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All Journal MEDIA UNIKA - Majalah Ilmiah Caraka Tani: Journal of Sustainable Agriculture Agroprimatech Agro Bali: Agricultural Journal Agrica Ekstensia Fruitset Sains : Jurnal Pertanian Agroteknologi PERTANIAN TROPIK Tabela Jurnal Pertanian Berkelanjutan Journal of Agrotechnology and Sustainability
Yustina Sri Sulastri
Universitas Katolik Santo Thomas, Indonesia
Agriculture, Biological Sciences & Forestry Education Environmental Science

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Analysis Of Biomass Of Mucuna Bracteata DC Due To The Provision Of Coffee Skin Waste As An Alternative Fertilizer Tarigan, Andry Admaja; Perangin-angin, Hagai Jorenta; Afrianti, Suratni; Sulastri, Yustina Sri; Sihaloho, Martha Adiwaty; Pratomo, Bayu
Agroprimatech Vol. 9 No. 1 (2025): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v9i1.6504

Abstract

Biomass Analysis of Mucuna bracteata DC Due to the Application of Coffee Husk Waste as an Organic Nutrient Source. Mucuna bracteata DC is a cover crop that plays a crucial role in soil conservation and soil fertility improvement. This study aims to analyze the effect of liquid organic fertilizer (LOF) derived from coffee husk waste on the biomass growth of Mucuna bracteata DC, particularly in terms of fresh shoot weight, fresh root weight, dry shoot weight, and dry root weight. The research was conducted at Jalan Kuali No. 50, Medan Petisah District. The experiment was designed using a Completely Randomized Block Design (CRBD) with a single-factor treatment consisting of seven LOF dosage levels: K0 (no treatment), K1 (5 mL/polybag), K2 (10 mL/polybag), K3 (15 mL/polybag), K4 (20 mL/polybag), K5 (25 mL/polybag), and K6 (30 mL/polybag), with four replications, totaling 28 experimental plots. The results showed that the application of coffee husk LOF significantly affected the biomass growth of Mucuna bracteata DC. The highest fresh shoot weight (9.51 g) and dry shoot weight (2.14 g) were recorded in treatment K6 (30 mL/polybag), whereas the highest fresh root weight (2.29 g) and dry root weight (0.32 g) were observed in treatment K5 (25 mL/polybag). Higher LOF doses generally increase plant biomass up to an optimal threshold, beyond which nutrient absorption efficiency by roots declines. Overall, the optimal LOF dosage for maximizing biomass growth in Mucuna bracteata DC ranges between 25–30 mL/polybag. The use of coffee husk waste as an organic nutrient source presents a sustainable alternative for improving plant productivity while reducing dependency on synthetic fertilizers.
PEMANFAATAN LIMBAH BUAH-BUAHAN SEBAGAI EKOENZYME DAN PUPUK KANDANG SAPI UNTUK PERTUMBUHAN TANAMAN SELADA HIJAU (LACTUCA SATIVA L.) Panjaitan, Delima; sulastri, yustina sri
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v2i1.3577

Abstract

This research aims to determine the effect of providing eco-enzymes and cow manure on the growth of lettuce plants. This research was carried out in Bandar Baru Village, Sibolangit District, Deli Serdang Regency and was carried out from July to September 2023. This research used a factorial Randomized Group Design (RAK) consisting of 2 factors. The first factor in giving cow manure (P) consists of 4 levels, namely P0: 0 tons/ha (0 g/bed), P1: 10 tons/ha (126 g/bed), P2: 20 tons/ha (251 g/bed). bed), P3: 30 tons/ha (377 g/bed) and the second factor of ecoenzyme (K) consists of 3 levels, namely K0: 0 ml/plant, K1: 6 ml/plant, K2: 8 ml/plant , and K3: 10 ml/plant. Data analysis uses analysis of variance. The research results showed that cow manure had a real influence on plant height, number of leaves, net root weight, plot wet weight and plot dry weight. The highest plants were obtained at a dose of 251 gr. Ecoenzyme had a significant effect on net root weight, plot wet weight, and plot dry weight. The interaction between giving cow manure and giving eco-enzymes had no effect on the parameters of plant height, number of leaves, net root weight, plot wet weight, plot dry weight.
RESPON PERTUMBUHAN TANAMAN CABAI RAWIT (Capsicum frutescens L.) TERHADAP KONSENTRASI DAN FREKUENSI EKOENZIM Sulastri, Yustina Sri
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v2i1.3709

Abstract

Chili, which is one of the seven national strategic commodities, shows fluctuating export figures and import figures that tend to increase. It is necessary to implement a cultivationtechnology to increase the growth of chili plants. One technique for cultivating chilies usesecoenzymes. Research to see the effect of ecoenzymes on the growth of cayenne pepper plants hasbeen carried out. This research used a factorial Randomized Block Design (RBD), namelythe first factor was the ecoenzyme concentration consisting of 4 treatment levels, namely: K0 : 0ml/500 ml water, K1 : 15 ml/500 ml water, K2 : 30 ml/500 ml water, K3: 45 ml/500 ml water. The second factor is the frequency of ecoenzymes consisting of 3 treatment levels, namely: F1: 1time a week, F2: 2 times a week, F3: 3 times a week. Statistical testing was carried out by compiling a list from analysis of variance. For treatments that had a significant effect, a mean difference test was carried out with an honest significant difference test at the 5% level and continued with regression analysis. The parameters observed were plant height (cm), number of leaves (strands),stem diameter (cm). The results showed that both concentration and frequency factors did not have a significant influence on all parameters except the number of leaves parameter. The increasing ecoenzyme concentration to 45 ml/500 ml of water increased the number of leaves by 49.59 pieces.
Respon Pertumbuhan dan Hasil Tanaman Bawang Prei (Allium Fistolusum L.) dengan Dosis Kascing yang Berbeda Sulastri, Yustina Sri; Kusbiantoro, Dedi; Siagian, Welda
AGROSUSTAIN Volume 3 Nomor 1 (2025)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v3i1.4625

Abstract

Pemanfaatan Tanah TPA Terjun terhadap Pertumbuhan Tanaman Lavender (Lavandula Angustifolia) Panjaitan, Delima; Sulastri, Yustina Sri; Saitararak, Oktaria
AGROSUSTAIN Volume 3 Nomor 1 (2025)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v3i1.4630

Abstract

This research aims to determine the effect of the quantity and distance of land collection from the Terjun Landfill and the effect of the interaction of these two treatments on the growth of lavender plants (Lavandula angustifolia). Landfill soil is land in a final disposal site where, in this soil the organic nutrient content is quite high, but you need to know that apart from organic waste in landfill land there is also electronic waste, resulting in metal elements contained in landfill soil being also quite high. This research was carried out in screen house, Faculty of Agriculture, Santo Thomas Catholic University, Medan, with an altitude of 32 meters above sea level starting from February to April 2024. This research used a randomized block design (RAK) with 2 factors. The first factor is the distance to take landfill land (J) which consists of 3 levels, namely: J1= 0 m, J2= 52 m, J3= 104 m. The second factor is the quantity of landfill soil (M) consists of four levels, namely M1 = without landfill soil (Control), M2 = 3 kg, M3 = 4 kg, M4 = 5 kg. Data analysis uses analysis of variance. The parameters observed were plant height, number of shoots, root wet weight, root dry weight, root volume, shoot wet weight and soil pH. Based on the research results, it can be stated that the distance factor for taking soil has a very significant influence on plant height, number of shoots, root volume and wet weight of lavender plant crowns. The quantity of soil has a significant effect on plant height and the interaction between the distance from the landfill and the quantity of landfill soil has a significant effect on the wet weight of the canopy.
PENGARUH JARAK TANAM DAN DOSIS PUPUK NPK TERHADAP PERTUMBUHAN DAN PRODUKSI AKAR WANGI (Vetiveria zizaniodes) PADA SISTEM BUDIDAYA POLIKULTUR DI BAWAH TEGAKAN TANAMAN KARET (Havea brasiliensis) Sulastri, Yustina Sri; Junaidi, Junaidi; Sinaga, Nurvita
AGROSUSTAIN Volume 2 Nomor 2 (2024)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v2i2.4670

Abstract

Get the best combination of plant spacing and fertilizer dosage for vetiver growth under rubber tree stands. This research was carried out at the Sungei Putih Research Unit, Rubber Research Center located in Galang District, Deli Serdang Regency, North Sumatra. This research used a factorial Randomized Block Design (RAK), which consisted of two factors, namely fertilizer dose and planting distance. The first factor given is the effect of fertilizer dose symbolized "U" which consists of four levels, namely: U0 = without NPK fertilizer (Control), U1 = 10 gr/plant, U2 = 20 gr/plant, U3 = 40 gr/plant . The second factor used is planting distance (J) which consists of three levels, namely: J1 = 20 cm x 40 cm, J2 = 20 cm x 60 cm, J3 = 20 cm x 80 cm. Each treatment level was repeated 3 times, so that there were 36 plots/experimental units and the total sample of plots was 12, the placement of each sample was carried out randomly. Planting distance 20 x 40 cm = 16 x 12 plots = 192 plants. Planting distance 20 x 60 cm = 16 x 12 plots = 192 plants. Planting distance 20 x 80 cm = 16 x 12 plots = 192 plants. So the total number of plants is 576 plants. The results of this research are that planting distance has a real influence on root wet weight and root dry weight, where a planting distance of 20x60 cm gives the best results. NPK fertilizer does not have an effect on all parameters.
RESPON PERTUMBUHAN BIBIT TANAMAN KAKAO (Theobroma cacao L.) TERHADAP DOSIS MIKORIZA DAN FREKWENSI PENYIRAMAN Sulastri, Yustina Sri; Gusriani, Yunda; Sinaga, Ricci
AGROSUSTAIN Volume 1 Nomor 2 (2023)
Publisher : LPPM Universitas Katolik Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/agrosustain.v1i2.2916

Abstract

This study entitled Effect of Mycorrhizal Dosage and Watering Frequency on the Growth of Cocoa (Theobroma cacao L.) Seeds. The purpose of this study was to determine the frequency of watering and the right dose of mycorrhizal fungi in cocoa (Theobroma cacao L.) nursery techniques. In this study using a randomized block design (RBD) consisting of two factors. The first factor is the frequency of watering (P) which consists of 4 levels: P1 = watering once a day, P2 = watering every 3 days, P3 = watering every 5 days and P4 = watering once every 7 days. The second factor was the mycorrhizal dose (M) which consisted of 4 factors: M0 = without mycorrhizal administration, M1 = 25 g mycorrhizal, M2 = 50 g mycorrhizal and M3 = 75 g mycorrhizal. Parameters observed consisted of plant height, stem diameter, number of leaves, leaf area, fresh weight of roots, dry weight of roots, fresh weight of plants and dry weight of plants. The results showed that the treatment of watering frequency significantly increased root wet weight and plant wet weight, but had no significant effect on plant height, stem diameter, number of leaves, leaf area, root dry weight and plant dry weight. Mycorrhizal dose treatment had no significant effect on plant height, stem diameter, number of leaves, leaf area, root wet weight, root dry weight, plant wet weight and plant dry weight. The interaction of watering frequency and mycorrhizal doses had no significant effect on plant height, stem diameter, number of leaves, leaf area, root wet weight, root dry weight, plant wet weight and plant dry weight.
Growth Response of Aromatic Grasses to Soil Salinity Stress Sulastri, Yustina Sri; Tampubolon, Sanggam Dera Rosa; Manungkalit, Fernando
Agro Bali : Agricultural Journal Vol 8, No 1 (2025)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v8i1.2139

Abstract

This research aims to determine the growth response of vetiver, lemongrass and citronella plants in terms most resistant to soil salinity stress levels. The study was carried out at the screen house of the Faculty of Agriculture, Santo Thomas Catholic University, Medan, which is 32 meters above sea level. This research was carried out in January to March 2024. The study used a factorial, Completely Randomized Design, which consisted of two factors. The first factor is the influence of several aromatic grasses (R), which consist of 3 types: lemongrass, citronella, and vetiver. The second factor is the salinity soil stress (S) level, which consists of five levels: without saline, 25% saline soil, 50% saline soil, 75% saline soil saline, and 100% saline soil. Based on these treatment combinations, there were 15 combinations, and each treatment was repeated 3 times so that 45 plants/pots measured 5L. Parameter observations were carried out during harvesting; the parameters observed were shoot fresh weight, shoot dry weight, root fresh weight, root volume, and root cross-section anatomy. The results of the study can be stated that the factor of several aromatic grasses has a significant effect on shoot fresh weight, shoot dry weight, roots fresh weight, and roots volume, where the best aromatic grasses is vetiver even though it was not significantly different from citronella which is resistant to growth at salinity stress levels of 50% to 100%. The salinity level also has a significant effect where salinity starting from 25% causes a decrease in the fresh weight and dry weight of the shoot of the three aromatic grasses. 
PENGARUH EKSTRAK KULIT BAWANG MERAH DALAM MENGENDALIKAN HAMA ULAT GRAYAK (Spodoptera litura F.) SECARA IN VITRO Gusriani, Yunda; BENAULI, ARKHIADI; SULASTRI, YUSTINA SRI
Agroprimatech Vol. 7 No. 2 (2023): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v7i1.4232

