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All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Ilmu-Ilmu Pertanian Indonesia AKSIOMA: Jurnal Program Studi Pendidikan Matematika AGRIVITA, Journal of Agricultural Science Jurnal Solum Journal of Tropical Crop Science JURNAL AGROHITA Journal Arunasita
Gusnidar, G
Fakultas Pertanian Universitas Andalas Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Mathematics Other

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DEGRADASI LAHAN PADA KEBUN CAMPURAN DAN TEGALAN DI KABUPATEN DHARMASRAYA Syafrimen Yasin; Gusnidar Gusnidar; Dedy Iskandar
Jurnal Solum Vol 4, No 1 (2007): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.267 KB) | DOI: 10.25077/js.4.1.5-9.2007

Abstract

A research conducted in Sungai Rumbai, Dharmasraya Regency and in Soil Laboratory Andalas university was aimed to evaluate soil fertility status on the depth below 0-20 cm from several land use types , especially under Mixed Garden and annual cultivated dryland soil.  Soil samples were taken on Ultisol at 0-8% slope (late-waving soil surface).  Land use types evaluated were forest, annual cultivated dryland, bush land, rangeland covered by Imperata cylindrica and mixed garden.  Composite soil samples for soil chemical analysis were taken on the 0-20 cm soil depth with four replications, and 5 drillings for each replication.  Undisturbed soil samples by using sample ring were used to analyze sol bulk volume.  The data resulted were compared to the criteria and were statistically tested using Analysis of Variance and then were continued by LSD at 5% level.  From the results of analyses could be concluded that land use  for mixed garden had the higher Organic Carbon (OC) content and the lower bulk volume (BV) than those for annual cultivated dryland soil.Key Words: Degradasi Lahan, Kebun Campuran, Tegalan
PEMANFAATAN TITONIA SEBAGAI PUPUK ALTERNATIF DAN BAHAN SUBTITUSI PUPUK N, P, DAN K, BAGI PADI SAWAH INTENSIFIKASI YANG DIBERI P SECARA STARTER Gusnidar Gusnidar
Jurnal Solum Vol 14, No 2 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.96 KB) | DOI: 10.25077/js.14.2.73-79.2017

Abstract

Penelitian bertujuan menentukan interaksi antara Titonia (Tt) dan takaran pupuk P-starter (P-s) terhadap produksi padi sawah intensifikasi. Penelitian berlokasi di Kenagarian Sicincin Kabupaten Padang Pariaman Sumatera Barat. Percobaan berbentuk faktorial 2x3 dalam rancangan petak terbagi (RPT) dengan 3 kelompok. Petak utama adalah dosis Tt, Urea, dan KCl, T0=0,0 tonha-1 Tt+200kgUrea+75kgKCl (Urea dan KCl rekomendasi=R); T1=5, tonha-1 Tt+100 kgUrea (Urea 50% R), tanpa KCl.  Anak petak adalah dosis P-s; P0 = 0kg P ha-1; P3 = 3kg P ha-1; P6 = 6kg P ha-1. Dibuat pula 3 petak kontrol menurut tradisi petani (200kg SP-36ha-1, dan 200kg Ureaha-1). Pengamatan dilakukan terhadap tanah dan tanaman, data tanaman diuji F, dan dilanjutkan dengan Uji BNT taraf 5%.  Hasil penelitian menunjukkan bahwa Tt dapat digunakan sebagai pupuk alternatif untuk menghemat penggunaan pupuk buatan (PB) berupa pupuk N (Urea), pupuk P (SP-36 atau TSP), dan pupuk K (KCl) untuk tanaman padi sawah intensifikasi. Penggunaan Tt sebanyak 5,0ton kering ha-1 dapat mengurangi dosis PB hingga 50% pupuk N (100kg Urea), 162kg SP-36, dan 100% pupuk K (75kg KCl) dengan hasil gabah sekitar 6,0 ton ha-1 (kadar air 14%). Pemberian Tt sebagai pupuk alternatif untuk mensubtitusi 50% penggunaan pupuk N, dan 100% pupuk K, dan mengurangi penggunaan pupuk P (81%) sehingga dapat menghemat biaya produksi. Dengan demikian Tt dapat direkomendasikan sebagai pupuk alternatif untuk mensubtitusi sekitar 50% penggunaan pupuk N, P, dan K pada tanah sawah intensifikasi.Kata kunci: Pupuk alternatif, pupuk buatan, sawah intensifikasi, titonia
APLIKASI UNSUR MIKRO PADA PADISAWAH INTENSIFIKASI YANG DIBERI PUPUK ORGANIK TITONIA PLUS PADA METODE SRI Nalwida Rozen; Nurhajati Hakim; Gusnidar Gusnidar
Jurnal Solum Vol 14, No 1 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.165 KB) | DOI: 10.25077/js.14.1.1-9.2017

Abstract

Penggunaan pupuk sintetik merupakan faktor penentu produksi terbesar, tetapi harganya makin mahal, sehingga menjadi masalah nasional. Oleh karenanya, pupuk alternatif harus ditemukan, salah satunya adalah POTP. Pupuk organik titonia plus (POTP) dapat mengurangi aplikasi pupuk sintetik hingga 50% dalam meningkatkan hasil padi pada sawah bukaan baru di Dharmasraya, serta sawah intensifikasi di Padang, Solok, dan di Tanah Datar. Akan tetapi, hasil padi pada sawah intensifikasi dengan POTP tersebut masih sekitar 6 ton/ha, pada hal hasil optimal yang diharapkan dengan POTP sekitar 8 ton/ha. Hal itu diduga akibat adanya gejala kekurangan unsur hara mikro. Unsur hara mikro apa yang diperlukan dalam pembuatan POTP belum diketahui. Tujuan penelitian ini adalah: untuk melengkapi formula POTP dengan unsur hara mikro untuk mengurangi aplikasi pupuk sintetik hingga 50% pada sawah intensifikasi dengan target hasil gabah sekitar 8 ton/ha. Hasil penelitian sebelumnya didapatkan 3 kombinasi Mn dan Zn yang ditambahkan dalam pembuatan POTP. Tiga formula POTP tersebut telah diteliti di lapangan pada dua lokasi sawah intensifikasi di kota Padang. Hasilnya formula POTP+3,0kgMn/ha+0kgZn/ha dan POTP+3,0kgMn/ha+3,0kgZn/ha dan POTP+4,5kgMn+6kgZn dapat diaplikasikan ke sawah, untuk diuji multi lokasi di kabupaten Solok dan Tanah Datar. Perlakuan yang dilakukan pada dua lokasi tersebut adalah POTP+3,0kgMn/ha+0kgZn/ha, POTP+3,0kgMn/ha+3,0kgZn/ha, POTP+4,5kgMn+6kgZn, POTP saja, dan 100% pupuk sinntetik. Rancangan yang digunakan berupa rancangan acak kelompok (RAK) dengan 3 kelompok. Hasil terbaik yang telah dilakukan pada sawah intensifikasi di Kabupaten Tanah Datar dan Solok adalah formula POTP+3kgMn/ha+3kgZn/ha serta POTP+3kgMn/ha+3kgZn/ha. Penambahan unsur mikro memberikan peningkatan hasil sebanyak 3,8 15%. Kata kunci: padi, unsur hara mikro, dan POTP
EFEK SISA ASAM HUMAT DARI KOMPOS ALANG-ALANG DAN PENGELOLAAN AIR DALAM MENGURANGI KELARUTAN BESI (FE) PADA TANAH SAWAH BUKAAN BARU Herviyanti Herviyanti; Gusnidar Gusnidar; Rina Alfina
Jurnal Solum Vol 4, No 2 (2007): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (92.525 KB) | DOI: 10.25077/js.4.2.63-72.2007

Abstract

The research about residue effect of humic acid from imperata compost and water management to decrease the dissolved of iron (fe) on recently used ricefield had been conducted from march till august 2007.  The objective is to study residue effect of humic acidity aplication and water management to controlling Fe and to increase rice production on recently used ricefield.  The experiment using design factorial 2 x 4 with three replication wich is place as the split plot.  The major factor is water management consisted of two treatment, thos were continously flooded (P1) and flooded and dried (intermittence) with two week interval (P2). The minor factor are four level from residue effect of humic acid  (0, 200, 400, 600 ppm).  The result of this study can provided the information that residue effect of humic acid at 600 ppm can reduce solubility of Fe2+ from 327,91 to 37,53 ppm for continously flooded and from 173,51 to 38,13 ppm for intermitten flooded. And the yield of rice (dry weight of 1000 grain ad straw) increase as much as 4,9 and 5,38 g with residue effect of humic acid at 600 ppm combination with intermittence flooded.Key word : humic acid, iron, recently used ricefield, intermittence, flooded.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.494 KB) | DOI: 10.25077/js.7.1.37-48.2010

Abstract

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
EFEK SISA JERAMI DAN TITONIA YANG DIKOMPOSKAN TERHADAP PRODUKSI PADI SAWAH Gusnidar Gusnidar; Syafrimen Yasin; Mimien Harianti; Tutik Oktaviana
Jurnal Solum Vol 15, No 2 (2018): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.855 KB) | DOI: 10.25077/jsolum.15.2.83-92.2018

Abstract

The experiment to obtain residue compost of rice straw (S) and tithonia (T) for reduce commercial fertilizers (CF) input and that effect for rice production. This research was arranged in Completely Randomized Block Design (RBD) with three replications of six treatments.  The residue treatments are; A (input Urea 200 kg ha-1 (Ru) + SP-36 100kgha-1 (Rp)+KCl 75 kgha-1 (Rk)), B (Ru+2Rp), C (S  5 tonsha-1+ R), D ( S 5 tonsha-1+Ru+Pstarter (Ps)), E (T, 2,.5 tonsha-1 + J,  2,.5 tonsha-1 + 75%Ru+Ps), F (T, 2,.5 tonsha-1 + J,  2,5tonsha-1 +50%Ru+Ps).   Data of research were statistically analysed.  If the F-calculated was significantly different, they would be further analysed using LSD 0.05. The results showed that residue of T, 2,5 tonha-1 could reduce CF by 50 kg  Ureaha-1 (25% R), 75 kg KCl  ha-1 (100% R) and 90 kg SP-36ha-1 (90% R) with production 6,66 tonsha-1 Husk Rice (HC).  If it is based on farmer tradition, residue of T could reduce CF by 50 kg Ureaha-1 (25% R), and 190 kg SP-36 ha-1 0.95.Key words : compost, residue, rice, straw, tithonia
PEMETAAN BEBERAPA CIRI KIMIA TANAH DI NAGARI SITIUNG KECAMATAN SITIUNG KABUPATEN DHARMASRAYA Gunadi Gunadi; Juniarti Juniarti; Gusnidar Gusnidar
Jurnal Solum Vol 14, No 1 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7644.374 KB) | DOI: 10.25077/js.14.1.38-50.2017

Abstract

Sitiung located in Dharmasraya, West Sumatera has 5804.3 haarea which was dominated by smallholder agriculture. The soil chemical properties in Sitiung village were often analysed by some scientists, but there was no map yet provided for the soil properties information. The purpose of the study was to determineand tocreate mapofsomesoil chemical characteristics in Sitiung Village, Sitiung District, Dharmasraya Regency. The study was conducted using a survey method, as well as spatial data analysis model. Soil sampling were taken in purposive random sampling under several land units (LU), the land units (LU) were limited by soil order, slopes, and land use. LU 1: Ultisols, flat, mixed garden; LU 2: Ultisols, flat, rice; LU 3: Entisols, flat, rice; LU 4: Entisols, flat, mixed garden; LU 5: Entisols, mild, shrubs; LU 6: Oxisols, mild, shrubs; LU 7: Entisols, mild, oil palm; LU 8: Entisols, flat, oil palm; LU 9: Oxisols, mild, oil palm; LU 10: Oxisols, flat, oil palm; LU 11: Ultisols, mild, oil palm; LU 12: Oxisols, steep, oil palm. Parameters analysed were pH, Al-exchangable, organic-C, total-N, P-available, CEC, and base saturation. The spatial data analysis and data processing were used to transform soil analysis results into a thematic soil map.The result showed that the highest pH value was 5.76 (slightly acid) found in LU 3, and the lowest pH value was 4.37 (highly acid) in LU 10. The highest Al-exchangable was 9.72 cmol/kg in LU 6, while the lowest value was 0.92 cmol/kg in LU3. Furthermore, the highest value oforganic-C was 3.12 % (high) in LU 2, and the lowest was 1.78 % (low) in the LU 6. The total-N content wasmedium. The highest content of P-available was 14.7 ppmin LU 10, and the lowest was 7.93 ppm (low) in the LU 4. The highest CEC was 12.74 cmol/kg (low) and the lowest was 4.70 cmol/kg (very low) in LU 7. The basic cation content was found to be low to moderate.Keyword: Land Unit, Sitiung Village, Soil chemical properties, Thematic soil map
Pemanfaatan Tithonia Diversifolia pada Tanah Sawah yang Dipupuk P Secara Starter terhadap Produksi serta Serapan Hara N, P, dan K Tanaman Padi . Gusnidar; Teguh Budi Prasetyo
JOURNAL OF TROPICAL SOILS Vol 13, No 3: September 2008
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2008.v13i3.209-216

Abstract

The research of Tithonia diversifolia utilization in the paddy soil that was fertilized P-starter on yield and N, P, K uptake on rice crop, has been conducted from August to December 2005.  The objective of this research was to determine interaction between P-starter levels, and tithonia levels on production and N, P, K element uptake of rice crop. The research was pot experiment in the green house in factorial design 4 x 4.  First factor was 4 levels of tithonia with reduce dosage fertilizer aplied (T0 = 0 t tithonia + 200 kgUrea ha-1 + 75 kg KCl ha-1; T1= 2,5 t tithonia ha-1 + 150 kg Urea ha-1, without KCl; T2 = 5,0 t tithonia ha-1 + 100 kg Urea ha-1, without KCl; dan T3 = 7,5 t tithonia ha-1 + 50 kg Urea ha-1, without KCl).  The second factor was 4 levels of P-starter (0, 2, 4, and 6 kg P ha-1).  The result showed that combination T3 treatment and 2-4 kg P-starter ha-1 increased the grain yield 20,51-21,08 g pot-1 (18,65-19,21%). Effect of T3 treatment was not significant with T2 treatment on the grain yield.  The best interaction was T3 treatment on N and K uptake ((0,84 g pot-1 for N, dan 0,82 g pot-1 for K).  
Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil . Gusnidar; Syafrimen Yasin; . Burbey; . Yulnafatmawita; Sulaiman Saleh; Rantau Andhika
JOURNAL OF TROPICAL SOILS Vol 17, No 2: May 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i2.151-156

