JURNAL AGROTROPIKA

SELEKSI DURA ANGOLA DIDASARKAN ANALISIS VARIASI FENOTIPE

2025-08-15T23:07:14+00:00

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.

APLIKASI LIMBAH CAIR KELAPA SAWIT DENGAN INTERVAL PEMBERIAN TERHADAP PERTUMBUHAN DAN PRODUKSI BERBAGAI VARIETAS JAGUNG MANIS (Zea mays saccharata Sturt)

2025-03-10T09:09:21+00:00

Palm oil plantations in recent years have grown rapidly in almost all parts of Indonesia. The existence of palm oil mills has positive and negative impacts. The negative impact for the community is liquid waste, But can utilized for agricultural purpose such as by using liquid waste fertilizer from palm oil mills. Sweet Corn is one of the commodities favored by the people of Indonesia because it tastes good and sweet, and contains many vitamins. However, the productivity of Sweet Corn in Bangka Belitung Islands is decreasing. This study aims to produce optimal Sweet Corn growth, by using from palm oil mills. This study used a split plot Randomized Block Design (RBD) with 3 replications. The main plot is sweet corn variety (V) consist of, V1= Super sweet variety, V2= Bonanza variety, V3= Paragon variety, and the subplot is the interval of application of palm liquid waste (P) consist of, P0= Control, P1= Interval once every 10 days, P2= Interval once every 20 days, P3= Interval once every 30 days. The results of statistical analysis showed that different varieties of sweet corn gave a significant effect on harvest age, cob diameter, cob weight with clobber, cob weight without clobber and yield per plot. Giving different intervals gives a significant effect on stem diameter and cob diameter. Bonanza variety is the best variety in sweet corn growth and production. Once every 10 days is the best interval for sweet corn growth and production. The interaction of paragon variety and interval of 10 days give the best result for the parameter of age of female flowering in sweet corn.

Key words: Interval pemberian, Pupuk organik, Limbah cair kelapa sawit, Jagung manis

IDENTIFIKASI HAMA TANAMAN KOPI DI KABUPATEN BANGKA TENGAH

2025-01-25T01:04:44+00:00

Coffee plants are one of the new commodities that are slowly being optimized by the Bangka Belitung Islands Province community, especially in Central Bangka Regency. In the production process, coffee plants have several obstacles, including pest attacks that can cause damage and reduce coffee production. This research needs to be conducted to identify the types of pests found in coffee plantations in Central Bangka as a basis for initial information to determine control measures. This study aims to identify the diversity and to determine the types of pests that most dominantly attack coffee plants in Central Bangka Regency. The research was conducted in April-July 2024; the research location was carried out in farmer's gardens in Celuak Village, Puput Village, Lampur Village, Munggu Village, Melabun Village, Jelutung Village and Lubuk Pabrik Village. Identification of pests that found at the research location was carried out at the Animal, Fish and Plant Quarantine Center Laboratory of the Bangka Belitung Islands. This research uses an exploration method and a survey technique. Determining the research location used the purposive sampling method and interviews with key informants through the Agricultural Extension Officer of Central Bangka Regency to obtain information about the criteria for coffee plant age ≥3 years. The sampling technique in this study was to determine the plot point (sample unit) using the simple random sampling method; 36 plants were taken in the research location. The results showed that the types of pests that attack coffee plants in Central Bangka Regency are Hypothenemus hampei, Ferrisia virgate, Dysmicoccus neobrevipes, Coccus viridis, Cephonodes hylas, Thosea vetusta, Xenocatantops humilis, snails, and rats with an average attack category of light to heavy. The type of pest with the highest percentage is the whitefly pest which attacks all coffee plantations used as research samples. The highest percentage of attacks is 43.42% and the intensity of attacks is 54.86%.

Kata kunci: Attack percentage, attack intensity, coffee, pest identification

PENGARUH KONSENTRASI DAN LAMA PERENDAMAN EKSTRAK RUMPUT LAUT TERHADAP PERKECAMBAHAN DAN PERTUMBUHAN VEGETATIF BENIH PADI

2025-01-25T00:31:09+00:00

The growth and production of paddy plants is influenced in the early growth phase during germination and vegetative growth. The aim of this research was to determine the effect of concentration and soaking duration of seaweed extract on the germination and growth of rice seeds. This research was carried out in April-May 2024 at UPT. PSBTPH East Java. Treatments were arranged factorial (4x3) using a Completely Randomized Design with 3 replications. Factor I is the concentration of seaweed extract (2 ml.l-1, 4 ml.l-1, 6 ml.l-1 and 8 ml.l-1). Factor II is the duration of soaking (12 hours, 24 hours dan 36 hours). Observation variables included germination capacity, maximum growth potential, wet weight of sprouts, dry weight of sprouts, coleoptile length, root length of seedlings, number of seedling leaves, height of seedlings, and total weight of seedlings. The results showed that the interaction between concentration and soaking time of seaweed extract had a real influence on the length of the seedling and the number of seedling leaves.

Key words: Biostimulant, nursery, rice, seeds

EXTRACT OF MORINGA LEAF AND SEAWEED AS BIOSTIMULANT FOR INCREASING SUCCESS AND GROWTH OF COCOA (Theobroma cacao L.) SHOOT GRAFTING

2025-07-02T23:48:27+00:00

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

PENGGUNAAN BEBERAPA BAHAN ORGANIK TERHADAP VIABILITAS DAN VIGOR BENIH CABAI RAWIT (Capsicum frutescens L.) KEDALUWARSA

2025-05-15T14:29:07+00:00

One of the techniques that can be applied to overcome seed decline is the invigoration technique using organic materials as priming, namely with young coconut water, bean sprout extract, and aloe vera extract. This study aims to determine the effect of the use of young coconut water, bean sprout extract and aloe vera extract on the viability and vigor of expired cayenne pepper seeds. This study was conducted at the Seed Laboratory of the Agrotechnology Department, Bangka Belitung University. This study used a Completely Randomized Design (CRD) treatment. The treatment given was in the form of organic materials used for priming (Z) with 4 levels of treatment, namely (z₀) control, (z₁) young coconut water with a concentration of 15%, (z₂) bean sprout extract with a concentration of 80%, and (z₃) aloe vera extract with a concentration of 50%. Soaking expired cayenne pepper seeds is done for 1 hour. The results of this study indicate that expired cayenne pepper seeds soaked in young coconut water with a concentration of 15% (z₁) can increase the parameters of maximum growth potential, seed germination rate, vigor index, plumule length, and dry weight of normal seed sprouts which are better than the control although not significant. The treatment of soaking expired cayenne pepper seeds with organic materials had no significant effect, thought to be due to inaccuracy in the soaking dosage, soaking duration, and abscisic acid content in one of the materials used.

Key words: Expired Seeds, Invigoration, Natural Growth Regulator

APLIKASI CAMPURAN AUKSIN NAA DAN IBA PADA PERTUMBUHAN DAN HASIL UBIKAYU

2025-06-11T09:14:51+00:00

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

KAJIAN FORMULASI NUTRISI AB MIX DAN VARIETAS TERHADAP HASIL CABAI KERITING (Capsicum annum L.) SECARA HIDROPONIK

2025-05-22T08:36:03+00:00

The problem faced by hydroponic farmers in cultivating chili peppers is the lack of an optimal AB Mix nutrient formula that can be synthesized independently using chemical fertilizers readily available in agricultural supply store. This study aims to evaluate the effects of AB Mix nutrient formulation and variety on yield of curly chili peppers (Capsicum annuum L.) in hydroponic system. The experimental design was a Randomized Block Design (RBD) in 2-factor split-plot arrangement with three replications. The main plots consisted of four nutrient formulations. The subplots consisted of plant varieties, which included the Lado Juara F1 variety, the Joker genotype, and Lolay genotype. The result of the study showed that increasin of the concentration of the AB Mix nutrient formulation from N1 to N2 enhanced the number of fruits and the fruit weight per plant, both in the Lado Juara, Joker, and Lolay varieties. However, further increases the concentration of the AB Mix nutrienr formulation from N2 to N3 and N4 decreased the number of fruits and the fruit weight per plant in any of varieties. The use of the Lado Juara variety resulted in higher numbers of fruits and fruit weight per plant compared to the Joker and Lolay genotypes across all AB Mix nutrient formulations with a drip irrigation hydroponic system.

Key words: Chili, formulation, hydroponic, nutrition, variety

INDUKSI KALUS KRISAN (Chrysanthemum morifolium) DENGAN PENAMBAHAN BERBAGAI KOMBINASI PIKLORAM DAN BAP

2025-07-09T13:22:27+00:00

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

EVALUASI MUTU FISIOLOGIS TERHADAP LIMA VARIETAS BENIH KEDELAI (Glycine max [ L.] merr) PADA PENYIMPANAN SUHU RUANG YANG BERBEDA AKIBAT ANOMALI CUACA EL NINO 2023

2025-08-05T07:40:38+00:00

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

PENGARUH KOMBINASI BIOCHAR SABUT PINANG DAN PUPUK NPK TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAWANG DAUN PADA TANAH ALUVIAL

2025-07-02T13:58:57+00:00

Yield of green onion has been declining annually in West Kalimantan where land for cultivating green onion is alluvial soil. This study aims to determine the optimal dosage of a combination of areca husk biochar and NPK fertilizer on the growth and yield of green onion plants in alluvial soil. The research was conducted in Sungai Kakap District, Kubu Raya Regency, West Kalimantan Province, from September to November 2024. A non-factorial Randomized Block Design (RBD) comprised six treatments and four replications: b1 = biochar 2 tons.ha⁻¹ + NPK fertilizer 90% (270 kg.ha⁻¹), b2 = biochar 4 tons.ha⁻¹ + NPK fertilizer 80% (240 kg.ha⁻¹), b3 = biochar 6 tons.ha⁻¹ + NPK fertilizer 70% (210 kg.ha⁻¹), b4 = biochar 8 tons.ha⁻¹ + NPK fertilizer 60% (180 kg.ha⁻¹), b5 = biochar 10 tons.ha⁻¹ + NPK fertilizer 50% (150 kg.ha⁻¹), and b6 = biochar 12 tons.ha⁻¹ + NPK fertilizer 40% (120 kg.ha⁻¹). The observed variables included plant height, number of leaves, number of tillers, fresh weight, root volume, and dry weight. Data obtained from observations were analyzed using Analysis of Variance (ANOVA). If significant differences were found, a DMRT test at a 5% significance level was conducted to determine differences among treatments after obtaining the coefficient of variation (KK). The results showed that the treatment of biochar 10 tons.ha⁻¹ + NPK fertilizer 50% (150 kg.ha⁻¹) was the best dosage, significantly affecting plant height, number of leaves, number of tillers, fresh weight, root volume, and dry weight. Further research is recommended using different doses of areca husk biochar and NPK fertilizer, as well as incorporating additional factors, to evaluate their effects on the growth and yield of green onion plants in different soil types.

RESPON PERTUMBUHAN DAN HASIL PADI VARIETAS IR NUTRIZINC TERHADAP APLIKASI BIOCHAR DAN BENZILADENIN

2025-07-08T02:32:59+00:00

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

RESPON PERTUMBUHAN DAN PRODUKSI KACANG TANAH TERHADAP PEMBERIAN LIMBAH CAIR KELAPA SAWIT DAN PUPUK NPK

2025-02-25T04:07:20+00:00

Groundnut (Arachis hypogaea L) is the most important commodity after soybean which has a strategic role as a national food source as a source of protein and vegetable oil. The use of inorganic fertilizers must be balanced with organic fertilizers that can help improve soil properties damaged by the use of inorganic fertilizers. The goal of this study was to ascertain how NPK dosages and palm oil liquid waste interacted to influence groundnut plant development and yield. The Randomized Group Design (RAK) is the design employed in this study. The first factor is palm oil liquid waste with a dose of L1 = 100, L2 = 200, L3 = 300 ml/plant. While the second factor is NPK with a dose of P0 = 0% (without NPK fertilizer), P1 = 25% (1 gram/plant, P2 = 50% (2 grams/plant), P3 = 100% (4 grams/plant). The parameters observed were plant height, number of leaves, flowering age, number of flowers, number of filled pods, number of empty pods, weight of filled pods, weight of empty pods, wet weight of stover, dry weight of stover, weight of 100 seeds. The best treatment is the combination of 300 ml/plant of palm liquid waste and 50% (2 grams/plant) NPK (L3P3). The best treatment is 50% NPK (2 grams/plant) (P2).

THE EFFECT OF LIQUID ORGANIC FERTILIZER (LOF) DERIVED FROM LEUCAENA LEAVES (Leucaena leucocephala) AND PINEAPPLE PEELS (Ananas comosus L.) ON PAK CHOI (Brassica rapa subsp. chinensis) GROWTH

2025-04-23T23:34:23+00:00

Rapid population growth and increasing demand for high-quality food drive the need for innovation in the agricultural sector. The main challenge faced is how to enhance production efficiency and the quality of agricultural yields sustainably. Pak choi, one of the fast-growing crops in Indonesia, requires special attention through various innovations to support its optimal growth. One of the key factors in pak choi growth is fertilization. However, the continuous use of synthetic fertilizers can damage soil fertility. As a sustainable alternative, Liquid Organic Fertilizer (LOF) has been developed from recycled green waste, specifically Leucaena leaves and pineapple peels. This study aims to evaluate the effects of LOF application derived from these organic waste materials on pak choi growth. This research was conducted in Sugih Waras Village, Belitang Mulya District, East OKU Regency. The research method used was a Completely Randomized Design (CRD) with 5 treatments and 3 replications. Data were analyzed using ANOVA and further tested with HSD at a 5% significance level. The results showed that the application of LOF had the best effect in the treatment was 45 ml LOF/polybag, with plant height reaching 21 cm, 23 leaves, root length of 15 cm, fresh plant weight of 116 grams, and dry plant weight of 12.1 grams.

PENENTUAN UMUR PANEN BEBERAPA GENOTIPE PADI (Oryza sativa L.) BERDASARKAN SATUAN PANAS PADA SISTEM BUDIDAYA ORGANIK DAN NON ORGANIK

2025-07-12T23:37:36+00:00

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.

EFIKASI DAN UJI SIFAT CAMPURAN HERBISIDA SAFLUFENACIL DAN TRIFLUDIMOXAZIN TERHADAP GULMA Ageratum conyzoides, Digitaria ciliaris, DAN Cyperus kyllingia

2025-09-27T22:49:26+00:00

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 LD₅₀value of 83.36, which was higher than the observed LD₅₀value of 67.33, a co-toxicity coefficient of 1.24 (>1) was obtained, indicating that the mixture exhibited a synergistic effect.

TOKSISITAS NANOEMULSI EKSTRAK BIJI Annona muricata DAN Leucaena leucocephala DENGAN METODE FASE INVERSI DAN HOMOGENISASI TERHADAP HAMA Spodoptera frugiperda

2025-08-28T04:13:11+00:00

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.

KERAGAMAN KARAKTER KUANTITATIF PADA TIGA GALUR HARAPAN MENTIMUN (Cucumis sativus L.) DI DATARAN MENENGAH

2025-09-14T22:58:54+00:00

Breeding lines in crop improvement represent selected genotypes with potential to be developed into superior cultivars. This study aimed to evaluate the genetic variability, adaptability, and yield stability of promising cucumber lines under mid-altitude conditions. The experiment was conducted from December 2024 to February 2025 at the PT. Aditya Sentana Agro experimental farm, Girimoyo Village, Malang, East Java, at an altitude of 525 m above sea level. A randomized complete block design (RCBD) was applied with three cucumber breeding lines and four commercial check varieties, namely New Oris F1, Renata F1, Madavi F1, and Zatavy F1. Each treatment was replicated four times with six plants per plot. Data were analyzed using ANOVA, followed by Duncan’s Multiple Range Test (DMRT) at the 5% significance level when significant differences were detected. The results revealed significant variation in several traits, including days to flowering, fruit length, fruit weight per plant, and yield, while no significant variation was observed in harvesting time, fruit diameter, fruit weight per fruit, and number of fruits per plant. The earliest flowering was observed in Line C (26.25 DAS), although it was later than the check variety Madavi (25.26 DAS). The longest fruit length was obtained from Line A (23.05 cm), surpassing both other lines and check varieties. Line A also produced the highest fruit weight per plant (1354.42 g), yet it remained lower than Zatavy (1421.92 g). Similarly, the highest yield was recorded in Line A (31.31 t ha⁻¹), although still below Zatavy (32.87 t ha⁻¹).

PENILAIAN EFEKTIVITAS PUPUK ANORGANIK NPK 12-10-22 TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS

2024-11-02T22:46:05+00:00

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.

PENGARUH APLIKASI PUPUK ORGANIK CAIR (POC) KOTORAN KAMBING DAN SAPI TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN UTAMA

2025-08-15T23:45:47+00:00

This study investigates the efficacy of liquid organic fertilizers (POC) derived from goat and cow manure as environmentally friendly alternatives for enhancing oil palm seedling growth. Conducted at the Oil Palm Nursery Unit of Politeknik Negeri Lampung (January–June 2024), the experiment employed a factorial randomized block design. Two factors were tested: POC from goat manure (0, 100, and 200 ml per seedling) and POC from cow manure (same levels). Growth parameters observed included seedling height, stem diameter, leaf count, leaf chlorophyll content, and leaflet area. Data were analyzed using ANOVA at a 5% significance level, followed by Least Significant Difference tests for mean comparison where applicable. Results show that goat manure POC at 200 ml per seedling significantly improved seedling height, leaf count, and chlorophyll content, while cow manure POC at the same dose enhanced height, stem diameter, and leaf number most effectively. No significant interaction effect between goat and cow manure treatments on any growth parameter was observed. These findings suggest that both goat and cow manure-derived liquid organic fertilizers, applied at 200 ml per seedling biweekly, can optimally support early growth of oil palm seedlings. However, their combined application did not yield synergistic benefits. The use of these organic fertilizers offers a sustainable alternative to conventional synthetic fertilizers and may contribute to improved nursery management practices in oil palm cultivation.