Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Journal of Degraded and Mining Lands Management Journal of Education and Pedagogy
Agustin, Widia
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Languange, Linguistic, Communication & Media Other

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

Found 2 Documents
Search

 1 
Effect of cogongrass biochar enriched with nitrogen fertilizer dissolved in seaweed liquid extract on soil water content of Ultisol Kilowasid, Laode Muhammad Harjoni; Alam, Syamsu; Rakian, Tresjia Corina; Ansar, Nurul Awalia; Nurfadillah; Ramdan, Nurfatihah Hijrah; Jaya, Irfan; Suryana; Agustin, Widia; Rahni, Nini Mila; Mashuni; Safuan, La Ode
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.5585

Abstract

Ultisol dry land is characterized by significantly low organic carbon content, an important factor influencing soil water content and physico-chemical dynamics. The addition of N fertilizer dissolved in seaweed liquid extract as an enrichment solution can change the character of biochar. Therefore, this study aimed to analyze the characteristics of cogongrass biochar enriched with dissolved N fertilizer in seaweed extract of different species and assess its impact on soil water content in Ultisol. Urea was used as a nitrogen source, and biochar enriched with N fertilizer dissolved in seaweed liquid extract from Kappapychus alvarezii, Sargassum sp., and Ulva lactuca was tested. Biochar dose used was 20% of soil weight with a 10% extract concentration for each type. Furthermore, five-level treatments were tested in a pot experiment, namely (i) without biochar, (ii) biochar unenriched, (iii) enriched with N fertilizer dissolved in K. alvarezii extract, (iv) enriched with N fertilizer dissolved in Sargassum sp. extract, and (v) biochar enriched with N fertilizer dissolved in U. lactuca extract. Each treatment was repeated three times, following a randomized block design. The results showed that cogongrass biochar enriched with N fertilizer dissolved in seaweed extract had a more amorphous surface morphology structure. The proportion of elements and functional groups in cogongrass biochar changed. Enriched biochar increased Ultisol moisture levels, but water holding capacity and retention were lower than the unenriched sample.
Peningkatan Keterampilan Menulis Ringkasan Teks Eksplanasi Menggunakan Model SQ3R Berbantuan Mind Mapping pada Siswa Kelas IX-I SMP Negeri 13 Surabaya Agustin, Widia; Pranoto, Agung
Journal of Education and Pedagogy Vol. 2 No. 1 (2025): April
Publisher : CV Rena Cipta Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62354/jep.v2i1.38

Abstract

Penelitian ini bertujuan untuk meningkatkan kemampuan menulis ringkasan teks eksplanasi menggunakan model SQ3R berbantuan mind mapping. Metode yang digunakan adalah Penelitian Tindakan Kelas (PTK) dengan siklus Arikunto yang terdiri dari dua siklus. Subjek penelitian adalah siswa kelas IX-I SMPN 13 Surabaya. Teknik pengumpulan data mencakup observasi, wawancara, tes, dokumentasi, dan catatan lapangan dengan instrumen observasi dan tes. Hasil penelitian menunjukkan adanya peningkatan keterampilan menulis ringkasan. Pada siklus I, persentase keterampilan siswa sebesar 73,35 persen, meningkat menjadi 90,1 persen pada siklus II. Pada siklus I, siswa masih mengalami kesulitan dalam meringkas teks dan cenderung menuliskan ulang keseluruhan isi teks. Namun, pada siklus II, siswa mulai memahami konsep meringkas dengan baik dan dapat menuliskan poin-poin penting dalam teks eksplanasi secara lebih sistematis. Peningkatan ini menunjukkan bahwa model SQ3R berbantuan mind mapping efektif dalam membantu siswa memahami struktur teks eksplanasi serta meningkatkan kemampuan menulis ringkasan dengan lebih ringkas dan tepat.
Co-Authors Agung Pranoto Ansar, Nurul Awalia JAYA, IRFAN La Ode Safuan Laode Muhammad Harjoni Kilowasid Mashuni Nini Mila Rahni Nurfadillah Ramdan, Nurfatihah Hijrah Suryana SYAMSU ALAM TRESJIA CORINA RAKIAN, TRESJIA CORINA