Abstract

The research was aimed to obtain a combination of rice straw (S) and tithonia (Tithonia diversifolia) (T) to increasechemical fertilizers use efficiency (FUE) on paddy soil which was conducted in Sicincin, Padang Pariaman Regencyin 2008. The experiment consisted of 8 treatments (A= recommendation input: 200 kg Urea ha-1 (Ru) + 100 kg SP-36ha-1 (Rp) + 75 kg KCl ha-1 (Rk)), B = Ru + 2Rp, C = 2.5 Mg Tithonia (T) ha-1 + 75% Ru+10 kg SP36 ha-1 as a starter Pfertilizer (P-s), D = T + 75% Ru, E = 5 Mg Rice Straw (S) ha-1 (Sr) + Ru + Rp + Rk, F = Sr + Ru + P-s, G = T + 0.5Sr + 75%Ru + P-s, H = T + 0.5S + 50% Ru + P-s) with three replications. The treatments were randomly allocated in each blockRandomized Block Design (RBD). The results showed that application of fresh organic matter (OM) from tithonia +75% recommended Urea without KCl and P-starter addition on intensification rice field increased synthetic FUE onpaddy soil. Application of tithonia for 2.5 Mg ha-1 + 75% of recommended Urea (150 kg Urea), without synthetic Pand K fertilizers seemed to be the best treatment to get the highest yield (8.08 Mg Harvested Dry Seed (HDS) ha-1(= 7.05 Mg Milled Dry Seed (MDS) ha-1) of rice, then it was followed by the treatment based on farmer tradition inputwith the yield was 7.25 Mg HDS ha-1 (= 6.41 Mg MDS ha-1). The use of fresh tithonia as much as 2.5 Mg ha-1 basedon its dry weight could be considered as an alternative fertilizer for rice crops in intensification rice field.[How to Cite: Gusnidar, S Yasin, Burbey, Yulnafatmawita, S Saleh and R Andhika. 2012. Application of Rice Straw and Tithonia for Increasing Fertilizer Use Efficiency on Paddy Soil. J Trop Soils 17 (2) : 151-156. Doi: 10.5400/jts.2012.17.2.151] [Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.2.151]
Improvement Chemical Properties of Oxisols and Rice Production with Humic Substances from Sub-bituminous Coal Indonesia Herviyanti Herviyanti; Gusnidar Gusnidar; M. Harianti; A. Maulana
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i3.1106

Abstract

Humic Substances (HS) sources of  Sub-bituminous can be used as soil amandement. The purpose of this research was to examine the residual effects of HS combined with P-fertilizers and the method of  incubation to improve Oxisols fertility and rice production. The experiment consisted of 2 factors, including: 1) incubation methods (i.e. I1 = HS incubated 1 week, then incubation of P fertilizers 1 week; I2 = HS and P- fertilizers directly incubated into the soil  2 weeks; and I3 = HS and P-fertilizers mixed 1 week, then incubated to soil 1 week), and 2) residual effect of HS with P-fertilizers combinations (i.e. H1 = 800 ppm + 100%; H2 = 800 ppm + 75% R; H3 = 400 ppm + 100% R; and H4 = 400 ppm + 75% R). All treatment was compared to the tradition of fertilization by the local farmers and control. The results showed that the combination of residual effects (HS and P-fertilizers) with the incubation method decreased exchangeable Al, as consequently increased the available P in Oxisols. The HS addition increased the efficiency of P fertilizers up to 25%, as well as increased rice production in averaged 3.9 t/ha (i.e. treatment H4).
Co-Authors . Adrinal . Burbey A. Maulana Adilla Sy Mahdiyah Amrizal Saidi Andhika, Rantau Annisa Fitri Azwar Rasyidin Burbey Burbey Burbey, . Chici Anche Darfis, Irwan Darmawan Darmawan Dedy Iskandar Dian Fiantis Erick Yuhardi Erick Yuhardi Fachri Ahmad Fachri Ahmad Gunadi Gunadi Gunadi Gunadi Gunadi Gunadi Hakim, Nurhajati Hermansah Herviyanti Herviyanti Hidayati, Helsa J Juniarti Kenti, Helda M. Harianti M. Lucky Maulana Insanul Kamil Mimien Harianti Muhammad Lucky Nalwida Rozen Nurhajati Hakim Nurhajati Hakim Rantau Andhika Resi Ezrari Rina Alfina Riza Syofiani Rosa Nofianti Saftia Laila Rajmi Saleh, Sulaiman Sulaiman Saleh Suyoko Suyoko Syafrimen Yasin Syaiful Syaiful Teguh Budi Prasetyo Tutik Oktaviana Ulfia Fadilla Yulnafatmawita Yulnafatmawita Yulnafatmawita, .