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All Journal Risenologi Jurnal Cakrawala Ilmiah
Imam Safir Alwan Nurza
Universitas Negeri jakarta
Humanities Chemistry Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Penggunaan AB Mix dan Media Tanam terhadap Viabilitas Tanaman Selada (Lactuca sativa L. Var. New Grand Rapids) dalam Hydroponic Wick System Imam Safir Alwan Nurza; Diliviva Venesia
Risenologi Vol. 5 No. 1 (2020): Risenologi
Publisher : Kelompok Peneliti Muda Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.406 KB) | DOI: 10.47028/j.risenologi.2020.51.68

Abstract

Indonesia is a country that has abundant natural resources. One of the natural resource wealth is in the agricultural sector. The agricultural sector has a variety of agricultural commodities found in Indonesia. One of them is horticulture. Lettuce (Lactuca sativa L.) is a horticultural commodity. The purpose of this study was to determine the use of ab mix and planting media on lettuce (Lactuca sativa L. var New Grand Rapids) in increasing growth and yield after 40 Days After Planting (HST). This research method is an experiment with statistical data collection and analysis techniques. The results of this study are the number of leaves, plant height, and wet weight in the ab mix is ??higher than aquades (control) because the ab mix provides nutrients for plant growth so that the plant becomes tall and enlarged with its leaves looking wide. However, the number of seeds germinated and plant viability in aquades (control) was higher than ab mix because there was an inorganic salt in ab mix that inhibited seed germination so that the seed membrane in absorbing water became impermeable.
Analysis Management of Ornamental Plant Care on The Asri Taman and Sanggar Indah Jaya Store in Cempaka Putih Sub-District Imam Safir Alwan Nurza
Risenologi Vol. 5 No. 2 (2020): Risenologi
Publisher : Kelompok Peneliti Muda Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47028/j.risenologi.2020.52.108

Abstract

Management of ornamental plant care is regulated on how to care for ornamental plants both in the form of herbs and succulents nor woody plants such as shrubs and trees, so that it can produce quality ornamental plants. The research purpose was to find out the management of ornamental plant care on Asri Taman and Sanggar Indah Jaya stores. The plant store population found there are four shops until the samples can be taken are two shops. The sampling technique used to random sampling which takes a random sample from the population. Data collection techniques by interview and observation. Interview with information from sources related to the management of ornamental plant care in the store. Observation by observing ornamental plants both in the form of herbs and succulents nor woody such as shrubs and trees. The research resulted that Asri Taman and Sanggar Indah Jaya stores that are very good in regulating watering, fertilizing, and giving pesticides in ornamental gardens which are indicated by green leaves, not wilting, and not growing adventitious roots on the stem, so that it can produce quality ornamental plants.
Uji Kelayakan Tanah terhadap Penanaman Tanaman Pisang, Singkong, dan Ubi Jalar di Daerah Sekitar Vila Silma Kecamatan Cilember Kabupaten Bogor Imam Safir Alwan Nurza
Risenologi Vol. 5 No. 2 (2020): Risenologi
Publisher : Kelompok Peneliti Muda Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47028/j.risenologi.2020.52.111

Abstract

Cilember merupakan daerah yang punya potensi besar sebagai daerah perkebunan karena memiliki iklim yang sejuk dan mempunyai irigasi yang cukup baik. Perkebunan Cilember memiliki beberapa jenis tanaman yaitu pisang, singkong, dan ubi jalar. Namun mayoritas perkebunan di daerah cilember adalah ubi jalar. Perkebunan di sekitar Villa Silma Kecamatan Cilember memiliki beberapa permasalahan, yaitu postur tanah yang berbentuk kerikil, kering, daun tanaman pisang dan singkong layu dan stres lingkungan. Tujuan penelitian ini untuk mengetahui kelayakan tanah pada tanaman pisang, singkong, dan ubi jalar di lahan kebun sekitar Villa Silma di Kecamatan Cilember Kabupaten Bogor. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data secara observasi yang meliputi kelembapan, pH, tekstur, dan warna pada tanah. Analisis data dilakukan secara deskriptif kualitatif dan observasi pada kelembapan, pH, tekstur, dan warna pada tanah. Hasil penelitian ini adalah tanah di Cilember memiliki tekstur halus, kering dan menyerupai kerikil dengan warna coklat, kelembapan tanah 40%, dan pH 6,5.
Diversity, Evenness, and Abundance of Epiphytic Ferns in The Area Around Villa Silma, Cilember Sub-District, Bogor Regency Siska Aprilia Kaulika; Imam Safir Alwan Nurza
Risenologi Vol. 6 No. 2 (2021): Risenologi
Publisher : Kelompok Peneliti Muda Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47028/j.risenologi.2021.62.192

Abstract

This research aimed to find out the diversity, evenness, and distribution abundance of epiphytic ferns scattered in the area around Villa Silma, Cilember District, Bogor Regency. This research used a purposive sampling method by taking samples as the data determined by determining the characteristics of the epiphytic ferns found. Collecting data in this research exploratively by exploring all epiphytic ferns found in the area and observations on the morphology of epiphytic ferns. Data were analyzed through the diversity index using the Shannon-Wiener index, distribution of abundance using the Margalef index, and evenness index using based on the value of the Shannon-Wiener species diversity index. The research results obtained that three species of epiphytic ferns were found in the area around Villa Silma, namely Asplenium nidus L., Asplenium adiantum-nigrum L., and Pyrrosia piloselloides (L.) M.G. Price with different numbers of individuals. The diversity index of epiphytic fern is 0.7 which indicates the level of diversity in the area is low. Then, The distribution of abundance and evenness epiphytic ferns is 0.6 which indicates that there are epiphytic ferns dominant in the area and the number of individuals in each species is unevenly distributed. The most abundant fern epiphytic was found is Asplenium nidus L. with 84 individuals. This because the environment allows it to spread and grow the spores of this epiphytic fern plant properly.
Isolasi dan Karakterisasi Patogenitas Mikroorganisme Penyebab Nekrosis pada Buah Jeruk Siam (Citrus nobilis Lour.) Imam Safir Alwan Nurza; Nabillatul Ismi Abrar; Siti Nurazizah
Risenologi Vol. 7 No. 2 (2022): Risenologi
Publisher : Kelompok Peneliti Muda Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47028/j.risenologi.2022.72.420

Abstract

Jeruk siam (Citrus nobilis Lour.) merupakan tanaman holtikultura yang terkenal secara luas dengan rasa yang khas, berkulit tipis, dan rasa manis yang sedikit keasaman. Penyakit yang menyerang buah jeruk dapat disebabkan oleh serangan mikroorganisme berupa bakteri atau cendawan. Tujuan penelitian ini adalah mengisolasi, mengidentifikasi, dan mengkarakterisasi serta mengetahui insidensi dan keparahan penyakit dari mikroorganisme penyebab nekrosis pada jeruk siam (Citrus nobilis Lour.). Metode yang digunakan adalah deskriptif kualitatif. Hasil penelitian menunjukkan bahwa isolat mikroorganisme yang diperoleh dari buah jeruk siam (Citrus nobilis Lour.) bergejala nekrosis adalah bakteri isolat CBN-1 dengan bentuk bacil berlendir, circular, berwarna putih, tepi entire, elevasi low convex, dan struktur dalam smooth. CBN-1 dapat menginfeksi buah jeruk siam (Citrus nobilis Lour.) dengan patogenitas berupa insidensi penyakit 100%, keparahan penyakit 50%, laju infeksi 9%, dan AUPDC 1,75.
PHYSICAL AND CHEMICAL SCARIFICATION ON DORMANCY BREAKING OF ROSARY PEA SEEDS (ABRUS PRECATORIUS L.) Imam Safir Alwan Nurza
Jurnal Cakrawala Ilmiah Vol. 2 No. 9: Mei 2023
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract: Seeds are part of the plant containing embryo that grows through the germination process. This process involves metabolism occurs in seeds to produce roots and shoots. However, this metabolic process is inhibited by the environment and genetics of the seeds itself. Thus, the seeds experience dormancy and fail to grow. Dormancy can be broken with help of physical and chemical scarification to accelerate seed germination. The research aim was to determine the physical and chemical scarification seed dormancy breaking in increasing the germination rosary pea seeds (Abrus precatorius L.). The research method used was experimental randomized block design using 4 treatment groups, namely cracked (F1), sanded (F2), and soaked in 50% H2SO4 solution for 15 minutes (K1) and 30 minutes (K2) and the group control with water. The viability germination, germination rate (GER), vigor index (VI), simultaneous growth (SG) normal sprouts on day 6, and growth rate (GOR) were observed for two weeks. The results obtained that immersion in H2SO4 50% solution for 30 minutes and cracking could break the dormancy of rosary pea seeds and increase germination with higher viability of germination, GER, VI, SG, and GOR than immersion in 50% H2SO4 solution for 15 minutes and sanding.
Co-Authors Diliviva Venesia Nabillatul Ismi Abrar Siska Aprilia Kaulika Siti Nurazizah