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Jurnal Solum
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 2 Documents
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Search results for , issue "Vol 17, No 1 (2020)" : 2 Documents clear
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.477 KB) | DOI: 10.25077/jsolum.17.1.1-11.2020

Abstract

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
PENGARUH APLIKASI BIOCOCOTIN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN SAWI PADA TANAH PASIR PESISIR PANTAI Anandyawati Anandyawati; Merlian Zikri; Eko Sumartono; Ridha Rizki Novanda; Amir Husaini Karim Amrullah; Ari Anggoro
Jurnal Solum Vol 17, No 1 (2020)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (60.792 KB) | DOI: 10.25077/jsolum.17.1.12-20.2020

Abstract

The great potential in coastal sandy lands is followed by various problems and limiting factors that cause the acceleration of land use for agricultural purpose run very slowly. To overcome these limiting factors, appropriate modification and implementation of innovation is needed, namely the providing of soil conditioning materials, such as organic matter. One source of organic material that is still very rarely used, affordable, easy and cheap and simple in its application is the waste of coconut powder and human waste which we call biococotin. Providing of biococotin in coastal sandy lands decreases basic pH near neutral, increasing levels of N, P, K, C-Organic and cation exchange capacity has decreased from 7.20 to 6.40%. N levels increased from 0.021% to 0.17%, P-available increased from 2.52 ppm to 20.13 ppm, K levels increased from 2.52 cmol (+) to 9.35 cmol (+) and CEC increased from 4, 04 cmol (+) / kg becomes 7.07 cmol (+) / kg. The best growth parameters (plant height, number of leaves, longest leaf length and longest leaf width) are shown by treatment 2 which is half the dose of NPK and biococotin. The best average planting weight and yield per ha is shown by treatment 2, which is half the dose of NPK and biococotin, which is 44.03 grams / plant and 26.41 tons / ha bicocotin. Keywords : Biococotin, Coastal area, Cocopeat

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