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All Journal Jurnal Ilmu Pertanian Indonesia Perkebunan dan Lahan Tropika JURNAL PERBENIHAN TANAMAN HUTAN JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Kebijakan dan Pelayanan Publik Jurnal Perlindungan Tanaman Indonesia JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Pertanian Agros Policy Brief Pertanian, Kelautan, dan Biosains Tropika
. Supriyanto
Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences

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Fruit Set Percentage And Oil Palm Production In Smallholder Plantations In Sungai Kunyit Village, Sekadau Hilir Sub-District,Sekadau District. Ferdyanto, Pius Paternus; Supriyanto, Supriyanto; Sulistyowati, Henny
Perkebunan dan Lahan Tropika Vol 15, No 1 (2025)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/plt.v15i1.90651

Abstract

The productivity of oil palm between smallholder farmers and companies influenced by cultivation practices, such as fertilization, pruning, pest and disease control, and the pollination process. This study aims to analyze the fruit set percentage and oil palm production in Dusun Amak, Sungai Kunyit Village, Sekadau Hilir Sub-district, and to identify the influence of pollinating insect populations and the percentage of male flowers on fruit set. The research was conducted in smallholder oil palm plantations using survey and interview methods. The survey included tree census, fruit and bunch sampling, pest and disease observation, pollinating insect counting, and average bunch weight measurement. Unstructured interviews were conducted with farmers to supplement the data. The results showed a fruit set percentage of 67.87%, lower than the optimal potential of 80% for 10-year-old oil palm trees. Although male flowers were sufficient, the low population of pollinating insects (Elaeidobius kamerunicus) led to suboptimal pollination, resulting in a lower fruit set.
Respons Pertumbuhan dan Hasil Tanaman Edamame terhadap Pemberian Pupuk Guano dan Biochar Sekam Padi di Tanah PMK Devita, Kajol; Supriyanto, Supriyanto; Syahputra, Edy
Perkebunan dan Lahan Tropika Vol 15, No 2 (2025)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/plt.v15i2.96076

Abstract

Edamame (Glycine max (L.) Merrill) is a type of soybean that can be consumed as a vegetable or snack. PMK soil has several limitations, including compact soil structure and low nutrient content. One way to address these issues is by applying guano fertilizer and rice husk biochar. This study aims to determine the growth response and yield of edamame soybeans to the application of guano fertilizer and rice husk biochar in PMK soil, to examine the interaction between guano fertilizer and rice husk biochar in PMK soil, and to identify the optimal dosage of guano fertilizer and rice husk biochar for enhancing the growth and yield of edamame soybeans in PMK soil. The research was conducted on the land of Asrama Mahasiswa Bengkayang, Bansir Darat, Pontianak Southeast and was conducted in the month June-August 2024. The experimental design used was a factorial completely randomized design (RAL) consisting of two factors. The first factor was the application of guano fertilizer with doses of g1 = 8 ton/ha, g2 = 10 ton/ha, and g3 = 12 ton/ha. The second factor was the application of rice husk biochar with doses of b1 = 8 ton/ha, b2 = 10 ton/ha, and b3 = 12 ton/ha.The results showed that guano fertilizer influenced plant height at 3 and 4 weeks after planting (WAP), dry weight, root volume, root nodules, pod weight, and pod number. Meanwhile, rice husk biochar affected root volume and root nodules. An interaction between guano fertilizer and rice husk biochar was observed in the root nodule variable. The application of guano fertilizer and rice husk biochar at a dose of 10 tons/ha was found to be effective and efficient in enhancing the growth and yield of edamame soybeans.
UJI KETAHANAN MELADA TERHADAP CEKAMAN KEKERINGAN Arifin, Nur; Sarbino, Sarbino; Supriyanto, Supriyanto; Pramulya, Muhammad; Ruliyansyah, Agus; Sulistyowati, Henny
Agros Journal of Agriculture Science Vol 26, No 4 (2024): Edisi Oktober
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i4.4843

Abstract

Pepper is one of the important commodities in Indonesia. The main obstacles In pepper cultivation is basal stem rot. It can be solved by grafting pepper plants on rootstock that is resistant to that disease. Melada plants (Piper colubrinum Link) are considered resistant to stem rot disease and are also resistant to flooding and drought. The aim of this research was to test the resistance of melada plants to drought stress. The research was carried out using a completely randomized design consisting of five treatments with five replications, and every treatment unit consisting of three plants. Melada cuttings are planted in plastic pots. After 5 months, the seedlings were treated with drought stress by irrigating using a Polyethylene glycol (PEG) solution with concentrations of 0%, 10%, 15%, 20%, and 25% for two months. Data were analyzed using analysis of variance. The results showed that drought stress treatment reduced plant growth in the variables  leaves number and fully opened leaf area. Melada plants are resistant to drought stress up to an osmotic pressure level of -4.5 bar, equivalent to 15% PEG. Apart from reducing growth, drought stress causes necrotic damage on the leaves starting from the edges of the leaves.
Pengaruh Aplikasi Biochar Sekam Padi Dan Umur Panen Terhadap Hasil Ubi Jalar Naruto Kintoki Pada Tanah Podsolik Merah Kuning Julianto, Bayu; Supriyanto, Supriyanto; Pramulya, Muhammad
Perkebunan dan Lahan Tropika Vol 15, No 2 (2025)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/plt.v15i2.96031

