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Alex Rikki
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Journal of Agrotechnology and Sustainability
Published by Universitas Katolik Santo Thomas
ISSN : -     EISSN : 29861454     DOI : 10.54367
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal AGROSUSTAIN diterbitkan oleh Fakultas Pertanian Universitas Katolik Santo Thomas Medan bekerjasama dengan LPPM Universitas Katolik Santo Thomas. Jurnal ini mengakomodir artikel/karya ilmiah meliputi agronomi, ilmu tanah, hama dan penyakit, teknologi benih, pemuliaan tanaman, pascapanen, dan sosial ekonomi pertanian. Naskah yang dimuat dapat berupa hasil penelitian, telaah/tinjauan literatur, penelitian singkat (short communication) dan gagasan penting dalam bidang pertanian.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 5 Documents
 1 
Search results for , issue "Volume 2 Nomor 2 (2024)" : 5 Documents clear
Karakteristik Buah dan Biji Kakao (Theobroma Cacao L.) pada Berbagai Altitude di Dataran Tinggi Dairi Sitohang, Nurdin; Marbun, Arjun
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.v2i2.4618

Abstract

The cocoa productivity is currently quite low quantity (454 kg ha-1) and quality, one of it caused by planting location of various altitude especially the highlands. The focus of this research were characteristic of cocoa pod and beans on several altitudes in Dairi highland. The research method were survey as purposive sampling on four altitudes as 860, 940, 1040, and 1120 m from sea levels (asl). The observed parameters were pod size, pod diametre, pod volume, dry weight of pod, dry weight of kolven, dry weight of beans, bean count per pod, dry weight per bean, pods value, and bean yield at 4 different altitudes in Dairi highland (>800 m asl) with 10 pods (replications) at each altitudes. The results of research showed that the increasing of altitude caused the decresed of pod size, pod diametre, pod dry weight, dry weight of beans, bean count per pod, dry weight each bean, pod value, and bean yield. The best pods and beans were at altitude of 860 m asl, namely fruit length 18.3 cm, fruit dry weight 118.6 g, beans dry weight 48.3 g, number of beans per fruit 43.7 and average weight per bean 1.10 g. The physical characteristics of cocoa pods and beans are still in the normal category.
RESPON PERTUMBUHAN STEK BATANG BUAH NAGA (HYLOCEREUS COSTARICENSIS) TERHADAP LAMA PERENDAMAN DALAM AIR KELAPA DAN DOSIS ECOENZIM Panjaitan, Delima; Sinulingga, Edo Aprianta
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.v2i2.4669

Abstract

This research aims to see the response of dragon fruit stem cuttings to the length of soaking in coconut water and the dose of ecoenzymes and to determine the interaction between the two treatments. This research was conducted in Suka Makmur Village, Dusun II Suka Malem, Kutalimbaru District, Deli Serdang Regency, with an altitude of 125 meters above sea level and 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 length of soaking in coconut water (A) which consists of 4 treatment levels, namely Ao = 0 hours (no soaking), A1 = 4 hours soaking, A2 = 8 hours soaking, and A3 = 12 hours soaking., second factor namely the dose of ecoenzyme (E) which consists of 4 treatment steps, namely Eo = 0 ml (without ecoenzyme), E1 = 6 ml of ecoenzyme, E2 = 10 ml ecoenzyme, and E3 = 14 ml ecoenzyme. Data analysis uses variance. The parameters observed in this study consisted of shoot emergence time, number of shoots, shoot length, number of roots, root length, net wet weight of roots, net dry weight. The research results showed that the length of soaking in coconut water had a significant effect on shoot length after 8 hours of immersion at 4 WAP, but had no real effect on the time of shoot emergence, number of shoots, shoot length at 8 and 12 WAP, number of roots, root length, net root weight. , net dry weight of roots. The ecoenzyme dose had a significant effect on root length with a dose of 14 ml, whereas the net root weight and net dry weight of the roots had no significant effect on the control treatment.
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.
PENGARUH KONSENTRASI IAA TERHADAP PERTUMBUHAN STEK BATANG ANGGUR (Vitis vinifera) VARIETAS. JUPITER Matanari, Jawaller; Tarigan, Rio Stepanus; Harefa, Kurnia Selekta Etika
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.v2i2.4750

Abstract

This study aims to see the effect of IAA concentration and find the optimum IAA concentration on the growth of stem cuttings of Jupiter variety grapes. The parameters observed in the experiment include: Percentage of budding cuttings, Age of budding cuttings, Number of buds per cuttings 65 hst, Height or Length of shoots 65 hst, Number of leaves per cuttings 65 hst, and Number of live plants 90 hst. Based on the results of experimental data analysis and discussion, several conclusions can be drawn as follows: IAA concentration treatment has a significant effect on increasing the percentage of sprouted cuttings, shoot length 65 hst and number of live plants 90 hst, IAA-optimum concentration for the percentage of sprouted cuttings is 50 ppm IAA, 65 HST shoot length is 35 ppm IAA, and the number of live plants is 33.33 ppm IAA. Growth of grape stem cuttings was higher at concentration treatments lower than 100 ppm IAA concentrations. The effect of IAA concentration on the growth of grape stem cuttings effectively promotes growth lower than 100 ppm concentration, whereas treatment of higher concentrations markedly suppresses the growth of observed parameters. The optimum IAA concentration in more valid grape stem cuttings needs to be experimented with the effect of IAA concentrations below 100 ppm on the growth of Jupiter grape cuttings, because the regression equation obtained in this experiment is influenced by the level of treatment performed.
PENGARUH JARAK TANAM DALAM UPAYA MENEKAN PERTUMBUHAN GULMA PADA PERTANAMAN DAN PRODUKSI JAGUNG MANIS PADA VARIETAS EXSOTIC (Zea mays saccharate Sturt) Sitinjak, Lentina; Tarigan, Mulianta
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.v2i2.4751

Abstract

This research aims to determine the effect of planting distance on weed growth and production of Exsotic sweet corn (Zea mays saccharate Sturt) varieties. Weeds are one of the main inhibiting factors in the growth of sweet corn plants, which can have a negative impact on production if not controlled effectively. This research was carried out from May to July 2024 on Jalan Ngumban Surbakti Gang Sedap Malam no. This research method uses a non-factorial Randomized Block Design (RAK) which consists of 3 levels. The treatment factors are the first: J1 with a planting distance of 50 cm x 25 cm, J2 with a planting distance of 60 cm x 25 cm and J3 with a planting distance of 70 cm x 25 cm. The research data were analyzed using variance based on a linear model. Based on the research results, there is an influence of planting distance on the presence of weed vegetation in corn planting areas. The most types of weeds are found at planting distance J3 (70 x 25 cm) with 6 types of weeds with a Summed Dominance Ratio (SDR) of 1.14%, while the type of weed with the lowest SDR is found at planting distance J2 (60 x 25 cm) amounting to 0.83%. And planting distance has a significant effect on plant height at 2 and 8 WAP, stem diameter at 2 WAP, number of leaves at 2 WAP, production per sample, weight per plot and safe weight. Plants had the best growth at a planting distance of J3 (70 cm x 25 cm), while the highest production was at a planting distance of J1 (50 cm x 25 cm).

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