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The Effect of Differences in Light Color Filters on Potato (Solanum tuberosum) Shoot Growth Fitriani, Salma; Khairunnisa, Nabila; Lafairuz, Nisrina Najla; Putri, Savitri Novantira; Syahrani, Najwa; Setiawan, Gilang; Fitriana, Devita; Rahman, Taufik; Suwandi, Tri
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Publisher : Universitas Pendidikan Indonesia and Konsorsium Biologi Indonesia

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Abstract

Potato (Solanum tuberosum) is a plant that plays an important role as a source of food and carbohydrates for the world community after maize, wheat, and rice. The lack of sufficient demand for low yields in Indonesia can be caused by many factors, one of which is environmental factors, which greatly affect the process of growing potatoes. They are temperature, duration of irradiation, light intensity, growing media, and humidity. Because the growth and process of photosynthesis in plants can be affected by the light factor, therefore our aim in conducting this research was to determine the effect of different light color filters on potato mass, number of shoots, shoot length, number of roots, and root length. The research method used was a completely randomized design (CRD) using 4 (four) treatments. The treatment that was given was P1 on potato shoots which were given a clear plastic filter cover (control), P2 with a blue plastic filter cover, P3 with a plastic filter cover, and P4 which was green. Each treatment was repeated three times for 2 weeks with observations every 2 days. The parameters observed were potato mass, number of shoots, shoot length, number of roots, and root length. The data is then analyzed descriptively using the average and standard deviation. There are differences in the average mass of potatoes, number of shoots, shoot length, number of roots, and root length given different light color filter treatments. The color filter treatment that gives the best results for all parameters is the blue filter.
Pendampingan Belajar melalui Modul Etnomatematika Kue Katirisala dan Pawa pada Pemahaman Konsep Bangun Ruang Khairunnisa, Nabila; Amaliyah, Aisyah; Nur, Fitriani; Mattoliang, Lisnasari; Kusumayanti, Andi
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2026)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v7i2.16857

Abstract

Pembelajaran matematika pada jenjang sekolah menengah pertama menuntut pemahaman konsep yang kuat, khususnya pada materi bangun ruang. Namun, peserta didik masih mengalami kesulitan dalam mengidentifikasi unsur bangun ruang dan memvisualisasikan bentuk tiga dimensi karena pembelajaran yang bersifat abstrak dan kurang kontekstual. Kegiatan pengabdian ini bertujuan untuk meningkatkan pemahaman konsep bangun ruang melalui modul ajar berbasis etnomatematika menggunakan kue Katirisala dan Pawa yang dipadukan dengan pendampingan belajar terstruktur. Kegiatan dilaksanakan di sebuah pondok pesantren swasta di Kota Makassar dengan melibatkan 17 peserta didik kelas IX. Metode yang digunakan adalah pendampingan belajar yang meliputi tahap perencanaan, pelaksanaan, dan evaluasi. Peserta didik mempelajari modul ajar cetak dan memperoleh bimbingan langsung melalui diskusi serta tanya jawab. Data dikumpulkan melalui tes hasil belajar dan angket respons peserta didik serta dianalisis secara deskriptif kuantitatif. Hasil kegiatan menunjukkan bahwa pemahaman konsep bangun ruang peserta didik meningkat, terutama dalam mengenali unsur-unsur bangun ruang dan memvisualisasikan bentuk geometri. Respons peserta didik dan guru terhadap penggunaan modul berbasis budaya lokal menunjukkan hasil positif. Kegiatan ini menyimpulkan bahwa modul etnomatematika yang dikombinasikan dengan pendampingan belajar efektif mendukung pembelajaran geometri yang bermakna di lingkungan pesantren.
Analysis of the Difference in Operational Costs to Production Costs in the Free Nutritious Food (MBG) Program at PT Cibatu Perkasa Abadi Khairunnisa, Nabila; Gumelar, Taofik Muhammad
Society : Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2026): Maret
Publisher : Edumedia Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55824/tk52bv79

Abstract

This report presents the results of internship activities conducted by the author at PT Cibatu Perkasa Abadi with the title Analysis of the Difference in Operational Costs to Cost of Production in the Free Nutritious Food (MBG) Program at PT Cibatu Perkasa Abadi. Observations during the internship activity showed that the management of operational costs in the MBG Cibatu, Ciaul, and Cibadak kitchens still faced differences between the Cost Budget Plan (RAB) and the actual cost. The difference in costs is caused by fluctuations in the price of raw materials, changes in the number of beneficiaries, and different transportation costs at each kitchen location. This condition has a direct impact on changes in the Cost of Production (HPP) of the food produced. During the internship program, the author was directly involved in recording daily operational costs, preparing RAB, calculating HPP, and analyzing the cost difference between budget and realization. This experience provides a real understanding of the importance of cost control, thorough financial recording, and regular budget evaluation to maintain cost efficiency. It is recommended that companies regularly update their budgets, strengthen supervision of cost recording, and improve coordination between operational and financial departments to minimize cost differences and maintain the stability of the MBG Program's HPP.