56 research outputs found
Increasing Growth and Production of Pagoda Mustard (Brassica narinosa) by Giving Coconut Shell Biochar and Jakaba LOF : Mela Anggraini*, Hilwa Walida, Kamsia Dorliana Sitanggang, Badrul Ainy Dalimunthe
No full textPagoda mustard greens (Brassica narinosa) are mustard greens characterized by their unique leaf shape, which resembles a pagoda with a crunchy texture and a slightly sweet flavor. This study aims to evaluate the effectiveness of combining coconut shell biochar and Jakaba in enhancing soil fertility, nutrient availability, and the growth and yield of pagoda mustard greens. This study used a factorial randomized block design (RBD). The first factor is the addition of Biochar planting media with 4 levels, namely: 0 g/polybag (Control), 100 g/polybag, 250 g/polybag, 500 g/polybag. The second factor is LOF Jakaba with 4 levels, namely: 0 ml/polybag, 50 ml/polybag, 100 ml/polybag, 200 ml/polybag. and used Duncan’s Multiple Range Test (DMRT) analysis. The results showed that the provision of coconut shell biochar and Jakaba significantly affected plant height, fresh weight, and dry root weight of pagoda mustard greens, with the P3A3 treatment showing the best results. In contrast, the number of leaves did not show any significant difference between treatments, which was likely influenced by other factors such as environmental conditions and plant genetics. Using biochar and Jakaba can increase plant growth and development by improving nutrient availability, soil aeration, and the activity of microorganisms that support nutrient absorption
Isolasi Bakteri Keratinolitik dari Limbah Bulu Ayam dan Karakterisasi Enzim Keratinasenya
No full textA study on isolation of keratinolytic bacteria from feather waste and characterization
of its keratinase has been done. Isolation was conducted on Skim Milk Agar and
Feather Meal Agar incubated at 31 oC and pH 7. Index keratinolytic was measured
on Feather Meal Agar. Crude enzyme presipitation was performed by addition the
concentration series of ammonium sulfate followed by dialysis. The influences of pH
and temperature to keratinase activity were studied to examine the characteristics of
each enzyme. Nineteen bacteria with different morphological characteristics were
isolated from feather waste. Three isolates, A4, B4, and B6, were chosen for futher
studied based on their keratinolitic index. The highest production of keratinase of A4
isolate was shown on 6 th day, B4 isolate was on 4 th day, and B6 isolate was on 5 th
day. The maximum keratinase activity was produced by A4 isolate at 20% ammonium
sulfate of 95.9 U/ml, B4 and B6 isolates produced it at 70% ammonium sulfate of
57.5 U/ml and 71.2 U/ml respectively. The specific activity after dialysis were 4.61
U/mg for A4 isolate, 3.13 U/mg for B4 isolate, and 4.08 U/mg for B6 isolate. The
optimum of keratinase A4 isolate was at pH 8 and 45 oC, B4 isolate was at pH 7 and
35 °C, and B6 isolate was at pH 7 and 40 °C. Identification based on 16S rRNA gene
showed that A4, B4 and B6 isolates closed to Leclercia adecarboxylata strain MX17B
with similarity of 97%, Azotobacter chroococcum strain ABA-1 with similarity
of 85%, and Stenotrophomonas maltophilia strain BIW with similarity of 96%,
respectively.Penelitian mengenai isolasi bakteri keratinolitik dari limbah bulu ayam dan
karakterisasi enzim keratinasenya telah dilaksanakan. Isolasi dilakukan menggunakan
medium Skim Milk Agar dan Feather Meal Agar yang diinkubasi pada suhu 31 oC
dan pH 7. Uji indeks keratinolitik dilakukan di medium Feather Meal Agar.
Presipitasi enzim kasar dilakukan dengan penambahan amonium sulfat secara
bertingkat dan dialisis. Pengaruh pH dan suhu terhadap aktivitas keratinase dilakukan
untuk mengetahui karakteristik masing-masing enzim. Sembilan belas isolat dengan
karakteristik morfologi yang berbeda diperoleh dari hasil isolasi. Tiga isolat yaitu A4,
B4, dan B6 dipilih untuk pengujian lanjut berdasarkan indeks keratinolitik. Aktivitas
tertinggi diperoleh keratinase isolat A4 pada konsentrasi amonium sulfat 20% yaitu
sebesar 95,9 U/ml, dan keratinase isolat B4 dan B6 pada konsentrasi amonium sulfat
70%, berturut-turut sebesar 57,5 U/ml dan 71,2 U/ml. Aktivitas spesifik keratinase
setelah dialisis isolat A4 yaitu sebesar 4,61 U/mg, isolat B4 sebesar 3,13 U/mg, dan
isolat B6 sebesar 4,08 U/mg. Aktivitas keratinase isolat A4 optimum pada pH 8 dan
suhu 45 oC, keratinase isolat B4 optimum pada pH 7 dan suhu 35 oC, dan keratinase
isolat B6 optimum pada pH 7 dan suhu 40 oC. Identifikasi berdasarkan gen 16S
rRNA menunjukkan bahwa isolat A4, B4 dan B6 berturut-turut mendekati Leclercia
adecarboxylata strain M-X17B dengan homologi 97%, Azotobacter chroococcum
strain ABA-1 dengan homologi 85%, dan Stenotrophomonas maltophilia strain BIW
dengan homologi 96%.61 HalamanTesis Magiste
Review of Ossama, Bahaa Ed-Din (2015), Kilma Hilwa: Egyptian Colloquial Arabic through Songs. Intermediate Level
No full textThe book "Kilma Hilwa: Egyptian Colloquial Arabic through Songs. Intermediate Level" is an anthology and textbook of Egyptian songs that allows users to explore the realm of Egyptian music, cinema and culture. The author, who teaches Arabic to foreign learners in Cairo, affirms in his introduction that songs are not only didactic tools: “they are more thanthis, they are the receptacle of a culture, people’s thoughtsand are comparable to poetry and prose”
Fertilidade de Argissolos e características morfológicas de bactérias fixadoras de nitrogênio da rizosfera de dendezeiro
No full textExploratory studies on microorganisms from the oil palm rhizosphere can be used to increase the nitrogen availability in acidic soils. The present study aimed to determine the soil nutrients and obtain the relationship among the soil chemical characteristics, as well as the morphological and microscopic characteristics of N-fixing bacteria isolates, in Ultisols from the oil palm rhizosphere. The Ultisols fertility was classified as very low to moderate. In addition, the increasing soil pH toward neutral increased the cation exchange capacity, exchangeable cations (Ca2+, K+ and Mg2+), total N, organic C and available P. Nitrogen-fixing bacteria isolates with varied shapes (circular, concentric, irregular and diffuse) and edges (wavy, slippery and irregular) were found, and the dominant type of isolate presented raised elevation. Four types of isolate had a white color and only one a clear color. Three Gram-positive and two Gram-negative bacteria isolates showed a bacillus shape.
KEYWORDS: Elaeis guineensis, soil microorganisms, Gram-positive and Gram-negative bacteria.Estudos exploratórios de micro-organismos da rizosfera de dendezeiro podem ser utilizados para aumentar a disponibilidade de nitrogênio em solos ácidos. Objetivou-se determinar os nutrientes e obter a relação entre as características químicas do solo, bem como as características morfológicas e microscópicas de isolados de bactérias fixadoras de N, em Argissolos da rizosfera de dendezeiro. A fertilidade dos Argissolos foi classificada de muito baixa a moderada. Além disso, o aumento do pH do solo rumo ao neutro aumentou a capacidade de troca catiônica, cátions trocáveis (Ca2+, K+ e Mg2+), N total, C orgânico e P disponível. Foram encontrados isolados de bactérias fixadoras de N com formas (circular, concêntrica, irregular e difusa) e bordas (ondulada, escorregadia e irregular) variadas, e o tipo dominante de isolado apresentou elevação aumentada. Quatro tipos de isolado mostraram cor branca e somente um cor clara. Três isolados de bactéria Gram-positiva e dois de Gram-negativa apresentaram formato de bacilo.
PALAVRAS-CHAVE: Elaeis guineensis, micro-organismos do solo, bactérias Gram-positivas e Gram-negativas
ANALISIS KARAKTERISTIK SIFAT KIMIA TANAH GAMBUT SETELAH DIINKUBASI DENGAN KASCING DARI CAMPURAN KOTORAN AYAM, BONGGOL PISANG DAN AMPAS TAHU
No full textPeat soil has a high cation exchange capacity, low base saturation, has a low content of K, Ca, Mg, P and also has a low content of micro elements (such as Cu, Zn, Mn and B). This study aims to determine the chemical properties of peat soil that has been incubated with vermicompost fertilizer from a mixture of banana weevil, chicken manure and tofu dregs. The test was carried out by mixing peat soil and vermicompost according to the treatment in 2 kg polybags. After thoroughly stirring, the mixture was sprinkled with peat water once a day until it reached field capacity. The mixture was then incubated for 2 weeks. Each treatment was repeated 3 times. This study was conducted with a non-factorial randomized design as follows: PO = Control (1 kg of peat soil), P1 = 1 kg of peat + 500 grams of vermicompost, P2 = 1 kg of peat soil + 1 kg of vermicompost and Based on the results of the research analysis can be taken the conclusion that peat soil incubated for two weeks increased the chemical properties of the soil, namely: improving pH by P1 0.15 units and P2 by 0.175 units, total N by 0.43% and P2 by 0.755 %, P by P1 733.52 and P2 was 922,015, K was 2,145 and P2 was 2,575, Ca was 1,675 and P2 was 2,825, Mg was P1 3 and P2 was 4,27 and increased Na by 0,09 and P2 by 0,045
The Effectiveness of The Inhibition of Local Bacterial Isolate From The Rhizosphere of Oil Palm Plant on Leaf Spot Disease in Purple Eggplant (Solanum melongena L.)
No full textLongterm use of pesticides can cause side effects on the environment and human health. PGPR is an environmentally friendly solution for biological control of leaf spot disease. This research aims to obtain bacterial isolates from the rhizosphere of oil palm plants which have the potential as biological agents to control fungal leaf spot diseases in eggplant plants. The research was carried out using 10 treatments, namely giving 9 samples of different bacterial isolates and 1 control and repeated 2 times, bringing the total to 20 plant samples. The results showed that there were 4 bacterial isolates from the rhizosphere of oil palm plants that had great potential to inhibit the growth of leaf spot fungi, namely isolate R5 (99.35%), isolate R2 (98.1%), isolate R6 (94.69%) and isolate R10 (94.29%). The bacterial isolates that were able to reduce the percentage of disease attacks compared to the first week of observation to the fourth week were isolates R4, R2 and R10, with a reduction in the percentage of disease attacks respectively of 15.15%, 7.14% and 1.98%. Based on the data, it can be seen that the R2 bacterial isolate is an isolate that has the potential to inhibit fungal isolates and reduce the percentage of leaf spot disease attacks on eggplant plants
Budidaya Tanaman Sayuran Di Kelompok Karang Taruna Tani Pasir Mas Dengan Pemanfaatan Teknologi Sonic Bloom
No full textVertical farming technique is a method used for community settlements that have narrow land optimally. This technique will arrange plants in tiers from top to bottom with various types of plants. The purpose of this community service (PKM) is to help improve the understanding and ability of the Karang Taruna Tani Villa Pasir Mas group partners to grow vegetables so that they can meet their daily vegetable needs and reduce living costs by utilizing existing land using sonic bloom technology. The community service partners trained in this service are 25 partners aged 30-50 years. The methods used are socialization, training and mentoring. The results achieved are an increase in Partners' understanding of sonic bloom technology to 80%, Partner knowledge 98% and Partners' desire to cultivate vegetables with sonic bloom by 100%.Teknik vertikultur adalah metode yang digunakan bagi pemukiman masyarakat yang memiliki lahan sempit secara optimal. Teknik ini akan menyusun tanaman secara bertingkat dari atas kebawah dengan jenis tanaman yang beragam. Tujuan pengabdian pada masyarakat (PKM) ini adalah membantu meningkatkan pemahaman dan kemampuan mitra kelompok karang taruna tani villa pasir mas untuk bertanam sayuran sehingga dapat memenuhi kebutuhan sayuran sehari-hari dan mengurangi biaya hidup dengan memanfaatkan lahan yang ada menggunakan teknologi sonic bloom. Mitra pengabdian pada masyarakat yang dilatih pada pengabdian ini adalah Mitra berusia 30-50 tahun yang berjumlah 25 orang. Metode yang digunakan adalah sosialisasi, pelatihan dan pendampingan. Hasil yang dicapai adalah meningkatnya pemahaman Mitra tentang teknologi sonic bloom menjadi 80%, pengetahuan Mitra 98% dan keinginan Mitra untuk melakukan budidaya sayuran dengan sonic bloom sebesar 100%
ANALISIS USAHA TERNAK ITIK BERTELUR DI DESA TANJUNG MEDAN LABUHAN BATU SELATAN
No full textDuck farming needs to pay attention to the problems encountered in the process of raising ducks and efforts to deal with them need to be done. The purpose of this research is to analyze the business of laying ducks in Tanjung Medan, South Labuhanbatu Regency. This research was compiled based on a purposive survey method and primary data acquisition using questionnaires for duck breeders. This research found that in one period the farmer needs to spend IDR 20,000,000 capital with a livestock population of 150 heads. Income for 4 months ranges from IDR 21,450,000 Keywords: analysis, ducks, business, raising, laying eggsINTISARIBudidaya itik perlu diperhatikan masalah yang dihadapi dalam proses beternak dan perlu dilakukan upaya penanganan. Tujuan riset ini adalah melakukan analisis usaha ternak itik petelur di desa tanjung medan labuhanbatu selatan. Riset ini disusun berdasarkan metode survey secara purposive dan perolehan data primer dengan kuisioner kepada peternak itik. Riset ini memperoleh hasil bahwa dalam satu periode peternak perlu mengeluarkan modal Rp 20.000.000 dengan populasi ternak sebanyak 150 ekor. Penghasilan selama 4 bulan berkisar RP 21.450.000 Kata Kunci: analisis, itik, usaha, berternak, bertelu
TINGKAT PENGETAHUAN KELOMPOK KARANG TARUNA TANI VILLA PASIR MAS DALAM PEMBUATAN PUPUK ORGANIK CAIR (POC) BERBAHAN DASAR AIR CUCI BERAS DALAM PERTANIAN BERKELANJUTAN
No full textPerkembangan pertanian ramah lingkungan diiringi dengan tingginya permintaan produk organik. Jenis limbah rumah tangga bermacam-macam, namun sekitar 75% limbah rumah tangga merupakan sampah organik dan sisanya merupakan sampah anorganik. Sumber limbah terbesar yang dapat menyebar dan berpotensi mencemari lingkungan adalah limbah rumah tangga. Mengolah limbah ini menjadi produk yang bernilai ekonomi tinggi, seperti pupuk organik cair, merupakan salah satu penanggulangan yang dapat dilakukan. Limbah yang paling banyak dihasilkan oleh rumah tangga adalah air cucian beras dapat dimanfaatkan sebagai bahan baku utama dalam pembuatan pupuk organik cair. Kegiatan ini menggunakan metode penyuluhan dan pelatihan bagi ibu rumah tangga dan masyarakat setempat. Berdasarkan hasil evaluasi dari sesi praktek dapat ditarik kesimpulan bahwa kegiatan ini secara keseluruhan berhasil meningkatkan kemampuan peserta dalam pembuatan pupuk organik cair dan cara penggunaannya pada tanaman. Antusiasme peserta terhadap pelatihan terlihat selama kegiatan pelatihan ini berlangsung. Hal ini dibuktikan pada saat pemateri memaparkan data hasil uji coba penggunaan pupuk organik cair pada tanaman
Isolation And Characterization Of Nitrogen Fixing Fungi From Fruit And Vegetable Waste Compost
No full textNitrogen fixing fungi are fungi capable of fixing free nitrogen into ammonium or nitrate, so that it can be absorbed by plants. Many species of microbes/fungi have the ability to fix nitrogen, but very few are able to excrete nitrogen in the form of ammonia so that their contribution in providing nitrogen for plants is also still low. This study aims to determine the characteristics and type of nitrogen fixing fungi in fruit and vegetable waste compost. The method used in this research was descriptive method. Identification of nitrogen-fixing fungi was carried out macroscopically by looking at the color of the colonies, the shape of the colonies, and the diameter of the fungal colonies, an then identified by molecularly. There were 4 isolates of nitrogen-fixing fungi capable of forming clear zones on Jensen's media with different morphological characteristics and nitrogen-fixing abilities. The largest diameter of the clear zone was shown in isolate A3 of 3.2 cm which is the fungus Aspergillus niger strain SG1
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