Abstract

Naruto Kintoki sweet potato (Ipomoea batatas L.) is a superior variety valued for its sweet taste and soft texture, but its cultivation in Indonesia remains limited. This study aimed to examine the interaction between rice husk biochar application and harvest age on the yield of Naruto Kintoki grown in ultisol soil. The research was conducted in the Pontianak Kota District, from September 2024 to February 2025. A factorial Completely Randomized Design (CRD) was used with two factors: biochar (2, 4, and 6 tons/ha) and harvest age (90, 105, and 120 days). Results showed significant interaction effects on growth and yield. A harvest age of 120 days with 4 tons/ha biochar produced the longest main vine (176.79 cm) and the largest tuber diameter (55.28 mm). The highest tuber number (4.60) and tuber weight (447.51 g) were found with 120 days and 6 tons/ha biochar. This study contributes to scientific knowledge by demonstrating how biochar and harvest timing influence both yield and tuber quality. It supports the sustainable cultivation of Naruto Kintoki in acidic, nutrient-poor ultisol soils and provides a model for optimizing sweet potato production on marginal tropical lands.
Pengaruh Umur Panen terhadap Hasil Ubi Jalar Cilembu pada Tanah PMK Fernando, Lexy; Supriyanto, Supriyanto; Arifin, Nur
Perkebunan dan Lahan Tropika Vol 15, No 2 (2025)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/plt.v15i2.96033

Abstract

Sweet potato (Ipomoea batatas L.) is a widely cultivated crop in Indonesia, valued for its high economic potential and versatility. The Cilembu variety, originating from West Java, has been recognized for its high yield potential. This study aimed to determine the optimal harvest time for Cilembu sweet potatoes grown on PMK soil. Conducted from September 2024 to February 2025, the research employed a completely randomized design (CRD) with five treatments (harvest times: 3, 3.5, 4, 4.5, and 5 months) and four replications. Variables observed included fresh weight, dry weight, tuber weight, diameter, number of tubers, sugar content, moisture content, and fiber content. Results showed that harvest time significantly affected tuber diameter, tuber weight, and sugar content. The study concluded that harvesting at 4 months yields optimal tuber weight and diameter with standard fiber and moisture content, while the highest sugar content was achieved at 3.5 months. This research contributes to optimizing sweet potato cultivation practices, enhancing yield quality and quantity
Penapisan Jamur Antagonis Ganoderma sp. dari Tanaman Palmae di Kabupaten Kubu Raya Kalimantan Barat Supriyanto, Supriyanto; Sulistyowati, Henny; Arifin, Nur
Perkebunan dan Lahan Tropika Vol 16, No 1 (2026)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/plt.v16i1.90351

Abstract

Screening of Ganoderma Antagonistic Fungi from Palmae Roots in Kubu Raya Regency, West Kalimantan, Indonesia. Basal stem rot (BSR) disease, caused by the pathogen Ganoderma sp., is the most important disease in palms (Arecaceae, formerly known as Palmae). To date, there is no effective method for controlling Ganoderma. In oil palms, several methods developed can only slow the rate of infection or extend the plant's productive period. Biological control is an alternative method for controlling Ganoderma and is currently under development. However, the development of biological control is hampered by its limited distribution. The most feasible approach is to identify effective indigenous antagonists from the rhizosphere of palms and develop methods for their utilization. This is because the palm family is a group of plants with high species diversity, so it is suspected that they also have a high diversity of rhizosphere fungi. Therefore, it is suspected that there are fungi antagonistic to Ganoderma that can be used as biological control agents against Ganoderma sp. This effort can be done by isolating and screening microorganisms from the rhizosphere of palm plants for their ability to act as antagonists against Ganoderma, and testing their activity in the rhizosphere of palm plants under various combinations of environmental factors thought to support their effectiveness in controlling Ganoderma. Specifically, this research aims to identify Ganoderma antagonists from the rhizosphere of palm plants in West Kalimantan that are effective in controlling BPB disease. The research has been conducted by isolating and testing the ability of fungi from the roots of palm plants in West Kalimantan in controlling Ganoderma sp. The results showed that 50.97% of fungi isolated from palm roots inhibited Ganoderma growth in vitro, with inhibition ranging from 70% to 83%. Given this ability, further testing is needed to determine the effectiveness of these fungi in controlling stem rot disease caused by Ganoderma in palm plants.
Co-Authors . Nurwansyah Achmadi Priyatmojo Achmadi Priyatmojo Ade Aldiansyah Zaedar agus ruliyansyah Amira, Lola Aprizkiyandari, Siti Arifin, Nur Arum Sekar Wulandari Bigcas, Evelyn V. Dede Solehudin Devita, Kajol Diana Prameswari Edy Syahputra Erna Pangestu Ferdyanto, Pius Paternus Fernando, Lexy Hannum Wulan Febrianingrum Henny Sulistyowati Henny Sulistyowati Heny Wulandari Imam Suswanto Iman Suswanto Julianto, Bayu Komariyati Komariyati Muhammad Pramulya Muhammad Pramulya, Muhammad Nazhira Firda Yulia Normalita Puteri, Afira Afra Nur Arifin Nur Arifin, Nur Nursadin Nursadin P. Perdinan Pramulya, Muhammad Purwanto Purwanto Rhomi Ardiansyah ROSITA, Risa Ruliyansyah, Agus S H Poromarto Sarbino Sarbino Sarbino, Sarbino Saripudin Saripudin Sri Widayanti Sulistyowati, Henny Supyani Supyani Suryanti, Widya Aini TRIS HARIS RAMADHAN Triwidodo Arwiyanto Triwidodo Arwiyanto Zakiatulyaqin Zakiatulyaqin Zulhamsyah Imran