Selecting corn hybrids for 2018: Some considerations

first_imgShare Facebook Twitter Google + LinkedIn Pinterest Hybrid selection is one of the most important management decisions a corn grower makes each year. It’s a decision that warrants a careful comparison of performance data. It should not be made in haste or based on limited data. Planting a marginal hybrid, or one not suitable for a particular production environment, imposes a ceiling on the yield potential of a field before it has been planted.In the Ohio Corn Performance Test (OCPT) it is not unusual for hybrid entries of similar maturity to differ in yield by 50 bushels per acre or more, depending on test site. Another consideration in hybrid selection which has received more attention recently as commodity prices have dropped are seed costs which increased an average of 11% per year from 2006 and 2014, much higher than the rates for fertilizers and pesticides. Since 2014, per acre seed costs have decreased slightly (USDA Economic Research Service), from $102 per acre in 2015 to $99 per acre in 2016, a decrease of $3 per acre.Growers should choose hybrids best suited to their farm operation. Corn acreage, previous crop, soil type, tillage practices, desired harvest moisture, and pest problems determine the relative importance of such traits as drydown, insect and disease resistance, herbicide resistance, early plant vigor, etc.End uses of corn should also be considered — is corn to be used for grain or silage? Is it to be sold directly to the elevator as shelled grain or used on the farm? Are there premiums available at nearby elevators, or from end users, for identity-preserved (IP) specialty corns such as food grade or non-GMO corn? Capacity to harvest, dry and store grain also needs consideration. The following are some tips to consider in choosing hybrids that are best suited to various production systems. 1. Select hybrids with maturity ratings appropriate for your geographic area or circumstances. Corn for grain should reach physiological maturity or “black layer” (maximum kernel dry weight) one to two weeks before the first killing frost in the fall. Grain drying can be a major cost in corn production. Use days-to-maturity, growing degree day (GDD) ratings, and harvest grain moisture data from performance trials to determine differences in hybrid maturity and drydown. One of the most effective strategies for spreading risk, and widening the harvest interval, is planting multiple hybrids of varying maturity. 2. Choose hybrids that have produced consistently high yields across a number of locations. Choosing a hybrid simply because it contains the most stacked transgenic traits, or possesses appealing cosmetic traits, like “flex” ears, will not ensure high yields; instead, look for yield consistency across environments. Hybrids will perform differently based on region, soils and environmental conditions. Growers should not rely solely on one hybrid characteristic, or transgenic traits, to make their product selection. Most of the hybrids available to Ohio growers contain transgenic insect and herbicide resistance. In the 2017 OCPT over 90% of the hybrids tested contained transgenic traits.  However, recent OCPTs reveal that some non-transgenic hybrid entries have yield potential comparable to the highest yielding stacked trait entries. Nevertheless, when planting fields where corn rootworm (RW), European corn borer (ECB) and Western Bean Cutworm (WBC) are likely to be problems (in the case of RW, continuous corn and in the case of ECB and WBC, late plantings), Bt traits offer outstanding protection and may mitigate the impact of other stress conditions. 3. Plant hybrids with good standability to minimize stalk lodging (stalk breakage below the ear). This is particularly important in areas where stalk rots are perennial problems, or where field drying is anticipated. There are hybrids that have outstanding yield potential, but may be more susceptible to lodging problems under certain environmental conditions after they reach harvest maturity. The potential for stalk lodging increases at higher plant populations (usually above 32,000 to 33,000 plants per acre) but many hybrids can tolerate higher final stands. Corn growers should consult with their seed dealer on hybrid sensitivity to stalk lodging, root lodging and greensnap (pre-tassel stalk brakeage caused by wind). Greensnap is relatively rare in Ohio but may cause major yield losses in some hybrids as the result of strong windstorms in late June and July. 4. Select hybrids with resistance and/or tolerance to the most common stalk rots, foliar diseases, and ear rots. These include northern corn leaf blight, gray leaf spot, Gibberella, Anthracnose and Diplodia stalk rots and Gibberella and Diplodia ear rots. More rust on corn was reported in 2017 than normal, including both common rust and southern rust. The latter is rarer but the more damaging of the two major rust diseases that affect corn in Ohio. Corn growers should obtain information from their seed dealer on hybrid reactions to specific diseases that have caused problems or that have occurred locally. 5.  Never purchase a hybrid without consulting performance data. Results of university/extension, company, and county replicated hybrid performance trials should be reviewed before purchasing hybrids. Because weather conditions are unpredictable, the most reliable way to select superior hybrids is to consider performance during the last year and the previous year over as wide a range of locations and climatic conditions as possible. Hybrids that consistently perform well across a range of environmental conditions, including different soil and weather conditions, have a much greater likelihood of performing well the next year, compared to hybrids that have exhibited more variable performance. To assess a hybrid’s yield averaged across multiple Ohio sites and years, consult the sortable “Combined Regional Summary of Hybrid Performance” tables available online http://www.oardc.ohio-state.edu/corntrials/regions.asp?year=2017&region=State.last_img read more

Jamaica 55 UK Steering Committee Launched

first_img The Jamaica 55 Diaspora Conference will be held July 23-26, 2017 at the Jamaica Conference Centre in downtown Kingston. This was announced at the launch of the Jamaica 55 UK Steering Committee by High Commissioner to the UK, His Excellency Seth George Ramocan. The Jamaican High Commission will host the joint UK launch of Jamaica 55 celebrations and the Jamaica 55 Diaspora Conference on Thursday, June 1, in London.This was announced at the launch of the Jamaica 55 UK Steering Committee by High Commissioner to the UK, His Excellency Seth George Ramocan.The Steering Committee, which will be co-chaired by Business Consultant and member of the Economic Growth Council (EGC) Taskforce, Rudi Page, and Events Planner, Janelle Raeburn, will coordinate activities, with the primary purpose of encouraging second-, third- and fourth-generation Jamaican-UK citizens to expand on the legacy built by their parents for the upliftment of the Jamaican-UK community and Jamaica.“I am truly delighted to launch this Steering Committee as we seek to further promote Jamaica in the UK, under the national theme ‘Celebrating Jamaicans at Home and Abroad’,” said High Commissioner Ramocan.He told participants, which included members of the various subcommittees, that “our mission is to heighten public awareness of the significant achievements of the Jamaican- UK community and its outstanding contribution to the United Kingdom. So, this year, we will celebrate, collaborate and elevate,” the High Commissioner said.The High Commission will also be working with the Jamaican community during the year, in relation to the organisation of a number of core and endorsed events that will showcase Jamaica’s rich cultural heritage and its influence in the UK.The subcommittees comprise Jamaicans of various backgrounds and experiences, some of whom are first- and second-generation Jamaicans.The Jamaica 55 Diaspora Conference will be held July 23-26, 2017 at the Jamaica Conference Centre in downtown Kingston. Story Highlights The Jamaican High Commission will host the joint UK launch of Jamaica 55 celebrations and the Jamaica 55 Diaspora Conference on Thursday, June 1, in London.last_img read more

Preview of Budget reveals salary hikes millions is saving with retired of

first_imgFacebook Twitter Google+LinkedInPinterestWhatsAppProvidenciales, 02 Mar 2016 – The PNP Administration is proposing to spend $252 million dollars in the running of the country for 2016/2017 and according to the Finance Minister, Hon Washington Misick there will be no new taxes this financial year. During House of Assembly meeting on Monday the Minister shared that the PNP Government is proposing to spend 4% more on recurrent expenditure and shared that earnings for TCIG is forecast to be $256 million. Based on these projections, the country will generate in the upcoming fiscal year a $4 million surplus. Hon Washington Misick reminded that the FSPS or the Financial Strategic and Policy Statement was tabled in the House since last December and on Monday, the Appropriation 2016-2017 Estimates was laid on the table. A whopping announcement came when the Finance Minister shared that in addition to the salary re-grade which resulted in significantly higher salaries for many in the civil service; another 2.5% increase in wages is planned for public workers. Pensioners will also get more money says Minister Misick, retired legislators will be getting more money. Non pensionable employees released in 2012 will get some remuneration; financial boost will come, said the Minister for crime fighting with 20 new recruits at a cost of $900,000; more money will go to indigents under social services. More money will go to environmental health and emergency services, an on the job productivity management team under the Ministry of Finance will be established and $1.5 million dollars has been allotted to give incentive to small business development, and an extra $250,000 is dedicated to the Center for Entrepreneurial Development. There is also a 19% reduction in non-recurrent expenditure according to the Minister, which he put at $8.8 million.“Mr. Speaker the significant reduction this is due to reduced debt service fees, as the $170 million bond has been retired.”The UK guarantee loan is now paid off, the House of Assembly wrapped up debate after 10pm on Monday night. TCI Premier blasts Opposition side for “slop” information, sets it straight in HOA Recommended for you Related Items:Financial Strategic and Policy Statement, house of assembly, washington misick Facebook Twitter Google+LinkedInPinterestWhatsApp Budget cuts hurt, but necessary says TCI Deputy Premier in parliamentary debate on hurricane funds Minister of Works puts government buildings reconstruction post hurricanes at $8.6mlast_img read more

Models show injecting aerosols into the atmosphere to prevent hurricanes possibly feasible

first_img(Phys.org)—An international team of Earth scientists has used eight Earth system model simulations of climate under the Geoengineering Model Intercomparison Project to predict the change in the number of hurricanes and other types of tropical storms that would occur over the next fifty years if sulfate aerosols were injected into the atmosphere to mitigate the impact of global warming. In their paper published in Proceedings of the National Academy of Sciences, the researchers describe the models and what they showed and suggest that such injections if done on a massive scale, might prove moderately effective—though they note that a different type of aerosol would have to be used to prevent harm to the ozone layer. As the planet keeps warming and efforts to reduce greenhouse gas emissions enough to make a difference fail, scientist have begun turning to other ways to mitigate problems in the future related to warmer temperatures and higher ocean levels, such as an increase in the number and intensity of hurricanes. One such technique that has been discussed in public forums, is injecting aerosols into the atmosphere in areas where tropical storms form—the shadowing effect would cool the air above the ocean preventing such storms from forming. In this new effort, the researchers used standard oceanographic models to attempt to learn whether such a technique might be viable.After inputting data meant to model an injection of sulfate aerosols over the next 50 years, in two different ways, the researchers found that the idea would likely work, but not as well as might be expected. The first modeled the impact of a volcano eruption-sized amount of aerosol injection while the second sought to mimic an increase in injection amounts to match the projected increase of greenhouse gas emissions. Because the second approach appeared to be the more likely outcome in real life, the researchers used that model to make their predictions. They found that if approximately 10 billion tons of such aerosols were pumped into the atmosphere annually, the result would be a halving of Katrina-sized hurricanes over the next half century. They equate it to mimicking a Pinatubo-sized eruption every two years—something they describe as very expensive, but doable.Of course, they note, there is no chance that such injections will begin anytime soon, because injecting that much sulfate aerosols into the atmosphere would destroy the ozone layer. But, their findings do suggest that if another, safer aerosol could be found, such a technique might prove viable. © 2015 Phys.org Hurricane Isabel (2003) as seen from orbit during Expedition 7 of the International Space Station. Credit: NASA Explore further Researchers find unintended consequences of geoengineering to slow climate changecenter_img Journal information: Proceedings of the National Academy of Sciences More information: John C. Moore et al. Atlantic hurricane surge response to geoengineering, Proceedings of the National Academy of Sciences (2015). DOI: 10.1073/pnas.1510530112AbstractDevastating floods due to Atlantic hurricanes are relatively rare events. However, the frequency of the most intense storms is likely to increase with rises in sea surface temperatures. Geoengineering by stratospheric sulfate aerosol injection cools the tropics relative to the polar regions, including the hurricane Main Development Region in the Atlantic, suggesting that geoengineering may mitigate hurricanes. We examine this hypothesis using eight earth system model simulations of climate under the Geoengineering Model Intercomparison Project (GeoMIP) G3 and G4 schemes that use stratospheric aerosols to reduce the radiative forcing under the Representative Concentration Pathway (RCP) 4.5 scenario. Global mean temperature increases are greatly ameliorated by geoengineering, and tropical temperature increases are at most half of those temperature increases in the RCP4.5. However, sulfate injection would have to double (to nearly 10 teragrams of SO2 per year) between 2020 and 2070 to balance the RCP4.5, approximately the equivalent of a 1991 Pinatubo eruption every 2 y, with consequent implications for stratospheric ozone. We project changes in storm frequencies using a temperature-dependent generalized extreme value statistical model calibrated by historical storm surges and observed temperatures since 1923. The number of storm surge events as big as the one caused by the 2005 Katrina hurricane are reduced by about 50% compared with no geoengineering, but this reduction is only marginally statistically significant. Nevertheless, when sea level rise differences in 2070 between the RCP4.5 and geoengineering are factored into coastal flood risk, we find that expected flood levels are reduced by about 40 cm for 5-y events and about halved for 50-y surges. Citation: Models show injecting aerosols into the atmosphere to prevent hurricanes possibly feasible (2015, October 27) retrieved 18 August 2019 from https://phys.org/news/2015-10-aerosols-atmosphere-hurricanes-possibly-feasible.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

Need at least another 3 months to conclude Narada probe CBI to

first_imgKolkata: The CBI told the Calcutta High Court on Friday that it needed at least another three months to conclude its probe in the Narada sting operation case. The agency filed a progress report in the investigation in the case before the court on Friday. After hearing the CBI counsel’s submissions, Justice Joymalyo Bagchi directed the central probe agency to file another report after six weeks, stating the progress made in the probe. CBI counsel Amajit De submitted that efforts were on to access the contents of an iPhone, which was allegedly used to carry out the sting operation and the agency would require at least another three months to conclude the probe. Also Read – Rain batters Kolkata, cripples normal lifeJustice Bagchi was hearing a petition filed by Trinamool Congress (TMC) MP Aparupa Poddar, seeking quashing of an FIR against her, claiming that she was not an elected representative when the alleged video was shot and as such the provisions of the Prevention of Corruption Act were not applicable against her. In the sting operation, which was claimed to have been carried out in 2014, some persons resembling senior TMC leaders are seen accepting money from the representatives of a fictitious company in return for favours. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe CBI had booked 12 top TMC leaders, including MPs and West Bengal ministers, and an IPS officer in connection with the case. An FIR was lodged for alleged criminal conspiracy under the provisions of the Prevention of Corruption Act dealing with bribery and criminal misconduct. The maximum sentence for these crimes ranges from five to seven years of imprisonment. Those against whom the CBI has registered the FIR include Mukul Roy, who is now in the BJP, and TMC Lok Sabha MPs Saugata Roy, Poddar, Prasun Banerjee and Kakoli Ghosh Dastidar. West Bengal ministers, including Firhad Hakim, Suvendu Adhikari, Sovan Chatterjee and Subrata Mukherjee, have also been named in the FIR. Former state minister Madan Mitra, MLA Iqbal Ahmed and IPS officer Saiyaad Mustafa Hussain Mirza have also been named as accused in the case. The sting operation was carried out by the editor of web portal Naradanews.com, Mathew Samuel, who claimed to have used an iPhone for the purpose. The contents of the phone were subsequently transferred to a laptop and stored in a pen drive.last_img read more

Announcing Wireshark 300

first_imgYesterday, Wireshark released its version 3.0.0 with new user interface improvements, bug fixes, new Npcap Windows Packet capturing driver and more. Wireshark, the open source and cross-platform network protocol analysis software is used by security analysts, experts and developers for analysis, troubleshooting, development, and other security-related tasks to capture and browse the packets traffic on computer networks. Features of Wireshark 3.0.0 The Windows .exe installers replaces WinPcap with Npcap. Npcap supports loopback capture and 802.11 WiFi monitor mode capture – only if supported by the NIC driver. The “Map-Button” of the Endpoint dialog that was erased since Wireshark Version 2.6.0 has been added in a modernized form. The macOS package ships with Qt 5.12.1 and the OS requires version 10.12 or later. Initial support has been provided for using PKCS #11 tokens for RSA decryption in TLS. Configure this at Preferences, RSA Keys. The new WireGuard dissector has decryption support and requires Libgcrypt 1.8 for the same. You can now copy coloring rules, IO graphs, filter Buttons and protocol preference tables from other profiles using a button in the corresponding configuration dialogs. Wireshark now supports Swedish, Ukrainian and Russian language. A new dfilter function string() has been added which allows the conversion of non-string fields to strings. This enables string functions to be used on them. The legacy (GTK+) user interface, the portaudio library are removed and no longer supported. Wireshark requires Qt 5.2 or later, GLib 2.32 or later, GnuTLS 3.2 or later as optional dependency. Building Wireshark requires Python 3.4 or a newer version. Data following a TCP ZeroWindowProbe is not passed to subdissectors and is marked as retransmission. Head over to Wireshark’s official blog for the entire list of upgraded features in this release. Read Next Using statistical tools in Wireshark for packet analysis [Tutorial]Wireshark for analyzing issues and malicious emails in POP, IMAP, and SMTP [Tutorial]Analyzing enterprise application behavior with Wireshark 2last_img read more