. 3) Application of P fertilizer at 75 % R increased soil P availability by 3.77 ppm, N and P content of plant by 0.43 % and 0.06 %, and seed weight by 13.20 g and decreased Fe-exch by 21.16 ppm, compared to 25 % R of P fertilizer.Keywords : humic material, P- fertilizer, nutrient uptake

INKUBASI TITONIA PADA TANAH SAWAH TERHADAP ASAM-ASAM ORGANIK Gusnidar Gusnidar; Nurhajati Hakim; Teguh Budi Prasetyo
Jurnal Solum Vol 7, No 1 (2010): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The research about “Incubation of titonia for organic acid production in rice field” has been conducted in soil laboratory Agriculture Collage Andalas University Padang, since January to August 2005. The objective of this research was to determine the best method of using titonia to produce organic acids in rice field. The research had 2 factors, 3 series of titonia application and 5 levels of titonia dossages with 3 replications. The series are: A1 = Titonia was mixed with soil and then, the soil was directly flooded; A2 = Titonia was mixed with soil and then, let them stay on soil surface for 3 weeks before being flooded; A3 = Titonia was mixed with soil and then, the soil was moistened until field capacity for 3 weeks before being flooded. The second factor was titonia dossages (0,000; 1,250; 2,500; 3,750; 5,000 g dry weight of titonia per kg soil). The result showed that organic acids of the soil had been changed as a consequence of titonia application and the incubation with soil. The highest organic acid production was found at combination of titonia incubation with soil at field capacity for 3 weeks, that was malat acid (184-489 mgl-1). The others detected were citrate, tartarate, malate, and benzoat acids, butt fenolate acids was not detected. Keywords: incubation, organic acids, rice field, titonia.

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.

TITONIA DAN JERAMI PADI YANG DIKOMPOSKAN TERHADAP CIRI KIMIA TANAH DAN PRODUKSI JAGUNG PADA ULTISOL Gusnidar Gusnidar; Annisa Fitri; Syafrimen Yasin
Jurnal Solum Vol 16, No 1 (2019): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Ultisol is broad suboptimal soils, need to be developed to increase for foods and animal feeds, but properties of physics and chemistry by the soils bad. This research was aimed to studied the influence of compost derived from titonia plus rice straw in improving chemical properties of Ultisol and corn production. This researh was conducted in glasshouse and Soil Laboratory of Agriculture Faculty, Andalas University, Padang, West Sumatra, Indonesia from January to July 2017. The experiment consisted of 5 treatments (0.00; 2.50; 5.00;7.50; 10.00 tonha-1. with 3 replications. Soil data resulted were compared to the soil criteria, while corn data were statistically analyzed the variance and continued using DNMRT at 0.05 level of significance, if F-calculated > F-table. The results of research showed that optimum dosage for repaired chemical properties of 7,50 tonha-1. It dosage soil pH 6,18 unit; available P by 17,64ppm; CEC by 18,38cmol(kg)-1; organic-C by 1,27%, total-N by 0,23%; K-exch. by 0,49cmol(kg)-1; Ca-exch. by 2,63 cmol(kg)-1; Mg-exch. by 0,57cmol(kg)-1 dan Na-exch. by 0,39cmol(kg)-1, with dry weight of seed by 85,48gpot-1; dry weight of straw by 75,84gpot-1 and dry weight of 100 seed by 25,50g. Key words : Compost derived from titonia plus rice straw, corn, Ultisol.

HUBUNGAN STOK KARBON TANAH DAN SUHU PERMUKAAN PADA BEBERAPA PENGGUNAAN LAHAN DI NAGARI PADANG LAWEH KABUPATEN SIJUNJUNG Gunadi Gunadi; Juniarti Juniarti; Gusnidar Gusnidar
Jurnal Solum Vol 17, No 1 (2020)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The content of soil C-organic is strongly influenced by land management. Plants tend to increase soil organic C-stock, however an increase in soil temperature can increase the rate of decomposition of soil organic matter which will reduce soil organic C-stock. The aim of the study is to look at the relationship of soil organic carbon stock (SOCS) with changes in soil surface temperature. The study was conducted using a survey method consisting of 5 stages, namely preparation, pre-survey, main survey, soil analysis in the laboratory and data processing. Soil sampling is done by purposive random sampling under several land units (LU). LU is limited by the order of the soil, slope, and land use. Based on the land unit map, we found 14 land units in the study area. Soil samples were taken at a depth of 0-20 cm. Surface temperature measurements are carried out directly in the field using a room temperature thermometer. The parameters analyzed are organic-C, organic particulate-C, and bulk density (BD). The research data were processed statistically using simple linear regression equations. The results showed that the measurement of rice field surface temperature had the highest temperature of 34 0C, and rubber plantations had the lowest temperature of 28 0C. Organic-C affects soil BD, the higher the value of organic-C, the lower the BD value. The highest carbon stock was found in soil unit 10 with rubber plantations with a slope of 8-15%, 41 kg m-2 and decreased with increasing slope. The difference in the value of SOCS in rice fields is influenced by land management, because there is no return of crops residue in the form of straw to the ground. The results of the regression analysis showed that surface temperature did not have a significant effect on the SOCS value.Keywords : carbon stock, land use, Padang Laweh

Co-Authors . Adrinal . Burbey . Yulnafatmawita A. Maulana Amrizal Saidi Annisa Fitri Burbey Burbey Chici Anche Darmawan Darmawan Dedy Iskandar Dian Fiantis Erick Yuhardi Erick Yuhardi Fachri Ahmad Fachri Ahmad Gunadi Gunadi Gunadi Gunadi Gunadi Gunadi Hakim, Nurhajati Herviyanti Herviyanti Irwan Darfis J Juniarti M. Harianti M. Lucky Mimien Harianti Muhammad Lucky Nalwida Rozen Nurhajati Hakim Nurhajati Hakim Rantau Andhika Resi Ezrari Rina Alfina Riza Sofiyani Rosa Nofianti Saftia Laila Rajmi Sulaiman Saleh Suyoko Suyoko Syafrimen Yasin Syaiful Syaiful Teguh Budi Prasetyo Teguh Budi Prasetyo Tutik Oktaviana ulfia fadilla Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita

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