Navigation Links
Historical increase in corn yield -- it's in the roots
Date:3/16/2009

Their approach involved the use of virtual plant computer simulation technologies. They modified an advanced crop model to take account of known effects on crop growth associated with varying leaf erectness and/or root system architecture. They then simulated consequences on yield for representative sites in the U.S. Corn Belt for a set of "hypothetical hybrids" varying in leaf and root characteristics.

The study revealed that the historical corn yield trend and its association with higher plant density was more likely related to change in root system architecture than to change in leaf erectness. While more erect leaf types could contribute to the effect in some high-yielding situations, changes in root systems to enhance capture of soil water at depth had the dominating effect. Results for simulations conducted for hypothetical hybrids that varied in root system characteristics were found to be consistent with a set of field experiments that reported yield response to density for hybrids released over the past 20 years.

"The use of dynamic crop models helped us to look beyond the clearly visible differences among hybrids in this time series of yield advance," says Hammer. "It enabled us to focus on the driving processes of crop growth that must be responsible for these effects. It is clear that as we move forward we need to look much harder at root systems and how they capture water."

In the study, the extra amount of water required for the 6t/ha historical yield increase was estimated as about 270mm. Further research is required to determine whether this has now positioned the corn crop near the limit of water resource availability or whether there remains opportunity for yield advance by further improvement in water capture.


'/>"/>

Contact: Sara Uttech
suttech@crops.org
608-268-4948
Crop Science Society of America
Source:Eurekalert

Page: 1 2

Related biology news :

1. Great Plains historical stability vulnerable to future changes
2. USF professor gives historical look at physiology and WWII air war
3. Historical photographs expose decline in Floridas reef fish, new Scripps study finds
4. Western diet linked to increased risk of colon cancer recurrence
5. Study finds Viagra increases release of key reproductive hormone
6. Springer increases publishing activities in South Korea
7. International team shows mercury concentrations in fish respond quickly to increased deposition
8. International team shows mercury concentrations in fish respond quickly to increased deposition
9. Weight gain between first and second pregnancies associated with increased odds of male second child
10. Mixing large doses of both acetaminophen painkiller and caffeine may increase risk of liver damage
11. Increase in ethanol production from corn could significantly impact
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2015)... 2015 Passwords have proven futile for ... recent U.S. Office of Personnel Management breach. Biometric ... conundrum, but developers and end-users are concerned about ... dilemma, Biometrics-as-a-Service provider HYPR Corp. announced today the ... third party integration. A video ...
(Date:7/13/2015)... SAN JOSE, Calif. , July 13, 2015 ... the leading developer of human interface solutions, today ... second generation touch and display driver integration (TDDI) ... solution is the first to combine Synaptics , ... expertise with proven display driver technology developed in ...
(Date:7/9/2015)... 9, 2015  Synaptics Inc. (NASDAQ: SYNA ), a ... it will report financial results for the fourth quarter ... after the close of market. The company will host ... 2:00 p.m. PT (5:00 p.m. ET), during which management ... on the live call, analysts and investors should dial ...
Breaking Biology News(10 mins):HYPR Corp. Launches Industry First Biometric Tokenization Platform 2HYPR Corp. Launches Industry First Biometric Tokenization Platform 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 4Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2
... CORVALLIS, Ore. A new review suggests that omega-3 fatty ... certain situations, and that dietary standards based on the best ... a slam dunk a few years ago may not be ... professor in OSU,s College of Public Health and Human Sciences ...
... usually brings to mind vivid images of shattered concrete ... the result of violent hurricanes, massive earthquakes, or rampaging ... natural disaster in U.S. history ravaged the Midwest in ... of this disaster? Water scarcity. Drought during this period ...
... With Halloween just a few days away, millions are flocking ... of terror. The latest video from the American Chemical Society,s ... sense of fear. The episode is available now at ... anticipation of possible harm We know that the body is ...
Cached Biology News:Excess omega-3 fatty acids could lead to negative health effects 2Excess omega-3 fatty acids could lead to negative health effects 3New book addresses consequences of drought in arid regions 2New book addresses consequences of drought in arid regions 3
(Date:7/29/2015)... 29, 2015  HealthSouth Corporation (NYSE: ... of post-acute healthcare services, offering both facility-based and ... operations for the second quarter ended June 30, 2015. ... by strong volume growth in both segments and ... Jay Grinney, President and Chief Executive Officer of ...
(Date:7/29/2015)... Inc., an early stage biotech startup based on perinatal ... the Musculoskeletal Transplant Foundation of Edison NJ ... round of development of the proprietary AmnioCept™ product line ... AmnioChor,s technology allows cryopreservation of the amniotic membrane of ... those tissues. Amnion is a well-established source of multipotent ...
(Date:7/29/2015)... VANCOUVER , July 29, 2015 /PRNewswire/ - RepliCel ... clinical stage regenerative medicine company, is pleased to announce ... dermal injector (RCI-02) have been locked.  Prototypes for ... to prepare for an application for CE mark ... Europe in 2016. (Photo: ...
(Date:7/29/2015)... TX (PRWEB) , ... July 29, 2015 , ... Costello ... new levee system to protect the Orange County, Texas area from future storm ... multi-firm design team in determining several potential levee alignment alternatives for providing protection, Costello ...
Breaking Biology Technology:HealthSouth Reports Results for Second Quarter 2015 2HealthSouth Reports Results for Second Quarter 2015 3HealthSouth Reports Results for Second Quarter 2015 4HealthSouth Reports Results for Second Quarter 2015 5HealthSouth Reports Results for Second Quarter 2015 6HealthSouth Reports Results for Second Quarter 2015 7HealthSouth Reports Results for Second Quarter 2015 8HealthSouth Reports Results for Second Quarter 2015 9HealthSouth Reports Results for Second Quarter 2015 10HealthSouth Reports Results for Second Quarter 2015 11HealthSouth Reports Results for Second Quarter 2015 12HealthSouth Reports Results for Second Quarter 2015 13HealthSouth Reports Results for Second Quarter 2015 14HealthSouth Reports Results for Second Quarter 2015 15HealthSouth Reports Results for Second Quarter 2015 16HealthSouth Reports Results for Second Quarter 2015 17HealthSouth Reports Results for Second Quarter 2015 18HealthSouth Reports Results for Second Quarter 2015 19HealthSouth Reports Results for Second Quarter 2015 20HealthSouth Reports Results for Second Quarter 2015 21HealthSouth Reports Results for Second Quarter 2015 22HealthSouth Reports Results for Second Quarter 2015 23HealthSouth Reports Results for Second Quarter 2015 24HealthSouth Reports Results for Second Quarter 2015 25HealthSouth Reports Results for Second Quarter 2015 26HealthSouth Reports Results for Second Quarter 2015 27HealthSouth Reports Results for Second Quarter 2015 28HealthSouth Reports Results for Second Quarter 2015 29HealthSouth Reports Results for Second Quarter 2015 30HealthSouth Reports Results for Second Quarter 2015 31HealthSouth Reports Results for Second Quarter 2015 32HealthSouth Reports Results for Second Quarter 2015 33HealthSouth Reports Results for Second Quarter 2015 34HealthSouth Reports Results for Second Quarter 2015 35HealthSouth Reports Results for Second Quarter 2015 36
... now market product to poultry, red meat and pork processing ... ... N.J., May 19 Tasker Products Corp.,(OTC Bulletin Board: TKER), a ... announced,that it has received authorization from the Food Safety and Inspection,Service ...
... HALO System Demonstrated for, Eradicating Barrett,s Esophagus and ... May 19 Booth #2349 -- Digestive Disease ... the design and manufacture,of medical devices for digestive ... entitled, "A Randomized, Multicenter, Sham-Controlled,Trial of Radiofrequency Ablation ...
... PACS and Practice Management Software Adds ... Philips Ultrasound with Acquisition, ... Systems, a,leading developer of digital radiography (DR), PACS (Picture ... care practices, announced it has completed its acquisition of,Ultrasource, ...
Cached Biology Technology:Tasker Products Receives Authorization from USDA for its Tasker Clear for use in Meat and Pork Industries 2Tasker Products Receives Authorization from USDA for its Tasker Clear for use in Meat and Pork Industries 3Presentation of Landmark Clinical Trial Evaluating Endoscopic Treatment for Pre-cancerous Condition of Esophagus 2Presentation of Landmark Clinical Trial Evaluating Endoscopic Treatment for Pre-cancerous Condition of Esophagus 3Eklin Announces Acquisition of Ultrasource, Inc. 2Eklin Announces Acquisition of Ultrasource, Inc. 3
versican (H-56)...
... degrades single-stranded DNA and RNA endonucleolytically ... acids (DNA:DNA, DNA:RNA or RNA:RNA) are ... high concentrations of enzyme (1). The ... termini from double-stranded DNA (2), for ...
... catalyzes the transfer of the ... 5-terminus of polynucleotides or to ... The enzyme, purified from recombinant ... to phosphorylate RNA, DNA and ...
... verticillus USBio Analyzed PRODUCT SPECIFICATIONS Form: White powder Assay: 1.5 ... units/ml): 4.5 to 6.0 Loss On Drying: less than or ... 0.1% Bleomycin Content: A 2 : 55 - 70% B ... : greater than or equal to 90% B 4 : ...
Biology Products: