Navigation Links
Can one-time tillage improve no-till?
Date:6/27/2010

MADISON, WI, June 28th, 2010 A one-time tillage has no adverse effects on yield or soil properties on no-till land, according to field research conducted at the University of Nebraska-Lincoln. Although tillage is another expense for farmers and generally increases the risk of soil erosion, a one-time tillage may be performed to correct some problem, such as a perennial weed problem.

The feasibility study was conducted for five years at two locations in eastern Nebraska. Charles Wortmann led the interdisciplinary team in examining the effects of a one-time tillage on no-till land for grain yield, reducing stratification of soil properties, increasing soil organic matter, and improving soil physical properties. The results were published in the July-August 2010 edition of Agronomy Journal.

Continuous no-till crop production has been widely adopted for reduced fuel consumption and labor requirement, erosion control, improved surface soil properties, increased profitability, and often increased yield. Crop yields have generally increased in the western and southern parts of the U.S., although northern agricultural lands have seen some declines in yield. Nebraska occupies a transition zone, with little change in yield due to no-till.

The researchers were testing whether one-time tillage of no-till could help manage certain perennial weeds, and reduce phosphorus stratification and runoff. They also wanted to determine if a one-time tillage, by burying the enriched surface soil and bringing deeper, less improved soil to the surface, improve soil structure and the distribution of soil nutrients.

Tillage did reduce stratification of phosphorus, soil organic matter and soil bulk density for the first years, but by the end of the five year experiment there was no difference between one-time till and no-till treatments. One-time tillage had no effect on soil organic matter content in the surface one foot of soil after five years. One possible negative effect of tillage was reduced microbial biomass at one site, but it did not affect grain yield.

The study areas consisted of one plot of grain sorghum rotated with soybean and corn with soybean at the other location. Tillage treatments included deep plowing with moldboard plows or a mini-moldboard plow, and disk tillage, and was done in late fall or very early spring to have low soil temperature and microbial biomass preceding and following tillage to minimize soil organic matter losses.

The authors concluded that one-time tillage of no-till can be done in eastern Nebraska without measureable long-term effects on yield or soil properties except for a change in soil microbial communities. Since tilling increases erosion risk, the authors recommend tilling only to address problems that cannot be cost-effectively managed with no-till practices.


'/>"/>

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

Related biology news :

1. RSA Designated as the Leader in One-Time Password Market by Frost & Sullivan
2. Tillage, rotation impacts peanut crops
3. No-tillage plus
4. Well-defined quantity of antioxidants in diet can improve insulin resistance
5. Compost filter socks improve runoff from croplands
6. Key nutrient in maternal diet promises dramatic improvements for people with Down syndrome
7. Consent forms for research: Have they improved in 25 years?
8. New bacterial signaling molecule could lead to improved vaccines
9. The search for improved carbon sponges picks up speed
10. ACS webinar focuses on how to improve technical writing skills
11. ARS scientists in North Dakota help improve potato storage capabilities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/8/2017)... , Feb. 8, 2017 About Voice Recognition ... to match it against a stored voiceprint template. ... pitch, cadence, and tone are compared to distinguish ... hardware installation, as most PCs already have a ... transactions. Voice recognition biometrics are most likely to ...
(Date:2/8/2017)... The biometrics market has reached a ... organizations, desires to better authenticate or identify users ... challenge questions), biometrics is quickly working its way ... is driven by use cases, though there traditionally ... uses cases, with consumer-facing use cases encompassing authentication, ...
(Date:2/7/2017)... Ind. , Feb. 7, 2017 Zimmer ... leader in musculoskeletal healthcare, will present at the LEERINK ... New York Palace Hotel on Wednesday, February 15, 2017 ... live webcast of the presentation can be accessed at ... replay following the conference via Zimmer Biomet,s Investor Relations ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... Products, Inc. (NASDAQ: CBPO) ("China Biologic" or the "Company"), a ... its financial results for the fourth quarter and fiscal year ... Total sales in the fourth quarter ... by 13.6% in USD terms to $77.6 million from $68.3 ... Gross profit increased by 13.3% to $46.8 million from $41.3 ...
(Date:2/23/2017)... NEW YORK , Feb. 23, 2017 /PRNewswire/ ... leading digital health company, and Digital Noema ... and remote patient monitoring, announce they are partnering ... DN Telehealth maximizes collaboration compatibility for ... consultations beyond a physical clinical setting to include ...
(Date:2/23/2017)... - The Fight Against Cancer Innovation Trust (FACIT) and ... to report that Fusion Pharmaceuticals Inc. (Fusion) has closed ... Innovation – JJDC, Inc. (JJDC) as the lead investor. ... Partners, and Genesys Capital, as well as founding investor ... ...
(Date:2/23/2017)... Feb. 23, 2017  Seattle,s upscale Capitol Hill neighborhood, with its ... place for a head lice treatment salon to set up ... Tuscan restaurant and a French bistro on E Madison Ave, ... aren,t just any old lice clinic, we pride ourselves on ... and release some of the stigma associated with lice. Everyone ...
Breaking Biology Technology: