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The Effect of doses of Natural Super Phospate Fertilizer and Potassium on the Growth and Yield of Peanut Plants (Arachis hypogaea L.) Husainah Yusuf; Jailani; Evi Apriana; Elvitriana; Ruhul Maghfirah
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.7898

Abstract

The purpose of the study was to determine the proper dosage of natural phosphate and potash fertilizers for peanut growth and yield. This research was conducted in Tanjung Village, Darul Hasanah District, Southeast Aceh Regency from October to December 2020. This study used 3x3 factorial randomized block design (RBD) with 3 repeats. The results showed that the dose of Natural Super Phosphat fertilizer had a significant effect on the weight of 100 dry seeds of peanut plants.  The highest growth and soaking of dried peanut seeds tends to be obtained at a dose of Natural Super Phospat 100 kg P205 I ha. The dose of potash fertilizer had no significant effect on plant height at the age of 15, 30 and 45 watersheds, the number of well-fused pods per clump, the number of empty pods per clump, the weight of dry pods per clump, the weight of 100 dry seeds, the weight of dry seeds per net plot and the weight of dry seeds per hectare. Better growth and yield of dry seeds in peanut plants tend to be obtained with a dose of potash fertilizer of 75 kg K20 I ha. There is an insignificant interaction between the dose treatment of Natural Super Phosphate fertilizer and the dose of potassium fertilizer.
Application of the Project Based Learning (PjBL) Model on the Concept of Global Warming to Improve Students' Knowledge of State Senior High School 1 Bandar Bener Meriah Dewi Murni; Jailani; Nurul Akmal; Evi Apriana; Fakhrurrazi
Jurnal Penelitian Pendidikan IPA Vol 12 No 4 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i4.14654

Abstract

Project Based Learning (PjBL) is a learning model that emphasizes active student involvement in the learning process through contextual and meaningful project activities. This study aims to analyze the application of the Project Based Learning (PjBL) model to the concept of global warming and its impact on the knowledge of tenth-grade students. This study used a quantitative approach with a quasi-experimental method and a pretest–posttest control group design. The research sample consisted of two classes: class IA X-1 with 22 students as the experimental class and class IA X-2 with 21 students as the control class, resulting in a total sample of 43 students. The experimental class was given treatment in the form of learning using the PjBL model, while the control class used conventional learning. The research instrument was a knowledge test administered before and after the treatment. Data were analyzed using descriptive statistics and N-Gain calculations. The results showed that there was a difference in knowledge gain between the experimental and control classes. The increase in student knowledge in the experimental class was higher than in the control class, with the N-Gain results being in the moderate to high category. Based on these results, it can be concluded that the implementation of the Project Based Learning (PjBL) model is effective in increasing student knowledge on the concept of global warming.