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All Journal Perkebunan dan Lahan Tropika JURNAL AGROTEKNOLOGI
Julianto, Bayu
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Agriculture, Biological Sciences & Forestry Environmental Science

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EFIKASI DAN EFEKTIVITAS FORMULASI DAUN MELADA (Piper colubrinum Link) SEBAGAI ATRAKTAN HAMA LALAT BUAH (STUDI KASUS PERTANAMAN CABAI) Feby, Febrina; Sepianto, Sepianto; Julianto, Bayu; Hidayat, Hidayat; Januarti, Putri; Simamora, Cico Jhon Karunia
Jurnal Agroteknologi Vol 15, No 1 (2024): Agustus 2024
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/ja.v15i1.31558

Abstract

Fruit flies ( Bactrocera spp.) represent a group of Plant Pests that can inflict both qualitative and quantitative losses. The utilization of chemical pesticides and the scarcity of Methyl Eugenol continue to pose significant challenges in agriculture. The abundant availability of Melada plants presents an opportunity for the development of an economically viable and environmentally friendly biological attractant. Encapsulation technology based on Maltodextrin and Gum Arabic (MD-GA) formulated with powdered simplicia of Melada leaves F1(02:10), F2(05:10), F3(10:10), and F4(12:10) is employed to enhance the slow-release resistance of volatile compounds. The surface oil content of the four formulations ranges from 0.3% to 9.6%. The encapsulation efficiency value for the four formulations ranges from 70% to 85%. The loading capacity value ranges from 0.7% to 1.3%. The yield value of microcapsule characteristics ranges from 63% to 82%. Morphological analysis reveals a decrease in the number of particles along with the combination of treatment formulations. The size of the microcapsules for the four formulations falls within the range of 201.2 µm–252.6 µm. The effectiveness of the resulting attractant can lure 19-185 fruit flies. The diversity of the fruit fly pest population obtained includes the Bactrocera umbrosa and Bactrocera melastomatos species. The total value of the best formulation for the four treatments ranged from 0.3% to 0.5%. The optimization of the best biological attractant application with high development potential lies in the encapsulation formulations F3 and F4.
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
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.
Co-Authors . Supriyanto Feby, Febrina Hidayat Hidayat Januarti, Putri Muhammad Pramulya, Muhammad Sepianto, Sepianto Simamora, Cico Jhon Karunia