Subscribe free to our newsletters via your
. Earth Science News .


Subscribe free to our newsletters via your




















WOOD PILE
Recycling pecan wood for commercial growing substrates
by Staff Writers
Las Cruces NM (SPX) Mar 22, 2016


Hedge-pruning pecan trees generates significant tonnages of wood biomass. A study established good potential for pecan wood chips to partially replace peatmoss in greenhouse potting substrates, and outlined steps needed to turn a pecan wood "eco-cycle" into reality. Image courtesy of Lester Boyse. For a larger version of this image please go here.

In the ornamental greenhouse and nursery industries, concerns over peatmoss availability, cost, and harvest restrictions have created an imminent need to identify alternative substrates used in the production of potted plants.

Growers are looking to chipped wood products used as substrates, hoping to supplement peatmoss without the need for extensive changes in production practices. Scientists at New Mexico State University tested pecan wood for its feasibility as a substrate and revealed several recommendations that can inform growers' choices.

The authors of the study in the February 2016 issue of HortScience say there has been limited research into the use of hardwood chips in greenhouse substrates, as most studies have focused on soft woods such as pine.

"Research is needed to determine growth and performance of potted plants in response to pecan wood-amended substrates, particularly for how fertilization practices should be modified to address potential nutrient limitations," they explained.

"Commercial production of pecan generates significant woody biomass from hedge prunings with little economic value," said Geno Picchioni, corresponding author of the study. "Value-added uses could aid pecan growers, and one possible use is wood chips for potting substrates to lessen dependence on peatmoss, thereby aiding greenhouse growers."

The research design featured pecan wood substrates made of a peat-based formulation containing 67% peatmoss, 21% rice hulls, and 12% rockwool by volume.

'Carpino' garden chrysanthemum plants were grown for 60 days in five pecan wood chip substrate levels that substituted 0%, 25%, 50%, 75%, and 100% of peatmoss by volume. Three water-soluble fertilizer rates (nitrogen at 0, 200, or 400 mg-L-1) were applied with each irrigation and to each of the wood substitution treatments.

According to the authors, the findings supported several issues that had been previously determined, including high leaching fractions, reductions in substrate fertility, increases in substrate pH, and reductions in shoot growth and leaf nutrient levels.

"High water-soluble fertilizer at 400-N proved necessary with even the smallest substitution of pecan wood chips (25%) to achieve comparable growth as a conventional system with only peatmoss and 200-N," the authors noted.

They said that the study showed a positive opportunity for using pecan wood chips in greenhouse substrates, but suggested that adjustments to water and fertilizer management are needed to realize the potential of the product.

"When shredded pecan branches are recycled to the orchard floor, they complete a closed wood eco-cycle that, in New Mexico, may be the most reasonable disposal option at this time," Picchioni said.

"Based on our findings, greenhouse crops have potential to become part of the cycle and provide a value-added option for pecan growers, which has proven successful in southern pine forests and plantations."

The complete study and abstract are available on the ASHS HortScience electronic journal

.


Related Links
American Society for Horticultural Science
Forestry News - Global and Local News, Science and Application






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Previous Report
WOOD PILE
No logging at protected Tasmanian forest: Australia
Sydney (AFP) March 20, 2016
Australian authorities Sunday said there would be no logging in the World Heritage-listed Tasmanian Wilderness, following recommendations in a report submitted to the United Nations's cultural body UNESCO. One of the last expanses of temperate wilderness in the world, the forest in Tasmania covers nearly 20 percent, or 1.4 million hectares, of the southern island state. The conservative ... read more


WOOD PILE
Two schoolchildren killed, nine missing in Pakistan avalanche

Hope fades to fear for Chinese refugees in junta-run Thailand

Maths could help search and rescue ships sail more safely in heavy seas

Prince Harry hopes to draw focus to quake-hit Nepal with visit

WOOD PILE
A foldable material that can change size, volume and shape

The world's blackest material is now in spray form

New insights into atomic disordering of complex metal oxides

How to make porous materials dry faster

WOOD PILE
Ocean acidification along California coast most damaging at night

Ocean acidification takes a toll on California's coastline at nighttime

Coral bleaching at Barrier Reef 'severe': Australia

Calfornia reservoirs get respite but drought still on

WOOD PILE
Digging deeper: Study improves permafrost models, reduces uncertainties

Climate warming accelerating carbon loss from thawing Arctic soils

Nature study reveals rapid ice-wedge loss across Arctic

Early Earth was colder than previously thought

WOOD PILE
French MPs slash 'Nutella tax' after Indonesia, Malaysia protest

Hindu cow activists drink pesticide in India, one dies

Mongolia herders face disaster: Red Cross

Sorghum: Not so ho-hum

WOOD PILE
Wetland enhancement in Midwest could help reduce catastrophic floods of the future

Pakistan rains leave 42 dead: officials

Japan's tsunami: Five things after five years

Pakistan rains leave 28 dead: officials

WOOD PILE
Kenya army says killed 34 Shebab in Somalia firefights

Nigeria's ex-defence chief raided staff salary funds to buy property, court told

China and Gambia resume diplomatic ties: ministry

Bank of China gains foothold in Morocco

WOOD PILE
400,000-year-old fossils from Spain provide earliest genetic evidence of Neandertals

How the brain detects short sounds

Neanderthal diet: Only 20 percent vegetarian

Early human habitat, recreated for first time, shows life was no picnic




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News








The content herein, unless otherwise known to be public domain, are Copyright 1995-2016 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.