Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Jurnal Biologi Tropis Journal of Soil Quality and Management
Mulyati
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Efektivitas Berbagai Dosis Pupuk Phonska Pada Media Tanam Buatan Terhadap Ketersediaan P dan K Tertukar Tanah Serta Hasil Pakcoy Anggi Rahayu; Raden Sri Tejowulan; Baharuddin Abu Bakar; Mulyati
Journal of Soil Quality and Management Vol. 2 No. 2 (2023): Jurnal Soil Quality and Management
Publisher : Department of Soil Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mining activities generally leave infertile residual soil, so a strategy needs to be carried out, namely through artificial planting media (MTB) innovations. The purpose of this study was to determine the fertility rate of MTB, the effect of phonska fertilizer doses on the availability of P and K mixed in soil, growth and yield of Pakcoy and the correlation of the level of correlation regression between the availability of P and K mixed in planting media and the wet body weight of Pakcoy plants. The research method used was the experimental method, with a completely randomized design (CRD) of 8 treatments, as follows: P0 = 5 kg of ex-mining soil without additional treatment (control), P1 = MTB (1.6 kg of ex-mining soil + 1 kg of goat manure + 0.3 kg of rice husk biochar) without phonska, P2 = MTB + 20% phonska, P3 = MTB + 40% phonska. P4 = MTB + 60% phonska. P5 = MTB + 80% phonska, P6 = MTB + 100% phonska, P7 = 5 kg of ex-mining land + 100% phonska. Each treatment was repeated 3 times to obtain 24 experimental pot units. Parameters measured were soil texture, available P, exchangeable K, growth, pakcoy yield and other parameters. The results of this study resulted in an additional dose of Phonska fertilizer of 180 kg per hectare (60% Phonska) giving the best plant growth and yields, namely plant height (18.5 cm), number of leaves (19 strands), and wet chestnut weight of 92.6 grams per polybag . The correlation between available-P and K-exchanged soil and fresh plant weight gave a very strong correlation with a coefficient of determination of 0.99 for available-P and 0.85 for K-exchanged. The addition of goat manure and rice husk biochar can improve soil quality and provide maximum results for the growth and yield of pakcoy and can minimize the use of inorganic fertilizers.
Remediation of Ex-Unlicensed Gold Mining Using Rice Husk Biochar: its Effect on Reducing Mercury Levels Riza Hamkary Salam; Taufik Fauzi; A. A. Ketut Sudharmawan; Mulyati; Suwardji
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.6063

Abstract

: The dangers of mercury in nature cause negative impacts on the environment and humans. The nature of mercury is bioaccumulative and toxic, and it cannot be degraded quickly but only through valence transformation. One effort that can be made to reduce the level of toxicity from mercury is to use biochar as an adsorbent agent in the soil. This article's goal is to review data regarding the use of biological charcoal (biochar) as a soil adsorbent for mercury. In order to clean up soil that has been contaminated with mercury (Hg), rice husk biochar plays a crucial function. Other than that, by using these organic materials instead of synthetic ones, soil production can be increased while environmental impact is reduced by 56%. Mercury is absorbed by biochar through a number of different mechanisms, including: (1) electrostatic bonds; (2) K+ and Na+ with Hg2+ and Hg+ ions simultaneously; (3) covalent reduction of mercury from Hg2+ to Hg+ and Hg0; (4) formation of a mineral complex (Hg2(OH)2) through precipitation of Hg2+ with carboxyl groups, such as lactones; and (5) complexation reactions on oxygen-containing functional groups such as - In comparison to soil alone, the use of biochar along with other organic elements can boost the capacity of heavy metal adsorption. With this combination, mercury levels were reduced to 12.45 ppm while soil pH increased dramatically from 0.3 to 1.33 units, near to neutral.
Co-Authors A. A. Ketut Sudharmawan Anggi Rahayu Baharuddin Abu Bakar Raden Sri Tejowulan Riza Hamkary Salam Suwardji Taufik Fauzi