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INDONESIA
Jurnal Agrotropika
Published by Universitas Lampung
ISSN : 02167662     EISSN : 27457737     DOI : 10.23960
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Scientific article dealing with broad aspects of tropical agronomy including crop production, horticulture, plant pests and diseases, post-harvest, sustainable agriculture, soil science, climatology, ecology, biodiversity, and ethno-agronomy.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 252 Documents
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APLIKASI CAMPURAN AUKSIN NAA DAN IBA PADA PERTUMBUHAN DAN HASIL UBIKAYU Setiya Wati, Tri Agus; Yusnita, Yusnita; Asmara, Sandi; Karyanto, Agus; Widyastuti, Raden Ajeng Diana
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.10801

Abstract

The growth and production of cassava can be increased through various efforts, including the use of superior varieties, fertilization, the addition of organic materials, and the application of growth regulators (PGR). Naphthaleneacetic acid (NAA) and indole-3-butyric acid (IBA) are PGRs that have been widely documented to stimulate root initiation and development in cuttings. The application of aauxin mixtures on cassava cuttings followed by fertilization and the addition of organic materials is expected to improve the growth and yield of cassava. The aim of this experiment is to study the effects of the application of an NAA and IBA mixture (1:1) and the type of fertilizer on the growth and yield of the Garuda variety of cassava. This research is designed using a clustered randomized block method with three replications. The design used is factorial 2x3, consisting of two main treatment factors. The first factor is the combination of growth regulators NAA and IBA in a 1:1 ratio at three concentration levels, namely 0 ppm, 500 ppm, and 1,000 ppm. The second factor includes the type of fertilizer used, which is a single inorganic fertilizer and a combination of inorganic fertilizer with cow manure. Each experimental unit in this study consists of 10 cassava cuttings planted in an orderly manner with a planting distance of 1 meter x 1 meter between plants. The results of the experiment showed that the application of inorganic fertilizer produced plant growth and the number of productive roots equivalent to the use of inorganic fertilizer + cow manure. The application of a mixture of auxins NAA and IBA (1:1) at concentrations of 500 ppm and 1,000 ppm significantly increased the growth of shoots, the number and weight of productive roots of the Garuda variety cassava, but both treatments resulted in cassava growth and yield that were not different. Key words: Cassava, cow manure, growth, IBA, NAA, yield
RESPON PERTUMBUHAN DAN HASIL PADI VARIETAS IR NUTRIZINC TERHADAP APLIKASI BIOCHAR DAN BENZILADENIN Rafika, Eni; Yusnita, Yusnita; Karyanto, Agus; Hapsoro, Dwi; Pramono, Eko
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.10895

Abstract

Rice growth and yield can be increased through various efforts, including the use of "high-yielding varieties, fertilization, soil conditioners with application of plant growth regulators (PGRs). Soil conditioners namely as biochar are carbon products that can enhance plant productivity through enhancing the physical, chemical, and biological characteristics of the soil, while cytokinine benzyladenine (BA) is a PGR that has been widely documented to stimulate cell growth, cell division, and differentiation in rice plants. The purpose of this study was to determine the effect of biochar and benzyladenine (BA) on the growth and yield of the IR Nutrizinc rice variety. Data collection was carried out in October 2024 - February 2025 in Kampung Payung Rejo, Pubian District, Central Lampung Regency. The treatments were arranged factorially (2x3) using a completely randomized design with 3 replications. Factor I was without biochar and given 20 tons/ha of biochar. The second factor was 3 benzladenin (BA) concentrations, namely 0 ppm, 50 ppm, and 100 ppm applied by spraying on the surface of the plant at 20, 30, and 40-days after transplanting, while the biochar application was implemented 2 weeks before transplanting. Observed variables included plant height, maximum tillers per clump, count of productive tillers, length of panicles, and grains per panicle, percentage of empty grains per panicle, dry harvested grain yield, dry harvest grain yield, 1000 grain weight and dry weight of the crownThe Bartlett test was employed to assess the homogeneity of variance among treatments then analysis of variance was carried outIf a notable difference existed between treatments, the BNT test was carried out at the 5% significance level. The findings indicated that applying 20 tons/ha of biochar enhanced the yield components in terms of dry harvested grain, dry milled grain, and dry shoot weight The application of 50 ppm BA was able to increase the growth and yield of grain compared to without benzyladenine (BA). The combination of biochar and BA enhanced the growth and yield of grain in terms of the number of grains per panicle, dry harvested grain, and dry milled grain. The use of 20 tons/ha biochar combined with 50 ppm BA enhanced the yield of the IR Nutrizinc
EXTRACT OF MORINGA LEAF AND SEAWEED AS BIOSTIMULANT FOR INCREASING SUCCESS AND GROWTH OF COCOA (Theobroma cacao L.) SHOOT GRAFTING Ramdani, Muhammad Rizki; Evizal, Rusdi; Wibowo, Lestari; Ramadiana, Sri
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11102

Abstract

Cocoa (Theobroma cacao L.) is a plantation crop that contributes to Indonesia’s economy through export value and serves as the main source of income for farmers in major production centers. Grafting technology is widely used to increase productivity; however, its success rate remains low. The use of biostimulants derived from moringa leaf extract and seaweed extract offers an alternative solution to improve the success and growth of cocoa grafts. This study aimed to determine the effect of type and concentration of biostimulants on the success and growth of cocoa grafts. The research was conducted from December 2024 to February 2025 in Labuhan Dalam, Tanjung Senang District, Bandar Lampung City. A non-factorial randomized complete block design (RCBD) was used, consisting of 7 treatments and 3 replications. The treatments included a control (0 ml/l), moringa leaf extract at 150 ml/l, 300 ml/l, and 450 ml/l, as well as seaweed extract at 150 ml/l, 300 ml/l, and 450 ml/l. Data were analyzed using ANOVA and tested with the Least Significant Difference (LSD) at a 5% significance level. The results showed that the application of biostimulants had a significant effect on the time of shoot emergence, number of shoots, shoot length, shoot diameter, and leaf greenness. However, the treatments did not significantly affect the number of leaves, number of flushes, fresh weight of shoots, or dry weight of shoots. All biostimulant applications resulted in a 100% grafting success rate. The best concentration of both moringa leaf and seaweed biostimulant extracts was 300 ml/l. Key words: Biostimulants, moringa leaves, seaweed, shoot grafting
INDUKSI KALUS KRISAN (Chrysanthemum morifolium) DENGAN PENAMBAHAN BERBAGAI KOMBINASI PIKLORAM DAN BAP Farikha, Sabrina Nur; Habibah, Noor Aini
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11197

Abstract

Chrysanthemum (Chrysanthemum morifolium) contains secondary metabolites that are used as anticancer, anti-inflamantory, antioxidant, and antibiotic agents. In vitro techniques or tissue culture are considered capable of producing metabolites through callus culture with the addition of growth regulators (GRs). The objective of this study was to analyzed the effect of the type and concentration of Picloram and BAP on the formation of chrysanthemum callus. This study used a Completely Randomized Design (CRD) with two factors: treatment, consisting of the type of PGR (Picloram and BAP), and concentration, consisting of four treatment levels: 0 ppm, 1 ppm, 2 ppm, and 3 ppm. Quantitative data, including growth time, percentage, fresh weight and dry weight of callus, were analyzed using IBM SPSS Statistic 27, while qualitative data, including color and texture morphology of callus, were analyzed descriptively. The result show that Picloram has a significant effect on all observed parameters. The addition of BAP only affect the fresh weight of the callus, while the combination of Picloram and BAP affect both the fresh and dry weight of the callus. A Picloram concentration of 3 ppm was the most optimal treatment for all parameters, and the combination of 3 ppm Picloram + 3 ppm BAP produced the highest fresh and dry weights of the callus. The callus formed was predominantly yellowish-green in color with a crumbly texture. These findings indicate that the combination of 3 ppm Picloram + 3 ppm BAP is effective in increasing the efficiency of callus induction in C. morifolium.   Key words: BAP,callus, chrysanthemum, picloram
PENENTUAN UMUR PANEN BEBERAPA GENOTIPE PADI (Oryza sativa L.) BERDASARKAN SATUAN PANAS PADA SISTEM BUDIDAYA ORGANIK DAN NON ORGANIK Putri, Della Alvia Kusuma; Dulbari, Dulbari; Sudrajat, Denny; Subarjo, Subarjo; Jaya, Moh. Haris Imron S.
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11235

Abstract

Determining the harvest time of rice plants is one of the determining factors for the success of rice production. Calculation of harvest time can be done using the heat unit method. This study aims to calculate the accumulation of heat units of several rice genotypes (Oryza sativa L.) in organic and non-organic cultivation systems. This study was conducted in September-December 2023 at Polinela Organic Farm (POF), Lampung State Polytechnic (5°21'10"S 105°13'43"E, 114 m above sea level using a Randomized Complate Block Design (RCBD) with four rice genotypes (PTP 01, Inpari 24, Jaliteng, and Pandan Wangi), which were planted in two different cultivation systems and replicated three times. The results showed that the four rice genotypes used showed significant differences in the accumulation of heat units between organic and non-organic cultivation systems. Organic cultivation systems require a higher average heat unit (1193.1°C days) than non-organic systems (1146.3°C days). Organic cultivation systems provide more stable growth in grain weight per panicle, the number of filled grains per panicle, and fewer empty grains. This demonstrates the importance of genotype selection and cultivation system in optimizing production and harvest time.
SELEKSI DURA ANGOLA DIDASARKAN ANALISIS VARIASI FENOTIPE Lesmana, Bayu; Setiawan, Kukuh; Hapsoro, Dwi; Asmono, Dwi; Karyanto, Agus
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11259

Abstract

Indonesia remains the world’s leading producer of palm oil, contributing substantially to the national economy. Sustaining productivity growth requires the development of superior varieties characterized by high oil yield, reduced trunk height increment, and enhanced oil quality. Dura Angola, a germplasm originating from Africa and introduced by PT Binasawit Makmur in 2010, offers the potential to broaden the narrow genetic base of Dura while providing valuable agronomic traits. This study aimed to identify promising genotypes and select superior Dura Angola populations based on phenotypic variation and genetic parameters. The research was conducted at Mesuji Estate, PT Aek Tarum, South Sumatra, on 1,029 Dura Angola palms planted in 2012. Traits evaluated included yield components (bunch number, fresh fruit bunch weight, average bunch weight), vegetative growth (annual trunk height increment, rachis length, leaf area, frond production), and oil yield components (fruit-to-bunch ratio, mesocarp-to-fruit ratio, oil-to-wet mesocarp ratio, oil-to-bunch ratio, and oil extraction rate). Data were analyzed using an Unbalanced Incomplete Block Design within a General Linear Model framework, followed by estimation of heritability, genetic and phenotypic coefficients of variation, and trait correlations. Significant phenotypic variation was observed for most traits, with high heritability detected in bunch number, fresh fruit bunch weight, rachis length, leaf area, fruit-to-bunch ratio, and oil-to-bunch ratio. Based on the integration of genetic estimates and phenotypic performance, ten elite individuals were identified from accessions A074/20, A040/22, A040/12, A095/05, A041/26, A041/22, and A075/08. These individuals are recommended as potential female parents for introgression with elite Dura lines or to produce commercial D×P hybrids. The utilization of these selected Dura Angola individuals is expected to broaden the genetic base of Dura, improve breeding efficiency, and support the development of superior oil palm varieties for sustainable intensification.
EVALUASI MUTU FISIOLOGIS TERHADAP LIMA VARIETAS BENIH KEDELAI (Glycine max [ L.] merr) PADA PENYIMPANAN SUHU RUANG YANG BERBEDA AKIBAT ANOMALI CUACA EL NINO 2023 Fitria, Eliza; Agustiansyah, Agustiansyah; Timotiwu, Paul Benyamin; Hidayat, Kuswanta Futas; Purnomo, Purnomo
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11445

Abstract

Global climate change such as El Nino has serious impacts on the agricultural sector, especially soybean production which is very sensitive to water shortages. The government is responding by developing superior soybean varieties that are drought-resistant, such as Kemuning 1, Demas 1, and other varieties that have qualities equivalent to imported soybeans. A significant issue in soybean cultivation within tropical regions is the reduction in seed quality during storage, which is related to the high fat content present in orthodox seeds. Therefore, maintaining the physiological condition of the seeds until planting season requires controlling seed storage at optimal temperature and humidity levels. The results demonstrate that both cultivar and temperature affect the physiological quality of soybean seeds. The Grobogan and Dega 1 varieties produce better physiological quality compared to Deja 2, Dena 1, and Detap 1. Storing seeds at cold temperatures is more effective in maintaining seed viability and quality stability. Key words: Seed, soybean, seed storage, physiological quality  
TOKSISITAS NANOEMULSI EKSTRAK BIJI Annona muricata DAN Leucaena leucocephala DENGAN METODE FASE INVERSI DAN HOMOGENISASI TERHADAP HAMA Spodoptera frugiperda Ardiansyah, Sigit; Nuryanti, Ni Siluh Putu
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11573

Abstract

Spodoptera frugiperda is a polyphagous insect pest that attacks corn, sorghum, soybeans, wheat, and horticultural crops. The feeding activities of S. frugiperda larvae can lead to significant economic losses for farmers. Current efforts to control S. frugiperda still rely heavily on the use of chemical insecticides. However, the excessive or inappropriate use of chemical insecticides can lead to the survival of pests that are resistant to these treatments. Bioinsecticides are considered to have lower toxicity to both living organisms and the environment, which makes them a potentially ideal option for agricultural use. This study aims to test the toxicity both individually and in combination as well as the interaction properties of a mixture of Annona muricata and Leucaena leucocephala seed extracts in various ratios as bioinsecticides against S. frugiperda in sweet corn plants. The research methods consist of rearing S. frugiperda, extraction, bioinsecticide formulation, single and mixed toxicity tests, and the interaction properties of the mixture. The results of the study showed that the method of making nanoemulsions by homogenization showed better toxicity activity compared to the method of making nanoemulsions by inversion phase. The toxicity of nanoemulsions of mixed extracts of A. muricata and L. leucocephala seeds against S. frugiperda pests at a ratio of 1:2 was more toxic than the ratios of 2:1 and 1:1. The nature of the interaction of nanoemulsions of mixed extracts of A. muricata and L. leucocephala was more dominantly antagonistic.
EFIKASI DAN UJI SIFAT CAMPURAN HERBISIDA SAFLUFENACIL DAN TRIFLUDIMOXAZIN TERHADAP GULMA Ageratum conyzoides, Digitaria ciliaris, DAN Cyperus kyllingia Cahyani, Dwi; Sembodo, Dad Resiworo Jekti; Sriyani, Nanik; Pujisiswanto, Hidayat; Susanto, Herry
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11687

Abstract

This study aimed to evaluate the efficacy of single herbicides saflufenacil, trifludimoxazin, and their mixtures, as well as to determine the interaction characteristics of the saflufenacil and trifludimoxazin combination in weed control. The experiment was conducted in a Plastic House in Natar District, South Lampung Regency, from April to May 2025. A single-factor Randomized Block Design (RBD) was applied with 54 treatment combinations, consisting of 3 herbicide types at 6 dosage levels: single saflufenacil (0, 25, 50, 100, 200, and 400 g/ha), single trifludimoxazin (0, 12.5, 25, 50, 100, and 200 g/ha), and their mixtures (0, 37.5, 75, 150, 300, and 600 g/ha). Treatments were applied to 3 weed species: the broadleaf Ageratum conyzoides, the grass Digitaria ciliaris, and the sedge Cyperus kyllingia. Each treatment was replicated 6 times. The interaction analysis of herbicide mixtures was carried out using the Multiplicative Survival Model (MSM), since the two herbicides have different modes of action. The results showed that: (1) single saflufenacil was only effective in controlling Ageratum conyzoides at (25-400 g/ha). Single trifludimoxazin effectively controlled Ageratum conyzoides (12.5-200 g/ha), Digitaria ciliaris (200 g/ha), and Cyperus kyllingia (50-200 g/ha). The mixture of saflufenacil+trifludimoxazin effectively controlled Ageratum conyzoides (37.5-600 g/ha), Digitaria ciliaris (75-600 g/ha), and Cyperus kyllingia (300-600 g/ha). (2) With an expected LD50 value of 83.36, which was higher than the observed LD50 value of 67.33, a co-toxicity coefficient of 1.24 (>1) was obtained, indicating that the mixture exhibited a synergistic effect.
PENILAIAN EFEKTIVITAS PUPUK ANORGANIK NPK 12-10-22 TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS Diaguna, Ridwan; Suwarto, Suwarto; Sularno, Sularno; Sarjani, Alvita Sekar
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.8833

Abstract

The utilization of NPK fertilizer specifically formulated to meet the requirements of maize plants can contribute to improved nutrient absorption efficiency and maximized growth and yield. Choosing NPK fertilizer with a suitable nutrient content is a critical aspect in attaining optimal maize productivity. This study aimed to determine the effectiveness of inorganic NPK 12-10-22 fertilizer on the growth and yield of sweet corn (Zea mays saccharata L.). This study was conducted from November 2022 to February 2023 at the Sawah Baru Experimental Garden, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, Bogor, West Java. The study was arranged in a randomized complete block design with four replications. The fertilizer dose treatments consisted of six levels: without the tested fertilizer application (Control), Standard NPK fertilizer as a comparison (Standard NPK), 0.5 doses of NPK 12-10-22 (0.5 NPK), 1.0 dose of NPK 12-10-22 (1.0 NPK), 1.5 doses of NPK 12-10-22 (1.5 NPK), and 2.0 doses of NPK 12-10-22 (2.0 NPK). The application of 0.5 to 2.0 doses of inorganic NPK 12-10-22 fertilizer was able to produce growth characteristics, yield components, and yields of sweet corn plants that were equally as good as the standard treatment. The application of 2.0 doses of NPK 12-10-22 fertilizer even resulted in significantly higher cob weight and cob weight without husk compared to the standard dose. The application of 1.0, 1.5, and 2.0 doses of inorganic NPK 12-10-22 fertilizer produced RAE (Relative Agronomic Efficiency) values ≥ 95%, namely 111%, 104%, and 125% for sweet corn plants. The recommended dose of NPK 12-10-22 fertilizer is 545.5 kg per hectare, accompanied by 161 kg of urea, 48 kg of SP-36, and 80 kg of KCl per ha.

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