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PENGARUH PENGELOLAAN AIR TERHADAP KONSENTRASI BESI (Fe) PADA SAWAH BUKAAN BARU Teguh Budi Prasetyo; Ruhaimah Ruhaimah; Septi Angga Wardahana
Jurnal Solum Vol 3, No 1 (2006): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.946 KB) | DOI: 10.25077/js.3.1.8-18.2006

Abstract

Recently rice field in Ultisol has some problems, the most important thing is high concentration of Fe that can be toxic to the rice growth. The objective of this study was to determine the best water management to reduce concentration of Fe in recently rice field. The experiment was designed in completely randomized design with seven treatments and three replicates. The treatment consisted of continous water-logged, 1 week water-logged 1 week dried, 2 weeks water-logged 2 weeks dried, 3 weeks water-logged 3 weeks dried, 1 week dried 1 week water-logged, 2 weeks dried 2 weeks water-logged, 3 weeks dried 3 weeks water-logged. The results showed that the water management with water-logged and dried the soil could reduce Fe concentration about 720 1882 ppm. The best water management to reduce Fe concentration was 3 weeks water-logged 3 weeks dried with Fe concentration in the soil was 376 ppm. Key words : Water management, Iron, recently rice field
PENGARUH PENGOLAHAN TANAH DAN PEMBERIAN MULSA ORGANIK TERHADAP PERUBAHAN BEBERAPA SIFAT KIMIA TANAH PSAMMENT DAN HASIL JAGUNG MANIS (Zea mays Saccharata Sturt) Ruhaimah Ruhaimah; Herviyanti Herviyanti; Adrinal Adrinal; Giska Oktabriana
Jurnal Solum Vol 7, No 2 (2010): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.8 KB) | DOI: 10.25077/js.7.2.124-130.2010

Abstract

A research about effect of soil managment and organic mulch application on soil physical properties of psamment and conr production was conducted in Korong Muaro, Nagari Sunur Kecamatan Nan Sabaris Kabupaten Padang Pariaman, as well as in soil laboratory, Agriculture Faculty, Andalas University Padang.  This research was done from April – October 2009.  The objective of the research was to identify interaction effect between soil cultivation and organic mulch application on chemical properties of psamment and production of sweet corn.  This research was designed in two factors: 3 x 4 with three replications. The first factor was soil cultivation which consisted of 3 levels (Po = No-till, P1 = Minimum tillage, P2 = Conventional till).  The second factor was organic mulch application, which consisted of four levels: Z = without mulch addition, T = Titonia for 8 ton DW/ha, K = Chromolaena for 8 ton DW/ha, J = straw 8 ton DW/ha. The result showed that soil cultivation combined with rice straw mulch application could increase N, P, K elements in soil.  Soil N content increased from 0,17 % to  0,28 %, avail-P from 52,57 ppm to 88,60 ppm, and K-exch from 0,64 me/100g to 2,35 me/100g, however, minimum tillage gave the highest yield which was 7,68 ton weight  of corn seeds + the stalk /hektar, and rice straw mulch showed the highest among the organic mulch applied, which was 8,85 ton/ha.Keywords: Soil cultivation, organic mulch, psamment, sweet corn