Pengaruh Pemberian Pupuk NPK dan Kompos Kulit Kopi Terhadap Pertumbuhan dan Hasil Tanaman Kentang (Solanum Tuberosum L.)

Kentang merupakan salah satu komoditas penting dan mendapat prioritas untuk dikembangkan karena bernilai ekonomi tinggi serta mempunyai potensi untuk mendukung diversifikasi pangan, namun produksinya masih tergolong rendah karena masih belum optimal penggunaan teknologi budidaya. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk NPK dan kompos kulit kopi terhadap pertumbuhan dan hasil tanaman kentang. Penelitian dilaksanakan di Kampung Tingkem Bersatu Kecamatan Bukit Kabupaten Bener Meriah dengan ketinggian tempat 1300 m dpl. Bahan utama yang digunakan dalam penelitian ini adalah bibit tanaman kentang varietas Granola, pupuk NPK dan kompos kulit kopi. Penelitian ini menggunakan rancangan acak kelompok (RAK) faktorial dengan dua faktor yaitu faktor pupuk NPK (N) yang terdiri dari empat taraf (0, 1, 1,5 dan 2 ton/ha) dan faktor kompos kulit kopi (K) yang terdiri dari tiga taraf (0, 15 dan 20 ton/ha). Hasil penelitian menunjukkan terdapat interaksi yang sangat nyata pada pemberian NPK dengan kompos kulit kopi terhadap tinggi tanaman umur 30 HST dan bobot umbi tanaman sampel, berinteraksi nyata terhadap tinggi tanaman umur 45 HST dan indeks panen. Pemberian pupuk NPK secara tunggal berpengaruh nyata terhadap bobot umbi tanaman sampel dan berpengaruh sangat nyata terhadap tinggi tanaman umur 30 HST, 45 HST dan 60 HST, kandungan klorofil, jumlah umbi, bobot umbi perplot dan indeks panen. Pemberian kompos kulit kopi secara tunggal berpengaruh sangat nyata terhadap kandungan klorofil dan berpengaruh nyata terhadap bobot umbi perplot. Interaksi antara pupuk NPK dosis 2 ton/ha dan kompos kulit kopi dosis 20 ton/ha memberikan hasil terbaik terhadap tinggi tanaman umur 30 HST dan bobot umbi perplot

Pemanfaatan Salvinia molesta, Marsilea crenata dan Azolla pinnata Sebagai Agent Fitoremediasi Insektisida Diazinon

Bioremidiasi dapat mengunakan tumbuhan dalam penuruanan polutan yang ada dilingkunganm. Tujuan penelitian ini untuk mengetahui potensi tumbuhan Salvinia molesta, Marsilea crenata dan Azolla pinnata sebagai agent fitoremidiasi. Penelitian ini dilakukan pada bulan Juni 2022 di Laboratorium Terpadu, Universitas Islam Malang, dengan mengunakan tanaman semanggi (Marsilea crenata), azolla (Azolla pinnata) dan apu-apu (Salvinia molesta). Pestisida yang digunakan adalah Diazinon 600 EC, dengan rancangan acak lengkap dengan ulangan sebanyak tiga kali dengan dua konsentrasi berbeda. Parameter yang diamati adalah pH, TDS dan EC. Hasil analisis tiga jenis tanaman dan beda konsentrasi dengan mencari Mean dan Standart Devisiasi diperoleh hasil pengukuran pH dengan beda konsentrasi yaitu pada tanaman Ap/Azollaprinata (K1: 6,92 ± 0.20 dan K2: 6,83 ± 0.13), tanaman Mc/Marsileacrenata (K1: 6,84 ± 0.19 dan K2: 6,87 ± 0.18) dan tanaman P/Salviniamolesta (K1: 6,78 ± 01,4 dan K2: 6,90 ± 0.18). sehingga menunjukkan semakin tinggi konsentrasi larutan, maka akan semakin cepat terjadinya layu pada ketiga jenis tanaman

Screening of Aloe vera medium with different carbon and nitrogen sources for Lactobacillus acidophilus cultivation using fractional factorial design (FFD)

The aim of this research was to optimize the cultivation medium for economic production of a probiotic bacterium, Lactobacillus acidophilus using Aloe vera medium with different carbon (glucose, fructose and sucrose) and nitrogen (yeast extract, meat peptone, ammonium sulphate and urea) sources. Screening step was performed using 28 1/16 fractional factorial design (FFD) to investigate the significant effect of 8 factors used in this study on the biomass production expressed in log10 cfu/ mL. Biomass production was measured based on total plate count method for enumeration of viable cells. In the process of screening, the concentration range of Aloe vera, carbon and nitrogen used were from 1-2% (w/v), 1-2% (w/v) and 0.5-1% (w/v), respectively. The maximum biomass production was obtained with 11.816 log10 cfu/mL. It was shown that glucose, Aloe vera gel, combination of glucose and fructose and combination of glucose and ammonium sulphate were resulted significant (p <; 0.05) effect towards to the response, biomass production

Relationship between Drug Craving and HighRisk Situations for Relapse Among Inmates with Substance Abuse Issues

Introduction: Relapse occurs when there is a strong desire for repeating drug-seeking behaviour due to high-risk situations such as social environment, interpersonal conflict, and negative emotions. Objective: This article aims to analyse the relationship between drug craving and high-risk situations for relapse among inmates with substance abuse issues serving in Malaysian prisons. Material and Methods: This study was conducted using a quantitative approach. A total number of 407 inmates with substance abuse issues were randomly selected as respondents of the study. The data were analysed using descriptive and inferential analysis via SPSS software. Results: The result indicates that there is a positive and significant moderate relationship between drug craving and high-risk situations for relapse (r=0.452, p˂0.01). Therefore, it can be concluded that drug craving is associated with high-risk situations for relapse among inmates with substance abuse issues. Conclusion: The findings of this study is expected to provide implications to the stakeholders such as counsellors and drug rehabilitation officers to improvise the existing rehabilitation modules and programs to address relapse issues among inmates in Malaysia

Jet speeds in wide angle tailed radio galaxies

The definitive version is available at www.blackwell-synergy.com. Copyright Blackwell Publishing DOI : 10.1111/j.1365-2966.2006.10155.xPeer reviewe

Recovery of gold(III) from an aqueous solution onto a durio zibethinus husk

The recovery of gold(III) ions from an aqueous solution onto a durio zibethinus husk (DZH) was examined after varying pH, contact time, adsorbent dosage, initial Au(III) concentration, and temperature. The functional groups of DZH were analyzed by FTIR and Au(III) recovery onto DZH was verified by FESEM–EDX and XRD analysis. Adsorption equilibrium isotherms and kinetics of the DZH were studied using Freundlich and Langmuir models, as well as pseudo first-order, second-order kinetic and intraparticle diffusion equations. The experimental data obtained with DZH fitted best to the Langmuir isotherm model and exhibited a maximum adsorption capacity (qmax) of 1724 µmol g-1. The data followed the pseudo second-order equation. The activation energy of the adsorption (Ea) was estimated to be 38.5 kJ mol-1. Thermodynamic parameters, such as changes in enthalpy, entropy and Gibbs free energy, showed that the adsorption is exothermic, spontaneous at low temperature, and is a chemisorption process. These results indicate that DZH adsorbs efficiently and could be used as a low-cost alternative for the adsorption of Au(III) in wastewater treatment

ICT acceptance and usage: a proposed model for ICT teacher training

ICT is crucial to educational development of any nation, as it improves the quality of teaching, learning and research in the university. ICT training is basically an integrative learning process to achieve a one point agenda of making a staff able to deliver lectures and carryout academic and administrative duties using available computing resources. Given that the academicians are the key to effective use of information technologies in the university education system, it is important to understand their behavioral intention towards IT. Teachers are widely believed to be the key agents of any educational change. This paper focuses on a proposed model for ICT teacher training. It suggests that ICT experts should be engaged in training and re-training of teachers, within a time frame. The paper suggests that, careful attention should be given to both levels of skills sought by the teachers, both ICT-related skills and the pedagogical use of ICT. The proposed model for ICT teacher training will assist the experts to be focused

Cross-layer routing approach in highly dynamic networks

Vehicular networks are highly mobile wireless networks that can provide wide variety of services and applications such as public safety communications, crash avoidance, multimedia and Internet access in highways. Designing routing algorithm in vehicular network is a challenging task due to rapidly changing topology and high speed mobility of vehicles. One of the critical issues of vehicular network is frequent path disruptions caused by high speed mobility that leads to broken links which results in low throughput. This poses complex challenge in ensuring quality of service (QoS). A lot of research around the world is being conducted to define the standards for vehicular communication. In this paper, we study the effect of different duration of transmitting packet and compare different packet size on sending and received packet rate in IEEE 802.16j MMR networks using NCTUns. Meanwhile, cross-layer routing approach is proposed to overcome the challenge. The routing approach is expected to significantly improve QoS in vehicular networks

Interactions of radio galaxies and the intracluster medium in Abell 160 and Abell 2462

Peer reviewe