Navigation Links
Modern hybrid corn makes better use of nitrogen, study shows
Date:4/30/2012

WEST LAFAYETTE, Ind. - Today's hybrid corn varieties more efficiently use nitrogen to create more grain, according to 72 years of public-sector research data reviewed by Purdue University researchers.

Tony Vyn, a professor of agronomy, and doctoral student Ignacio Ciampitti looked at nitrogen use studies for corn from two periods -- 1940-1990 and 1991-2011. They wanted to see whether increased yields were due to better nitrogen efficiency or whether new plants were simply given additional nitrogen to produce more grain.

"Corn production often faces the criticism from society that yields are only going up because of an increased dependency on nitrogen," said Vyn, whose findings were published in the early online version of the journal Field Crops Research. "Although modern hybrids take up more total nitrogen per acre during the growing season than they did before, the amount of grain produced per pound of nitrogen accumulated in corn plants is substantially greater than it was for corn hybrids of earlier decades. So, in that sense, the efficiency of nitrogen utilization has gradually improved."

Vyn and Ciampitti's analysis covered about 100 worldwide studies. Of those, 870 data points were taken from the earlier period through 1990, and 2,074 points were taken from studies after 1990, when transgenic hybrids started hitting the market. All studies involved analyses of total nitrogen uptake and grain yield by corn plants at maturity, usually in response to multiple nitrogen application rates.

Grain yields in these research studies averaged about 143 bushels of corn per acre over the last 21 years compared with an average of 115 bushels in the previous 50 years. Those studies showed that in the earlier period, one pound of nitrogen applied to a field produced about 49 kilograms of grain. In the more recent period, the same amount of nitrogen produced about 56 kilograms of grain.

About 90 percent of the corn dat
'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Crime and punishment: The neurobiological roots of modern justice
2. Has modern science become dysfunctional?
3. Ancient whale species sheds new light on its modern relatives
4. Modern Mobility Aids, Inc. Announces a Revised Agreement for the Acquisition of Lumigene
5. European Neandertals were on the verge of extinction even before the arrival of modern humans
6. Modern genetics answers age-old question on Garrods fourth inborn error of metabolism
7. Invasion of genomic parasites triggered modern mammalian pregnancy
8. Evolutions past is modern humans present
9. Researchers discover oldest evidence of nails in modern primates
10. Modern fish communities live fast and die young
11. Modern EU agriculture jeopardizes biodiversity in new member states
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/29/2015)... DUBLIN , June 24, 2015 ... the addition of the "Latin America Biomedical Sensors ... to their offering. The Latin America Biomedical ... at a CAGR of 2.04% over the period 2014-2020 ... that are adaptable to the genetic formulation of each ...
(Date:6/24/2015)... , June 24, 2015 The biologics safety ... major drivers for the market include growth of the ... new drug launches. Over the years, the number of ... 2001 and 2010, the FDA approved 225 drug applications ... WIPO, Europe accounted for 3,822 ...
(Date:6/23/2015)... , June 23, 2015   MedNet Solutions ... supports the entire spectrum of clinical research, is ... ™ , the company,s intuitive, flexible and ... a Silver 2015 Stevie® Award by the ... & Services Website category.  The American Business Awards ...
Breaking Biology News(10 mins):Latin America Biomedical Sensors Market Report 2015-2020 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2
... up efforts to cut waste, reduce energy use and ... the number of planet-friendly standards and regulations also is ... of options for "going green." National Institute of Standards ... help organizations of all types sort through the welter ...
... Exotic bacteria that do not rely on oxygen may have ... early atmosphere, according to a theory that UChicago researcher Albert ... volcanic crater in Siberia. He has found that bacteria ... a surprising twist that scientists must take into account as ...
... American Chemical Society (ACS) today released a new episode ... podcast series showcasing a discovery that could mean greener ... used to make everything from paint to diapers. ... new way to make acrylic acid, a key industrial ...
Cached Biology News:NIST prototypes framework for evaluating sustainability standards 2Cold case: Siberian hot springs reveal ancient ecology 2Cold case: Siberian hot springs reveal ancient ecology 3
(Date:7/1/2015)... ... ... A newly launched business plan contest will ask startup companies from around the ... R&D. The Pistoia Alliance President’s Startup Challenge 2015 will see small and medium enterprises ... mentorship from a senior industry figure drawn from the Pistoia Alliance membership. , The ...
(Date:7/1/2015)... ... July 01, 2015 , ... ... pathogen transmission. CTI’ new Medical Joysticks have an impermeable molecular barrier protection ... an operator control device that will increase healthcare worker safety and reduce financial ...
(Date:6/30/2015)... , ... June 30, 2015 , ... ... 12 to take part in the first half of “Integrative Biotechnology,” an applied ... partnership established in summer 2014, this course combines students from both universities and ...
(Date:6/30/2015)... -- NASA astronaut Kjell Lindgren , who is making final ... to the International Space Station , will be available ... Tuesday, July 7. Lindgren will participate from the ... . The interviews will be preceded at 7:30 a.m. ... To schedule an interview, media must contact ...
Breaking Biology Technology:Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2
... unique properties and industry-leading characteristics of these products. , ... ... new product name changes that signify its commitment to innovation and ... They remain the same quality products that Zeus customers have ...
... and KNOXVILLE, Tenn., Feb. 10 ,Nashville-based Cumberland Emerging ... Research Foundation (UTRF) today announced they have,entered ... asthma treatment,discovered at the University of Tennessee ... providing formulation, grant funding, regulatory and product,development assistance ...
... be Addressed by Board and Management on Avigen,s February ... Biotechnology Value Fund, L.P. ("BVF"), today called for ... ) to address certain fundamental questions BVF believes need ... evaluate Avigen,s future strategic direction. Avigen announced in ...
Cached Biology Technology:Zeus Announces Product Name Changes 2Cumberland Emerging Technologies and UT Research Foundation Sign License Agreement for New Technology 2Cumberland Emerging Technologies and UT Research Foundation Sign License Agreement for New Technology 3Biotechnology Value Fund, L.P. Requests Avigen Board to Provide Critical Information to Stockholders 2Biotechnology Value Fund, L.P. Requests Avigen Board to Provide Critical Information to Stockholders 3Biotechnology Value Fund, L.P. Requests Avigen Board to Provide Critical Information to Stockholders 4Biotechnology Value Fund, L.P. Requests Avigen Board to Provide Critical Information to Stockholders 5
RayBio Human Cytokine Antibody Array 1.1 (4 array membranes) with Accessory, detects 20 cytokines (for lysate) Class: Antibody Array Products Product Group: Antibody Array...
Recombinant Feline IL-12/IL-23 p40...
Request Info...
Recombinant Equine IL-6...
Biology Products: