Navigation Links
Study finds crop performance matters when evaluating greenhouse gas emissions
Date:9/5/2011

MADISON, WI, SEPTEMBER 6, 2011 -- Measuring the emission of greenhouse gases from croplands should take into account the crops themselves.

That's the conclusion of a study in the Sept.-Oct. issue of the Journal of Environmental Quality, which examined the impact of farm practices such as tillage on the greenhouse gas, nitrous oxide. Expressing emissions per unit of crop yield rather than on a more conventional per area basis produced very different results, says the study's leader, Rod Venterea, research soil scientist with the United States Department of Agriculture's Agricultural Research Service.

In particular, his team found that total nitrous oxide emissions were not significantly affected by tillage practices when expressed on an area basis. When they were calculated per unit yield of grain, however, emissions were significantly greater under no-tillage compared with conventional tillage. A byproduct of many agricultural systems, nitrous oxide is a potent greenhouse gas (GHG) with a heat-trapping potential more than 300 times that of carbon dioxide.

The findings have important implications for how the greenhouse gases generated by agriculture are reported, evaluated, and potentially mitigated. Nitrous oxide emissions were slighter higher under no-till on a per area basis in the study, Venterea explains, but not high enough to differ statistically from those under conventional tillage. "But when we added in the fact that no-tillage also reduced yields, the effect of tillage did become significant," he says. "The point is that you need to look at both nitrous oxide emissions and yield together."

While previous studies have shown that practices like fertilizer and tillage management can affect nitrous oxide emissions, relatively few have reported the effects of these practices on crop performance at the same time. In addition, GHG emissions are commonly expressed with respect to area of field: for example, kilogram nitrou
'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

Related biology news :

1. Powerful antioxidant resveratrol prevents metabolic syndrome in lab tests: U of A study
2. Bedrock nitrogen may help forests buffer climate change, study finds
3. Marine Science Institute receives $7 Million grant to study the impact of the Deepwater Horizon
4. Preserving 4 percent of the ocean could protect most marine mammal species, study finds
5. Foods rich in protein, dairy products help dieters preserve muscle and lose belly fat: study
6. The genome of mesopolyploid crop Brassica rapa sheds new light on the study of genome evolution
7. NASA study refutes claims of drought-driven declines in plant productivity, global food security
8. New study shows that Floridas reefs cannot endure a cold snap
9. New study finds no nutritional difference between free-range and cage-produced eggs
10. Clinical study shows young brains lack the wisdom of their elders
11. No need to nag: study finds doctors nutrition advice hits home early
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/24/2014)... YORK , Dec. 23, 2014  Since its launch ... helped thousands of people to eliminate the pain of ... the antiquated system with their own biometrics fused to ... remember usernames and passwords, Hoyos Labs , the ... announced today that it is offering the app for ...
(Date:12/22/2014)... Conn. , Dec. 22, 2014  NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... pickpocket, entertainer and security consultant, Apollo Robbins ... biometric smart wallet.  Apollo Robbins ... and 7 th , 2015, demonstrating some of his ...
(Date:12/22/2014)... DUBLIN , Dec. 22, 2014 /PRNewswire/ ... ) has announced the addition of the ... report to their offering. ... This insight provides an overview of the ... Watermarking aims to control and monitor piracy ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4The Global Watermarking and Fingerprinting Markets 2
... Institute for Animal Health, Pirbright, UK Met Office and ... are working together on an early-warning system to help ... a study published today in Weather . The ... anticipate when disease carrying midges are likely to be ...
... PHILADELPHIA People with the heritable disorder of the ... develop basal cell carcinoma of the skin may have ... According to results of a placebo-controlled, randomized, double-blind, Phase ... inhibiting the development of basal cell carcinomas in a ...
... at University College London say they have gleaned a key ... No. 1 cause of vision loss in the elderly, by ... onset of the condition. In a paper to be ... Biological Chemistry , the team reports for the first time ...
Cached Biology News:Scientists create early-warning system to defend rare Jersey cows from continental disease 2Celebrex inhibited the burden of skin cancer in high-risk patients 2New research findings may help stop age-related macular degeneration at the molecular level 2
(Date:12/24/2014)... Texas , Dec. 23, 2014 ... company focused on gynecologic disease, announced today that ... Schuler , Birchview Fund LLC and several Vermillion ... of unregistered shares of Vermillion,s common stock and ... stock in a private placement.  ...
(Date:12/24/2014)... Fla. , Dec. 23, 2014  Rock Creek ... that it has filed a Clinical Trial Application (CTA) ... Healthcare products Regulatory Agency (MHRA) seeking regulatory approval to ... lead molecule, Anatabine Citrate. Contingent on the ... conduct a Phase I trial to assess the safety, ...
(Date:12/22/2014)... 22, 2014   Synthetic Biologics, Inc. ... pathogen-specific therapies for serious infections and diseases, ... today announced positive topline safety and tolerability ... of SYN-004, the Company,s investigational oral beta-lactamase ... difficile (C. difficile) infection, antibiotic-associated diarrhea ...
(Date:12/22/2014)... , Dec. 22, 2014 GenomeDx Biosciences today ... Prostate Cancer Classifier, a genomic test for prostate cancer, ... high-risk men managed by radical prostatectomy without adjuvant therapy. ... is relatively uncommon, using tumor genomics to identify these ... disease is an important advance. The study has been ...
Breaking Biology Technology:Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 2Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 4Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 5Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 2Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 3
... boxes tend to get sulky and intractable when they encounter ... in the data stream. They're a little like us that ... our own intractability, assuming we recognize it and choose to ... people who begin to look like their pets. Do we ...
... and Human Services Secretary Mike Leavitt announced yesterday that ... will be formed to make recommendations for a nationwide ... , ,This news makes the Digital Healthcare Conference ... 9 at the Fluno Center in Madison, even more ...
... experiences were passed down to new businesses at the ... 8 in Milwaukee at the Hyatt Regency. , ,New ... providers converged at the conference to learn techniques and ... for their ability to meet challenges and come away ...
Cached Biology Technology:Machine like me 2Machine like me 3Preview: Electronic health records, tech choices explored at Digital Healthcare Conference 2Preview: Electronic health records, tech choices explored at Digital Healthcare Conference 3Conference focuses on experience, challenges of being an entrepreneur 2Conference focuses on experience, challenges of being an entrepreneur 3Conference focuses on experience, challenges of being an entrepreneur 4
... CyScribe GFX Purification Kit, 50 ... labeled cDNA probesProvides efficient removal of ... labeling reactions with superior yields of ... the purification of cDNA labeled by ...
Detects activated caspases in living cells. Simple/sensitive/straight-forward procedure takes only 30 minutes. Results can be analyzed by flow cytometry/fluorescence microscopy/fluorescence plate rea...
Apoptosis Detection Systems and Reagents...
Bovine Serum Available Anticoagulants: N-02: Citrate N-04: Heparin (Na) N-06: K2EDTA N-08: Potassium Oxalate N-10: EDTA (Na) N-03: Alsevers N-05: ACD N-07: CPD N-09: K3EDTA N-11:...
Biology Products: