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'
'/>"/>

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

Page: 1 2

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:4/18/2014)... researchers have published soil organic carbon sequestration rates. ... organic carbon can be sequestered by simply switching from ... there is a growing body of research with evidence ... cover crops, small grains, and forages may not be ... , "Some studies have shown that both moldboard and ...
(Date:4/18/2014)... Durham, NC Seeds that sprout as soon as they,re ... plants need to be more careful. In the wild, a ... rainy day would risk disaster. More than just an insurance ... out that seed dormancy has long-term advantages too: Plants ... give rise to more species, finds in a team of ...
(Date:4/18/2014)... led by a University of California, Riverside professor of ... Department of Defense grant to uncover fundamental design rules ... predictable design of light-weight, tough and strong advanced materials ... and animals, including the mantis shrimp, toucan and bamboo. ... over millions of years and coming up with design ...
Breaking Biology News(10 mins):Researchers question published no-till soil organic carbon sequestration rates 2Researchers question published no-till soil organic carbon sequestration rates 3Researchers question published no-till soil organic carbon sequestration rates 4Plants with dormant seeds give rise to more species 2Mantis shrimp, toucan and trilobite, oh my 2Mantis shrimp, toucan and trilobite, oh my 3
... rise, some species of corals are likely to succeed at ... on April 12 in the Cell Press journal Current ... effects on corals. "The good news is that, rather ... change by changing the mix of coral species as the ...
... fit frogs have faster-changing genomes, says a new study ... Stretches of DNA accumulate changes over time, but the ... between species, said author Juan C. Santos of the ... In the past, biologists trying to explain why some ...
... cause hearing damage to Sailors and Marines on flight ... funding a new project to help reduce jet noise, ... into two categories: noise exposure on the flight deck ... said Dr. Brenda Henderson, deputy manager for the Jet ...
Cached Biology News:Under climate change, winners and losers on the coral reef 2Athletic frogs have faster-changing genomes 2ONR taps research teams to help reduce jet noise 2
(Date:1/14/2014)... Date: Friday, April 11, 2014 , Time: 6 p.m. – ... Warrington, Pa. , Details: The Hepatitis B Foundation, ... cure for hepatitis B and improving the quality of life ... on Friday, April 11 at Warrington Country Club in Warrington, ...
(Date:1/14/2014)... 2014 EquitiesIQ, a leading informational research ... Alliqua is an emerging biomedical company acquiring, developing, manufacturing, ... market. , Free report download: http://equitiesiq.com/reports/alliqua/ , ... management team and Board, which launched the company’s new ...
(Date:1/14/2014)... , Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: ... and commercializing innovative therapies addressing major unmet medical ... received the Notice of Allowance from the United ... self-delivering RNAi compounds (sd-rxRNA®), for the treatment of ...
(Date:1/14/2014)... During the 1600’s through the 1800’s doctors contributed unknowingly ... this time period, doctors did not know that they needed ... death of vulnerable patients. In the same way, medical interns ... unwittingly transmitting herpes viruses to their patients. The CBCD explains. ...
Breaking Biology Technology:Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 2Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 3
... Milwaukee, Wis. - The life sciences, transportation, and ... collaboration between the cities of Milwaukee and Madison, according to ... appeared with Madison Mayor Dave Cieslewicz in a ... cities are making progress on their M2 Collaborative and their ...
... week from a 15-day tour of some of Australia and ... IT companies because unlike in the States, where the Web ... marketplace hasnt been captivated by the same frenzy. Indeed, of ... through the major tech venues of the region, only two ...
... high-stakes game of citywide wireless Internet, do deep pockets trump local ... example, the answer might be yes. Earlier this year, Milwaukee was ... in the nation. City officials hoped to have some areas of ... now it looks as though wireless hot spots will have to ...
Cached Biology Technology:Cieslewicz, Barrett talk economic collaboration 2Cieslewicz, Barrett talk economic collaboration 3Cieslewicz, Barrett talk economic collaboration 4Start-ups "down under" not captivated by Web 2.0 2Start-ups "down under" not captivated by Web 2.0 3Milwaukee runs out of patience with wireless Internet provider 2Milwaukee runs out of patience with wireless Internet provider 3
MAb to Mouse MHC Class I H-2Kd...
... contains a unique β-agarose digesting enzyme developed ... intact DNA and RNA from low melting ... TAE, TBE, MOPS, or phosphate buffers. The ... TAE, TBE, MOPS, and phosphate electrophoresis buffers ...
... a unique β-agarose digesting enzyme developed at ... DNA and RNA from low melting point ... TBE, MOPS, or phosphate buffers. The gel ... TBE, MOPS, and phosphate electrophoresis buffers or ...
... Perhaps sheer in-house demand is causing shortages ... your precious antibody. This can cause unwanted ... • Receive royalties for your hard work ... let us build it up and market ...
Biology Products: