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All Journal PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Planta Simbiosa : Jurnal Tanaman Pangan dan Hortikultura Jurnal Agrotropika
Denny Sudrajat
Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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Aplikasi Trichoderma sp. dan pupuk NPK terhadap pertumbuhan dan hasil tanaman kedelai (Glycine max L.) varietas Grobogan Yuriansyah Yuriansyah; Denny Sudrajat; Zainal Mutaqin; Evi Yunita Sari; Juwita Suri Maharani
Planta Simbiosa Vol 5 No 1 (2023)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jplantasimbiosa.v5i1.2982

Abstract

Soybean imports in Indonesia show that national soybean production is still low and efforts are needed to increase production. One way to increase edamame production is the application of Trichoderma sp. and NPK fertilizers. The purpose of this study is to determine the effect of the application dose of Trichoderma sp. and NPK fertilizers and their combinations on the growth and yield of soybean plants. This study used a factorial Randomized Block Design (RBD) consisting of two factors, namely Trichoderma sp and doses of NPK fertilizer, repeated 3 times so that there were 30 experimental units. The treatment consisted of: factors (a) Trichoderma sp. dose: a0= 0 g/plant; a1= 5 g/plant; a2= 10 g/plant; a3= 15 g/plant; and a4 = 20 g/plant. Factor (b) NPK fertilizer dosage from 2 levels, namely: b1 = 250 kg/ha and b2 = 300 kg/ha. The results of this study are: (1) administration of Trichoderma sp. independently affects the growth observation variable in the vegetative phase of the plant, but does not significantly affect production; (2) NPK fertilizer independently affects plant growth in the vegetative phase and production yields; (3) combination treatment of Trichoderma sp. 15 g/plant and 250 kg/ha of NPK fertilizer gave the highest seed weight per plant, namely 30.95 g; and (4) there is an interaction effect between the Trichoderma sp. treatments. and NPK fertilizer on seed weight per plant.
Penerapan Pengendalian dengan Agens Hayati Lokal untuk Solusi Permasalahan Serangan OPT pada Tanaman Padi Organik di Desa Bumi Agung, Tegineneng, Pesawaran: Application of Control with Local Biological Agents to Solve OPT-Attack Problems on Organic Rice Plants in Bumi Agung Village, Tegineneng, Pesawaran Lina Budiarti; Ni Siluh Putu Nuryanti; Dulbari Dulbari; Yuriansyah Yuriansyah; Priyadi Priyadi; Rizky Rahmadi; Fajar Rochman; Denny Sudrajat; Evi Yunita Sari; Dewi Ermaya
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 8 No. 3 (2023): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v8i3.4659

Abstract

OPT problems are still a major obstacle to organic rice cultivation due to limited understanding and control skills. The aim of implementing community service activities is to provide additional skills and insight regarding OPT control technology with local biological agents to solve the problem of organic rice farming in Bumiagung village, Tegineneng, Pesawaran. Technology transfer activities regarding the application of control with local biological agents to solve the problem of pest attacks on organic rice plants were carried out in Bumiagung Village, Tegineneng, Pesawaran which were carried out in June - October 2022 to the Progressive Organic Farmers Community. The stages of the activity are carried out in stages through conducting surveys, providing material, pre-testing, training and mentoring, post-testing, monitoring, and evaluation at the end of the activity. Before the activity begins, a survey is carried out to analyze conditions and problems and analyze the solutions needed for these problems. Farmers need to gain more knowledge and skills in managing pests that attack their land. The controls that are often used are vegetable pesticides and refugia. From the final evaluation results, the analysis shows that farmers realize that control with biological agents is effortless, inexpensive, and synergistic in supporting organic farming.
EFEKTIVITAS KOMBINASI EKSTRAK DAUN KIRINYUH (Chromolaena odorata) DAN SURFAKTAN LERAK (Sapindus rarak) SEBAGAI BIOHERBISIDA RAMAH LINGKUNGAN TERHADAP GULMA Sphenoclea zeylanica Indrawan Indrawan; Rizky Rahmadi; Dulbari Dulbari; Denny Sudrajat
JURNAL AGROTROPIKA Vol. 25 No. 2 (2026): Jurnal Agrotropika Vol 25 No 2, Oktober 2026
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v25i2.10695

Abstract

Sphenoclea zeylanica weed is one of the dominant weeds in rice cultivation that can significantly reduce yields. The use of synthetic herbicides to control this weed often has negative impacts on the environment and health. Therefore, the use of natural ingredients such as siam weed leaf extract (Chromolaena odorata L.) and natural surfactants from soapberry fruit (Sapindus rarak DC.) is an environmentally friendly alternative. This study aims to determine the allelochemical effectiveness of siam weed leaf extract in controlling S. zeylanica weeds and determine the best dose combination with soapberry surfactant. The study was conducted from December 2023 to January 2024 at Polinela Organic Farm, Lampung State Polytechnic, using a Randomized Block Design (RBD) consisted of 7 treatments and 5 replications. The treatments consisted of control, siam weed extract concentrations of 10%, 20%, 30%, and a combination of siam weed with 3% soapberry surfactant. The parameters observed included weed plant height, wet weight, dry weight, SPAD index, toxicity (%), LT50, and ED50. Data were analyzed using ANOVA and continued with DMRT test at 5% level. The results showed that siam weed leaf extract was effective in suppressing the growth of S. zeylanica, indicated by a decrease in plant height, chlorophyll content, wet weight, and dry weight of weeds compared to the control. The combination of 30% kirinyuh extract with 3% soapberry fruit surfactant was the most effective treatment, with the fastest LT50 of 2.2 days. These findings indicate the potential of siam weed and soapberry fruit extracts as environmentally friendly natural bioherbicides for weed control. This finding showed the potential use of soapberry as a natural surfactant to improve weed suppression results.  
Co-Authors Dewi Ermaya Dulbari, Dulbari Evi Yunita Sari Fajar Rochman Indrawan Indrawan Juwita Suri Maharani Lina Budiarti Ni Siluh Putu Nuryanti Priyadi Priyadi Rizky Rahmadi Yuriansyah Yuriansyah Zainal Mutaqin