| ISSUE
CONTENTS: FEBRUARY 2003 |
| LIQUID
COMPOST EXTRACTS |
UNDERSTANDING
HOW COMPOST TEA CAN CONTROL DISEASE
Steve Scheuerell
Variables
in making and applying compost tea impact
its effectiveness for managing plant
diseases. This article reviews the main
factors known to influence suppression
with compost teas and addresses areas
that need further investigation. p20 |
CALIFORNIA
LANDSCAPE CONTRACTOR CALLS IT COMPOST TEA
TIME
Karin Grobe
Landscape
clients benefit from applications of
water-based compost preparations that
help control plant disease. “This
project definitely has the potential to
open up some new market niches,”
says the head of the landscaping firm.
p26 |
USING
COMPOST TEA IN IRRIGATION WATER FOR FARM
CROPS
A
grower in Washington State adds tea to
the irrigation water for vegetables,
using the farm’s 100-acre center
pivot tracts at a rate of three gallons
per acre. p27 |
|
CLOPYRALID
STUDY IN OREGON PROVIDES SIGNIFICANT DATA
Robert Rynk
A
recent study determined that clopyralid
is present in Oregon compost and
highlights how different testing
protocols yield differences in
concentrations. p28 |
| QUANTIFYING
CLOPYRALID
Analytical methods used by commercial
laboratories include gas
chromatography/mass spectometry and a
testing procedure used by EPA. p30 |
EXPLORING
SUPERIOR SYSTEMS TO MANAGE MANURE
Rhonda Sherman
North
Carolina State University evaluates
commercial options to provide cost-saving
alternatives to treat manure and protect
water quality. p32 |
OVERSEEING
THE EVALUATION PROCESS
Multidisciplinary
approach to finding solutions to
manure/litter/wastewater problems
involves partnership of private sector,
universities, environmental groups and
public agencies. p37 |
FILM
PLASTICS IN COMPOST — WRESTLING WITH
THE LIGHTWEIGHTS Robert
Spencer
The
ubiquitous film plastic finds its way
into compost feedstocks and the end
product, and facility operators spend a
lot of time and energy getting it out
using a variety of equipment and
strategies. Part I. p38f odorous air in
the filter, moisture management, a good
media mix and dust control. p38 |
MRF
TAPS RECYCLABLE-RICH L0ADS Nora
Goldstein
A
combination of screens, sorting lines,
belt magnets and conveyance systems
enables a transfer station to pull
marketable materials out of dry loads of
commercial waste streams and C&D.
Part I. p42 |
RESTRICTING
PHOSPHORUS KEY TO SURFACE WATER
MANAGEMENT Dan
Emerson
A
city ordinance adopted in 1995 to
restrict the sale of phosphorus lawn
fertilizer laid the groundwork for
statewide limits in Minnesota. p48 |
COMPOSTING
AS A CONTROL FOR SUDDEN OAK DEATH DISEASE
Matteo
Garbelotto
Laboratory
and field research is showing that a
disease affecting a large number of
native trees, shrubs and herbaceous
plants in California and Oregon may be
eradicated during temperature-controlled
composting. p53 |
TREATING
DISEASED GREEN WASTE Pat
Paswater
If
composting is approved as an alternative
treatment in early 2003, permitted sites
would be another option. p55 |
|
| BIOCYCLE
ENERGY |
FARM-SCALE
DIGESTERS IN THE GREAT LAKES STATES
Joseph M. Kramer and Frederic J. Kuzel
As
of June 2002, there were eight operating
systems that were achieving stabilized
biogas production and 11 projects in
construction or start-up. p58 |
PROCESSING
EQUIPMENT FOR ANAEROBIC DIGESTERS
To
generate effective results at AD
facilities, project managers use
grinders, hammermills, screens,
separators, loaders and microturbines.
p62 |
| |
| Each
issue also features departments such as: BioCycle
World, Reader's Q&A, Regional Roundup,
Abstracts and Industry News. |
