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Journal : Jurnal Agroplasma

Respon Pemberian Pupuk Kompos dan NPK Terhadap Produksi Tanaman Kangkung Darat Daniel, MHD Yandri; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 11, No 2 (2024): JURNAL AGROPLASMA VOLUME 11 NO 2 TAHUN 2024
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v11i2.6266

Abstract

This research aims to determine the effect of fertilizer dosage on the growth of land kale (Ipomoea reptansPoir). The research was carried out using a completely randomized experimental design (DEC) involving several fertilizer dose treatments, namely 0 kg/ha, 50 kg/ha, 100 kg/ha, and 150 kg/ha. Each treatment was repeated three times to ensure the accuracy of the results. The parameters observed included plant height, number of leaves, and land kale plant biomass. The results showed that fertilizer dosage had a significant effect on plant growth. A fertilizer dose of 100 kg/ha gave the best results on all growth parameters, followed by a dose of 50 kg/ha and 150 kg/ha. A fertilizer dose of 0 kg/ha shows the lowest growth. These findings indicate that optimal fertilization is very important to increase the growth yield of land kale. This research provides recommendations for efficient fertilizer doses to support maximum growth of land kale plants. Keywords: fertilizer, land kale, fertilizer doses
Pengaruh Pupuk Kandang Ayam dan Pupuk Urea Terhadap Pertumbuhan dan Hasil Tanaman Sawi Pakcoy (Brassica annum L.) Hulu, Yusnita Dewi; Zulfida, Ida; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 11, No 2 (2024): JURNAL AGROPLASMA VOLUME 11 NO 2 TAHUN 2024
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v11i2.6252

Abstract

This study aims to analyze the effect of using chicken manure and urea fertilizer on the growth and production of pakcoy (Brassica rapa L.). This study used an experimental method with a randomized complete block design (RCBD) consisting of two main factors, namely the dose of chicken manure and urea fertilizer. The doses of chicken manure used were 2 kg/plot and 4 kg/plot, while the doses of urea fertilizer used were 15 g/plot and 20 g/plot. The parameters observed included plant height, number of leaves, leaf area, fresh weight per plant, and fresh weight per plot. The results showed that the combined use of chicken manure and urea fertilizer had a significant effect on pakcoy growth parameters, especially plant height, number of leaves, leaf area, and fresh weight per plant. Keywords: chicken manure, urea fertilizer, pakcoy
Pengaruh Aplikasi Pupuk NPK Terhadap Pertumbuhan dan Produksi Tanaman Wortel (Daucus carota L.) Giawa, Yunus Yaaro; Zulfida, Ida; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 11, No 2 (2024): JURNAL AGROPLASMA VOLUME 11 NO 2 TAHUN 2024
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v11i2.6314

Abstract

Indonesia is one of the tropical countries that has a variety of plants including vegetables and fruits. One that has the largest production is carrots (Daucus carota L.). Carrots are a type of shrub-shaped vegetable plant, which grows upright with a height of 30-100 cm or more. Carrots (Daucus carota L.) are a tuberous vegetable type plant that is usually reddish yellow or yellowish orange with a wood-like texture. The edible part of a carrot is the bulb or root. The plant stores food reserves in the bulb. The stem is short, has a taproot that changes its shape and function into a round and elongated tuber. The skin of carrot bulbs is thin and if eaten raw, it feels crunchy and slightly sweet. Here's a picture of a carrot plant. One way to increase the yield of carrot plants is by increasing soil productivity, using the addition of NPK fertilizer. This study used a factorial randomized group design (RAK). For accuracy in this study, it was repeated 3 times. namely: NPK fertilizer (N) with 3 levels, namely: N0 = Control, N1 = 15 g/plot, and N2 = 25 g/plot. From the ANOVA test results, the variance of treatments that have a significant effect is continued with the Duncan DMRT test at the 5% level. The results of the ANOVA test showed that the effect of NPK fertilizer treatment on plant height 21 hst and 28 hst, the number of leaves had no significant effect, but the observation of the diameter of the base of the tuber, the fresh weight of the plant per sample and the fresh weight of the plant per plot had a significant effect.  Keywords: NPK fertilizer, NPK dosage, and carrot plants
Pengaruh Jarak Tanam dan Aplikasi Dosis Pupuk NPK Terhadap Hasil Tanaman Kacang Panjang (Vigna sinensis L.) Giawa, Suci Citrawani; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 11, No 2 (2024): JURNAL AGROPLASMA VOLUME 11 NO 2 TAHUN 2024
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v11i2.6306

