Jurnal Agroekoteknologi
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Eksplorasi dan Uji Antagonis Bakteri Endofit Dari Daun Tanaman Mangrove Avicennia sp. Terhadap Jamur Patogen Alteria sp. Secara In Vitro
Full text linkMangrove (Avicennia sp.) merupakan salah satu ekosistem penting yang sering ditemukan di muara sungai yang memiliki kemampuan untuk tumbuh dan berkembang di zona salinitas tinggi. Salah satu jenis tanaman mangrove yang bermanfaat dan terdapat berbagai jenis bakteri endofit adalah Avicennia marina. Oleh karena itu, penelitian ini bertujuan untuk mendapatkan isolat bakteri endofit yang berpotensi sebagai agensia hayati pada daun tanaman bakau Avicennia sp. terhadap cendawan patogen Alternaria sp. Metode isolasi yang digunakan adalah penanaman langsung. Pengujian antagonis dilakukan dengan metode dual culture melalui pengukuran diameter zona hambat. Sampel yang diambil adalah daun yang sehat dan segar. Bakteri endofit yang diperoleh sebanyak 24 isolat bakteri yang memiliki morfologi yang berbeda. Diameter zona hambat dengan kategori kuat adalah isolat D28 sebesar 12,5 mm dengan kategori kuat dan kategori sedang adalah isolat D13, D19 sebesar 7,5 mm; 8,5 mm. Mekanisme kerja bakteri endofit adalah antibiosis dan kompetisi ruang. Hasil penelitian ini dapat disimpulkan bahwa terdapat bakteri endofit dari daun mangrove Avicennia sp. yang berpotensi sebagai antijamur terhadap jamur patogen Alternaria sp
Produksi Biomassa Stevia (Stevia rebaudiana B.) pada Perbedaan Umur Panen dan Tinggi Pangkas
Full text linkTanaman stevia (Stevia rebaudiana B.) merupakan tanaman obat yang memiliki daun manis dan dapat digunakan sebagai pemanis alami. Stevia dapat menjadi alternatif pengganti gula tebu yang memiliki manfaat sebagai obat diabetes, hipertensi dan obesitas. Stevia telah banyak dibudidayakan dan digunakan di banyak negara seperti Malaysia, Korea, China dan Singapura. Penelitian dilakukan pada bulan April sampai dengan Juli 2024 di perkebunan Gunadarma University Technopark (UG-TechnoPark). Penelitian ini dilakukan dengan metode Rancangan Acak Kelompok Lengkap (RAL) faktorial yang terdiri dari 2 faktor (3 × 3) yaitu faktor I (umur panen) yang terdiri dari 3 taraf yaitu 80 HSS (R1), 100 HSS (R2), dan 120 HSS (R3). Faktor II (tinggi pemangkasan) yang terdiri dari 3 taraf yaitu 5 cm (P1), 10 cm (P2), 15 cm (P3). Setiap perlakuan diulang sebanyak 4 kali ulangan sehingga terdapat 36 satuan percobaan. Hasil penelitian menunjukkan bahwa umur panen dan tinggi pemangkasan stevia tidak berpengaruh nyata terhadap pertumbuhan dengan parameter luas daun. Umur panen berpengaruh nyata terhadap hasil biomassa dengan parameter bobot tajuk, panjang tajuk, bobot basah daun, dan bobot kering daun yang menunjukkan bahwa semakin panjang (120 HSS) stevia dipanen terlebih dahulu maka hasil biomassa yang dihasilkan semakin banyak. Tinggi pemangkasan berpengaruh nyata terhadap persentase tanaman yang hidup setelah panen dan jumlah daun yang tertinggal, hal ini menunjukkan bahwa pemanenan stevia memerlukan ketinggian minimal 15 cm dari permukaan tanah
Jenis Hama Buah Kakao dan Tingkat Serangannya di Kota Payakumbuh, Sumatera Barat
Full text linkCocoa is a main commodity in contributing to Indonesian foreign exchange. The main problem in cocoa cultivation is cocoa pod pest that could decrease production significantly. The research aimed to know the cocoa pod pests and attack level in Payakumbuh municipality. The study was conducted in Payakumbuh municipality and Laboraory of Pest, Faculty of Agriculture, Riau University from October to December 2023. Survey method was used in the study and purposive random sampling was used to determine the sampling. The criteria to determine the locations were ± 0.5 hectare of cocoa plantation and age of cocoa plant ± 4 years. According to criteria, 2 districts were chosen, Lamposi Tigo Nagari and Payakumbuh Timur. In each district, 5 sub-districts were chosen and in each sub-district, 2 cocoa plantations were chosen. The imaginary diagonal line was formed to determine the sampling plants. The result showed that there were four pests that attacked cocoa pod in Payakumbuh, Cocoa pod borer (CPB) (Conopomorpha cramerella), Helopeltis spp., rat and squirrel.The percentage of attacked plant by CPB was 10.60%, percentage of attacked pod was 1.46% and attack intensity was 0.66%. For Helopletis spp., the percentage of attacked plant was 78.20%, the percentage of attacked pod was 57.75% and attack intensity was 37.50%. The percentage of attacked plant by rat and squirrel was 52.50% and the percentage of attacked pod was 42.17%
Pengaruh Perbedaan Tingkat Konsentrasi Nutrisi Terhadap Pertumbuhan dan Hasil Beberapa Varietas Tanaman Sawi Hijau (Brassica Juncea L.) Pada Sistem Aeroponik Cerdas
Full text linkThe increase in demand for mustard greens requires an increase in production by using superior varieties and improving cultivation techniques, one of which is using an aeroponic system. Aeroponics is a hydroponic technique where the plants are suspended in the air. Aeroponic systems can now be combined with IoT (Internet of Things) devices called smart aeropoics systems. The purpose of this research is to find out the effect of different varieties of mustard greens and nutrient concentrations on the growth and yield of mustard greens with a smart aeroponics system. The research was conducted in the UG Technopark Smart Farming Greenhouse from May to July 2023 using a Randomized Complete Group Design Nested Design consisting of two factors, namely factor I (main plot) is the concentration of AB Mix nutrients consisting of two levels, namely 1000 ppm and 1500 ppm. Factor II (subplots) is the type of mustard green variety consisting of four levels, namely Shinta F1, SA 764 (Princess), Tosakan and CS1443 (Serena). The results showed that different varieties had a significant effect on the growth of mustard green plants in the parameters of plant height, number of leaves, root length and leaf area. Different nutrient concentrations significantly affect the growth and yield of mustard greens in the parameters of number of leaves, root length, crown wet weight, root wet weight, crown dry weight and root dry weight.Keywords: cultivation, internet of things, sensors, smart farming, nutrient
Potensi Streptomyces sp. Terhadap Penurunan Virulensi Bakteri Ralstonia solanacearum dalam Skala In vitro
Full text linkThe demand for chili peppers in Indonesia continues to increase, but in 2021 there was a decrease in chili production. One of the main causes is pathogen attack, especially Ralstonia solanacearum which causes bacterial wilt disease in chili plants. This study aims to evaluate the potential of Streptomyces sp. isolates BMP and TMP to reduce the virulence of R. solanacearum. The research was conducted through a series of laboratory experiments, including an inhibition test with double-layer method and virulence reduction test on Triphenyl Tetrazolium Chloride (TZC) media. The results showed that the TMP isolate was able to produce an inhibition zone of 1.5 cm2 while the BMP isolate showed no inhibition zone. In addition, this study also evaluated the virulence reduction of R. solanacearum due to the treatment of Streptomyces spp. The virulence reduction test showed that TMP isolates were able to reduce virulence by 70% while BMP isolates were able to reduce the virulence of R. solanacearum by 4%. These findings provide new insights into the development of R. solanacearum control strategies. In conclusion, isolates of Streptomyces sp. especially BMP showed potential in reducing the virulence of R. solanacearum, thus providing new hope in efforts to increase chili production sustainably
Pertumbuhan Bibit Kopi Liberika Tungkal Komposit pada Aplikasi Pupuk Kandang Ayam
Full text linkOne of the efforts to increase the growth of Liberica coffee of Tungkal composite seedlings is through organic fertilization as considered inorganic fertilizers replacement. The purpose of this study was to look for the best dose of chicken manure for the growth of Liberica coffee of Tungkal composite seedlings. This study used a randomized block design with 4 replications with one factor, namely chicken manure consisting of 7 treatment levels, namely 0, 50, 100, 150, 200, 250 and 300 g of chicken manure/polybag. The variables observed were increase in seedling height, increase in stem diameter, increase in number of leaves, leaf area, crown dry weight, and root dry weight. The results showed that the application of chicken manure was able to increase the increase in seedling height, increase in stem diameter, increase in the number of leaves, and crown dry weight of liberica coffee seedlings, but was not able to increase leaf area and root dry weight. The recommended dose of chicken manure to increase the growth of liberica coffee seedlings was 211 g of chicken manure/polybag
Penggunaan Kompos dan Metabolit Sekunder Trichoderma harzianum Terhadap Pertumbuhan dan Hasil Serta Intensitas Penyakit Hawar Daun Pada Tanaman Sawi
Full text linkThe cultivation of mustard greens (Brassica juncae L.) often experiences problems with low soil fertility and disease attacks. The preventative solution is to utilize natural materials which are waste and secondary metabolites from microorganisms. This research aims to obtain a type of compost and an effective method of application of secondary metabolites of T. harzianum to increase growth and yield and reduce the intensity of leaf blight disease in mustard plants. The treatments tried were compost types, namely sago palm compost, eucalyptus leaf compost, chicken livestock compost, and the secondary metabolite of T. harzianum, which was applied by pouring and spraying. The research used a Split Plot Design with three replications. Data analysis using Minitab 18 software. Effect interaction between the application of secondary metabolites using the spaying method and the type of compost on the growth and yield of mustard greens, as well as leaf blight disease, but each had an independent effect. The application of secondary metabolites of T. harzianum by using the spray method is equally good in increasing the number of leaves, fresh root weight, and harvest index, while to control leaf blight, the spray method is better. It can reduce the severity of the disease by 35.34%, while the application method is only able to reduce the severity of the disease by 35.34%. disease severity was 18.25%. The eucalyptus leaf compost and chicken livestock compost treatments were equally good in increasing the number of leaves, leaf area, plant height, fresh weight of the shoot, and fresh weight of the roots. Each type of compost can increase 18.73% and 25.89% leaf area, 12.36% and 12.36% plant height, 20.80% and 24.03% fresh shoot weight, and 11.77% and 13.12% fresh weight of roots.Keywords: biocontrol, compost, secondary metabolites, Trichoderma harzianum
Respon Unsur Hara Nitrogen Dan Besi Terhadap Sifat Fisiologis Dan Pertumbuhan Tanaman Terong (Solanum Melongena L.)
No full textEggplant (Solanum melongena L.) is a type of tropical plant which is included in the vegetable horticulture group where it is widely cultivated on land and in the yard. The high nutritional content of eggplant makes one of the reasons this commodity is in great demand by the public. So to get optimal results it is necessary to have a nutrient that must be met in the growth process. The presence of sufficient nutrients in the soil is one of the important factors in supporting plants to complete their life cycle, such as growing and producing optimally. Therefore, fertilization is an important activity in order to increase the presence of nutrients to avoid nutrient deficiencies that can have a negative impact on the resulting production, one of which is a decrease in production quality. Based on data from research results, nitrogen nutrients play a very important role in growth, and at the same time is a limiting element for eggplant growth, this is evidenced by the low growth indicators obtained in treatments that are not given nitrogen elements such as leaf growth, chlorophyll and dry weight produced
Pengaruh Nutrisi dan CaCl2 terhadap Pertumbuhan dan Hasil Tanaman Selada (Lactuca sativa L.) secara Hidroponik Sistem Wick
Full text linkThis study aimed to determine the effect of providing a combination of hydroponic nutrition and the addition of CaCl2 on the growth and yield of hydroponic lettuce (Lactuca sativa L.) with a wick system. The research was conducted at the Agricultural Instrument Standardization Center Banten Province and Lingkungan Sapiah, Panancangan, Cipocok Jaya, Serang City from April to June 2023. This study used a factorial Randomized Block Design (RBD) consisting of two factors. The first factor was a combination of nutrients with 3 levels, namely A1 (AB Mix 3 ml/l), A2 (AB Mix 1.5 ml/l + POC Nasa 3 ml/l), A3 (AB Mix 1.5 ml/l + Gandasil D 3 ml/l). The second factor was the concentration of CaCl2 with 2 levels, namely C1 (0 ppm) and C2 (650 ppm). The parameters observed were plant height, number of leaves, root length, stem diameter, plant wet weight, crown weight, weight loss, and stem hardness of lettuce. The results showed that the combination of AB Mix 3 ml/l + POC Nasa 3 ml/l gave he best effect on plant height 35 days after planting (DAP) (23.54 cm), number of leaves 35 DAP (7.81 leaves). The addition of CaCl2 concentrationof 650 ppm gave the best effect weight loss on 3 DAH (54.48%), 4 DAH (66.51%), 7 DAH (85.99%), and stem hardness on 0 DAH (0.96), 2 DAH (0.80), and 4 DAH (0.64). There was an interaction between the hydroponic nutrient combination treatment and the addition of CaCl2 on the parameters of plant height and number of leaves on 35 DAP
Keragaan dan Mutu Buah Cabai pada 2 Jenis lahan Ultisol di Kabupaten Bangka Barat
Full text linkCayenne pepper is a horticultural crop commodity. Cayenne pepper cultivation on ultisol land is an effort to utilize marginal land as an agricultural sector. Cayenne pepper development activities are carried out incorrectly to maintain the source of availability. The purpose of this study was to determine the morphology of the types of cayenne pepper on ultisol land in West Bangka Regency, to determine the quality and level of productivity of cayenne pepper types on ultisol land in West Bangka Regency and to determine the content contained in cayenne pepper. This research was conducted at 2 (two) locations for cayenne pepper cultivation in Kelapa Village and Tebing Village, Kelapa District, West Bangka Regency, Bangka Belitung Islands Province in February - April 2023. The results of the study on cayenne pepper of the Cakra variety had better morphology in character plant height, branch height, fruit length, leaf length, fruit diameter and leaf width. The production of cayenne pepper cultivation of the Cakra variety in Tebing Village yields 7 tonnes/ha. Cayenne pepper of the Bogor variety cultivated in Kelapa Village has a high vitamin C content of 13% and cayenne pepper of the Bogor variety cultivated at Tebing Village has a high Total Dissolved Solids of 5 brix.Keywords: Bogor, Cakra, Cayenne Pepper, Ultisol Land, West Bangk