Earth Sciences Commons^™

Using Cover Crops To Recycle Nutrients In An Arkansas No-Till Corn System, Kelsey Lynn Hoegenauer

Graduate Theses and Dissertations

Cover crops can provide many benefits to cropping systems including erosion control, weed suppression, and increased soil organic matter. Regardless of the intended goal for using cover crops, the changes to the nutrient flux in a cropping system caused by cover crops retaining and recycling nutrients needs to be considered in order to maximize the productivity of the following commodity crops. This research encompassed complementary greenhouse, field, and laboratory experiments to evaluate nutrient uptake and release by tillage radish (Raphanus sativus) and cereal rye (Secale cereale) cover crops, as well as the subsequent early-season recovery of recycled nutrients by the …

Evaluating Soil Surface Properties In Two Contrasting Tillage Systems, Riley Mabe, Kaeden Mollett, Marcus Robertson

Scholars Week

Soil properties are affected by tillage practices. Tillage practices that provides an adequate growing environment for crops and maintains good soil structure is crucial. The objective of this study was to compare selected soil properties collected from no-till (NT) and conventional tillage (CT) systems in Kentucky, Indiana, and Illinois. Three undisturbed and three disturbed soil samples were taken from the topsoil at the depth of 0 to 7.5 cm. The samples were analyzed for bulk density (BD), water holding capacity (WHC), field capacity (FC), soil pH, soil organic matter (SOM), and compaction. Bulk density, WHC, and FC of the soil …

Chemical Amendments Of Dryland Saline–Sodic Soils Did Not Enhance Productivity And Soil Health In Fields Without Effective Drainage, Girma A. Birru, David E. Clay, Thomas M. Desutter, Cheryl L. Reese, Ann C. Kennedy, Sharon A. Clay, Stephanie A. Bruggeman, Rachel K. Owen, Douglas D. Malo

Agronomy, Horticulture and Plant Science Faculty Publications

A common restoration treatment for saline–sodic soils involves improving soil drainage, applying soil amendments (e.g., CaSO₄, CaCl₂, or elemental S), and leaching with water that has a relatively low electrical conductivity. However, due to high subsoil bulk densities and low drainable porosities, these treatments many not be effective in glaciated dryland systems. A 3-yr field study conducted in three model systems determined the impact of chemical amendments (none, CaCl₂, CaSO₄, and elemental S) on plant growth, microbial composition, temporal changes in electrical conductivity (EC_e ), and the relative sodium content (%Na). …

Wayne E. Sabbe Arkansas Soil Fertility Studies 2018, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.

A Theoretical Model Of Underground Dipole Antennas For Communications In Internet Of Underground Things, Abdul Salam, Mehmet C. Vuran, Xin Dong, Christos Argyropoulos, Suat Irmak

Computer Information Technology Faculty Publications

The realization of Internet of Underground Things (IOUT) relies on the establishment of reliable communication links, where the antenna becomes a major design component due to the significant impacts of soil. In this paper, a theoretical model is developed to capture the impacts of change of soil moisture on the return loss, resonant frequency, and bandwidth of a buried dipole antenna. Experiments are conducted in silty clay loam, sandy, and silt loam soil, to characterize the effects of soil, in an indoor testbed and field testbeds. It is shown that at subsurface burial depths (0.1-0.4m), change in soil moisture impacts …

2018 Long-Term Summary Of Kentucky Forage Variety Trials, Gene L. Olson, S. Ray Smith, Jimmy C. Henning, Christopher D. Teutsch

Forage Symposium at the Kentucky Cattlemen’s Convention

Forage crops occupy approximately 7 million acres in Kentucky. Forages provide a majority of the nutrition for beef, dairy, horse, goat, sheep, and wildlife in the state. In addition, forage crops play an environmentally friendly role in soil conservation, water quality, and air quality. There are over 60 forage species adapted to the climate and soil conditions of Kentucky. Only 10 to 12 of these species occupy the majority of the acreage, but within these species there is a tremendous variation in varieties.

This publication was developed to provide a user-friendly guide to choosing the best variety for producers based …

Isolation And Identification Of Potential Bioinoculants Based On Phosphate Solubilizing And Plant Growth Promoting Benefits, Rachel Raths

Electronic Theses and Dissertations

Conservative models have shown that as populations rise, food production needs to double by 2050. Population increase and the green revolution have caused fertilizer inputs to increase since the 1960’s, increasing environmental issues and production costs. These intensive practices have led to degraded arable land and there has been an increase in urbanization meaning we need to make best use of the farming land that is available and ensure it is sustainable for future food production. Due to this, there has been a higher demand for research on more environmentally and economically friendly approaches to food production. Plant growth promoting …

Brassica Carinata Growth And Yield Response To Nitrogen And Sulfur Fertilizers And Impacts On Selected Soil Parameters And Ghg Fluxes, Dwarika Bhattarai

Electronic Theses and Dissertations

Carinata (Brassica carinata A. Braun), a non-food oilseed crop and an alternative bio-jet fuel feedstock, has received attention for its potential as a low-input option for production in the semi-arid regions of the Northern Great Plains of USA. The crop has a lower N fertilizer requirement as compared to the other oilseeds, suggesting less negative impact on soils and GHGs emissions. Carinata is a new crop to South Dakota (SD), thus, the best management practices have yet to be developed. In addition, no sufficient research to address the impact of growing carinata on soils and GHG emissions has been …

Pengaruh Cara Pemberian Pupuk Organik Cair Vinasse Terhadap Pertumbuhan Awal Bawang Dayak (Eleutherine Palmifolia), Rina Ekawati, Lestari Hetalesi Saputri

Jurnal Kultivasi

Pupuk organik bermanfaat untuk meningkatkan kandungan hara, bahan organik tanah, serta memperbaiki sifat fisik, kimia, dan biologi tanah. Vinasse merupakan limbah dari proses pembuatan bioetanol pada industri pengolahan gula, jika telah mengalami proses pengomposan dapat digunakan sebagai pupuk organik cair (POC) vinasse yang dapat meningkatkan pertumbuhan tanaman. Bawang dayak merupakan salah satu tanaman hortikultura yang dapat dijadikan sebagai tanaman berkhasiat obat. Penelitian ini bertujuan untuk mempelajari pengaruh cara pemberian pupuk organik cair vinasse terhadap pertumbuhan awal tanaman bawang dayak. Percobaan ini dilakukan di Politeknik Lembaga Pendidikan Perkebunan (LPP) Yogyakarta, dari bulan Juli hingga November 2018. Penelitian ini menggunakan rancangan acak …

Pengaruh Pupuk Hayati Majemuk Dan Pupuk Fosfor Terhadap Pertumbuhan Dan Hasil Kedelai Di Inceptisol Jatinangor, Aep Wawan Irwan, Tati Nurmala

Jurnal Kultivasi

Kedelai merupakan salah satu tanaman yang membutuhkan fosfor dalam jumlah besar. Ketersediaan P merupakan faktor pembatas utama pada pertumbuhan dan produksinya. Fosfor tidak banyak tersedia untuk tanaman, sehingga dibutuhkan pupuk hayati yang mengandung mikroorganisme untuk dapat melarutkan fosfor. Penelitian ini bertujuan untuk memperoleh dosis pupuk hayati majemuk dan pupuk P yang efektif dan dapat memberikan pengaruh terbaik terhadap pertumbuhan, komponen hasil, dan hasil tanaman kedelai kultivar Anjasmoro. Penelitian dilakukan pada bulan Maret sampai Juni 2017 di Kebun Percobaan Ciparanje, Fakultas Pertanian Universitas Padjadjaran, dengan ketinggian tempat yaitu ± 780 mdpl. Percobaan dilakukan dengan menggunakan Rancangan Acak Kelompok terdiri dari 9 …

Pertumbuhan Bibit Kelapa Sawit (Elaeis Guineensis Jacq.) Dengan Pemberian Kompos Blotong Disertai Dengan Frekuensi Penyiraman Yang Berbeda Di Pembibitan Utama, Mira Ariyanti, Santi Rosniawaty, Hana Alfianita Utami

Jurnal Kultivasi

Blotong merupakan salah satu bentuk limbah di pabrik gula yang memiliki nilai manfaat untuk diterapkan sebagai pupuk organik. Pada blotong terkandung beberapa unsur hara yang bermanfaat bagi tanaman yaitu unsur 1.51% N, 5.63% P2O5, 0.26% K2O dan 32.38% C-organik. Selain itu pemanfaatan blotong sebagai pupuk organik diharapkan mengurangi penggunaan pupuk anorganik dimana penggunaan yang berlebihan dalam jangka waktu yang lama secara terus menerus akan menyebabkan tanah tidak sehat karena mengerasnya lapisan tanah. Tujuan percobaan ini adalah mengkaji pertumbuhan bibit kelapa sawit dengan pemberian kompos blotong yang dikombinasikan dengan frekuensi penyiraman yang berbeda. Percobaan dilakukan mulai Desember 2017 sampai dengan April …

Peningkatan Produktivitas Tanaman Kedelai Kultivar Anjasmoro Asal Benih Terdeteriorasi Dengan Kompos Trichoderma Dan Bokashi, Sumadi, Denny Sobardini Sobarna, Pujawati Suryatmana, Meddy Rachmadi, Erni Suminar

Jurnal Kultivasi

Trichoderma spp merupakan golongan fungi yang bersifat antipatogen, khususnya layu kecambah, sedangkan bokashi merupakan kompos yang diperkaya dengan beberapa mikroba yang bermanfaat bagi pertumbuhan tanaman.Tulisan ini merupakan rangkuman penelitian pot menggunakan kompos Trichoderma spp sebagai pelapis benih terdeteriorasi disertai bokashi kotoran hewan yang dilakukan pada tanah lahan kering dan tanah sawah pada tahun 2014 dan 2017. Percobaan pertama membandingkan efektivitas beberapa agen hayati sebagai pelapis benih pengaruhnya terhadap vigor benih dan hasil tanaman. Hasil percobaan menunjukkan penggunaan kompos Trichoderma hasilnya lebih baik dibandingkan agen hayati lainnya. Hasil percobaan selanjutnya menunjukkan bahwa pelapisan benih dengan 1 sampai 3 g kompos Trichoderma …

Respon Pertumbuhan Dan Hasil Tanaman Hanjeli Pada Panen Awal Akibat Pemberian Dosis Pupuk Biosilika Dan Paklobutrazol Di Lahan Kering Jatinangor, Ruminta, Tati Nurmala, Yuyun Yuwariah, Nita Yuliani Pratiwi

Jurnal Kultivasi

Hanjeli (Coix lacryma-jobiL) merupakan salah satu tanaman pangan alternatif dan tanaman fungsional. Hanjeli belum sepenuhnya dimanfaatkan petani salah satunya karena tanaman yang cukup tinggi dan memiliki umur cukup lama. Penelitian ini bertujuan untuk mengetahui dosis pupuk biosilika dan konsentrasi paklobutrazol yang dapat memberikan pengaruh terbaik terhadap pertumbuhan dan hasil tanaman hanjeli pulut dipanen awal (matang kuning). Penelitian dilaksanakan bulan Agustus 2017-Januari 2018 di Ciparanje, Universitas Padjadjaran, Jatinangor, Sumedang. Rancangan percobaan yang digunakan adalah rancangan petak terbagi yang terdiri dari petak utama pupuk biosilika dengan dosis 0 kg/ha; 100 kg/ha; 200 kg/ha dan anak petak paklobutrazol dengan konsentrasi 0 ppm; 1250 …

