Agronomy and Crop Sciences Commons^™

Hasil Benih Empat Kultivar Kedelai Yang Ditanam Di Dataran Medium Dan Dataran Tinggi, Sumadi, Muhamad Kadapi, Anne Nuraini, Noladhi Wicaksana, Meddy Rachmadi, S Rodiah

Jurnal Kultivasi

Pertumbuhan dan hasil suatu tanaman merupakan hasil interaksi antara karakter genetik setiap kultivar dengan lingkungan tumbuhnya. Tujuan penelitian ini adalah menetapkan kultivar kedelai yang paling cocok ditanam pada musim hujan di dataran medium ( ± 753 m dpl) dan dataran tinggi ( ± 1200 m dpl). Penelitian merupakan percobaan lapangan dilaksanakan pada April sampai dengan Juli 2016. Percobaan dirancang dalam Rancangan Acak Kelompok sederhana yang menguji kultivar meliputi Anjasmoro, Argomulyo, Arjasari dan Grobogan yang diulang 5 (lima) kali. Hasil percobaan menunjukkan bahwa secara umum potensi hasil kedelai di dataran medium hasilnya lebih tingggi dibandingkan yang ditanam di dataran tinggi. Kultivar …

Respons Jagung (Zea Mays L.) Akibat Jarak Tanam Pada Sistem Tanam Legowo (2:1) Dan Berbagai Dosis Pupuk Nitrogen Pada Tanah Inceptisol Jatinangor, Agus Wahyudin, Yuyun Yuwariah, Fiky Yulianto Wicaksono, Reza Aed Galib Bajri

Jurnal Kultivasi

Di Indonesia jagung menjadi sumber karbohidrat kedua setelah padi. Selain sebagai sumber kebutuhan pangan jagung juga dapat digunakan sebagai sumber pakan ternak dan bahan baku industri.Penelitian ini bertujuan untuk mengamatiinteraksi sistem tanam legowo (2:1) dengan pupuk N yang menghasilkan pertum-buhan dan hasil terbaik pada tanaman jagung (Zea mays L.) Hibrida Pertiwi 3, di Jatinangor mulai bulan November 2016 sampai Maret 2017. Percobaan menggunakan Rancangan Acak Kelompok Pola Faktorial. Perlakuan terdiri dari dua faktor, masing-masing faktor terdiri dari tiga taraf dan diulang tiga kali. Faktor pertama adalah sistem tanam legowo (2:1) dengan menggunakan jarak tanam yang terdiri dari tiga taraf yaitu …

Pengaruh Pola Tanam Tumpangsari Jagung Dan Kedelai Terhadap Pertumbuhan Dan Hasil Jagung Hibrida Dan Evaluasi Tumpangsari Di Arjasari Kabupaten Bandung, Yuyun Yuwariah, Dedi Ruswandi, Aep Wawan Irwan

Jurnal Kultivasi

Jagung dan kedelai merupakan tanaman pangan terpenting setelah padi di Indonesia. Konsumsi jagung dan kedelai akan terus mengalami peningkatan setiap tahun dikarenakan pertambahan jumlah penduduk. Salah satu upaya untuk meningkatkan produksi tanaman dapat dilakukan dengan cara tumpangsari. Sistem tumpangsari merupakan sistem pertanaman dengan menanam dua atau lebih jenis tanaman secara serentak pada lahan yang sama dalam waktu satu tahun. Penelitian bertujuan untuk mengetahui genotip jagung hibrida yang terbaik ditumpangsarikan dengan kedelai. Percobaan dilaksanakan dari bulan Maret 2016 sampai bulan Agustus 2016 di Arjasari, Kabupaten Bandung dengan ketinggian tempat mencapai 960 m di atas permukaan laut. Rancangan yang digunakan dalam penelitian …

Respons Konduktansi Stomata Beberapa Genotipe Tebu Sebagai Parameter Toleransi Terhadap Stress Abiotik, Mochamad Arief Soleh, Ranu Manggala, Yudithia Maxiselly, Mira Ariyanti, Intan Ratna Dewi Anjarsari

Jurnal Kultivasi

Peningkatan produksi tebu saat ini akan terhambat dengan adanya fenomena pemanasan global yang disertai dengan perubahan iklim hingga mempengaruhi sebaran air hujan. Akibatnya musim hujan sering terjadi secara sporadis dan kurang dapat diprediksi. Di sisi lain kondisi lahan kebanjiran akibat genangan air berpotensi menyebabkan stress abiotik pada tanaman tebu yang secara langsung berpengaruh terhadap produktivitas tanaman. Salahsatu sifat fisiologis yang berkaitan erat dengan ketahanan stress abiotik adalah respons konduktansi stomata (gs) sebagai representatif proses metabolisme tanaman berupa fotosintesis. Beberapa varietas tebu ditanam dalam kondisi genangan air memperlihatkan perbedaan nilai gs dari 240 mmol H2O·m-2·s-1 untuk Kidang Kencana (KK) sebagai varietas …

Respons Pertumbuhan Dan Hasil Tanaman Hanjeli Batu (Coix Lacryma-Jobi L.) Akibat Pupuk Silika Cair Dan Paclobutrazol, Tati Nurmala, Agus Wahyudin, Ruminta

Jurnal Kultivasi

Hanjeli batu (Coix lacryma-jobi L.) merupakan salahsatu tanaman pangan alternatif yang memiliki banyak manfaat. Permasalahan utama tanaman ini adalah rendahnya produksi yang disebabkan oleh kurangnya ketersediaan unsur hara dan tinggi tanaman yang terlalu tinggi. Oleh karena itu dilakukan suatu upaya untuk meningkatkan pertumbuhan dan hasil hanjeli batu dengan pupuk silika cair dan paclobutrazol. Penelitian ini bertujuan untuk mengetahui interaksi konsentrasi pupuk silika cair dan konsentrasi paclobutrazol yang memberikan pengaruh terbaik untuk pertumbuhan dan hasil tanaman hanjeli batu (Coix lacryma-jobi L.).Percobaan dilaksanakan di Desa Pasigaran, Kecamatan Tanjungsari, Kabupaten Sumedang, pada November 2016 sampai Mei 2017. Percobaan menggunakan Rancangan Acak Kelompok (RAK) …

Aplikasi Chitosan Untuk Meningkatkan Hasil Benih Kentang G0 (Solanum Tuberosum L.) Kultivar Granola Pada Berbagai Jenis Media Tanam, Anne Nuraini, Jajang Sauman Hamdani, Erni Suminar, Dian Ardiansyah

Jurnal Kultivasi

Salah satu kendala dalam produksi kentang di Indonesia adalah rendahnya mutu benih yang digunakan. Untuk mengatasi hal tersebut penyediaan benih kentang dilakukan dengan kultur jaringan, dengan menghasilkan benih Go. Percobaan ini bertujuan untuk mengetahui efek aplikasi chitosan terhadap hasil benih kentang G0 kultivar Granola pada berbagain jenis media tanam. Percobaan dilaksanakan dari Februari 2012 sampai Mei 2012 di screen house Kebun Percobaan Ciparanje Faperta UNPAD, Jatinangor, dengan ketinggian tempat ±750 m dpl. Percobaan memakai Rancangan Petak Terbagi dengan tiga ulangan. Petak utama adalah komposisi media tanam terdiri dari empat taraf, yaitu tanah + sekam, tanah + sekam + pupuk kotoran …

Pengaruh Pemberian Urine Kelinci Dan Air Kelapa Terhadap Pertumbuhan Rimpang Dan Kandungan Minyak Atsiri Jahe Merah, Kusnadi, Inur Tivani

Jurnal Kultivasi

Bahan alami yang dapat digunakan sebagai sumber pemberian Zat Pengatur Tumbuh (ZPT) diantaranya adalah urine kelinci dan air kelapa. Pemberian urine kelinci, air kelapa dan kom-binasinya diharapkan dapat memberikan pengaruh terhadap pertumbuhan rimpang dan kandungan minyak atsiri jahe merah. Percobaan telah dilaksanakan pada bulan Maret sampai Oktober 2017 di Kebun Percobaan Prodi Farmasi Politeknik Harapan Bersama. Perlakuan yang digunakan adalah beberapa konsentrasi urine kelinci, air kelapa dan kombinasi urine kelinci dengan air kelapa. Rancangan percobaan yang digunakan adalah dengan Rancangan Acak Lengkap (RAL), terdapat 9 perlakuan yang diulang 3 kali. Perlakuan dengan urine kelinci terdiri dari 3 level, yaitu u0 …

Identifikasi Keragaman Genetik Plasma Nutfah Ubi Kayu Liar (Manihot Glaziovii Muell) Berdasarkan Karakter Morfo-Agronomi, Agung Karuniawan, Hendi N. Wicaksono, Debby Ustari, Tia Setiawati, T Supriatun

Jurnal Kultivasi

Plasma nutfah tanaman merupakan sumber bahan genetik bagi program pemuliaan tanaman. Penelitian ini bertujuan untuk mengidentifikasi keragaman genetik plasma nutfah ubi kayu liar berdasarkan karakter morpho-agronomy. Percobaan dilaksanakan pada bulan Desember 2014 hingga Juni 2015. Rancangan percobaan menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan 23 aksesi ubi kayu liar dan diulang sebanyak dua kali. Analisis komponen utama menghasilkan biplot dengan nilai PC1 dan PC2 yang memiliki kontribusi terbesar terhadap variasi yaitu masing-masing sebesar 27.98% dan 19.45%. Analisis klaster menghasilkan gambar dendogram terdiri dari dua klaster utama yaitu I dan II. Pada gambar dendogram terdapat jarak euclidean antara 0.00 hingga 3.32. …

Kompleksitas Pengaruh Temperatur Dan Kelembaban Tanah Terhadap Nilai Ph Tanah Di Perkebunan Jambu Biji Varietas Kristal (Psidium Guajava L.) Bumiaji, Kota Batu, Hidayati Karamina, W Fikrinda, Ariani Trisna Murti

Jurnal Kultivasi

Kawasan Bumiaji merupakan kawasan wisata yang berada di Kota Batu. Suhu rata-rata udara mencapai 20 oC menyebabkan Bumiaji menjadi kawasan yang cocok untuk tanaman hortikultura misalnya jambu biji varietas kristal. Tanaman jambu biji varietas kristal pada pemeliharaannya diberikan pupuk berupa pupuk organik maupun pupuk anorganik beserta beberapa pestida untuk menekan peledakan hama dan penyakit tanaman. Usaha-usaha peningkatan hasil produksi diatas ternyata dapat memberikan dampak kurang baik bagi lingkungan sekitar. Pupuk dan pestisida tersebut merupakan sumber pencemaran logam berat. Tujuan dari penelitian ini, yaitu untuk mengkaji bagaimana aspek-aspek seperti temperatu tanah dan kelembaban tanah mampu mempengaruhi nilai pH tanah di perkebunan …

Perbandingan Pengukuran Luas Daun Kedelai Dengan Metode Gravimetri, Regresi Dan Scanner, Aep Wawan Irwan, Fiky Yulianto Wicaksono

Jurnal Kultivasi

Luas daun merupakan salah satu parameter penting yang diperlukan untuk mengetahui pertumbuhan tanaman kedelai (Glycine max L.), oleh karena itu diperlukan teknik pengukuran yang cepat dan tepat. Dengan mengetahui luas daun, maka akan diketahui indeks luas daunnya dengan cara membaginya dengan luas kanopi tanaman. Selain pengukuran dengan menggunakan Leaf Area Meter, pengukuran dengan menggunakan metode dasar (gravimetri) masih sering dipergunakan. Penggunaan metode lainnya adalah dengan cara regresi dan penggunaan alat scanner, dimana metode tersebut mempunyai kelebihan dan kekurangannya masing-masing. Untuk pelaksanaan pengukuran luas daun kedelai ini digunakan tanaman kedelai kultivar Anjasmoro yang ditanam di polybag di Kebun Percobaan Hidroponik Fakultas …

Peran Konservasi Tanah Terhadap Cadangan Karbon Tanah, Bahan Organik, Dan Pertumbuhan Kelapa Sawit (Elaeis Guineensis Jacq.), Yenni Asbur, Mira Ariyanti

Jurnal Kultivasi

Penerapan konservasi tanah di perkebunan kelapa sawit dapat dilakukan secara vegetatif dan mekanik. Secara vegetatif dengan memanfaatkan tanaman yang banyak tumbuh di bawah tegakan kelapa sawit seperti Asystasia gangetica dan Nephrolepis biserrata sebagai tanaman penutup tanah, sedangkan secara mekanik dengan memotong panjang lereng melalui pembuatan teras gulud. Penelitian ini bertujuan mengetahui peran konservasi tanah terhadap cadangan karbon tanah, bahan organik, dan pertumbuhan kelapa sawit. Penelitian dilaksanakan dari Agustus 2014-April 2015 di perkebunan kelapa sawit (tahun tanam 2005) PTPN VII, Lampung Selatan. Penelitian menggunakan rancangan tersarang faktorial dengan enam ulangan tersarang di dalam perlakuan. Perlakuan terdiri dari teras gulud (tanpa teras …

Respon Pertumbuhan Bibit Nilam Aceh (Pogostemon Cablin Benth.) Klon Sidikalang Pada Media Tanam Subsoil Dengan Pemberian Pati Beras Dan Pupuk Hayati, Mira Ariyanti, Cucu Suherman, Intan Ratna Dewi Anjarsari, Dewi Santika

Jurnal Kultivasi

Media tanam berupa topsoil masih menjadi andalan untuk mendukung pertumbuhan tanaman nilam karena kandungan mineral dan bahan organiknya yang tinggi. Seiring dengan pemanfaatannya, ketersediaan topsoil semakin berkurang dan dirasa perlu untuk mencari alternatif lain yaitu dengan memanfaatkan subsoil. Peningkatan unsur hara dalam subsoil dilakukan dengan cara pemberian pupuk organik berupa pati beras dan pupuk hayati. Percobaan dilakukan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran Jatinangor pada Juni 2011- September 2011. Penelitian menggunakan rancangan acak kelompok terdiri dari 11 kombinasi perlakuan diulang tiga kali. Perlakuan percobaan meliputi top soil, sub soil + pupuk anorganik N 1.75 g, sub soil + 25 …

Economic Contribution Of The Agricultural Sector To The Arkansas Economy In 2015, Leah English, Jennie Popp, Wayne Miller

AAES Research Reports and Research Bulletins

Agriculture and associated agricultural activities are major contributors to the Arkansas economy. Agriculture is defined as the sum of agricultural production and processing activities, unless otherwise specified, and includes crop and animal production and processing, agricultural support industries, forestry and forest products, and textile goods. Agriculture contributes to the economy through direct agricultural production and value-added processing, and also leads to economic activity in other parts of the economy. This report is the tenth in a series of reports examining agriculture’s economic contribution to the Arkansas economy. The total economic contribution of agriculture (direct, indirect, and induced effects) on value …

Agronomic Management Practice Effects On Particulate Organic Matter And Infiltration In A Wheat-Soybean, Double-Crop System In Eastern Arkansas, Johan Desrochers

Graduate Theses and Dissertations

Improving the understanding of conventional and alternative management practices and their interactions on aggregate-derived particulate organic matter (POM) fractions and soil hydraulic properties, particularly infiltration, is instrumental to soil and groundwater management and long-term sustainability in the Lower Mississippi River Delta (LMRD) region of eastern Arkansas. The objective of this long-term wheat (Triticum aestivum L.)-soybean (Glycine max [L.] Merr.), double-crop (WSDC) field study in a silt-loam soil (Glossaquic Fraglossudalf) in the LMRD region of eastern Arkansas was to evaluate the effects of conventional and alternative management practices, including wheat-residue level, residue burning, tillage and irrigation, on i) POM fractions and …

Arkansas Soybean Performance Tests 2017, R. D. Bond, J. A. Still, D. G. Dombek

Arkansas Agricultural Experiment Station Research Series

Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/or marketing seed within the State, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.

Shallow Aggregate Ebb-And-Flow System For Greenhouse Lettuce Production, Joseph Chidiac

Graduate Theses and Dissertations

A novel soilless technique for the production of lettuce was developed and evaluated for its viability for ornamental greenhouse growers adapting their ebb-and-flood irrigation benching systems to diversify into growing lettuce, without having to purchase the conventional nutrient film technique (NFT) or deep flow technique (DFT) hydroponic systems. The experimental design was a three by four factorial, with three treatments for aggregate depth (19, 38, and 57 mm) and four treatments for irrigation frequency (once every 1, 2, 4, or 8 hours), for a total of twelve treatment combinations. Each treatment was replicated three times in a randomized complete block …

Experimental Simulation Of A Cross-Flow Rice Dryer, Sangeeta Mukhopadhyay

Graduate Theses and Dissertations

After harvest, rough rice is dried, then dehulled and typically milled before consumption. A broad objective of the “rice drying process”, which comprises drying and tempering, is to maximize the yield of “whole, intact milled kernels”, quantified by the “head rice yield” (HRY). Since rough rice is commonly dried using cross-flow (CF) dryers in the United States of America, the aim of this research was to assess the effect of drying and tempering treatments on milling yields when rice was dried in an experimentally-simulated CF drying column. First, because airflow rate was found to be the least-studied “drying variable”, its …

Efficacy Of Two Hortiled Fixtures, Jakob Johnson, Paul Kusuma, Bruce Bugbee

Controlled Environments

We tested the efficacy of the Full Spectrum and Red-Blue HORTILED TOP LED fixtures manufactured by PL Light. Both fixtures had an 80° light distribution.

The efficacy of the fixtures was measured using flat plane integration as described by Nelson and Bugbee (2014)¹ (see adjacent photo). The fixtures were suspended at 0.65 m above the floor in a 3 × 3 m room with flat black walls. The photosynthetic photon flux density (PPFD, μmol · m^-2 · s^-1) was measured with a recently calibrated quantum sensor (LI-COR model 190R). Measurements were made 2.5 cm apart near …

New Technologies For Evaluating Putting Green Surface Characteristics, Daniel Patrick O'Brien

Graduate Theses and Dissertations

Golf course putting greens require a high level of inputs predicated on timely, well informed decisions. Putting green quality is ultimately defined by performance of the turfgrass, and this performance encompasses both (i) the health and vitality of the turfgrass plants, and (ii) the ability of the turfgrass to exist as a playing surface, as it interacts with the golf ball. For golf course superintendents, accurately and efficiently assessing moisture levels and nutrient status are critical for guiding maintenance practices. This research sought to examine new ways for measuring each of these parameters, and compared them to ground-truth data and/or …

Evaluation Of Provisia Rice In Arkansas Rice Production Systems, Zachary Lancaster

Graduate Theses and Dissertations

With the continued evolution of herbicide resistance, it is becoming more difficult to achieve adequate weed control in Arkansas rice production systems. Thus, new technologies are needed to combat these troublesome weeds. A new non-GMO, herbicide-resistant rice type is under development that is resistant to quizalofop, an acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicide that will allow for selective grass weed control in rice. With the commercialization of this technology by 2018, research was conducted to determine the best fit for quizalofop-resistant rice in current production systems. Experiments included evaluation of off-target movement of quizalofop, determination of plant-back risk from quizalofop …

Evaluation Of Very-Long-Chain Fatty Acid-Inhibiting Herbicides In Arkansas Rice Production, John Ansley Godwin

Graduate Theses and Dissertations

Because of the evolution of herbicide-resistant weeds, such as barnyardgrass and red rice in rice, there is a need for alternative herbicide sites of action. Very-long-chain fatty acid (VLCFA)-inhibiting herbicides are not labeled for use in U.S. rice production; however, this site of action (SOA) has been used with success in Asian rice. The VLCFA-inhibiting herbicides pethoxamid, pyroxasulfone, acetochlor, and S-metolachlor were evaluated for rice tolerance and control of commonly problematic weeds in Arkansas rice at various rates and application timings. Pyroxasulfone and S-metolachlor were deemed unfit for use in rice production because of negative effects on rice visual injury, …

Characterization Of Multiple-Herbicide-Resistant Echinochloa Colona From Arkansas, Christopher Edward Rouse

Graduate Theses and Dissertations

Echinochloa species are highly adaptive weeds that have the potential to impact crops in a variety of environments. This has positioned them as the most problematic weeds in a number of USA cropping systems with some species having the distinction of the 'worst herbicide-resistant weeds' in the world. Recent evidence has positioned Echinochloa colona (junglerice) as the most dominant in Arkansas and throughout the Mid-South, USA, especially in rice (Oryza sativa L.) and soybean (Glycine max L.) production fields. A history of extensive herbicide-use for management and a lack of integrated or diverse approaches to management have led to rampant …

Evaluation Of Insecticide Seed Treatments To Protect Rice (Oryza Sativa) Against Various Herbicides, Steven Michael Martin

Graduate Theses and Dissertations

The increase in herbicide-resistant weeds in Arkansas crop fields has led to the need for new herbicide modes of action for use in all crops. This need has led to the introduction of technologies that can be devastating to conventional rice crops. Field observation, noted that insecticide seed treatments used in rice could potentially reduce the effects of off-target movement of herbicides onto rice crops and possibly reduce the negative effects of some herbicides applied directly to rice. Research was conducted to determine if insecticide seed treatments could reduce the harmful effects of drift from imazethapyr and glyphosate onto conventional …

The Effect Of Preflood Nitrogen And Flood Establishment Timing On Rice Development, Nitrogen Uptake And Grain Yield, Tyler Richmond

Graduate Theses and Dissertations

Urea-N fertilizer is typically applied at the 5-leaf stage to rice (Oryza sativa L.) grown in a dry-seeded, delayed-flood production system. How long the preflood-N can be delayed without adverse effects on yield potential is poorly understood. The research objective was to determine the effects of preflood-N application and flood establishment timing on aboveground-N content, 50% heading, yield components, and grain yield. Trials were established on silt loam soils at the Pine Tree Research Station (PTRS) and Rice Research and Extension Center (RREC) during 2015 and 2016. Urea-N was applied at 0, 45, 90, 135, and 180 kg N ha-1 …

Characterization Of Glyphosate-Resistant Amaranthus Palmeri (Palmer Amaranth) Tolerance To Als- And Hppd-Inhibiting Herbicides, Shilpa Singh

Graduate Theses and Dissertations

Palmer amaranth is a principal weed problem across the United States and is resistant to several herbicide modes of action. By 2008, Palmer amaranth in Arkansas was reported to be resistant to both ALS- and EPSPS-inhibitors, but the predominant resistance mechanisms are yet to be explored. Herbicide options with different modes of action are needed to provide effective Palmer amaranth control and HPPD-inhibitors (e.g. mesotrione) are among these. The goal of this research was to elucidate the resistance profile of Palmer amaranth in Arkansas to ALS herbicides and glyphosate (EPSPS-inhibitor) as well as evaluate the differential tolerance of Palmer amaranth …

Evaluating The Impact Of Two Contrasting Tillage Practices On Soil Properties In Central Kentucky, Emily Cook

Posters-at-the-Capitol

Farming practices such as no tillage and plowing can institute change on soil physical and chemical characteristics. In this research, the effects of long-term conventional and no-tillage systems on the selected soil properties were determined in a continuous corn system on a farm with Maury silt loam soil. These samples were taken from University of Kentucky's Research Farm (Spindletop Farm). The field used was tilled in 1969 from bluegrass sod and the first time research was conduced was in 1970. Each plot is 20 ft. by 40 ft. and for many years each plot was split with winter cover crop …

Investigating The Toxicity And Accumulation Of 2,4-Dichlorophenoxyacetic Acid (2,4-D) And Glyphosate In Eisenia Fetida, Caitlin Lazurick, Nicole Lidzbarski, Rachel Owings, Jeff Brotherton, Edna Steele

Journal of the South Carolina Academy of Science

Glyphosate, the main ingredient in Roundup^®, is the most widely used herbicide in the world. It is also used in combination with another effective herbicide, 2,4-D, in the formulation called Enlist Duo^®. The EPA approved the use of Enlist Duo^® on certain crops including those genetically modified to be resistant to both herbicides. The predicted significant increase in the use of these herbicides raised concerns from the general public because both compounds have been classified as possibly or probably carcinogenic. Since herbicides are applied directly to vegetation, the safety of organisms that come in contact …

Grains, Seeds And Hay Industry Funding Scheme Annual Report 2016/2017, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

The Grains, Seeds and Hay Industry Funding Scheme (IFS) has been operating since 2010 to address biosecurity threats relevant to Western Australia’s (WA) grains, seeds and hay industry. The Scheme was established under the Biosecurity and Agriculture Management Act 2007 to enable growers to identify the pest and disease priorities at a whole-of-industry level and raise funds for activities to address these priorities.

There are currently three Industry Funding Schemes in operation. In addition to the Grains, Seeds and Hay IFS, there is a Cattle IFS and a Sheep and Goat IFS. The three IFSs operate in a similar manner. …

Impact Of Automated Guidance For Mechanical Control Of Herbicide-Resistant Weeds In Corn, Terry Griffin, James M. Lowenberg-Deboer

Journal of Applied Farm Economics

This study evaluated the feasibility of reintroducing mechanical weed control as an alternative for herbicide-resistance weed infestations. The production practice tested included row cultivation with a separate banded spray application using high-accuracy automated guidance systems. A range of ground speeds were tested for the row cultivation operation, each with a different per acre cost and timeliness penalty. A typical eastern Corn Belt farm with a rotation of corn and soybean served as the base for the linear programming model. It was found that if the farmer was willing to reintroduce tillage, row cultivation conducted at higher operating speeds in conjunction …

Substantial Contribution Of Genetic Variation In The Expression Of Transcription Factors To Phenotypic Variation Revealed By Erd-Gwas, Hung-Ying Lin, Qiang Liu, Xiao Li, Jinliang Yang, Sanzhen Liu, Yinlian Huang, Michael J. Scanlon, Dan Nettleton, Patrick S. Schnable

Department of Agronomy and Horticulture: Faculty Publications

Background: There are significant limitations in existing methods for the genome-wide identification of genes whose expression patterns affect traits.

Results: The transcriptomes of five tissues from 27 genetically diverse maize inbred lines were deeply sequenced to identify genes exhibiting high and low levels of expression variation across tissues or genotypes. Transcription factors are enriched among genes with the most variation in expression across tissues, as well as among genes with higher-than-median levels of variation in expression across genotypes. In contrast, transcription factors are depleted among genes whose expression is either highly stable or highly variable across genotypes. We developed a …