Abstract

This study aimed to analyze the interaction between planting distance and NPK fertilizer dose onthe growth and yield of long bean plants. The experimental design used a factorial RandomizedComplete Block Design (RCBD) with two factors, namely planting distance (30 cm x 20 cm, 30cm x 30 cm, and 30 cm x 40 cm) and NPK fertilizer dose (0 gr/polybag, 40 gr/polybag, and 60gr/polybag).Theobservedvariablesincludedplantheight,stemdiameter,podlength,podweight, and number of pods. The data were analyzed using ANOVA and Duncan's MultipleRange Test at the 5% level. The results showed that there was a significant interaction betweenplantingdistanceandNPKfertilizerdoseontheyieldoflongbeanplants.Thecombinationof30 cm x 30 cm planting distance and 60 gr/polybag NPK dose (P2J2) produced the best results,especiallyintermsofpod weight andnumberofpods perplant. Keywords:longbean,plantingdistance,NPKfertilizer
Efektivitas Ekstrak Kunyit (Curcuma longa L.) dan Pupuk NPK Terhadap Insidensi Penyakit Virus Keriting Kuning Pada Cabai Rawit (Capsicum frutescens L.) Baene, Anusafati; Harahap, Rahmaniah; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.7812

Abstract

Yellow leaf curl virus infection in chili pepper (Capsicum frutescens L.) can significantly reduce crop yield. This study aimed to evaluate the effect of turmeric extract and NPK fertilizer doses on the incidence of yellow leaf curl virus in chili pepper plants. The research was conducted at the experimental field of Universitas Pembinaan Masyarakat Indonesia from June to August 2025 using a factorial Randomized Complete Block Design (RCBD) with two factors: turmeric extract (0%, 10%, 15%, 20%) and NPK dosage (0, 3.3 g, 5 g, 6.6 g per plant), resulting in 16 treatment combinations. Disease incidence was observed from 2 to 9 weeks after transplanting. The results showed that the highest incidence occurred at weeks 3 and 8. The K3P0 treatment (high-dose turmeric without NPK) resulted in the lowest incidence rate at 11.2%, while K1P3 (low-dose turmeric + high NPK) showed the highest at 137.5%. Although ANOVA results revealed no statistically significant differences (p>0.05), descriptively, high-dose turmeric treatments reduced symptoms and spread of disease. These findings highlight turmeric's potential as an eco-friendly botanical agent for managing viral diseases in chili cultivation. Keywords: chili pepper, disease incidence, NPK, turmeric, yellow leaf curl virus 
Pengaruh ZPT Auksin dan POC Photosynthetic Bacteria (PSB) Terhadap Hasil Produksi Tanaman Kangkung Darat (Ipomoea reptans P.) Lawolo, Andi Gusman Sarta; Zulfida, Ida; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.7931

Abstract

Ipomoea reptans P. commonly known as water spinach, is a leafy vegetable with high economic value and is widely consumed by the Indonesian population. This plant is extensively cultivated due to its short harvest cycle of approximately 25–30 days after planting, which provides farmers with the opportunity to increase land productivity. This study was conducted on agricultural land at the Universitas Pembinaan Masyarakat Indonesia (UPMI), Medan, from June to August 2025. A factorial Randomized Block Design (RBD) 4×4 with three replications was employed. The first factor was the Auxin Plant Growth Regulator (PGR) with four levels: Z0 = control, Z1 = 50 ml/L, Z2 = 100 ml/L, and Z3 = 150 ml/L. The second factor was POC PSB with four levels: P0 = control, P1 = 50 ml/L, P2 = 100 ml/L, and P3 = 150 ml/L. The results indicated that the application of Auxin PGR significantly affected the production parameters, with treatment P2 (100 ml/L) yielding a fresh weight of 58.1 grams. Furthermore, the interaction between Auxin PGR and POC PSB had a highly significant effect on the fresh weight of plants. The optimal combination was found in treatment Z3P2 (150 ml/L Auxin + 100 ml/L POC PSB), resulting in a fresh weight of 65.7 grams. In conclusion, the combined application of 150 ml/L Auxin PGR and 100 ml/L POC PSB significantly enhances the growth and yield of Ipomoea reptans and represents an environmentally friendly alternative technology to improve horticultural productivity. Keywords: ipomoea reptans, auxin plant growth regulator, POC PSB, growth, yield
Pengaruh Lama Perendaman Air Kelapa dan Aplikasi Pupuk Kilat terhadap Pertumbuhan dan Hasil Panen Kacang Hijau (Vigna radiata L.) Halawa, Juliman; Zulfida, Ida; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.7962

Abstract

This study aimed to evaluate the effect of coconut water seed soaking duration and flash fertilizer application on the growth and yield of mung bean (Vigna radiata L.). The experiment was conducted at the experimental field of the Faculty of Agriculture, Indonesian Community Development University, Medan, from May to August 2024. A Randomized Block Design (RBD) with two factors and three replications was employed. The first factor was coconut water soaking duration (0, 2, 4, and 6 hours), while the second factor was flash fertilizer application (0, 0.25, 0.5, and 1 cc/L). Observed parameters included plant height, number of leaves, flowering age, pod weight per plant, and pod weight per plot. Results indicated that a soaking duration of 6 hours (P3) had a highly significant effect on all observed parameters, producing the highest plant height, leaf number, and pod weight. Similarly, flash fertilizer at 1 cc/L (K3) promoted better vegetative and reproductive growth compared to other treatments. The interaction of P3K3 produced the best performance across growth and yield traits. These findings suggest that combining coconut water seed soaking for 6 hours with flash fertilizer application at 1 cc/L is an effective strategy to enhance mung bean productivity. Keywords: mung bean, coconut water, flash fertilizer, growth, yield
Respon Pertumbuhan Sawi Hijau (Brassica juncea L.) Terhadap Pemberian Pupuk Jadam Microbial Solution (JMS) dan NPK Cair Zai, Seiman Jaya; Samah, Eri; Harahap, Lutfi Henderlan
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.7980

Abstract

This study aimed to determine the effect of applying Jadam Microbial Solution (JMS) and liquid NPK fertilizer, both factorially and in combination, on the growth of mustard greens (Brassica juncea L.). The experiment was carried out using a factorial Randomized Block Design (RBD) consisting of two factors. The first factor was JMS application with four levels (J0 = 0 ml/l water, J1 = 100 ml/l water, J2 = 200 ml/l water, J3 = 300 ml/l water), and the second factor was liquid NPK fertilizer with four levels (N0 = 0 ml/l water, N1 = 10 ml/l water, N2 = 15 ml/l water, N3 = 20 ml/l water). Each treatment combination was repeated three times, resulting in 16 treatment combinations. The results showed that JMS application had a significant effect on plant height and number of leaves at all observation times (7, 14, and 21 days after planting/DAP), indicating improved vegetative growth and yield. Liquid NPK fertilizer application also significantly affected plant height and number of leaves at all observation times. The combination of JMS and liquid NPK fertilizer had no significant effect during the early growth stage (7 DAP), but showed significant effects on plant height and number of leaves at 14 and 21 DAP. These findings indicate that factorial application of JMS and liquid NPK fertilizer can enhance the growth of mustard greens, while their combination is effective at certain vegetative growth stages. Keywords: Brassica juncea L., jadam microbial solution, liquid NPK