Evaluation Of Soybean Maturity Group And Planting Date In A Soybean-Rice Rotation On Overall Crop Productivity, Carrie Ortel

Graduate Theses and Dissertations

Little is known about the effects of soybean (Glycine max L.) management techniques on soil-nitrogen (N) credit development and its impact on the subsequent rice (Oryza sativa L.) crop’s success. This study was conducted to determine how soybean maturity group (MG) and planting date effect overall soybean productivity and its influence on the following rice crop. Various soybean planting dates (optimum and late) and MGs (3.5, 4.7, 5.4, and 5.6) were grown and followed in rotation with a rice crop. Six rates of pre-flood fertilizer-N (0, 44, 89, 134, 179, 224 kg N ha-1) were applied to the rice crop. …

Growth, Yield Performance And Quality Parameters Of Three Early Flowering Chia (Salvia Hispanica L.) Genotypes Cultivated In Southwestern Germany, Samantha J. Grimes, Timothy D. Phillips, Volker Hahn, Filippo Capezzone, Simone Graeff-Hönninger

Plant and Soil Sciences Faculty Publications

The combination of consumer’s ongoing demand for chia (Salvia hispanica L.) alongside the increased demand for regionally produced food products provided the impetus for this study. Its aim was to test if a regional cultivation of new chia genotypes, which were adapted to day lengths greater than 12 h, is feasible under Central European conditions. Therefore, three early flowering chia genotypes (Sahi Alba 914, W13.1, G8) were cultivated in a randomized block design at two experimental stations in Southwestern Germany (Ihinger Hof, Eckartsweier) over the course of two years (2015, 2016). Mean yields ranged from 100 to 1290 kg …

Biomass Production Of Herbaceous Energy Crops In The United States: Field Trial Results And Yield Potential Maps From The Multiyear Regional Feedstock Partnership, Do Kyoung Lee, Ezra Aberle, Erik K. Anderson, William Anderson, Brian S. Baldwin, David Baltensperger, Michael Barrett, Jürg Blumenthal, Stacy Bonos, Joe Bouton, David I. Bransby, Charlie Brummer, Pane S. Burks, Chengci Chen, Christopher Daly, Josh Egenolf, Rodney L. Farris, John H. Fike, Roch Gaussoin, John R. Gill, Kenneth Gravois, Michael D. Halbleib, Anna Hale, Wayne Hanna, Keith Harmoney, Emily A. Heaton, Ron W. Heiniger, Lindsey Hoffman, Chang O. Hong, Gopal Kakani, David Williams, Linda Williams

Plant and Soil Sciences Faculty Publications

Current knowledge of yield potential and best agronomic management practices for perennial bioenergy grasses is primarily derived from small‐scale and short‐term studies, yet these studies inform policy at the national scale. In an effort to learn more about how bioenergy grasses perform across multiple locations and years, the U.S. Department of Energy (US DOE)/Sun Grant Initiative Regional Feedstock Partnership was initiated in 2008. The objectives of the Feedstock Partnership were to (1) provide a wide range of information for feedstock selection (species choice) and management practice options for a variety of regions and (2) develop national maps of potential feedstock …

Phosphorus And Potassium Fertilizer Application Strategies In Corn–Soybean Rotations, Timothy J. Boring, Kurt D. Thelen, James E. Board, Jason L. De Bruin, Chad D. Lee, Seth L. Naeve, William J. Ross, Wade A. Kent, Landon L. Ries

Plant and Soil Sciences Faculty Publications

To determine if current university fertilizer rate and timing recommendations pose a limitation to high-yield corn (Zea mays subsp. mays) and soybean (Glycine max) production, this study compared annual Phosphorous (P) and Potassium (K) fertilizer applications to biennial fertilizer applications, applied at 1× and 2× recommended rates in corn–soybean rotations located in Minnesota (MN), Iowa (IA), Michigan (MI), Arkansas (AR), and Louisiana (LA). At locations with either soil test P or K in the sub-optimal range, corn grain yield was significantly increased with fertilizer application at five of sixteen site years, while soybean seed yield was significantly …

