Navigation Links
Rice hulls a sustainable drainage option for greenhouse growers
Date:10/25/2010

WEST LAFAYETTE, Ind. - Greenhouse plant growers can substitute rice hulls for perlite in their media without the need for an increase in growth regulators, according to a Purdue University study.

Growing media for ornamental plants often consists of a soilless mix of peat and perlite, a processed mineral used to increase drainage. Growers also regularly use plant-growth regulators to ensure consistent and desired plant characteristics such as height to meet market demands. Organic substitutes for perlite like tree bark have proven difficult because they absorb the plant-growth regulators and keep them from getting to the plants. Using bark requires a 25 percent increase in the volume of growth regulators applied.

"We were not sure whether rice hulls, as an organic component, would hold up the growth regulator," said Roberto Lopez, a Purdue assistant professor of horticulture and co-author of a HortTechnology paper that outlined the findings. "Testing showed that there were no differences in plants grown with rice hulls or perlite."

Pansies and calibrachoa were planted in an 80-20 mix of both peat and perlite and peat and rice hulls and then treated with several different growth regulators. The plants treated with and without growth regulators and grown in peat and perlite and peat and rice hulls had similar heights and stem lengths.

Finding a waste product to replace perlite could reduce the price of growing media since perlite must be mined and heat processed.

"It's a really energy-intensive process and, because it's a mineral, it's non-renewable," said Chris Currey, a horticulture graduate student and co-author of the HortTechnology paper.

Rice hulls are an attractive option, Lopez said, because they can be easily transported on barges and rice growers in the South could increase profits by selling a traditional waste product.

"Often these rice hulls were being burnt because there's not a lot of other use for them," Lopez said.


'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert  

Related biology news :

1. Gene that causes barnacles to avoid ship hulls identified
2. Resource-savvy communities generate healthy, sustainable changes
3. A plan to promote sustainable US scientific discovery and innovation in the 21st century is proposed in OMICS
4. Scientists develop sustainable, environmentally friendly potting medium
5. Stanford engineers use rocket science to make wastewater treatment sustainable
6. International panel recommends redirecting the world community toward sustainable growth
7. Massive resources now directed at sustainable animal waste technology
8. Sari cloth a simple sustainable protector from cholera
9. Sustainable fishing is possible and necessary
10. Sustainable use of our seas needs an integrated view of humans and nature
11. European Alliance targets separation technologies for sustainable energy systems
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Rice hulls a sustainable drainage option for greenhouse growers
(Date:4/3/2017)...  Data captured by IsoCode, IsoPlexis Corporation,s ... statistically significant association between the potency of ... objective response of cancer patients post-treatment. The ... cancer patients will respond to CAR-T cell ... to improve both pre-infusion potency testing and cell ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health Services ... Management Systems Society (HIMSS) Analytics for achieving Stage ... Model sm . In addition, CHS previously earned ... hospitals using an electronic medical record (EMR). ... high level of EMR usage in an outpatient ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... NV (PRWEB) , ... July 20, 2017 , ... ... real solution to make clinical trial sites and study participants truly unified. TrialKit, ... regulatory compliant (FDA 21 CFR Part 11) research studies entirely on mobile devices. ...
(Date:7/18/2017)... Jersey (PRWEB) , ... July 18, 2017 , ... Sourcing ... aligns with your needs and has the capabilities to properly execute your job can ... customglassparts.com is a sourcing portal designed to showcase the company’s capabilities ...
(Date:7/18/2017)... ... July 18, 2017 , ... ... States Patent and Trademark Office for its Patent Applications 14/858,857 and 13/669,785 both ... of these patent applications further expand the protection of G-CON’s R&D investments and ...
(Date:7/18/2017)... ... July 18, 2017 , ... Allotrope Foundation won ... first phase of the Allotrope Framework for commercial use. , The Bio-IT World ... “not only elevate the critical role of information technology in modern biomedical research, ...
Breaking Biology Technology: