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All Journal Journal of Tropical Soils Caraka Tani - Agriculture Science Journal Caraka Tani: Journal of Sustainable Agriculture
Jauhari Syamsiyah
Soil Science Department, Faculty of Agriculture, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Environmental Science

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DAMPAK ERUPSI GUNUNG MERAPI TERHADAP LAHAN DAN UPAYA-UPAYA PEMULIHANNYA Rahayu, Rahayu; Ariyanto, Dwi Priyo; Komariah, Komariah; Hartati, Sri; Syamsiyah, Jauhari; Dewi, Widyatmani Sih
Caraka Tani - Jurnal Ilmu Ilmu Pertanian Vol 29, No 1 (2014): Articles in Press
Publisher : Caraka Tani - Jurnal Ilmu Ilmu Pertanian

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PELINDIAN UNSUR KALIUM (K) DAN NATRIUM (Na) MATERIAL VULKANIK HASIL ERUPSI GUNUNG MERAPI 2010 (Simulasi Laboratorium) Sanjaya, Taufiq Perak; Syamsiyah, Jauhari; Ariyanto, Dwi Priyo; Komariah, Komariah
Caraka Tani - Jurnal Ilmu Ilmu Pertanian Vol 29, No 2 (2014)
Publisher : Caraka Tani - Jurnal Ilmu Ilmu Pertanian

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This research was conducted at the Greenhouse Laboratory of the Faculty of Agriculture, Sebelas Maret University Surakarta, in March 2011. The aim of the study was to determine the relationship between the rainfall (synthetic) the number of elements Potassium (K) and Sodium (Na) were leached in volcanic material from the eruption of Mount Merapi. This study used artificial rainfall simulation approach  to treatment is based on the phenomenon of the eruption of Mount Merapi, Yogyakarta, Central Java by examining the leaching elements Sodium (Na) and Potassium (K) are swapped in the above-ground volcanic material Andisol. The experiments in this study using a completely randomized design (CRD) consisting of 3 to 5 treatments the sample depth artificial rain (water sprinkling) in 3 replications, namely 1 (22 mm x 1 day (22 mm)), 2 (22 mm x 10 days (220 mm)), 3 (22 mm x 20 days (440 mm)), 4 (22 mm x 30 days (660 mm)), 5 (22 mm x 45 days (990 mm)), and control ( 45 days field) with 3 replicates each. The variables measured were pH H2O, available K and Na, K and Na total, CEC, texture. Analysis of the data using the F test at the level of 95% or Kruskal-Wallis, to compare the mean between treatments using DMR test at the level of 95% or Mood Median, whereas to determine the relationship between variables used correlation test. The results showed that administration of rainfall of 22 mm / day is able to affect the leaching of potassium and sodium in the volcanic material from day 10. Leaching was significantly visible on day 30 with a decrease in available K and Na volcanic material at a depth of 0-15 cm in diameter (K 23.08%) (23.08% Na) and at a depth of 15-30 cm (K 21, 42%) (23.08% Na), and the addition of K and Na are available at a depth of >30 cm in the form of land Andisol (K 16.67%) (23.53% Na) from the previous treatment.
DAMPAK ERUPSI GUNUNG MERAPI TERHADAP LAHAN DAN UPAYA-UPAYA PEMULIHANNYA Rahayu, Rahayu; Ariyanto, Dwi Priyo; Komariah, Komariah; Hartati, Sri; Syamsiyah, Jauhari; Dewi, Widyatmani Sih
Caraka Tani: Journal of Sustainable Agriculture Vol 29, No 1 (2014): March
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.935 KB) | DOI: 10.20961/carakatani.v29i1.13320

Abstract

The eruption of Merapi mountain has primary and secondary hazard and may damage to the land. In detail, the hazards are land degradation is a loss of some or many of germplasm and changes in plant biodiversity. The others hazard including loss of water catchment areas, the destruction of forests, and even the closing of the water source, as well as the loss of water channels. The burried of soil and soil formation inhibition were caused by the repeated eruptions of Merapi, beside the loss of roads access to agricultural land and loss of land ownerships boundaries by the eruption and cool lava. Materials of eruption are sand and pyroclastic materials, as well as the nature of cementation require special techniques and technology to use the land as new farmland. Land restoration efforts can be done with the land management by reforestation on government-owned land for water catchment function, agroforestry forage grass based, grazing field on land owned by the village and residents, with the use of organic materials in the eruption sandy soil ameliorant.
The Effects of Mixed Source Fertilizer Application on Vertisol Fertility and Growth of Mustard Syamsiyah, Jauhari; Sumarno, Sumarno; Suryono, Suryono; Muhamat Rajab, Nur Echsan; Aryaningrum, Ida
JOURNAL OF TROPICAL SOILS Vol 22, No 3: September 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i3.139-148

Abstract

Soil fertility is a crucial factor determining the growth and yield of plants. The increase of nutrient content and availability in soil can be achieved by fertilization. A field experiment was conducted using a Randomized Completely Block Design (RCBD) with two factors and three replications in order to study the effects of Mixed Source of Fertilizer (MSF) application on the nutrient contents in Vertisol and its relationship to the growth and yield of mustard. The first factor was the three MSF formulas (F1, F2, F3) and second factor was the doses of MSF (0; 2.5; 5.0; 7.5; 10 Mg ha-1) applied to the soil. At the end of the experiment, the soil pH, CEC, organic-C, total-N, available-P and exchangeable-K contents were measured. The results show that there are no significant differences on the soil chemical characteristics, such as pH, organic-C content, available-P, exchangeable-K, -Ca and -Mg measured after application of different MSF formulas to the soil. Meanwhile, the increase of MSF doses applied to the soil significantly increases organic-C content, total-N, available-P and exchangeable-K in the soil. The significant increase of available-P (by 29.13%) and total-N (by 24.1%) occured after application of MSF at 5.0 Mg ha-1 and the increase of exchangeable-K (by 50%) is achieved after application of 7.5 Mg ha-1, in comparison to that without MSF application. The height and fresh weight of mustard increase in accordance with the increase of MSF doses applied. The application of 10.0 Mg ha-1 MSF results in the highest height and fresh weight of the mustard up to 63.9% and 620%, respectively. The height and fresh weight of mustard are positively correlated to the total-N, available-P and exchangeable-K in the soil. The MSF is an alternative fertilizer that can be used to improve Vertisol fertility and plant growth. 
Co-Authors Aryaningrum, Ida Dwi Priyo Ariyanto Komariah Komariah Muhamat Rajab, Nur Echsan Rahayu Rahayu Sri Hartati Sumarno . Suryono Suryono Taufiq Perak Sanjaya, Taufiq Perak Widyatmani Sih Dewi