Navigation Links
Organic apple orchards benefit from green compost applications
Date:7/21/2014

FAYETTEVILLE, AR In traditional apple orchards, effective management practices rely on two interrelated components: finding ways to manage competitive vegetation under the trees, and supplying important supplemental nutrition to trees. These factors are further complicated in organic management systems where limited tools are available, and producers need to meet the stringent soil fertility and crop nutrient management standards of the National Organic Program. University of Arkansas scientists published a study that includes recommendations for the use of various groundcover management systems for apple orchard floors. They say that selected management systems can improve soil quality in organically managed apple orchards.

Curt Rom, corresponding author of the study (published in HortScience), explained that orchards established on the weathered, acidic mineral soils in the Ozark Highlands must be strategically managed in order to meet the trees' nutritional requirements. "A common characteristic of Ozark Highland soils is a relatively low soil organic matter concentration, a condition that can have detrimental effects on orchard productivity," Rom said. A cross-disciplinary research team studied the impacts of groundcover management systems and nutrient source on soil characteristics, tree health and productivity, and insect, disease, and weed management. The experiments were performed in an organically managed apple orchard that was established in 2006 and continues today at the University of Arkansas' Agricultural Research and Extension Center in Fayetteville.

The researchers evaluated several under tree, in-row groundcover management systems, including shredded paper, wood chips, municipal green compost, and mow-blow. They also tested various nutrient sources (non-fertilized control, composted poultry litter, and pelletized organic commercial fertilizer). The groundcover systems and nutrients were analyzed for their respective effects on soil organic matter, carbon, and nitrogen concentration, and soil carbon and nitrogen sequestration.

The results showed that the use of various groundcover management systems as an orchard floor management tool can increase soil organic matter, total soil, and total nitrogen mineral soils, thereby improving soil quality. The greatest increases in these factors were associated with applications of green compost, which the authors say was a result of accelerated formation of carbon- and nitrogen-rich soil organic matter.

"Compared with conventional apple orchards managed with herbicides and fertilizers, green compost, wood chip, and shredded paper treatment may result in improved soil quality," the authors concluded. "However, care should be taken in organic apple production to ensure nutrients are not over applied, thereby protecting soil and water resources and maintaining the health of the orchard ecosystem."

According to Rom, the study has implications for sustainably and conventionally managed orchards as well as organic orchards, and demonstrates the sustainability of organically managed systems.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Related biology news :

1. Organic study of live pancreatic tissue yields new opportunities for diabetes research
2. New protocol recommendations for measuring soil organic carbon sequestration
3. Organic rice research moves to front burner in Texas
4. Organic tomatoes accumulate more vitamin C, sugars than conventionally grown fruit
5. High performance semiconductor spray paint could be a game changer for organic electronics
6. Organic vapors affect clouds leading to previously unidentified climate cooling
7. Organic electronics: Imaging defects in solar cells
8. Vetch cover crop, fertilizer practices recommended for organic zucchini
9. New gas-phase compounds form organic particle ingredients
10. Cfaed starts a research project on organic electronics with the University of Brasília
11. Researchers question published no-till soil organic carbon sequestration rates
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/20/2016)... June 20, 2016 Securus Technologies, a ... solutions for public safety, investigation, corrections and monitoring ... involved, it has secured the final acceptance by ... for Managed Access Systems (MAS) installed. Furthermore, Securus ... to be installed by October, 2016. MAS distinguishes ...
(Date:6/7/2016)... 7, 2016  Syngrafii Inc. and San Antonio ... that includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" ... collaboration will result in greater convenience for SACU ... while maintaining existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/1/2016)... , June 1, 2016 Favorable ... Election Administration and Criminal Identification to Boost Global Biometrics ... recently released TechSci Research report, " Global Biometrics Market ... Competition Forecast and Opportunities, 2011 - 2021", the global ... by 2021, on account of growing security concerns across ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... (PRWEB) , ... June 27, 2016 , ... ... published their findings on what they believe could be a new and helpful ... the new research. Click here to read it now. , Biomarkers ...
(Date:6/27/2016)... ... June 27, 2016 , ... Newly created ... and solutions to the healthcare market. The company's primary focus is on new ... and marketing strategies that are necessary to help companies efficiently bring their products ...
(Date:6/27/2016)... 2016  Liquid Biotech USA ... a Sponsored Research Agreement with The University of ... from cancer patients.  The funding will be used ... with clinical outcomes in cancer patients undergoing a ... be employed to support the design of a ...
(Date:6/24/2016)... discussions on a range of subjects including policies, debt and ... Poloz. Speaking at a lecture to the Canadian ... to the country,s inflation target, which is set by both ... "In certain areas there needs to be ... why not sit down and address strategy together?" ...
Breaking Biology Technology: