Red cabbage can be consumed in its early growth stage or as microgreens due to its higher nutritional content than mature vegetables, thus attracting attention as a functional food. The use of LEDs (light-emitting diodes) is an alternative in indoor farming systems. Light intensity can be achieved through a power-based approach. Optimal blue light is able to efficiently form chlorophyll, assimilate carbon, and grow biomass. Microgreen nutrition can be improved through a selenium biofortification process. The study aims to increase the production and bioactive content of red cabbage microgreens with different blue LED power and selenium concentrations. The study was conducted from October to November 2024 at the Physiology and Plant Breeding Laboratory, Faculty of Animal Husbandry and Agriculture, and the Chemical Engineering Laboratory, Faculty of Engineering, Diponegoro University. The study used a split plot design with 3 main plot levels and 4 subplot levels based on a completely randomized design with 3 replications. The main plot was blue LED power of 12, 15, and 18 watts, while the subplots of selenium concentration treatments consisted of 0, 20, 40, and 60 µM, resulting in 36 experimental units. The results showed that the 18-watt blue LED power treatment was effective for increasing the fresh weight of the shoot and water content. Selenium biofortification treatment with a concentration of 20 µM was effective in increasing carotenoid levels. The 18-watt blue LED power combined with a selenium concentration of 40 µM can increase the highest total anthocyanin content.
Agricultural land on the northwest slope of Mount Lawu, Karanganyar District, is developed on land with a very steep slope and has the potential of increasing erosion in the surrounding area. This research aimed to determine: (1) the level of erosion hazard, (2) the allowable amount of erosion, and (3) the direction of land conservation. This research is quantitative research with a descriptive approach. The research data then analyzed descriptively based on the results of calculations using the USLE model. From this study, the researcher found several results. These results namely: (1) The level of erosion-hazard from the samples consisted of moderate (sample point I, VI), and very severe (sample point II, III, IV, V). The level of erosion hazard in the research area using geographic information system analysis is dominated by moderate (62.18%) and very severe levels (32.04%); (2) The amount of erosion allowed at the six sample points ranges from 13.00-18.08 tons/ha/yr. These six-sample points also have the potential for higher erosion rates than allowed. Therefore, land conservation instructions need to be given. (3) The instructions for the six sample points may apply vegetative methods (by changing ground cover vegetation) and mechanical methods (by changing land management).
This study aims to evaluate the morphological characteristics and phytochemical content of the purple phenotype of G. globosa growing in two different locations: Denbantas Vilage (Tabanan Regency) and Kesiman Kertalangu Vilage (Denpasar City). Samples were collected using purposive sampling, while morphological analysis was based on Tjitrosoepomo's (2013) description. Compound analysis was conducted using gas chromatography-mass spectrometry (GC-MS). Morphologically, although the flower and leaf structures are similar, notable differences were found in stem color and leaf surface texture. Phytochemical analysis revealed that the Denbantas sample contained a dominance of saturated fatty acids such as n-Hexadecanoic acid, Hexadecanoic acid ethyl ester, and Tetradecanoic acid ethyl ester, which are known to have antibacterial, anti-inflammatory, and antioxidant activities. The detection of Butylated Hydroxytoluene (BHT), a synthetic antioxidant, indicated potential protection against lipid peroxidation. Conversely, Kesiman Kertalangu samples contain volatile and phenolic compounds such as acetic acid, 2-Methoxy-4-vinylphenol, as well as heterocyclic compounds such as 2-Ethylacridine and Indolizine, which function as antitumor and antimicrobial agents. The presence of toxic compounds such as arsenous acid and tris(trimethylsilyl) ester indicates potential heavy metal contamination from the environment. These variations chemical polymorphism influenced by genetic, geographical, and ecological factors. findings the potential of G. globosa as a source of natural bioactive compounds and cosmetics; however, further studies are needed on toxicological safety and the environmental impact on the accumulation of secondary metabolites.
This study aims to analyze soil quality in several land uses using two different methods, namely Lal (1994) and Bajracharya (2006) in secondary forests, oil palm plantations, and open land. The research was conducted for 4 months, including soil sampling in Lumut Village, Toba Sub-district, Sanggau Regency, and laboratory analysis. Determination of soil sampling points using purposive sampling method. Each land use has 8 observation points of intact and disturbed soil sampling at a depth of 0-20 cm representing secondary forest (455,15 ha), oil palm plantation (516,44 ha) and open land (37,73 ha). The results of the soil quality index assessment using the Lal (1994) method in secondary forests, oil palm plantations and open land are in poor criteria with soil quality index values of 36, 34 and 32, respectively. In contrast to the soil quality index assessment using the Bajracharya (2006) method in secondary forests, oil palm plantations and open land all have good criteria with quality index values of 0,76, 0,76 and 0,74. Differences in soil quality classes can occur because the limiting factors and weights in each method are different.
Nutmeg (Myristica fragrans Houtt) is one of Indonesia's leading spice commodities with high economic and export value. However, its productivity has declined significantly due to stem canker disease. The study aimed to characterize the morphology of Phytophthora sp and evaluate the effectiveness of activated charcoal from coconut, pine, and walnut shells in suppressing stem cancer disease. Surveys were conducted in several nutmeg centers on Ambon Island. The evaluation of activated charcoal effectiveness was carried out in situ and in vitro. The results showed that coconut shell charcoal was more effective than pine and walnut charcoal. The results also showed that the Phytophthora sp species found was a new subspecies and morphologically different from the previously known Phytophthora sp. It is hoped that the results of this study will contribute significantly to the environmentally friendly management of nutmeg stem cancer and support the increase in productivity of smallholder plantations.
Kedelai (Glycine max (L.) Merr.) merupakan komoditas penting dalam mendukung ketahananpangan nasional. Namun, produktivitasnya di Indonesia, khususnya di lahan ultisol SulawesiTenggara, masih rendah akibat kesuburan tanah yang terbatas dan infeksi penyakit pustulbakteri yang disebabkan oleh Xanthomonas axonopodis pv. glycines. Penelitian ini bertujuanuntuk mengetahui efektivitas kombinasi pupuk hayati Biofresh plus dan dosis pupukanorganik NPK dalam menekan intensitas penyakit pustul bakteri pada beberapa varietaskedelai ditanah ultisol. Penelitian menerapkan rancangan split plot dalam RAK, yang terdiriatas 16 kombinasi perlakuan dan diulang sebanyak tiga kali. Variabel yang diukur meliputikeparahan penyakit, nilai luas di bawah kurva perkembangan penyakit (AUDPC), serta tingkatefektivitas pengendalian penyakit. Hasil penelitian menunjukkan bahwa Varietas Dena-1 (F4)paling tahan terhadap pustul bakteri, dengan AUDPC terendah (247,80%-hari) dan keparahanpenyakit terendah di semua tahap. Kombinasi Biofresh plus dengan atau tanpa NPK rendah(25–50%), lebih efektif menekan penyakit dibanding pupuk anorganik penuh, denganefektivitas tertinggi 32,91% (F1R2) Efektivitas pengendalian sangat bergantung padakombinasi varietas dan pupuk, di mana F4 paling efektif dengan R1, F1 dengan R2, dan F3dengan R3.
As one of the important crops in Indonesia, the production of sweet potato remains below optimallevels across many fields, which can be attributed to insufficient soil fertility. Soil properties canbe improved through biochar and eco-enzyme derived from organic waste, supporting cropgrowth and yield. The study aimed to evaluate the effects of rice husk biochar and eco-enzyme onthe growth and yield components of sweet potato. The experiment was conducted from December2023 to March 2024 at the Experimental Garden in the Faculty of Agriculture, UniversitasMalikussaleh, using a randomized block design with 2 factors: biochar (0, 5, and 10 tons ha-1)and eco-enzyme (0, 22.5, and 30 ml) with 3 replications. The parameters measured included tuber length, tuber number and diameter, primary branch number, chlorophyll content, tuber freshweight (per plant and per tuber), and organoleptic attributes (e.g., taste, color, texture). Biocharapplication at 5-10 tons ha-1 significantly increased tuber number and fresh weight per tubercompared with the control. Eco-enzyme at 22.5-30 ml mainly improved primary branch numberand increased tuber fresh weight and organoleptic scores. Many parameters were notsignificantly affected, suggesting that under the relatively low amendment rates andsingle‑season application used, biochar and eco‑enzyme provide only moderate improvements in sweet potato performance.
Tanaman krisan pot merupakan komoditas hortikultura bernilai ekonomi tinggi yang digemari konsumen karena bentuk tanaman yang kompak dan keindahan bunganya. Penelitian ini bertujuan untuk mendapatkan kombinasi media tanam dan konsentrasi pupuk NPK yang sesuai untuk mendorong pertumbuhan dan perkembangan tanaman krisan pot. Penelitian dilaksanakan pada Juni–September 2022 di Teaching Factory Dataran Tinggi Politeknik Negeri Jember menggunakan Rancangan Acak Kelompok (RAK) faktorial dua faktor. Faktor pertama adalah kombinasi media tanam yang terdiri atas enam taraf, yaitu kombinasi cocopeat, arang sekam, kompos, dan pasir dengan perbandingan 2:1:1, sedangkan faktor kedua terdiri atas tiga taraf konsentrasi pupuk NPK (150 ppm, 200 ppm, dan 250 ppm). Terdapat 18 kombinasi perlakuan yang diulang tiga kali sehingga diperoleh 54 unit percobaan. Setiap unit percobaan terdiri atas dua pot sebagai subsampel sehingga total pot yang digunakan sebanyak 108 pot. Hasil penelitian menunjukkan bahwa interaksi kombinasi media tanam dan konsentrasi pupuk NPK berpengaruh nyata terhadap diameter batang dan diameter tajuk tanaman krisan pot. Kombinasi media kompos:cocopeat:pasir 2:1:1 dengan konsentrasi NPK 250 ppm menghasilkan diameter batang tertinggi, sedangkan diameter tajuk tertinggi diperoleh pada kombinasi arang sekam:kompos:pasir 2:1:1 dengan konsentrasi NPK 250 ppm. Secara umum, konsentrasi pupuk NPK 250 ppm menunjukkan kecenderungan menghasilkan pertumbuhan dan perkembangan tanaman yang lebih baik dibandingkan konsentrasi yang lebih rendah. Penelitian lanjutan disarankan untuk mengevaluasi konsentrasi pupuk di sekitar 250 ppm guna memperoleh dosis optimum yang lebih presisi, serta mengukur parameter kualitas bunga dan karakter fisik-kimia media tanam agar rekomendasi budidaya krisan pot lebih aplikatif dan berkelanjutan.
Ubi jalar (Ipomoea batatas L.) merupakan salah satu komoditas pangan penting yangproduktivitasnya dapat ditingkatkan melalui penggunaan pupuk organik dan penerapanteknik penanaman yang tepat. Di Kabupaten Maros, petani secara turun-temurunmenerapkan model simpul pada pangkal stek sebelum ditanam, namun efektivitas tekniktersebut belum banyak dikaji secara ilmiah. Penelitian ini bertujuan mengevaluasi pengaruhberbagai jenis pupuk kandang dan model simpul stek terhadap pertumbuhan dan hasil ubijalar. Penelitian dilaksanakan di Desa Rompegading, Kecamatan Cenrana, Kabupaten Maros, Sulawesi Selatan, pada April–Desember 2023 menggunakan Rancangan Acak Kelompok(RAK) faktorial dengan dua faktor. Faktor pertama terdiri atas tanpa pupuk kandang, pupukkandang sapi, kambing, dan itik, sedangkan faktor kedua meliputi model simpul stek berbentuk angka 8, huruf Q, dan huruf J. Parameter yang diamati meliputi panjang cabang, jumlah daun, bobot tajuk per tanaman, jumlah umbi per tanaman, dan bobot umbi per tanaman. Hasil penelitian menunjukkan bahwa jenis pupuk kandang maupun model simpul stek tidak berpengaruh nyata terhadap seluruh parameter pengamatan. Meskipun demikian, kombinasi pupuk kandang kambing dan model simpul stek huruf Q menghasilkan nilai rata-rata tertinggi pada seluruh parameter pertumbuhan dan hasil, dengan bobot umbi mencapai1,90 kg tanaman⁻¹ atau setara dengan produktivitas sekitar 47,5 t ha⁻¹. Kombinasi perlakuan tersebut berpotensi diterapkan sebagai teknologi budidaya ubi jalar berbasis kearifan lokal.
Penyakit hawar daun bakteri yang disebabkan oleh Xanthomonas oryzae merupakan penyakit penting pada tanaman padi yang dapat menyebabkan kehilangan hasil hingga 70-80%. Aplikasi bakteri endofit Bacillus sp. merupakan salah satu upaya pengendalian yang dapat menekan perkembangan Xanthomonas oryzae. Penelitian ini bertujuan untuk mengetahui kemampuan bakteri endofit Bacillus sp. isolat Bth-22 dan Bth-31a sebagai agensia pengendali penyakit hawar daun bakteri Xanthomonas oryzae. Penelitian ini menggunakan Rancangan Acak Lengkap Faktorial dengan 8 perlakuan dan 3 ulangan. Faktor pertama adalah isolat bakteri yaitu : (B1) = Bacillus Bth-22 dan (B2) = Bacillus Bth-31a, sedangkan faktor kedua adalah dosis aplikasi Bacillus sp., yaitu : (DI) = dosis 10 ml/tanaman, (D2) = dosis 15 ml/tanaman, (D3)= dosis 20 ml/tanaman, (D4) = dosis 25 ml/tanaman. Analisi data menggunakan sidik ragam yang dilanjutkan dengan DMRT 5%. Hasil penelitian menunjukkan bahwa perlakuan Bacillus sp. isolat Bth-22 dengan dosis 20 ml/tanaman dapat memperpanjang masa inkubasi selama 7,7 HSI dan memiliki intensitas penyakit terendah yaitu 23,5%.
Based on data from the Central Statistics Agency (BPS) in 2024, in the last three years there have been 62 floods in East Aceh Regency, Langsa City, and Aceh Tamiang Regency, with details of 29 incidents in East Aceh, 13 incidents in Langsa City, and 20 incidents in Aceh Tamiang. The high frequency of flooding indicates the need for hydrological studies in the Krueng Bayeun, Krueng Langsa, and Krueng Tamiang River Basins (DAS). This study aims to analyze watershed boundaries, topographic characteristics, and the shape and pattern of river flow direction using a Geographic Information System (GIS) based on Digital Elevation Model (DEM) data. The study was conducted using a quantitative descriptive survey method through remote sensing analysis. The results of the Spatial Analyst Hydrology analysis show that the watershed area is depicted in the form of a polygon as the main watershed area. The roundness ratio values of the Krueng Bayeun, Krueng Langsa, and Krueng Tamiang watersheds are 0.23; 0.30; and 0.34, respectively, indicating that the three watersheds are elongated. Water flow is focused toward low-lying areas, potentially increasing water accumulation and the risk of flooding, especially during the rainy season. All three watersheds are dominated by dendritic drainage patterns with moderate river density, indicating sufficient water reserves. The Krueng Bayeun and Krueng Langsa watersheds are dominated by flat to gentle slopes, resulting in slower river flow and longer retention of standing water. Meanwhile, the Krueng Tamiang watershed is dominated by steep to very steep slopes, accelerating flow, increasing erosion, and potentially causing flooding in downstream areas.
Ectomycorrhizal fungi form mutualistic associations with forest tree roots and play an important role in nutrient and water uptake as well as plant tolerance to environmental stress. This study aimed to identify the species composition of ectomycorrhizal fungi and evaluate their diversity, dominance, and evenness in Klamono Nature Park, Sorong Regency, Southwest Papua. Sampling was conducted using a purposive sampling method with ten 20 × 20 m plots. Species were identified based on the macroscopic morphology of their fruiting bodies. Community structure was analyzed using the diversity index (H'), dominance index (C), and evenness index (E). A total of 10 species comprising 205 individuals were recorded. Boletus sp1 was the most abundant species (19.02%), whereas Amanita phalloides was the least abundant (5.37%). The values of H' (0.954), C (0.12), and E (0.916) indicated low diversity, low dominance, and high evenness, respectively. These findings provide baseline information for biodiversity conservation and forest management in Southwest Papua.
The expansion of upland rice cultivation into suboptimal lands, particularly Ultisols, represents a strategic approach to increasing national rice production. However, low soil fertility, acidic pH, and limited nutrient availability constrain productivity in such environments. This study aimed to evaluate the effectiveness of Arbuscular Mycorrhizal Fungi (AMF) and compost application in improving the growth and yield of upland rice (Inpago 12) cultivated on Ultisol soils in Deli Serdang and Langkat, North Sumatra. A factorial randomized block design with three factors, AMF dosage (0–600 spores), compost rate (0–5 t ha⁻¹), and location that was implemented with three replications (150 experimental units). Soil analysis confirmed acidic conditions with low nutrient status typical of Ultisols. Five AMF taxa were identified with root colonization ranging from moderate to very high (46.67–100%). ANOVA results revealed that location significantly affected most growth and yield parameters, whereas AMF and compost treatments showed limited statistical effects. The most effective treatment combination was 450 spores with 2 t ha⁻¹ compost in Deli Serdang, which improved tiller number, biomass, and panicle production. These findings indicate that the effectiveness of AMF and compost application in Ultisols is highly site-specific and influenced by local soil characteristics.
Experimental study on the Mycosphaerella species complex was often limited by the availability of the isolates due to problems in the isolation process. Two symptomatic leaves from initial and later infections were used as the source of isolates. As critical environmental factors for fungal development, we observe different pH (5.5, 6.0 6.5, and 7.0) and antibiotics (chloramphenicol and amoxicillin) that are suitable to give less-contamination growing resources for Mycosphaerella. Subsequently, we analyze the three different media, i.e. potato dextrose agar, oatmeal agar, and V8 juice agar for the optimal growth of Mycosphaerella under varied photoperiod for incubation (12/12 light/dark cycle and 24-h dark) using the selected pH and antibiotics. This research was conducted in an ambient laboratory setting utilizing a complete randomized factorial design with ANOVA and Tukey test. The subculturing stage of Mycosphaerella was shown to be most successful at pH 6.0 with amoxicillin from a young infected leaf with first signs (brown streak without halo). This fungus preferred oatmeal agar with 24-hour dark incubation to achieve the highest mycelial growth (1.6 mm/day) and conidial production (3.3 x 104 conidia ml-1). This could be an essential approach employed by researchers to provide a sufficient quantity of Mycosphaerella propagules in vitro, in vivo, and ad planta trials for Sigatoka disease management.
This study was designed to examine the growth responses and yield performance of three rice varieties under different dosage levels of the organic fertilizer Superbokashi MA-11. The experiment utilized a two-factor factorial Randomized Block Design (RBD). The first factor consisted of rice varieties, namely Ciherang (V1), Situ Bagendit (V2), and Inpari 13 (V3), while the second factor was the level of organic fertilizer dosage Superbokashi MA-11, including 0 tons ha⁻¹ (P0), 8 tons ha⁻¹ (P1), and 16 tons ha⁻¹ (P2). A significant interaction between variety and fertilizer dosage was observed only for the number of productive tillers, with Inpari 13 reaching its optimum at 8 tons ha⁻¹, averaging 22.67 tillers. In contrast, no significant interaction was observed in plant height, number of filled grains, 1000-grain weight, or harvested grain yield. Individually, Inpari 13 demonstrated the best performance with a production yield of 5.87 tons ha⁻¹, which was statistically comparable to Situ Bagendit (5.53 tons ha⁻¹), but significantly higher than Ciherang (4.86 tons ha⁻¹). Increasing the fertilizer dosage up to 16 tons ha⁻¹ was proven to enhance the 1000-grain weight to 27.44 g and produce the highest grain yield of 6.11 tons ha⁻¹. This study concludes that integrating the Inpari 13 or Situ Bagendit varieties with the application of Superbokashi MA-11 at a dosage of 16 tons ha⁻¹ is a strategic approach to improve rice productivity.
Water availability in humid regions is often considered abundant due to high rainfall. However, uneven water distribution can lead to water shortages, especially when meeting domestic and agricultural demands. This study aims to analyze the level of water scarcity in South Sinjai District. The data included rainfall, soil characteristics, population numbers, and domestic and agricultural water demands. Water availability and its scarcity were analyzed using the water balance and Water Scarcity Index (WSI) approach. The study showed that the four villages studied experienced water availability and demand variations. Aska and Talle villages have higher water availability than Palae and Bulukamase villages. However, the increased water demand due to intensive planting patterns and population growth has caused some villages to be near critical to very critical. If a two- to three-season planting pattern is applied without good water resource management, the WSI can exceed 100%, signaling a very critical condition. Therefore, more efficient water management strategies are needed, including optimizing irrigation infrastructure, using water storage technologies, and implementing climate-based adaptive policies to reduce pressure on water resources.
Keragaman topografi merupakan salah satu faktor penting yang mempengaruhi sifat fisika dan kimia tanah sawah tadah hujan dan hal ini sangat mempengaruhi kesuburan tanah. Oleh karena itu telah dilakukan suatu penelitian untuk mengevaluasi pengaruh topografi terhadap beberapa karakteristik tanah sawah tadah hujan di Sindang Kasih, Kabupaten Konawe Selatan. Survei lapangan dilakukan pada lahan sawah tadah hujan seluas 150 ha yang titik sampelnya ditentukan secara purposif. Pengambilan sampel tanah dibagi menjadi 3 kategori berdasarkan ketinggian tempat: lahan atas, tengah dan bawah, dengan ketinggian masing-masing 88, 79 dan 66 meter di atas permukaan laut. Pada setiap ketinggian, diambil 3 titik sampel yang terdiri dari 4 subsampel kemudian dikompositkan menjadi 9 sampel. Hasil penelitian menunjukkan bahwa ketinggian tempat memberikan pengaruh yang relatif sama terhadap kelas tekstur tanah (liat), pH tanah dan K-total tanah, namun kadar C-organik, P total, KTK dan KB meningkat secara signifikan dengan semakin menurunnya ketinggian tempat. Diamati hubungan yang kuat antara kadar C-organik dengan KTK tanah (r=0,88), serta pH dengan KTK tanah (r=0,80). Hasil evaluasi menyimpulkan bahwa terjadi penurunan kesuburan tanah seiring dengan bertambahnya ketinggian, sehingga diperlukan pertimbangan khusus untuk memulihkan kesuburan tanah pada lahan atas dan tengah.
Mentimun memiliki potensi menghasilkan bunga dan buah cukup banyak, akibatnya banyak bunga dan buah yang gugur. Untuk membantu penyerbukan perlu ditanam refugia dari jenis Zinnia di sekitar tanaman mentimun. Penelitian ini bertujuan untuk mengevaluasi potensi Zinnia sebagai tanaman yang dapat menarik serangga yang dikombinasikan dengan pengurangan bunga betina sebagai upaya untuk meningkatkan pertumbuhan dan produksi mentimun. Penelitian ini menggunakan Rancangan Petak Terbagi dengan kontrol. Sebagai petak utama adalah tanaman Zinnia dan pengurangan bunga sebagai anak petak. Petak percobaan diulang 3 kali, setiap kombinasi perlakuan terdapat 3 tanaman sampel. Petak utama terdiri dari 2 level yaitu tanpa penanaman Zinnia (R0) dan dengan penanaman Zinnia(R1). Anak petak adalah pengurangan bunga betina mentimun terdiri dari 5 taraf yaitu: B0 = Kontrol (tanpa pengurangan bunga); B1 = Pengurangan bunga betina selain pada ruas 5, 6 dan 7; B2 = Pengurangan bunga betina selain pada ruas 6, 7 dan 8; B3 = Pengurangan bunga betina selain pada ruas 7, 8 dan 9; B4 = Pengurangan bunga betina selain pada ruas 8, 9 dan 10; dan B5 = Pengurangan bunga betina selain pada ruas 9, 10 dan 11. Hasil penelitian menunjukkan bahwa penanaman bunga Zinnia yang dikombinasikan dengan pengurangan bunga betina dengan mempertahankan bunga betina pada ruas ke 5 – 9 mampu meningkatkan pertumbuhan dan hasil mentimun.
Fosfor (P) merupakan salah satu unsur hara esensial yang ketersediaannya dapat ditingkatkan melalui penambahan kompos dan Trichoderma sp. Penelitian ini bertujuan untuk mengetahui kompos dan Trichoderma sp. pada peningkatan unsur P pada jenis tanah Alfisol, Inceptisol, dan Vertisol. Penelitian dilaksanakan menggunakan Rancangan Acak Lengkap (RAL) dengan 2 faktor. Faktor pertama yaitu dosis kompos dengan empat taraf 0 ton ha-1 atau tanpa kompos, 10 ton ha-1, 20 ton ha-1, dan 30 ton ha-1. Faktor kedua yaitu konsentrasi Trichoderma sp. dengan empat taraf , 0 CFU ml-1, 106 CFU ml-1, 108 CFU ml-1, dan 1010 CFU ml-1. Kompos dan Trichoderma sp. mampu meningkatkan kandungan P tersedia masing-masing jenis tanah.
Meningkatnya kesejahteraan hidup masyarakat memerlukan kualitas sayur dengan kandungan gizi yang lebih tinggi yaitu mengandung lebih banyak antioksidan, vitamin, dan mineral. Pemanfaatan cahaya buatan seperti spektrum merah dan biru dapat meningkatkan kandungan gizi sayuran pada selada keriting maupun tanaman lainnya. Tanaman muda mengandung gizi lebih baik dibanding tanaman dewasa, oleh karena itu perlu diteliti perlakuan kombinasi kedua faktor tersebut. Tujuan penelitian ini adalah mengkaji pengaruh cahaya LED dan umur panen terhadap kandungan klorofil, vitamin C, dan antioksidan selada keriting di plant factory. Penelitian ini menggunakan Rancangan Acak Lengkap faktorial dengan dua faktor, yaitu faktor I adalah empat taraf cahaya LED yaitu P (putih), M (merah), B (biru), dan MB (merah-biru) dan faktor II adalah umur panen yaitu U 14 (14 hst) dan U 40 (40 hst). Semua perlakuan diulang empat kali. Warna cahaya merah-biru dan umur panen 40 hst berinteraksi secara signifikan dan memberikan jumlah klorofil tertinggi di antara semua perlakuan yaitu sebesar 29,38 SPAD. Kombinasi perlakuan cahaya biru dan umur panen 40 hst memberikan daya antioksidan terbesar yaitu 94,88 mg/g dan kandungan vitamin C tertinggi yaitu 168,10 mg/g pada selada keriting.
