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All Journal Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Journal of Instructional Mathematics
Nurul Hidayah
Universitas Jambi
Agriculture, Biological Sciences & Forestry Education Mathematics

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Pengaruh Pupuk Organik Fermentasi Padat Terhadap Pertumbuhan Dan Hasil KedelaI (Glycine max (L) Merrill) Nurul Hidayah; Akmal Akmal; Ardiyaningsih Puji Lestari
Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Vol. 4 No. 2 (2021): Jurnal Agroecotania: Publikasi Nasional Ilmu Budidaya Pertanian
Publisher : Jambi University, Fakultas Pertanian, Program Studi Agroekoteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/agroecotania.v4i2.20437

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh pupuk organik fermentasi padat terhadap pertumbuhan dan hasil kedelai serta mengetahui dosis pupuk organik fermentasi padat yang terbaik untuk pertumbuhan dan hasil kedelai. Penelitian dilaksanakan di Teaching and Research Farm Fakultas Pertanian Universitas Jambi. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) yang terdiri dari lima perlakuan yaitu tanpa pupuk organik fermentasi padat, pupuk organik fermentasi padat 5 ton/ha, 10 ton/ha, 15 ton/ha dan 20 ton/ha. Variabel yang diamati yaitu tinggi tanaman, jumlah bintil akar, jumlah bintil akar efektif, bobot kering akar, bobot kering tajuk, jumlah cabang primer, jumlah polong per tanaman, jumlah polong berisi per tanaman, bobot 100 biji dan hasil. Hasil penelitian menunjukkan bahwa Pemberian pupuk organik fermentasi padat pada dosis yang berbeda memberikan pengaruh yang nyata terhadap jumlah bintil akar efektif, bobot kering akar dan bobot 100 biji. Sedangkan pada variabel tinggi tanaman, jumlah bintil akar, bobot kering tajuk, jumlah cabang primer, jumlah polong per tanaman, jumlah polong berisi per tanaman dan hasil kedelai pengaruhnya tidak nyata. Tanaman kedelai yang diberikan pupuk organik fermentasi padat dengan dosis 10 ton/ha menghasilkan bobot 100 biji terbaik.
Uncovering Gaps in Deductive Geometry Thinking: Rasch-Based Evidence from Students’ Work on Quadratic Functions Fiki Alghadari; Bella Arisha; Nurul Hidayah; Saparuddin Saparuddin; Budi Eka Dharma
Journal of Instructional Mathematics Vol. 6 No. 2 (2025): Innovative Approaches to Mathematical Understanding and Literacy
Publisher : Pendidikan Matematika STKIP Kusuma Negara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37640/jim.v6i2.2510

Abstract

The deductive structure is fundamental in mathematics, but students often struggle to derive logical consequences when constructing proofs or engaging in the bridging process. This study analyzed students’ ability to deduce logical relationships between properties in geometric thinking on quadratic functions. The participants were students (N=139) from the mathematics education program. The properties of quadratic functions and their interrelationships contained in the premises represented students’ responses to the instrument. The responses were dichotomously coded based on the criteria of the carried-out deduction process and then evaluated using Rasch analysis. The findings revealed that, in general, the distribution of students’ ability levels was below most levels of the carried-out deduction process. Although a group of students had already reached the high-ability category, the overall distribution was still dominated by low-ability levels. Many students continued to face serious challenges in reaching the final stage of the deduction process—advanced premise integration and deductive synthesis—since most of them established relationships among properties merely from the given information. There were indications that learning experiences during higher education contributed positively to the improvement of students’ ability at the deduction level. The study recommends four steps to habituate students to the process of deduction.
Co-Authors Akmal Akmal Ardiyaningsih Puji Lestari Bella Arisha Budi Eka Dharma Fiki Alghadari Saparuddin Saparuddin