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Respons Fisiologi Dan Hasil Lateks Tanaman Karet Klon Gt 1 Di Kebun Karet Rakyat Terhadap Sistem Eksploitasi Dan Curah Hujan, Yayuk Purwaningrum, Yenni Asbur, Dedi Kusbiantoro, Khairunnisyah

Jurnal Kultivasi

Klon GT 1 adalah klon Slow Starter (SS) dimana perubahan sukrosa menjadi partikel karet di dalam pembuluh lateks berlangsung lambat dan pada saat gugur daun hasil lateks lebih stabil. Penelitian ini bertujuan untuk mengetahui hubungan curah hujan dan sistem eksploitasi terhadap fisiologi dan hasil lateks klon GT1. Penelitian dilaksanakan di Kabupaten Langkat Kecamatan Besitang Sumatera Utara, ketinggian tempat 500 – 700 m di atas permukaan laut. Analisa fisiologi lateks di PT. Sucofindo Indonesia. Tanaman yang digunakan adalah klon GT 1 umur 25 tahun dengan besar lilit batang antara 60 – 75 cm, diukur dengan ketinggian 130 cm dari permukaan tanah. …

Respons Fisiologis Dan Agronomis Bibit Kopi Pada Kerapatan Naungan Yang Berbeda, Mochamad Arief Soleh, Tommy Ario Sirait, Mira Ariyanti, Santi Rosniawaty

Jurnal Kultivasi

Tanaman kopi seringkali dibudidayakan di areal hutan, dimana terdapat tanaman tahunan seperti pepohonan yang terus tumbuh sehingga menurunkan intensitas cahaya yang jatuh ke tanaman kopi. Hal ini menjadi masalah bagi pertumbuhan dan perkembangan tanaman kopi yang dinaungi pohon tersebut. Penelitian ini bertujuan untuk menguji fisiologis dan agronomis dua kultivar kopi dalam intensitas naungan yang berbeda untuk mendapatkan informasi kultivar kopi yang terbaik. Percobaan dilaksanakan dari bulan Maret hingga Juni 2020 di Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran, Jatinangor, Sumedang, Jawa Barat. Percobaan menggunakan Rancangan Petak Terbagi (Split plot) dengan dua faktor dan diulang sebanyak tiga kali. Taraf dari main …

Oil Bodies Sizes Variation Analyses Of Rapeseed In Two Locations As A Novel Trait For Genetic Engineering, Rita Andini, Muhammad Ikhsan Sulaiman, Murna Muzaifa, Yulia Dewi Fazlina, Christian Moellers

Jurnal Kultivasi

Tanaman raps (Brassica napus L.) adalah tanaman penghasil minyak utama di negara dengan iklim dingin seperti di Jerman. Minyak raps (Brassica napus L.) digunakan untuk bahan pangan, biodiesel, dan sebagai pakan ternak. Kandungan minyaknya bisa mencapai 33 – 48%. Tanaman minyak seperti kedelai (Glycine max), raps (Brassica napus L.), bunga matahari (Helianthus annuus) pada umumnya menyimpan kandungan minyaknya dalam suatu organela penyimpanan dikenal dengan ‘oil body’ yang mempunyai diameter antara 0,6 hingga 2,0 µm, tergantung dari spesies tanaman. Peningkatan kandungan minyak merupakan salah satu target pemuliaan di banyak tanaman minyak, termasuk di raps. Tulisan ini menceritakan tentang isolasi ‘oil body’ …

Interspersed Denuded Zone (Idz): How Patchy Leaf Litter Dynamics In A Buckthorn-Invaded Urban Woodland Can Affect Microarthropod Species Richness, Angela Stenberg

DePaul Discoveries

Biodiversity loss may serve as a key diagnostic of the Anthropocene. An important driver of this loss is by means of invasive species. In this study of a forest preserve in Chicago, Illinois we examined Interspersed Denuded Zones (IDZs for short), which are areas of patchy leaf litter in invaded forests caused in this case by the rapid decomposition of litter from buckthorn (Rhamnus cathartica). We characterized the leaf litter mass in IDZs and enumerated litter-inhabiting microarthropod populations. We found that plots of high buckthorn density are associated with IDZs: there was significantly less leaf litter mass in …

Determining The Novel Pathogen Neodothiora Populina As The Causal Agent Of The Aspen Running Canker Disease In Alaska, Loretta M. Winton, Gerard C. Adams, Roger W. Ruess

Aspen Bibliography

Neodothiora populina Crous, G.C. Adams & Winton was determined to be a new pathogen of trembling aspen (Populus tremuloides) growing in Alaska, based on completion of Koch’s Postulates in replicated forest and growth chamber inoculation trials. The pathogen is responsible for severe damage and widespread rapid mortality of sapling to mature aspen (≥ 80 years) in the boreal forests of interior Alaska, due to large diffuse annual (1–2 years) cankers. Isolation of the pathogen was challenging, and identification based on cultural characters was difficult. Fruiting bodies were not found on wild diseased trees, but erumpent pycnidia were found …

Evaluation Of Capacity Building For Forage And Livestock Production In Laos, Viengxay Photakoun

IGC Proceedings (1977-2023)

No abstract provided.

The Creeks And Communities Strategy: Accelerating Cooperative Riparian Restoration, Sandra Wyman, Sherman Swanson, Laura Van Riper

IGC Proceedings (1977-2023)

No abstract provided.

Efek Aplikasi Beberapa Taraf Ekstrak Sereh Dan Pemupukan Npk Terhadap Pertumbuhan Dan Hasil Padi Gogo Varietas Unsoed 1 Di Musim Kemarau, Yugi Rahayu Ahadiyat, Okti Herliana, Ida Widiyawati

Jurnal Kultivasi

Upaya peningkatan hasil padi gogo perlu dilakukan melalui efisiensi pupuk N, P, dan K (NPK). Aplikasi bahan alami nabati dengan aplikasi ekstrak sereh (Cymbopogon citratus) bisa dijadikan alternatif untuk mengefisienkan nutrisi pada tanaman padi gogo. Penelitian ini bertujuan untuk menetapkan konsentrasi ektrak sereh dan dosis pupuk NPK terhadap karakter fisiologi, pertumbuhan, dan hasil padi gogo. Penelitian dilakukan di Dusun Kalicacing, Desa Kalimandi, Kecamatan Purwareja Klampok, Kabupaten Banjarnegara pada bulan April sampai September 2017 dan menggunakan rancangan petak terbagi dengan tiga ulangan. Petak utama merupakan dosis pupuk N, P, K rekomendasi (100 kg N/ha, 100 kg P2O5/ha, dan 50 kg K2O/ha), …

Evaluasi Kegenjahan Dan Daya Hasil Jagung Manis Hibrida Indonesia Menggunakan Analisis Gge Biplot Pada Lingkungan Yang Berbeda, Dedi Ruswandi, Jajang Supriatna, Edi Suryadi, Nyimas Poppi Indriani, Noladhi Wicaksana, Muhammad Syafii

Jurnal Kultivasi

Uji multilokasi merupakan fase yang penting dalam menyeleksi hibrida jagung yang stabil pada lingkungan yang luas dan menyeleksi hibrida superior untuk lokasi spesifik. Tujuan penelitian ini yaitu untuk mengetahui kegenjahan dan daya hasil hibrida Padjadjaran, serta menentukan interaksi genotip dengan lingkungan (G x E), stabilitas, dan adaptabilitas karakter kegenjahan hibrida Padjadjaran di tiga lokasi selama dua musim yang berbeda di Jawa Barat. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan delapan belas perlakuan yang terdiri dari enam belas hibrida Padjadjaran dan dua kultivar cek. Percobaan dilaksanakan selama dua tahun berturut- turut yaitu tahun ke-1 (Maret sampai Juli, 2014) dan …

Moderate Plant–Soil Feedbacks Have Small Effects On The Biodiversity–Productivity Relationship: A Field Experiment, Josephine Grenzer, Andrew Kulmatiski, Leslie Forero, Anne Ebeling, Nico Eisenhauer, Jeanette Norton

Wildland Resources Student Research

Plant–soil feedback (PSF) has gained attention as a mechanism promoting plant growth and coexistence. However, most PSF research has measured monoculture growth in greenhouse conditions. Translating PSFs into effects on plant growth in field communities remains an important frontier for PSF research. Using a 4-year, factorial field experiment in Jena, Germany, we measured the growth of nine grassland species on soils conditioned by each of the target species (i.e., 72 PSFs). Plant community models were parameterized with or without these PSF effects, and model predictions were compared to plant biomass production in diversity–productivity experiments. Plants created soils that changed subsequent …

Do Early-Successional Weeds Facilitate Or Compete With Seedlings In Forest Restoration? Disentangling Abiotic Versus Biotic Factors, Mylen Arias, Rupesh R. Kariyat, Kimberly Wahl-Villarreal, Stephany Mendez, Jesus Chavana, Bradley O. Christoffersen

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

1. Semi-arid forests need cost-effective restoration strategies to address their severe degradation. Tree shelters are often used to minimize abiotic and biotic stress during seedling establishment. We asked if early-successional weeds act as a natural shelter by facilitating native seedlings, contingent on abiotic and biotic stressors and seedling ecological strategy.

2. We conducted a manipulative weed exclusion experiment at a semi-arid site in South Texas targeted for large-scale forest restoration to discern the net effect of weeds on the growth and survival of target thornscrub tree and shrub seedlings. We assessed the roles of contrasting seedling ecological strategies (fast vs. slow growth …

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Pasture Development In Guizhou Province: 25 Years Of New Zealand-China Co‐Operation, M. Philip Rolston, Jishi Xie, T. G. Harvey

IGC Proceedings (1977-2023)

No abstract provided.

Western Beef Development Centre: A Model For Research And Demonstration In Western Canada, Paul G. Jefferson

IGC Proceedings (1977-2023)

No abstract provided.

Integrating Knowledge From Research And Farmer Practice In The Development Of More Productive Forage Systems For Dairy Farms In South‐Eastern Australia, M. O'Kane, G. O'Brien, A. Crawford, Mark S. Paine, D. F. Chapman, J. J. Jacobs

IGC Proceedings (1977-2023)

No abstract provided.

Performance And Locus Of Control Of Small Farmers In Yunnan Province, Alan Mcdermott

IGC Proceedings (1977-2023)

No abstract provided.

LandscanTm‐-Graziers Using Soil Tests And Natural Indicators To Make Better Decisions, Michael J. Keys, B. W. Clements

IGC Proceedings (1977-2023)

No abstract provided.

A Participatory Assessment Of The Development Needs Of Semi‐Sedentary Pastoralists In Kenya, George A. Keya, M. Muga, M. Okoti, A. Adongo, M. Ngutu, D. Mbuvi, F. Wayua, M. Shibia

IGC Proceedings (1977-2023)

No abstract provided.

Research And Extension Experiences On Grassland Protection And Construction (Gpc) Techniques In China, Xiangyang Hou

IGC Proceedings (1977-2023)

No abstract provided.

Engaging Stakeholders To Implement Community‐Based Rangeland Rehabilitation Plans In Southern And Northeastern Ethiopia, G. Gebru, D. Amosha, S. Desta, L. Gizachew, A. Kebede, D. Layne Coppock

IGC Proceedings (1977-2023)

No abstract provided.

Townsville Tropical Savannas — An Innovative Approach To Urban‐Rural Education And Ecotourism, Greg A. Bruce

IGC Proceedings (1977-2023)

No abstract provided.

Modelling The Diffusion Of Innovation And Water Conservation Methods Through Social Networks In Semi‐Arid Rangelands, Paul Box, Yiheyis Maru

IGC Proceedings (1977-2023)

No abstract provided.

Hawai‘I Forest Review: Synthesizing The Ecology, Evolution, And Conservation Of A Model System, Kasey E. Barton, Andrea Westerband, Rebecca Ostertag, Elizabeth Stacy, Kawika Winter, Donald R. Drake, Lucas Berio Fortini, Creighton M. Litton, Susan Cordell, Paul Krushelnycky, Kapua Kawelo, Kealoha Feliciano, Gordon Bennett, Tiffany Knight

Life Sciences Faculty Research

As the most remote archipelago in the world, the Hawaiian Islands are home to a highly endemic and disharmonic biota that has fascinated biologists for centuries. Forests are the dominant terrestrial biome in Hawai‘i, spanning complex, heterogeneous climates across substrates that vary tremendously in age, soil structure, and nutrient availability. Species richness is low in Hawaiian forests compared to other tropical forests, as a consequence of dispersal limitation from continents and adaptive radiations in only some lineages, and forests are dominated by the widespread Metrosideros species complex. Low species richness provides a relatively tractable model system for studies of community …

Supporting Community Action With Science To Balance Pastoral Livelihoods And Wildlife Conservation In Savannas Of East Africa, R. Reid, D. Nkedianye, M. Said, D. Kaelo, M. Neselle, O. Makui, L. Onetu, P. Kristjanson

IGC Proceedings (1977-2023)

No abstract provided.

The Design Of A Consciousness‐Raising Campaign Against An Invasive Species In Uruguay Grasslands — The Case Of Eragrostis Plana Nees, Marcelo Pereira Machín

IGC Proceedings (1977-2023)

No abstract provided.

Farmers Field School Technology Extension Approach Increases Grassland Productivity And Improves Spiritual And Socio‐Economic Welfare Of Communities In Kenya, Apollo B. Orodho, Arwyn Bailey

IGC Proceedings (1977-2023)

No abstract provided.

Multi‐Stakeholder Engagement In Savanna Management In Eastern Indonesia, Bronwyn A. Myers, Rohan P. Fisher, Josef Maan, Agus Rawambaku, John Asbanu, Onni Benyamin

IGC Proceedings (1977-2023)

No abstract provided.

Respons Pertumbuhan Pakcoy Terhadap Asam Humat Dan Trichoderma Dalam Media Tanam Pelepah Kelapa Sawit, Ratih Rahhutami, Aline Sisi Handini, Dwi Astutik

Jurnal Kultivasi

Pemanfaatan limbah organik dari perkebunan sebagai media tanam pakcoy (Brassica chinensis L.) diharapkan dapat ditingkatkan dengan penggunaan pupuk organik serta pupuk hayati. Penelitian disusun menggunakan Rancangan Acak Kelompok (RAK) pola faktorial. Faktor pertama adalah dosis asam humat meliputi 1, 3, dan 5 g. Faktor kedua adalah dosis Trichoderma sp., meliputi 50, 100, dan 150 mL. Data yang diperoleh kemudian dianalisis ragam pada taraf nyata 5%. apabila terdapat pengaruh nyata, dilanjutkan dengan uji DMRT. Hasil penelitian menunjukkan bahwa aplikasi asam humat dan Trichoderma sp. memiliki pengaruh mandiri dan tidak terdapat interaksi. Dosis asam humat 3 g per tanaman menghasilkan jumlah daun, …

Respons Pertumbuhan Bibit Kelapa Sawit Terhadap Bioherbisida Saliara Di Pembibitan Awal, Vira Irma Sari, Apriandi Bintang Tambunan, Sylvia Madusari

Jurnal Kultivasi

Keberadaan gulma pada pembibitan kelapa sawit dapat menurunkan kualitas bibit. Pengendalian gulma di pembibitan awal harus dilakukan secara dengan tangan (hand weeding), karena bibit dapat mati akibat aplikasi herbisida. Aplikasi bioherbisida saliara (Lantana camara) pada bibit kelapa sawit (Elaeis guineensis Jacq.) dapat menjadi alternatif pengendalian gulma yang ramah lingkungan dan mengurangi tenaga kerja. Penelitian ini dilaksanakan di Kebun Percobaan 1 Politeknik CWE, pada November 2019 sampai Februari 2020. Percobaan disusun dalam Rancangan Acak Kelompok, dengan perlakuan: kontrol (tanpa aplikasi bioherbisida), Ekstrak Lantana camara 1%, 2%, dan 3%. Setiap perlakuan diulangi sebanyak tiga kali. Hasil penelitian menunjukkan bahwa Bioherbisida Lantana camara …

Returns From Purple Guinea (Panicum Maximum Td58) In Commercial Fodder Production Of Small Holder Farmers In Kalasin Province, Ratchaneevan Vorachinda

IGC Proceedings (1977-2023)

No abstract provided.

The Assessment Of Range Land Suitability From The Apiculture Aspect With Using Gis, Sh. Fadaee, Hossein Arzani, S. H. Kaboli

IGC Proceedings (1977-2023)

No abstract provided.