Pengaruh Pupuk Hayati Dan Pengapuran Terhadap Produktivitas Kedelai Di Tanah Inceptisol Jatinangor, Aep Wawan Irwan, Tati Nurmala

Jurnal Kultivasi

Kedelai merupakan tanaman pangan dengan kandungan protein tinggi sebagai bahan baku utama berbagai makanan, sehingga kebutuhan kedelai di Indonesia selalu tinggi. Hasil kedelai dapat ditingkatkan melalui aplikasi pupuk hayati dan pengapuran. Penelitian ini dilaksanakan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran, Jatinangor, Sumedang pada ordo tanah Inseptisol. Penelitian dilakukan dari Maret 2017 sampai Juni 2017. Rancangan percobaannya adalah Rancangan Acak Kelompok, terdiri dari sembilan perlakuan, yaitu tanpa pupuk hayati dan tanpa pengapuran (kontrol); pupuk hayati 5 liter/ha + tanpa pengapuran; pupuk hayati 8 liter/ha + tanpa pengapuran; tanpa pupuk hayati + pengapuran 140 kg/ha; pupuk hayati 5 liter/ha + pengapuran …

Pemanfaatan Beberapa Jenis Urin Ternak Sebagai Pupuk Organik Cair Dengan Konsentrasi Yang Berbeda Pada Tanaman Kelapa Sawit (Elaeis Guineensis Jacq.) Di Pembibitan Utama, Bisri Alvi, Mira Ariyanti, Yudithia Maxiselly

Jurnal Kultivasi

Pembibitan merupakan tahapan awal dalam budidaya tanaman kelapa sawit, kualitas bibit akan mempengaruhi hasil yang akan diperoleh nantinya. Faktor yang mempengaruhi pertumbuhan bibit diantaranya adalah ketersediaan unsur hara yang dapat diperoleh dari pemberian pupuk anorganik dan organik. Pemberian pupuk anorganik tanpa diimbangi pupuk organik dapat merusak sifat tanah, sehingga diperlukan pupuk organik yaitu dengan memanfaatkan urin ternak sebagai pupuk organik cair, dengan menambahkan pupuk organik cair pada tanah, maka dapat membantu proses pertumbuhan tanaman karena pupuk organik cair urin ternak mengandung hormon pertumbuhan bagi tanaman serta mudah diserap tanaman. Penelitian dilakukan di Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran, Kabupaten …

Influence Of Cover Crop Species On Soil Physical Properties In A Corn-Soybean Rotation, Addison D. Jacobs

Student Theses and Dissertations

As crop land decreases and population increases, soil quality is becoming a concern. Utilizing cover crops in cropping systems could improve soil quality. This study examined 16 treatments of single-species cover crops, cover crop mixes, and two control treatments on a silt-loam soil, in a corn (Zea mays L.) - soybean (Glycine max L. Merr.) crop rotation under no-tillage, to determine their effect on soil physical properties. Cover crop biomass differed (p<0.10) among treatments and produced a maximum of 15.6 Mg ha-1 of biomass in the crimson clover treatment. Water infiltration rates increased as much as 282% in the complete-mix treatment compared to the fallow control. Differences in infiltration rates due to cover crop species were shown in two-years. However, these results suggest that it may take more time for cover crops to affect change in bulk density and aggregate stability.

The Effect Of Two Different Harvesting Methods On The Yield Of 'Topbunch' And 'Hi-Crop' Collards (Brassica Oleracea (L)) When Grown In A Wiregrass Tunnel House, Veronica E. Walton, Raymon Shange, Melissa Johnson, Edward Sparks, Victor Khan, James E. Currington, Ramble Ankumah, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore

Professional Agricultural Workers Journal

A study was conducted to determine if 100% or 50% harvesting of collard leaves was a suitable recommendation for Tunnel House producers. The experiment was conducted as a split-split plot design with varieties as the main plots, harvesting 100% or 50% of leaves as the sub-plots, and days after transplanting as the subplots. All treatments were replicated three times, drip irrigated, and fertilized according to soil test recommendations. The results showed significant interactions between varieties and method of harvest, for leaf numbers and weight. Conversely, the varieties showed significant differences for yield but not leaf numbers. Both varieties showed significant …

Managing Herbicide Resistance: Listening To The Perspectives Of Practitioners. Procedures For Conducting Listening Sessions And An Evaluation Of The Process, Jill Schroeder, Michael Barrett, David R. Shaw, Amy B. Asmus, Harold Coble, David Ervin, Raymond A. Jussaume Jr., Micheal D. K. Owen, Ian Burke, Cody F. Creech, A. Stanley Culpepper, William S. Curran, Darrin M. Dodds, Todd A. Gaines, Jeffrey L. Gunsolus, Bradley D. Hanson, Prashant Jha, Annie E. Klodd, Andrew R. Kniss, Ramon G. Leon, Sandra Mcdonald, Don W. Morishita, Brian J. Schutte, Christy L. Sprague, Phillip W. Stahlman, Larry E. Steckel, Mark J. Vangessel

Plant and Soil Sciences Faculty Publications

Seven half-day regional listening sessions were held between December 2016 and April 2017 with groups of diverse stakeholders on the issues and potential solutions for herbicide-resistance management. The objective of the listening sessions was to connect with stakeholders and hear their challenges and recommendations for addressing herbicide resistance. The coordinating team hired Strategic Conservation Solutions, LLC, to facilitate all the sessions. They and the coordinating team used in-person meetings, teleconferences, and email to communicate and coordinate the activities leading up to each regional listening session. The agenda was the same across all sessions and included small-group discussions followed by reporting …

Plant And Microbial Responses To Repeated Cu(Oh)2 Nanopesticide Exposures Under Different Fertilization Levels In An Agro-Ecosystem, Marie Simonin, Benjamin P. Colman, Weiyi Tang, Jonathan D. Judy, Steven M. Anderson, Christina M. Bergemann, Jennifer D. Rocca, Jason M. Unrine, Nicolas Cassar, Emily S. Bernhardt

Plant and Soil Sciences Faculty Publications

The environmental fate and potential impacts of nanopesticides on agroecosystems under realistic agricultural conditions are poorly understood. As a result, the benefits and risks of these novel formulations compared to the conventional products are currently unclear. Here, we examined the effects of repeated realistic exposures of the Cu(OH)₂ nanopesticide, Kocide 3000, on simulated agricultural pastureland in an outdoor mesocosm experiment over 1 year. The Kocide applications were performed alongside three different mineral fertilization levels (Ambient, Low, and High) to assess the environmental impacts of this nanopesticide under low-input or conventional farming scenarios. The effects of Kocide over time were …

Radical Social Ecology As Deep Pragmatism: A Call To The Abolition Of Systemic Dissonance And The Minimization Of Entropic Chaos, Arielle Brender

Student Theses 2015-Present

This paper aims to shed light on the dissonance caused by the superimposition of Dominant Human Systems on Natural Systems. I highlight the synthetic nature of Dominant Human Systems as egoic and linguistic phenomenon manufactured by a mere portion of the human population, which renders them inherently oppressive unto peoples and landscapes whose wisdom were barred from the design process. In pursuing a radical pragmatic approach to mending the simultaneous oppression and destruction of the human being and the earth, I highlight the necessity of minimizing entropic chaos caused by excess energy expenditure, an essential feature of systems that aim …

Gwas For Fusarium Head Blight Related Traits In Winter Wheat (Triticum Aestivum L.) In An Artificially Warmed Treatment, Elisane W. Tessmann, David A. Van Sanford

Plant and Soil Sciences Faculty Publications

Global temperature increases will affect Fusarium head blight (FHB) levels in wheat (Triticum aestivum L.). A pressing question is whether current sources of resistance will be effective in a warmer environment. We evaluated phenotypic response to disease in 238 soft winter wheat breeding lines and cultivars grown in 2015–2016 and 2016–2017 under control and warmed (+3 °C) conditions. Warming was achieved with heating cables buried 3 cm in the rhizosphere. We measured heading date, plant height, yield, FHB rating, Fusarium damaged kernels (FDK), deoxynivalenol (DON), leaf blotch rating, powdery mildew rating and leaf rust rating. There were significant ( …

Soil Properties That Influence The Occurrence Of Hydrogen Sulfide Toxicity In Rice Fields, Julia Marie Fryer

Graduate Theses and Dissertations

Rice (Oryza sativa L.) producers face many challenges throughout each growing season. Hydrogen sulfide (H2S) toxicity is a physiological disorder where sulfate (SO42-) is excessively reduced to the toxic gas, H2S. This can reduce yield and, in severe cases, result in crop death. The main research objectives were to: i) understand chemical and physical characteristics in soils prone to H2S toxicity, ii) determine influential soil characteristics on the incidence of H2S toxicity, iii) determine ammonium sulfate ((NH4)2SO4) fertilizer additions influence on H2S toxicity, and iv) predict when and where H2S will occur. Three greenhouse experiments were conducted using Arkansas field …

Nitrous Oxide Emissions From Rice Production On A Silt-Loam Soil In Arkansas, Casey Rector

Graduate Theses and Dissertations

Rice (Oryza sativa L.) is a common crop grown in Arkansas under flooded-soil conditions. The saturated to nearly saturated soil makes rice production an ideal environment for the production of potent greenhouse gases, such as nitrous oxide (N2O). The objectives of this study were to i) evaluate the impact of water management practice (full-season-flood and intermittent-flood) and cultivar (pure-line and hybrid) on N2O fluxes, season-long N2O emissions, and global warming potential (GWP; 2016) and ii) evaluate the impact of tillage practice [conventional tillage and no-tillage (NT)] and type of urea fertilizer [ N-(n-butyl) thiosphosphoric triamide (NBPT)-coated and non-coated urea] on …

Preferensi Petani Terhadap Keragaan Padi (Oryza Sativa) Unggul Untuk Lahan Sawah Di Wilayah Pangandaran Dan Cilacap, Muhammad Khais Prayoga, Neni Rostini, Mieke Rochimi Setiawati, Tualar Simarmata, Silke Stoeber, Kustiwa Adinata

Jurnal Kultivasi

The object that conducted in this study is farmer's preferences of rice plant charac-teristics. This study was taken in 3 villages which are village Ciganjeng, village Pamotan, and village Rawaapu. The method used in this study was quantitative design with descriptive analysis. The respondents were 64 rice plant farmers. Measuring instrument used was questionnaire and interview. The result of this study showed that farmers has its own preference for the character of rice plants. Conclution of this study is farmers preferred rice plants which has an average height of plants, wide leaves, leave's surface, leave's angle, and rice straw's type; …

Do Precision Chemical Amendment Applications Impact Sodium Movement In Dryland Semiarid Saline Sodic Soils?, Tulsi P. Kharel, David E. Clay, Cheryl Reese, Thomas Desutter, Doug D. Malo, Sharon Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Expanding sodicity and salinity problems have placed many northern Great Plains (NGP) soils at the sustainability tipping point. This study assessed the impact of chemical restoration on water and salt transport in undisturbed soil columns collected from three hillslope model landscape positions. The backslope (Redfield), footslope (White Lake), and toeslope (Pierpont) soils had moderate (3.27 ± 0.59), high (7.3 ± 3.34), and very high (13.29 ± 3.2) sodium adsorption ratio (SAR_e) values, respectively. The soils were treated with KBr and one of four soil amendments (none, H₂SO₄, CaSO₄, and CaCl₂). …

Wayne E. Sabbe Arkansas Soil Fertility Studies 2017, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.