Garuda - Garba Rujukan Digital

Effects of Indole Acetic Acid (IAA) and Indole Butyric Acid (IBA) to The Growth and Rooting of Ironwood (Eusideroxylon zwageri Teijsm. & Binn.) Air Layering Bambang Irawan; Rike Puspitasari Tamin; Rizky Ayu Hardiyanti
Jurnal Manajemen Hutan Tropika Vol. 25 No. 2 (2019)
Publisher : Institut Pertanian Bogor (IPB University)

Due to over exploitation, the population of Eusideroxylon zwageri is decreasing drastically. One simple technique to conserve the last remaining genetic resources of E. zwageri is by air layering. The experiment was divided into two. The experiment was conducted from July 2018 to February 2019. The first experiment was conducted using branches that grew from coppices while the second experiment using twigs that grew from normal adult trees. Randomized Block Design was applied with three replicates. The treatments were consisted of nine concentration of auxin namely 0 ppm of auxin; 1, 000 ppm; 1,500 ppm; 2,000 ppm and 2,500 ppm of IAA and 1,000 ppm; 2,000 ppm; 3,000 ppm and 4,000 ppm of IBA. The result of experiment shows that the IBA growth regulator seems to be more effective in regulating growth and rooting of E. zwageri air layering compared to IAA. Results for air layering which was taken from coppices revealed that 1,000 ppm of IBA obtained the best results. Air layering of branches taken from coppice is possible even without any additional growth regulator. While, air layering of twigs which was taken from normal trees revealed that the best treatment is 3,000 ppm of IBA.

Morphological Responses of a Light-Demanding Alstonia scholaris and a Shade-Tolerant Eusideroxylon zwageri to the Air Humidity and Light Intensity Bambang Irawan; Rike Puspitasari Tamin; Rizky Ayu Hardiyanti
Jurnal Manajemen Hutan Tropika Vol. 27 No. 3 (2021)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.27.3.193

The response of tropical trees to the change of light intensity has been reported to be varied among different species. Some reports argued that the growth was increasing parallel to the increasing of light intensity, but other reports mentioned that the sensitivity to the light intensity was depending on the species. Another environmental factor that has been scientifically proven to affect tree growth is humidity. While humidity itself also directly affected by the light intensity in the forest ecosystems. Therefore, it is possible that the growth pattern of trees under different light intensities is also affected by air humidity under the canopy. This research aimed to study the growth response of a light-demanding Alstonia scholaris and a shade-tolerant Eusideroxylon zwageri to the different levels of air humidity and light intensity. The experiment was conducted in Jambi, Indonesia from April to November 2019. The experiment was carried out using split plot design with factorial treatments. The main plot was the air humidity with three levels and the sub plots was light intensity with five levels. Four replicates were applied. In general, the A. scholaris tends to be more sensitive to the humidity and light intensity compared to E. zwageri. In particular, A. scholaris tends to be more sensitive to the light intensity while, E, zwageri is more sensitive to the humidity. However, there is also strong indication that the effects of light intensity to the growth, especially for A. scholaris, was affected by the humidity level.

Exploration of Tree Species in Muaro Jambi Temple Complex: EKSPLORASI JENIS POHON DI KOMPLEKS CANDI MUARO JAMBI Rike Puspitasari Tamin; Suci Ratna Puri; Rizky Ayu Hardiyanti
Media Konservasi Vol 24 No 3 (2019): Media Konservasi Vol. 24 No. 3 Desember 2019
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Kompleks Candi Muaro Jambi merupakan salah satu wisata andalan Provinsi Jambi yang mulai dikenal di dalam maupun di luar negeri. Keberadaan jenis-jenis pohon hutan yang terdapat di kompleks percandian Muaro Jambi sangat penting untuk dipertahankan. Kegiatan eksplorasi botani di kompleks percandian Muaro Jambi sangat penting untuk dilaksanakan dalam rangka melakukan inventarisasi dan identifikasi jenis-jenis pohon yang ada. Data yang diperoleh akan berguna dalam kegiatan konservasi dan pelestarian tumbuhan hutan tropis secara menyeluruh. Penelitian dilaksanakan di lokasi Candi Koto Mahligai, di areal resapan air/sepanjang jalur sungai di Kompleks Candi Muaro Jambi, Desa Muara Jambi, Kecamatan Muaro Sebo, Kabupaten Muaro Jambi dan Laboratorium Silvikultur dan Herbarium Fakultas Kehutanan Universitas Jambi. Penelitian dilaksanakan selama enam bulan dari bulan April sampai dengan bulan Oktober 2018. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman jenis-jenis pohon yang terdapat di areal Candi Mahligai dan areal resapan air kompleks Candi Muaro Jambi. Penelitian ini menggunakan metode purposive sampling. Tahapan kegiatan penelitian terdiri dari eksplorasi, pembuatan spesimen herbarium, studi pustaka, identifikasi Jenis. Hasil yang didapatkan yaitu suku yang dijumpai dalam wilayah Candi Koto Mahligai dan Sempadan sungai yang terdapat dalam kompleks Candi Muaro Jambi adalah sebanyak 17 suku, antara lain : Anacardiaceae, Burseraceae, Cucurbitaceae, Dilleniaceae, Euphorbiaceae, Fabaceae, Hyperaceae, Lythraceae, Malvaceae, Meliaceae, Moraceae, Oxalidaceae, Phyllanthaceae, Rubiaceae, Salicaceae, Sapindaceae, Verbenaceae. Jenis pohon yang paling banyak ditemui adalah jenis Peronema canescens Jack (Sungkai) sebanyak 86 individu dan Lansium parasiticum (Duku) yaitu sebanyak 38 individu. Kata kunci: eksplorasi , Candi Muaro Jambi, jenis pohon

ASSOCIATION BETWEEN DOMINANT TREES SPECIES IN LOWLAND TROPICAL FOREST (EDUCATION FOREST OF JAMBI UNIVERSITY) Nursanti Nursanti; Rizky Ayu Hardiyanti; Ade Adriadi
Media Konservasi Vol 26 No 2 (2021): Media Konservasi Vol. 26 No. 2 Tahun 2021
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.26.2.92-98

Lowland forest vegetation can still be found on the Jambi University Campus, namely at the Jambi Mendalo University Educational Forest (HPUJM). Jambi University Educational Forest is administratively located in Mendalo Indah Village, Jambi Luar Kota District, Muaro Jambi Regency, Jambi Province. Vegetation communities are formed by the presence and interaction of the various types of plants that compose them. The form of interaction between plant species in a community is called an association. Associations can be in the form of positive associations and negative associations. This research was conducted to know the association between dominant tree species. This study used a purposive sampling method by determining a sampling area of 9600 m2 or 0.96 ha measuring 160m x 60m, divided into 24 sub-plots, each measuring 20m x 20m. Species having an Importance Value Index (IVI) of ≥ 10% were used as the association analysis. The 2x2 contingency table was used to analyze whether or not associations were present between tree species. The results showed, of 15 dominant tree combinations, there were only 4 associated combinations, namely the association between Aporosa lucida and Vitex pinnata, the association between Endospermum diadenum and V.pinnata, the association of Litsea ferruginea with Gironniera diadenum, the association of L. ferruginea with V.pinnata. Key words: association, dominant tree, lowland forest

PENGARUH PEMBERIAN PUPUK NPK TERHADAP PERTAMBAHAN BIBIT MERBAU DARAT (intsia palembanica) DI PEMBIBITAN: The effect of NPK fertilizer on the growth of merbau land (Intsia palembanica) seedlings in nursery Rizky Ayu Hardiyanti; Hamzah Hamzah; Ade Andriani
Jurnal Silva Tropika Vol. 6 No. 1 (2022): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jsilvtrop.v6i1.20845

ABSTRACT Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Merbau is a tree that produces very high quality of hardwood. The quality of land merbau wood is currently increasingly scarce, this is due to illegal logging in various places, so it is necessary to carry out plant cultivation efforts for sustainable forest development. Efforts to conserve land merbau need to be done by providing good quality seeds. To increase the success of the nursery, it is necessary to carry out special treatments, one of which is the addition of fertilizer. The purpose of this study was to study the effect of giving the best dose of NPK fertilizer and the best dose of NPK fertilizer on the growth of ground merbau seedlings. This research was conducted in the experimental field of the Faculty of Agriculture, Jambi University, for 4 months using a completely randomized design (CRD) consisting of 5 levels of treatment with 5 replications each. Each treatment unit consisted of 4 plants and one of them was a destructive sample plant, so 100 plants were obtained. The results showed that the effect of application of NPK fertilizer (15-15-15) increased plant height growth, number of leaves, shoot dry weight, root dry weight, root shoot ratio and total dry weight. Treatment of different doses of NPK fertilizer gave different effects on the growth of merbau plants and gave the best results at a dose of 8 g/polybag.Â Keywords: merbau land, NPK fertilizer, nursery Â ABSTRAK Merbau adalah pohon penghasil kayu keras yang sangat berkualitas tinggi. Kualitas kayu Merbau darat saat ini semakin langka hal ini disebabkan karena terjadinya penebangan liar diberbagai tempat, sehingga perlu dilakukannya upaya budidaya tanaman untuk pembangunan hutan yang lestari. Upaya dalam pelestarian Merbau darat perlu dilakukan dengan cara penyediaan bibit yang berkualitas baik. Untuk meningkatkan keberhasilan pembibitan perlu dilakukannya perlakuan-perlakuan khusus salah satunya dengan penambahan pupuk. Tujuan dari penelitain ini adalah untuk menganalisis pengaruh pemberian dosis pupuk NPK dan dosis pupuk NPK terbaik pada pertumbuhan bibit merbau darat. Penelitian ini dilaksanakan di Lahan percobaan Fakultas Pertanian Universitas Jambi, selama 4 bulan dengan menggunakan rancangan acak lengkap (RAL) terdiri dari 5 taraf perlakuan dengan masing-masing ulangan 5 kali. Setiap satuan perlakuan terdiri dari 4 tanaman dan salah satunya tanaman sampel destruktif maka di peroleh 100 tanaman. Hasil penelitian menunjukan bahwa pengaruh pemberian pupuk NPK (15-15-15) meningkatkan pertumbuhan tinggi tanaman, jumlah daun, berat kering tajuk, berat kering akar, rasio pucuk akar dan berat kering total. Perlakuan dosis pupuk NPK yang berbeda memberikan pengaruh yang berbeda terhadap pertumbuhan tanaman Merbau darat dan memberikan hasil terbaik pada dosis 8 g/polybag. Â Kata Kunci: merbau darat, pupuk NPK, pembibitan

Growth Increase of Gelam (Melaleuca Leucadendron) Burnt Peatland Through the Provision of Soil Conditioner (Study in Londerang Peat Protection Forest) Rike Puspitasari Tamin; Richard Robintang Parulian Napitupulu; Jenny Rumondang; Rizky Ayu Hardiyanti
Jurnal Penelitian Pendidikan IPA Vol 10 No 10 (2024): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i10.8786

The protected forest of Londerang Jambi is an area of hydrological unity with a surface area of 12.484 ha that is located in the district of Tanjung Timur and Muaro Jambi, which is surrounded by palm plantations and forest of industrial crops and 10 villages in the Districts of Tanjung Jabung Timur and Jambi. Based on the results of the Landsat 8 OLI image analysis and the SPOT 7 image interpretation by WWF Indonesia in 2015 that the Londerang Forest Protection Area (HLG) has an area of 12.848 Ha, currently the steep vegetation cover that canopies closely on the HLG Londerang remains only less than 10% of the area of HLG londerang due to forest fires in 2015. An attempt to overcome the situation has been made, one of them in the HLG Londerang being made an of the Hydrological Union of Mendahara-Sungai Batanghari which has been intervened by the Badan Restorasi Gambut (BRG). This effort was also carried out by the KIFC (Korea Indonesia Forest Center) by revegetating the blocks of land that had been burned in HLG Londerang. The planting has been carried out from the beginning of 2022 to December 2022. The species of plants planted among them are Pulai Rawa (Alstonia scholaris), Balangeran (Shorea balangeran), Gelam (Melaleuca leucadendron). In order to support the success of the revegetation, intensive maintenance is required, including the provision of soil fertilizers such as dolomite and NPK fertilizer. The research was conducted for seven months from May to December 2023 at HLG Londerang. Measuring fields are made with group random designs (RAK). The clustering is based on the difference in the height of the groundwater surface

Optimalisasi Pertumbuhan Sengon Solomon (Falcataria Moluccana (Miq.) Barneby & Grimes) Di Lahan Bekas Tambang Batubara Melalui Aplikasi Kompos Solid Decanter : Optimizing the growth of solomon sengon (Falcataria Moluccana (Miq.) Barneby & Grimes) in used land coal mining through the application solid decanter compost Hardiyanti, Rizky Ayu; Tampubolon, Gindo; Sihombing, Willy Sahata
Jurnal Silva Tropika Vol. 7 No. 2 (2023): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v7i2.31570

Sengon solomon (Falcataria moluccana ((Miq.) Barneby & Grime) merupakan salah satu jenis tanaman dengan suku Fabaceae yang memiliki pertumbuhan yang cepat (fast growing). Tanaman sengon mudah beradaptasi terhadap lingkungan dan banyak direkomendasikan sebagai tanaman yang cocok untuk reklamasi tambang terutama tambang batubara. Penambangan batubara dapat menyebabkan lahan terdegredasi sehingga menurunnya sifat fisik, kimia, biologi tanah dan mengakibatkan terganggunya pertumbuhan tanaman. Tanah bekas tambang batubara yang ada di PT. Nan Riang memiliki kandungan C-organik sangat rendah sampai rendah (0,08%- 1,58%). Bahan organik yang rendah perlu dilakukan perbaikan pada media tanam, yaitu dengan cara memberikan bahan organik. Salah satu pembenah tanah yang bisa digunakan dalam memperbaiki tanah yaitu limbah kelapa sawit yaitu Solid Decanter. Tujuan dari penelitian ini yaitu untuk menganalisis keberhasilan revegetasi tanaman sengon Salomo terhadap pemberian Solid Decanter. Penelitian ini dilakukan di Areal konsesi pertambangan batubara PT. Nan Riang yang berlokasi di Desa Ampelu Mudo, Kecamatan Muaro Tembesi, Kabupaten Batanghari, Provinsi Jambi. Penelitian dilakukan selama 4 bulan (Juli-November 2022). Rancangan percobaan menggunakan Rancangan Acak Kelompok (RAK), terdapat 7 perlakuan, dengan ulang 4 kali, sehingga terdapat 28 petak percobaan, setiap petaknya terdapat 4 tanaman sehingga jumlah tanaman sebanyak 112 tanaman. Hasil penelitian menunjukkan bahwa pemberian kompos solid decanter pada tanaman sengon solomo memberikan hasil yang nyata terhadap pertumbuhan tanaman. Pemberian kompos solid decanter 1.5 kg per lubang tanam merupakan pemberian terbaik terhadap pertumbuhan tinggi, diameter, jumlah daun, berat kering tajuk, dan berat kering akar tanaman.

Pengaruh Penambahan Berbagai Bahan Organik pada Media Tanam Sub Soil Terhadap Pertumbuhan Bibit Petai (Parkia speciosa): Effect of Adding Various Organic Ingredients to The Media Planting Sub Soil for Growth Petai Seeds (Parkia speciosa Hamzah, Hamzah; Hardiyanti, Rizky Ayu; Handayani, Rajjitha; Rumondang, Jenny; Utari, Indah Tri
Jurnal Silva Tropika Vol. 8 No. 1 (2024): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v8i1.35826

ABSTRACT Petai is a plant that belongs to the MPTS (Multi Purpose Tree Species) plant type which can be used multiple times for both wood and non-wood. Petai also has benefits from an economic perspective (fruit and wood) and ecology (legume plants fertilize the soil) so it needs to be cultivated well. There are several factors that influence the quality of cultivation results, one of which is the planting media. The planting medium used is soil in the sub-soil layer as an alternative to top soil. However, this layer is not as fertile as the top soil layer, so it is necessary to add soil improving materials (Ameliorants), for example organic materials. This research aims to analyze the effect of adding various organic materials to sub-soil planting media on the growth of Petai seedlings and to obtain the best organic material composition to add to sub-soil planting media which can have a real influence on the growth of Petai seedlings. This research was carried out for 3 months using a completely randomized design (CRD) method with 1 factor, namely planting media (M) consisting of 5 treatments, namely m1 (Sub soil + compost 3:1), m2 (Sub soil + husk charcoal 2:1), m3 (Sub soil + Cocopeat 2:1), m4 (Sub soil + Boiler ash 4:1) and m5 (Sub soil + Laying chicken manure + Sand 1:2:1). The best organic material composition to add to the sub soil planting medium is cocopeat (2:1). Keywords: petai, planting media, organic materials. ABSTRAK Petai merupakan tumbuhan yang tergolong dalam jenis tanaman MPTS (Multi Purpose Tree Species) yang dapat dimanfaatkan secara ganda baik kayu maupun non kayunya. Petai juga memiliki manfaat dari segi ekonomi (buah dan kayunya) maupun ekologi (tumbuhan legum menyuburkan tanah) sehingga perlu dibudidayakan dengan baik. Ada beberapa faktor yang mempengaruhi kualitas hasil budidaya salah satunya media tanam. Media tanam yang digunakan adalah tanah pada lapisan sub soil sebagai alternatif pengganti tanah top soil. Namun, lapisan ini tidak sesubur lapisan top soil sehingga diperlukan penambahan bahan pembenah tanah (Amelioran) contohnya bahan organik. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan berbagai bahan organik pada media tanam sub soil terhadap pertumbuhan bibit petai serta untuk mendapatkan komposisi bahan organik terbaik untuk ditambahkan ke media tanam sub soil yang dapat memberikan pegaruh nyata dalam pertumbuhan bibit Petai. Penelitian ini dilaksanakan selama 3 bulan dengan menggunakan metode rancangan acak lengkap (RAL) 1 faktor yaitu media tanam (M) yang terdiri dari 5 perlakuan yaitu m1 (Sub soil + kompos 3:1), m2 (Sub soil + arang sekam 2:1), m3 (Sub soil + Cocopeat 2:1 ), m4 (Sub soil + Abu boiler 4:1 ) dan m5 (Sub soil + Pupuk kandang ayam petelur + Pasir 1:2:1). Komposisi bahan organik terbaik untuk ditambahkan ke dalam media tanam sub soil adalah cocopeat (2:1). Katakunci: petai, media tanam, bahan organik.

Optimalisasi Pertumbuhan Bibit Salam (Syzygium Polyantha Wight) dengan Pemberian Pupuk NPK dan Arang Sekam: Optimizing the Growth of Salam Seedlings (Syzygium Polyantha Wight) by Providing NPK Fertilizer and Husk Charcoal Hamzah, Hamzah; Hardiyanti, Rizky Ayu; Nofianti, Zera Olivia
Jurnal Silva Tropika Vol. 7 No. 1 (2023): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v7i1.36863

ABSTRAK Salam (Syzygium polyantha wight) salah satu Tanaman asli Indonesia dengan banyak potensi serta nilai ekonomi yang tinggi karena hampir semua bagiannya dapat memberikan keuntungan serta dapat tumbuh di berbagai tempat. Salam termasuk kedalam family Mirtaceae, dapat hidup pada kondisi kualitas kesuburan tanah yang rendah yaitu tanah ultisol. Faktor yang dapat mempengaruhi pertumbuhan pada tanaman yaitu faktor eksternal. Pada faktor eksternal perlu dilakukan tindakan silvikultur dengan cara pemupukan. Pupuk yang dapat digunakan adalah pupuk majemuk NPK dan Arang Sekam. Tujuan dalam penelitian ini untuk menganalisis respons pertumbuhan bibit tanaman salam terhadap pemberian pupuk NPK dan arang sekam serta untuk mendapatkan dosis terbaik pupuk NPK dan arang sekam terhadap pertumbuhan tanaman salam. Penelitian ini dilaksanakan di Laboratorium Hutan pendidikan dan kebun pembibitan Program Studi Kehutanan Fakultas Pertanian Universitas Jambi. Penelitian ini dilakukan dengan menggunakan metode Rancangan Acak Lengkap (RAL) dengan faktor tunggal yaitu pupuk majemuk NPK dan arang sekam. Hasil penelitian menunjukan bahwa Tanaman Salam memberikan respons tidak nyata terhadap pemberian pupuk NPK dan Arang Sekam. Dari semua perlakuan menunjukan bahwa Pemberian pupuk NPK 20 g 60 g arang sekam/polybag merupakan dosis terbaik dari pertumbuhan bibit tanaman salam. Kata Kunci : Arang Sekam, Bibit Salam, Pupuk Majemuk NPK ABSTRACT Salam (Syzygium polyantha wight) is one of the native Indonesian plants with a lot of potential and high economic value because almost all of its parts can provide benefits and can grow in various places. Salam belongs to the Mirtaceae family, can live in conditions of low soil fertility quality, namely ultisol soil. Factors that can influence plant growth are external factors. For external factors, it is necessary to carry out silvicultural measures by means of fertilization. Fertilizers that can be used are NPK compound fertilizer and husk charcoal. The aim of this research was to analyze the growth response of laurel seedlings to the application of NPK fertilizer and husk charcoal and to obtain the best dose of NPK fertilizer and husk charcoal for the growth of laurel plants. This research was carried out at the educational Forest Laboratory and nursery of the Forestry Study Program, Faculty of Agriculture, Jambi University. This research was conducted using the Completely Randomized Design (CRD) method with a single factor, namely NPK compound fertilizer and husk charcoal. The research results showed that the bay plant gave an insignificant response to the application of NPK fertilizer and husk charcoal. Of all the treatments, it shows that giving 20 g of NPK fertilizer to 60 g of husk charcoal/polybag is the best dose for the growth of bay plant seeds. Keywords: Salam seeds, NPK compound fertilizer, husk charcoal

Perbandingan Laju Fotosintesis pada Tanaman Tanjung (Mimusops elengi Linn.) dan Tanaman Merbau Darat (Intsia palembanica) pada Berbagai Media Tanam: Comparison of Photosynthesis Rates in Tanjung (Mimusops elengi Linn.) and Merbau Darat (Intsia palembanica) on Various Gowing Media Hardiyanti, Rizky Ayu; Puri, Suci Ratna; Handayani, Rajjitha; Rif’atunidaudina, Ria; Rumondang, Jenny; Yandi, Wahyu Nazri; Muryunika, Rince
Jurnal Silva Tropika Vol. 9 No. 1 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i1.44376

ABSTRACT Sunlight plays a crucial role in the process of photosynthesis because it provides the energy source that plants need. The intensity of light received by plants greatly affects their growth and the efficiency of photosynthesis. The rate of photosynthesis in plants is also greatly influenced by the intensity of sunlight, where if there is sufficient light intensity, adequate amounts of water and carbon dioxide, and appropriate temperatures, photosynthesis will usually reach its peak. The purpose of this research is to observe the rate of photosynthesis in Tanjung (Mimusops elengi Linn.) and Merbau darat (Intsia palembanica) plants with various treatments such as the addition of topsoil, subsoil, rice husk charcoal, cocopeat, sand, cow dung fertilizer, and NPK fertilizer using a plant photosynthesis meter. The research was conducted at the Educational Forest and Nursery Laboratory of the Forestry Department, Faculty of Agiculture, Jambi University. The results of this study indicate that Tanjung with the treatment of topsoil, rice husk charcoal, and 5 g of NPK is the best fertilizer application, as evidenced by the highest photosynthesis rate of 31.7 µmolCO2 m-2s-1. Meanwhile, for the merbau darat seedlings, the treatment with topsoil, sand, and 2 g of NPK fertilizer yielded the highest results for the photosynthesis rate. Keywords: photosynthesis rate, NPK fertilizer, merbau darat, tanjung, subsoil ABSTRACT Cahaya matahari sangat berperan dalam proses fotosintesis karena dapat memberikan sumber energi yang sangat dibutuhkan oleh tanaman. Intensitas cahaya yang diterima tanaman sangat mempengaruhi pertumbuhan dan efisiensi fotosintesis. Laju fotosintesis pada tanaman juga sangat di pengaruhi oleh intensitas cahaya matahari, dimana jika intensitas cahaya yang cukup, jumlah air dan karbon dioksida yang cukup serta suhu yang sesuai, fotosintesis biasanya akan mencapai puncaknya. Tujuan dari penelitian ini adalah untuk melihat seberapa tinggi laju fotosintesis pada tanaman Tanjung (Mimusops elengi Linn.) dan Merbau darat (Intsia palembanica) dengan berbagai perlakuan seperti penambahan media topsoil, subsoil, arang sekam, cocopeat, pasir, pupuk kotoran sapi dan pupuk NPK dengan alat plant photosyntesis meter. Penelitian dilakukan di Laboratorium Hutan Pendidikan dan Pembibitan Jurusan Kehutanan, Fakultas Pertanian Universitas Jambi. Hasil penelitian ini menunjukan bahwa tanaman Tanjung dengan pemberian perlakuan topsoil, arang sekam dan NPK 5 g merupakan pemberian pupuk terbaik dengan hasil laju fotosintesis tertinggi yaitu 31,7 µmolCO2m-2s-1. Sedangkan pada bibit merbau darat dengan pemberian perlakuan topsoil, pasir dan pupuk NPK 2 g mendapatlan hasil tertinggi untuk laju fotosintesisnya. Kata kunci: laju fotosintesis, merbau darat, pupuk NPK, tanjung, subsoil

Title

Found 12 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 12 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 12 Documents
Search