Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The 5 Ws of corn production

04.09.2007
The 'who' is farmers, and they're asking where to plant, what hybrid, when to apply nitrogen and why

As of late, many uncertainties have been sprouting up in corn production. Researchers and producers have been wondering if precision agricultural technologies can improve crop yield and quality or reduce their variability.

Farmers have been asking a number of questions from, which hybrid should I plant for best yield and quality, to does applying nitrogen fertilizer at a uniform rate produce a better crop outcome, and if not, what nitrogen fertilization strategy does produce a better crop in yield and quality"

Scientists at China Agricultural University, the Precision Agriculture Center of University of Minnesota and Mosaic Crop Nutrition have been attempting to answer those questions by investigating the potential impact of precision nitrogen management on corn yield, protein content and test weight in a study funded by Cargill Crop Nutrition (now Mosaic Company), Cargill Dry Corn Ingredients and Pioneer Hi-Bred International, Inc. The results from this study are published in the September-October 2007 issue of the Soil Science Society of America Journal. View the abstract at: http://soil.scijournals.org/cgi/content/abstract/71/5/1490

Precision agriculture is defined as the usage of available technology to develop custom management of soil and crops to fit specific conditions of a small area that is within a larger unit, such as a field. This practice has revolutionized modern farming by allowing farmers to choose the best management strategy at a specific time and place in their fields. It has the potential to increase agricultural resource use efficiency, reduce environmental contamination, and maintain or increase crop yield. Corn farmers use this application by varying the rate of fertilizer depending on differences in potential crop yield, soil type and landscape features across the field. As grain markets shift to a greater emphasis on ethanol, more attention is being directed to optimizing grain quality, where traditionally the emphasis was on quantity. The significant variability of abundance in a given area and abundance over a period of time in crop yield and grain quality has not influenced use efficiency or profit of products made from the crops, but made it difficult for farmers to get premium prices for their products.

The study was conducted on two commercial corn fields in eastern Illinois in 2001 and 2003 involving two corn hybrids and five different N fertilizer application rates across the landscape. Nitrogen response of corn yield and quality were fitted at different within-field locations, and the potential impacts of different N management strategies were evaluated against a uniform rate of N application that is a common farmer’s practice in the region.

The results indicated that one hybrid was found to have higher yield, quality and distribution to suppliers than the other hybrid under either a uniform or varied nitrogen application. Results also showed that varying nitrogen applied to localized within-field conditions and hybrid differences could either increase corn yield with similar or higher nitrogen rates or maintain yield with less nitrogen application, without any significant improvement of grain quality.

Sara Uttech | EurekAlert!
Further information:
http://www.soils.org
http://soil.scijournals.org

More articles from Agricultural and Forestry Science:

nachricht Climate change, population growth may lead to open ocean aquaculture
05.10.2017 | Oregon State University

nachricht New machine evaluates soybean at harvest for quality
04.10.2017 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>