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Yonny Koentjoro
Universitas Pembangunan Nasional “Veteran” Jawa Timur
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Modulation of Biomass Accumulation and Yield Traits in Vigna sinensis L. Under Paclobutrazol and NPK Phonska Plus (15:15:15) Treatments Marvin Julius Siagian; Yonny Koentjoro; Puji Lestari Tarigan
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 4: Jurnal Pembelajaran Dan Biologi Nukleus December 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i4.8370

Abstract

The productivity of long beans (Vigna sinensis L.) in Indonesia remains low due to an imbalance between vegetative and generative growth, with long bean production experiencing significant fluctuations between 2017 and 2022, dropping to 352,700 tons in 2019 and rising again to 360,674 tons in 2022. Research on the use of paclobutrazol and NPK fertilizer on long beans is generally conducted separately, so information regarding their interaction on fruit set and productivity remains limited. Therefore, this study aims to evaluate the interaction between paclobutrazol concentration and Phonska Plus NPK fertilizer dose on the growth and yield of long beans (Vigna sinensis L.), as well as to determine the most effective treatment combination for improving the plants' generative performance. The study employed a two-factor randomized block design (RBD) with four levels of paclobutrazol (0, 100, 150, 200 ppm) and four levels of Phonska Plus NPK fertilizer (250, 300, 350, 400 kg/ha), each replicated three times. Data were analyzed using analysis of variance (ANOVA) and followed by a BNJ test at the 5% level if significant effects were found. The results showed significant interactions for plant height at 14 and 56 days after sowing (DAS), pod number in the 2nd and 3rd weeks of harvest, pod weight per plot, and fruit set. The combination of 150 ppm paclobutrazol and 400 kg/ha NPK Phonska Plus yielded the highest fruit set at 86.92% and high pod weight. Physiologically, a moderate dose of paclobutrazol effectively suppressed vegetative growth in a controlled manner, allowing for more efficient distribution of photosynthates to the generative organs, while sufficient levels of N, P, and K enhanced photosynthetic activity and the pod-filling process. This study demonstrates the synergy between hormonal regulation and balanced fertilization in enhancing the generative performance of long beans, and provides recommendations for effective dose combinations to support more efficient and targeted productivity improvements
INDUKSI RADIASI SINAR GAMMA 60CO DOSIS 3 GY TERHADAP KERAGAMAN GENETIK POPULASI MUTAN (M4) TANAMAN BAWANG MERAH VARIETAS BAUJI Adam Ankeda Asza; Ida Retno Moeljani; Yonny Koentjoro
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 7, No 2 (2022): JURNAL AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v7i2.6108

Abstract

Bawang Merah (Allium ascalonicum L.) sebagai tanaman sayuran yang mempunyai nilai ekonomi penting bagi Indonesia. Produksi bawang merah di Indonesia tergolong rendah dan terus mengalami penurunan jumlah produksi, hal ini disebabkan karena petani yang kurang dapat memilih kultivar lokal dan varietas unggul yang dapat dibudidayakan. Mutasi merupakan teknik yang tepat untuk merakit dan mendapatkan keragaman yang lebih luas pada tanaman. Penelitian ini bertujuan untuk mengetahui apakah mutan generasi ke-4 (M4) berpengaruh terhadap tingkat keragaman genetik bawang merah varietas bauji. Penelitian ini akan dilakukan di Kebun Petani Desa Ketindan, Kecamatan Lawang, Kabupaten Malang, Jawa Timur pada bulan Juni sampai dengan Agustus 2021. Penelitian ini disusun berdasarkan Rancangan Acak Kelompok (RAK) dengan 1 faktor perlakuan yaitu galur mutan M3 bawang merah varietas bauji dosis 3 gray yang terdiri dari 10 galur mutan M3. Hasil penelitian menunjukkan bahwa tingkat keragaman genetik mutan (M4) tanaman bawang merah (Allium ascalonicum L.) pada mutan BM1 dosis 3 gray sinar gamma 60Co memiliki nilai heritabilitas tertinggi pada parameter berat brangkasan basah dan berat kering udara dan BM3 dosis 3 gray sinar gamma 60Co memiliki nilai heritabilitas tertinggi pada parameter tinggi tanaman.
Growth and Yield Response of Sangga Sembalun Garlic to Photoperiod and Planting Media Composition in the Lowlands: Growth and Yield Response of Sangga Sembalun Garlic to Photoperiod and Planting Media Composition in the Lowlands Oktaviana, Oktaviana; Makhziah, Makhziah; Koentjoro, Yonny
BIOEDUSCIENCE Vol 10 No 1 (2026): BIOEDUSCIENCE
Publisher : Universitas Muhammadiyah Prof. Dr. Hamka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/jbes/22758

Abstract

Background: Garlic (Allium sativum L.) is a common horticultural commodity used as a spice and traditional medicine. A challenge in garlic cultivation was meeting the increasing market demand, while production in Indonesia had declined, necessitating large-scale imports. One of the problems in garlic cultivation was the mismatch of agroclimatic conditions, such as photoperiod, which resulted in suboptimal growth. This study aimed to investigate the effects of photoperiod and planting media composition on the growth and yield of Sangga Sembalun garlic. Method: The planting site was located at the agroclimate station of the Faculty of Agriculture, Universitas Pembangunan Nasional “Veteran” Jawa Timur, at an altitude of 5 meters above sea level. A split-plot design was applied, with photoperiod as the main plot and planting media composition as the subplot. The photoperiod treatments consisted of three levels: 12 hours (F1), 14 hours (F2), and 16 hours (F3), while the planting media treatments also had three levels: soil (K0), 1:1:1 soil: goat manure: rice husk charcoal (K1), and 2:1:1 soil: goat manure: rice husk charcoal (K2). Result: Photoperiod and growing medium composition influenced initial garlic growth but had no significant effect on subsequent growth. A porous medium with high organic matter promoted increased clove diameter and weight, while photoperiod tended to increase bulb production. However, in this study, neither treatment had any effect because garlic showed poor adaptation to lowland conditions. Conclusion: The interaction between a 12-hour photoperiod and growing medium composition (1:1:1 soil, rice husk charcoal, and manure) had a significant effect on garlic plant height at 14 and 21 days after planting. However, at later growth stages, the effects of photoperiod and growing medium composition were not significant for the observed parameters. Overall, garlic growth and yield in this study were relatively low, indicating that the tested variety was not well adapted to lowland conditions.
Response to Growth and Yield of Chili (Capsicum annuum L.) to the application of biological fertilizers and Biochar Nabilah Rizqiyah Rahma Dani; Yonny Koentjoro; Nova Triani
Mediagro: Jurnal Ilmu-ilmu Pertanian Vol 21 No 1 (2025): Mediagro
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/mediagro.v21i1.12469

Abstract

Chili is one of the vegetable commodities that is often consumed by people in Indonesia. The demands of chili will increase along with population and industrial development in Indonesia. The rising demand for chili will increase the use of chemical fertilizers, especially Urea and NPK. Efforts to reduce the use of excess chemical fertilizers are to use biofertilizers and biochar. Biofertilizers function to provide nutrients to replace chemical fertilizers while biochar is a soil ameliorant material that can bind nutrients and water in the soil. The application of biological fertilizers and biochar is expected to improve the chemical, biological and physical properties of the soil so as to provide media and nutrients for plant growth. In addition, the purpose of this study was to obtain the best combination dose of biochar and biofertilizer on the growth and yield of red chili. This study used a factorial randomized group design (RAK). The first factor is the dose of biofertilizer (Y) consisting of 3 levels, namely 6 l/ha, 8 l/ha and 10 l/ha. The second factor is the dose of biochar (B) consisting of 4 levels, namely 6 tons/ha, 8 tons/ha, 10 tons/ha and 12 tons/ha. The results showed that the combination of biofertilizer doses and biochar treatments interacted with plant height at 28 and 35 HST (Days After Planting), number of leaves at 35 HST and fruit weight throughout the harvest period. The best combination was found at a dose of 6 l/ha biofertilizer and a dose of 8 tons/ha biochar. Keywords: growth and yields, chili, biochar, biofertilizers
THE THE EFFECT OF GIVING RICE HUSK CHARCOAL AND GANDASIL B FERTILIZER CONCENTRATION ON THE GROWTH AND YIELD OF PURPLE EGGPLANT (Solanum melongena L.): PENGARUH PEMBERIAN ARANG SEKAM DAN KONSENTRASI PUPUK GANDASIL B TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TERUNG UNGU (Solanum melongena L.) Rohmad Indrajaya; Yonny Koentjoro; Felicitas Deru Dewanti
Mediagro: Jurnal Ilmu-ilmu Pertanian Vol 21 No 2 (2025): MEDIAGRO
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/mediagro.v21i2.13052

Abstract

Purple eggplant (Solanum melongena L.) is one of the horticultural commodities that is quite much in demand by the people of Indonesia. The need and demand for purple eggplant every year continues to increase along with the increase in population, but purple eggplant production in some areas is still quite low due to one of them is limited land due to land conversion and less fertile land. This research was conducted from December 2024 to March 2025 in Bulurejo Village, Rengel District, Tuban Regency, East Java. This research was designed using a completely randomised design (RAL) which was arranged factorially and consisted of two treatment factors. Factor The first factor is the provision of husk charcoal (A) which consists of four levels, namely A0: 0 g/plant (control), A1 100 g/plant (control), A2: 100 g/plant (control), A3: 150 g/plant (control): 150 g/plant, A2: 150 g/plant, A3: 200 g/plant. The second factor is the application of several concentrations of Gandasil B (G) consisting of four levels, namely: G0: 0 g/L (control), G1: 2 g/L, G2: 3 g/L, G3: 4 g/L. The results showed an interaction between the application of husk charcoal 200g/plant and the concentration of Gandasil B 3g/l (A3G2) which produced the highest number of total flowers per plant, total fruit per plant, and total fruit weight per plant but not significantly different from the treatment of a combination of the application of husk charcoal 150 g/plant (A2G2) and the concentration of Gandasil B 3 g/l and a combination of the aplication of husk charcoal 200 g/plant and the concentration of Gandasil B 4 g/l (A3G3).
Interactive Effects of AB Mix Nutrient and Gandasil D Fertilizer on Productivity of Pakcoy (Brassica rapa L.) in Wick Hydroponics Chintia Dinda Mellyaningtyas; Ramdan Hidayat; Yonny Koentjoro
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7814

Abstract

Background: National Pakcoy (Brassica rapa L.) production declined by approximately 9.69 % from 2022 to 2023 due to climate variability, suboptimal cultivation practices, and agricultural land-use conversion, highlighting the need for alternative production strategies. Wick-based hydroponic cultivation with optimized nutrient management using AB Mix and Gandasil D foliar fertilizer is therefore investigated for its potential to enhance nutrient uptake efficiency, vegetative growth, and yield of pakcoy in a sustainable manner. Methodology: the study conducted in Gubeng District, Surabaya, utilized a factorial Completely Randomized Design (CRD). The first factor was AB Mix concentration (500 ppm, 1000 ppm, 1500 ppm), and the second was Gandasil D foliar fertilizer concentration (Control, 1 g/L, 2 g/L, 3 g/L). Observation parameters include, plant length (cm), leaf area (cm2), total fresh weight, shoot fresh weight, and shoot dry weight. Further analysis was performed using the Honestly Significant Difference (HSD) test at a 5% significance level. Findings: showed a significant interaction between the AB Mix concentration and Gandasil D foliar fertilizer on the plant shoot dry weight, with the highest yield (6.27 g) achieved by the combination of 1500 ppm AB Mix and 2 g/L Gandasil D. The single treatment of 1500 ppm AB Mix concentration yielded the best average for all observed parameters, including: plant length (16.73 cm), leaf area (688.04 cm2), total fresh weight (64.15 g), shoot fresh weight (51.56 g), and shoot dry weight (6.27 g). The 2 g/L Gandasil D concentration treatment provided the highest results for total fresh weight (56.09 g) and shoot fresh weight (45.28 g). The combination of 1,500 ppm AB Mix and 2 g/L Gandasil D demonstrated the most optimal results for the growth and yield of pakcoy plants compared to other treatment combinations. Contribution: These findings provide information regarding the selection of the optimal AB Mix and Gandasil D concentrations to maximize the growth and yield of pakcoy in the wick hydroponic system, which can be utilized in educational or training programs for communities practicing urban farming
Co-Authors -, Moegijanto -, Mulyanto Adam Ankeda Asza Agus Sulistyono Agus Sulistyono Chintia Dinda Mellyaningtyas Dela Tri Astuti Lumban Gaol Denpharanto Agung Krisprimandoyo Dewanti, Felicitas Deru Djoko Purnomo Edi Purwanto F. Deru Dewanti Felicitas Deru Dewanti Guniarti Guniarti Guniarti, Guniarti Hadi Suhardjono Ida Retno Moeljani Judijanto, Loso Liliek Liliek Liliek, Liliek Marvin Julius Siagian Mitra Musika Lubis Nabilah Rizqiyah Rahma Dani Nabilah, Lutfiah Nova Triani Nova Triani Nurcahyo, Rizky Devin Nurwendah, Miftah Azzura Oktaviana Oktaviana Pribadi, Didik Utomo Puji Lestari Tarigan Ramdan Hidayat Rohmad Indrajaya Santoso, Juli Slamet Riyadi, Slamet Riyadi Soedjarwo, Djarwatiningsih Pongki Sugiarto Sukendah Sukendah Sukendah Sukendah Sutini