Abstract

This research was conducted to determine the dose of shallot skin extract that is effective for controlling Spodoptera litura F. This research was carried out for 2 months at the Biology Laboratory, Faculty of Agriculture, Santo Thomas Catholic University, Medan. The research design used was a Non-Factoral Completely Randomized Design (CRD) consisting of five treatments and each treatment was repeated four times to form 20 experimental units of Red Onion Skin Soaking (K), namely: K0 = 0% (Control), K1 = 20 gr/liter of water, K2 = 40 gr/liter of water, K3 = 60 gr/liter of water, and K4 = 80 gr/liter of water. The parameters observed were pest mortality, 50% death time and larval behavior after application. From the research results, it can be seen that administering shallot skin extract at the highest dose, namely 80 g/L, can be quadratically used as a botanical insecticide to control S. litura pests with a death time of 27 hours
KAJIAN KONSENTRASI EKSTRAK BAWANG MERAH DAN LAMA PERENDAMAN TERHADAP PERTUMBUHAN STEK LADA (Piper nigrum L.) Sulastri, Yustina Sri; Gusriani, Yunda; Barasa, Jojong Sah Kian; Rajagukguk, Fransisco
Agroprimatech Vol. 7 No. 2 (2023): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v7i1.4233

Abstract

This research aims to determine the effect of shallot extract concentration and soaking time on the growth of pepper plant stems. This research was carried out at the Unika Santo Thomas Medan agricultural experimental field Jl. Setia Budi no. 479, Tanjung Sari, Medan. With a height of around 32 meters above sea level (meters above sea level). This research was conducted from March to May 2023. This research used a factorial Randomized Block Design (RAK) consisting of 2 factors. The first factor is the concentration of shallot extract (K) and the second factor is the soaking time (P). The first factor is the concentration of shallot extract (K) consisting of 4 treatment levels, namely: K0: 0% (control), K1: 30% (30 mL of shallot extract + 70 mL of distilled water), K2: 60% (60 mL of shallot extract + 40 mL distilled water), K3: 90% (90 mL shallot extract + 10 mL distilled water). The second factor is the length of soaking of pepper plant cuttings (P) consisting of 3 treatment levels, namely: P1: 3 hours, P2: 6 hours, P3: 9 hours. Based on the research results, it can be seen that the concentration of onion extract has no effect on the percentage of live cuttings of pepper plant cuttings, but it has a real influence on the length of the shoots with the highest shoots obtained at a concentration of 93.33% at a concentration of 83.77% for the number of leaves. the most. Regarding the number of roots, a concentration of 78.66% produced the highest number of roots.
Co-Authors afrianti, Suratni Arung Luoma Harefa Barasa, Jojong Sah Kian Benauli, Arkhiadi Dedi Kusbiantoro Delima Panjaitan Depari, Ari Angga Pratama Edison Purba Elseria Siburian Fransisca Natalia Sihombing Ginting, Billi Sanjaya Ginting, Chelvin Van Roy Gusriani, Yunda Jojong Sah Kian Barasa Junaidi Junaidi Koko Tampubolon Koko Tampubolon Kurnia Selekta Etika Harefa Kusbiantoro, Dedi Manungkalit, Fernando Mendrofa, Daniel Muhammad Arif Nasution Munte, Marta Yulina Nazara, Sofinta Patricia Oktavianus, Angga Perangin-angin, Hagai Jorenta Pinem, Laura Juita Pratomo, Bayu Rajagukguk, Fransisco Rama Riana Sitinjak Saitararak, Oktaria Sanggam Dera Rosa Tampubolon Sembiring, lidia Siagian, Welda Sihaloho, Martha Adiwaty Sinaga, Nurvita Sinaga, Ricci Sony Tri Septian Samosir Syahibal Karim Tanjung, Agung Rafiul Naldi Tarigan, Andry Admaja Tarigan, Andry Atmaja Yunda Gusriani Zavandri Purba