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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Penelitian Pertanian Terapan Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Agrotek UMMat Jurnal Pertanian Agros Jurnal Agrotek Tropika Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) Journal of Agriculture (JoA) Jurnal Riset Rumpun Ilmu Tanaman Jurnal Pengabdian Pada Masyarakat METHABDI Majalah Ilmiah METHODA International Journal of Multidisciplinary Approach Research and Science Indonesian Journal of Agriculture and Environmental Analytics Botani: Publikasi Ilmu Tanaman dan Agribisnis Tumbuhan : Publikasi Ilmu Sosiologi Pertanian dan Ilmu Kehutanan
Efbertias Sitorus
Universitas Methodist Indonesia
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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Journal : Jurnal Penelitian Pendidikan IPA (JPPIPA)

 1 
Effect of Fruit Pruning and Potassium Application on Growth and Production of Strawberry (Fragaria chiloensis). Efbertias Sitorus; Lince Romauli Panataria; Meylin Kristina Saragih; R. Lubis
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.4175

Abstract

This study aims to determine the effect of fruit pruning and application of Potassium on the growth and production of strawberry plants (Fragaria chiolensis). This study used a randomized block design (RBD) with 2 factors. The first factor was fruit pruning consisting of 4 levels: P0 = No pruning, P1 = 1 pruning, P2 = 2 pruning, P3 = 3 pruning. The second factor is Potassium fertilizer consisting of 4 levels: K0 = 0 g/plant, K1 = 2 g/plant, K2 = 4 g/plant, K3 = 6 g/plant. The observed variables were plant height (cm), flowering age (days), Fruit Weight (g), Fruit Volume (cm3), Sugar Content (%), Plant Wet Weight (g), and Plant Dry Weight (g). The results showed that pruning three fruits/plant increased plant height, fruit weight, fruit volume, sugar content, fresh weight and dry weight. Applying potassium fertilizer up to a dose of 6 g/plant can increase plant height, flowering time, fruit weight, fruit volume, sugar content, and wet and dry weight. Meanwhile, the interaction between fruit pruning and potassium application had no significant effect on all observed parameters.
Appplication of Biochar and Rice Husk Ash to sulfur Absorption, Growth and Production of Shallots Plant (Allium ascalonicum L.) Aritonang, Sri Pratiwi; Sianipar, Ebsan Marihot; Sitorus, Efbertias; Sianturi, Pahala LL
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11115

Abstract

Soil fertility decline and sulfur deficiency are major constraints in shallot (Allium ascalonicum L.) cultivation, especially in sandy soils with low cation exchange capacity. Biochar and rice husk ash are potential soil amendments known to improve soil structure, nutrient availability, and crop productivity. This study aimed to determine the effect of rice husk biochar and rice husk ash on the growth, yield, and sulfur uptake of shallots. A factorial experiment was conducted using a Randomized Group Design (RGD) with two factors: biochar and rice husk ash, each at three dose levels. Results showed that biochar application improved the number of leaves, number of tillers, and bulb weight per unit, while rice husk ash had a limited effect, mainly enhancing leaf number at early growth. No significant interaction between the two amendments was observed across measured parameters, including sulfur uptake. These findings suggest that biochar contributes more effectively to shallot growth and yield than rice husk ash under the tested conditions. Further studies are recommended to optimize the combined use of organic amendments and to explore their long-term effects on soil nutrient dynamics and crop performance.
Effect of Fruit Pruning and Potassium Application on Growth and Production of Strawberry (Fragaria chiloensis). Sitorus, Efbertias; Panataria, Lince Romauli; Saragih, Meylin Kristina; Lubis, R.
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.4175

Abstract

This study aims to determine the effect of fruit pruning and application of Potassium on the growth and production of strawberry plants (Fragaria chiolensis). This study used a randomized block design (RBD) with 2 factors. The first factor was fruit pruning consisting of 4 levels: P0 = No pruning, P1 = 1 pruning, P2 = 2 pruning, P3 = 3 pruning. The second factor is Potassium fertilizer consisting of 4 levels: K0 = 0 g/plant, K1 = 2 g/plant, K2 = 4 g/plant, K3 = 6 g/plant. The observed variables were plant height (cm), flowering age (days), Fruit Weight (g), Fruit Volume (cm3), Sugar Content (%), Plant Wet Weight (g), and Plant Dry Weight (g). The results showed that pruning three fruits/plant increased plant height, fruit weight, fruit volume, sugar content, fresh weight and dry weight. Applying potassium fertilizer up to a dose of 6 g/plant can increase plant height, flowering time, fruit weight, fruit volume, sugar content, and wet and dry weight. Meanwhile, the interaction between fruit pruning and potassium application had no significant effect on all observed parameters.
The Effect of NASA Liquid Organic Fertilizer and Chicken Manure on the Growth of Sweet Corn Plants (Zea mays saccharata Sturt) Sitorus, Efbertias; Sihombing, Parsaoran; Panataria, Lince Romauli; Saragih, Meylin Kristina
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7530

Abstract

This research aims to determine the effect of a combination of NASA POC and chicken manure on the growth and production of sweet corn (Zea mays saccharata Sturt). The research used a Randomized Group Design (RAK) with two treatment factors. The first factor is the administration of NASA Liquid Organic Fertilizer (A) consisting of 4 treatment levels, namely: A0 = 0 ml/liter of water (control), A1 = 2 ml/liter of water, A2 = 4 ml/liter of water and A3 = 6 ml /liter of water. The second factor is the provision of chicken manure (B) consisting of 3 treatment levels, namely: B1 = 2.25 kg/plot (7.5 tons/ha), B2 = 4.50 kg/plot (15 tons/ha) and B3 = 6.75 kg/plot (22.5 tons/ha). The results showed that giving NASA POC up to 6 ml/l of water significantly increased plant height, ear length, ear weight per plot and total dissolved solids. Providing chicken manure up to 6.75 kg/plot significantly increased plant height, ear length, weight per plot and total soluble solids. The interaction between NASA POC and chicken manure did not significantly affect plant height, ear length, weight per plot, or total dissolved solids.
Co-Authors Adventus Leo Gohan D.S Agnes Imelda Manurung Chichi J. Manalu Ebsan Marihot Sianipar Ebsan Sianipar Efendi Sianturi Elisabeth Surbakti Endy Juli Anto Ernitha Panjaitan Fauzi, Tengku M. Harianda Sembiring Helena Tatcher Pakpahan Hutapea, Kenal P. Jones Simatupang Laksono Trisnantoro Lamria Sidauruk Lince Romauli Panataria Lince Romauli Panataria Lubis, R. Maida Pardosi Maludin Panjaitan Manik, Arni Meilina Meylin Kristina Saragih Meylin Kristina Saragih Meylin Saragih Nababan, Manaor Bismar Posman Nobel Pakpahan, Helena Panataria, Lince R Panataria, Lince Romauli Pantas Simanjuntak Pantas Simanjutak R. Lubis Rina Doriana Pasaribu Rio Adesta Hutauruk Saragih, Meylin SARAGIH, MEYLIN KRISTINA Sembiring, Harianda Siahaan, Jekson Martiar Sianipar, Ebsan Sianturi, Martius Tandem Sianturi, Pahala LL Sihombing, Parsaoran Sihombing, Parsaoran Silalahi, Veraci Simanjuntak, Crystina Simanjuntak, Pantas Simatupang, Aditia Erick Cantona Sirait, Kilian Siti Normi, Siti Sitorus, Jose Sitorus, Ragnar Oktavianus Sri Pratiwi Aritonang Sri Pratywi