Navigation Links
Are organic crops as productive as conventional?
Date:3/25/2008

Can organic cropping systems be as productive as conventional systems" The answer is an unqualified, Yes for alfalfa or wheat and a qualified Yes most of the time for corn and soybeans according to research reported by scientists at the University of Wisconsin-Madison and agricultural consulting firm AGSTAT in the March-April 2008 issue of Agronomy Journal.

The researchers primarily based their answer on results from the Wisconsin Integrated Cropping Systems Trials, conducted for 13 years (1990-2002) at Arlington, WI and 8 years (1990-1997) at Elkhorn, WI. These trials compared six cropping systems (three cash grain and three forage based crops) ranging from diverse, organic systems to less diverse, conventional systems. The cash grain systems were 1) conventional continuous corn, 2) conventional corn-soybean, and 3) organic corn-soybean-wheat where the wheat included a leguminous cover crop. The three forage based systems were 1) conventional corn-alfalfa-alfalfa-alfalfa, 2) organic corn-oats-alfalfa-alfalfa, and 3) rotationally grazed pasture.

In this research they found that: organic forage crops yielded as much or more dry matter as their conventional counterparts with quality sufficient to produce as much milk as the conventional systems; and organic grain crops: corn, soybean, and winter wheat produced 90% as well as their conventionally managed counterparts. In spite of some climatic differences and a large difference in soil drainage between the two sites, the relatively small difference in the way the cropping systems performed suggested that these results are widely applicable across prairie-derived soils in the U.S. upper Midwest. The researchers also compared their results to other data analysis done on this topic in the U.S. Midwest.

Although researchers found that diverse, low-input/organic cropping systems were as productive as conventional systems most of the time, there is a need for further research, according to the studys author Dr. Joshua L. Posner, University of Wisconsin.

There continues to be improvements in weed control for organic systems that may close the gap in productivity of corn and soybeans in wet seasons, Posner says. On the other hand, technological advances may accelerate productivity gains in conventional systems that would outstrip the gains in organic systems even in favorable years.

The true question of whether organic cropping systems are as productive as conventional systems is a dynamic question and one that requires continual reevaluation.


'/>"/>

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

Related biology news :

1. New microsensor measures volatile organic compounds in water and air on-site
2. Surprise in the organic orchard -- a healthier worm in the apple
3. Study reveals that nitrogen fertilizers deplete soil organic carbon
4. Is it organic or not?
5. Uncharged organic molecule can bind negatively charged ions
6. Dissolved organic matter in the water column may influence coral health
7. MIT: Human-generated ozone will damage crops
8. Iowa Staters talk biofuels, healthy oils and pharma crops at AAAS meeting
9. What farmers think about GM crops
10. Gene that controls ozone resistance of plants could lead to drought-resistant crops
11. Study finds Viagra increases release of key reproductive hormone
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2017)... 2017 The report "Gesture Recognition and Touchless Sensing Market ... - Global Forecast to 2022", published by MarketsandMarkets, the market is expected to ... between 2017 and 2022. Continue Reading ... ... ...
(Date:3/20/2017)... At this year,s CeBIT Chancellor Dr. Angela ... The Chancellor came to the DERMALOG stand together with the Japanese Prime ... partner country. At the largest German biometrics company the two government leaders ... iris recognition as well as DERMALOG´s multi-biometrics system.   ... ...
(Date:3/9/2017)... FRANCISCO and MOUNTAIN VIEW, Calif. ... , "Eating Well Made Simple," and 23andMe , ... help guide better food choices.  Zipongo can now provide ... their food preferences, health goals and biometrics, but also ... certain food choices. Zipongo,s personalized food decision ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... March 23, 2017  SeraCare Life Sciences, ... in vitro diagnostics manufacturers and clinical laboratories, ... first multiplexed Inherited Cancer reference material ... by next-generation sequencing (NGS). The Seraseq™ Inherited Cancer ... input from industry experts to validate the ...
(Date:3/23/2017)... YORK , March 23, 2017 ... ... of death, putting significant strain on health care systems, in ... cancer diagnoses rises, so too does the development of innovative ... minimum side effects. Among the many types of cancer treatments, ...
(Date:3/22/2017)... Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN), today announced a ... Biobank and GSK to generate genetic sequence data from the ... will enable researchers to gain valuable insights to support advances ... of serious and life threatening diseases. ... Genetic evidence has revolutionized ...
(Date:3/22/2017)... 22, 2017 Oramed Pharmaceuticals Inc. (NASDAQ: ... www.oramed.com ), a clinical-stage pharmaceutical company ... systems, announced today that Dr. Miriam Kidron ... presentation titled, "Oral Insulin for Diabetes Treatment: Bypassing ... Institute,s Oligonucleotide and Peptide Therapeutics (OPT) Boston Conference in ...
Breaking Biology Technology: