The Asian Citrus Psyllid is the insect that spreads the disease hurting Florida's citrus crops. (Photo courtesy of USDA-ARS)
Disease is damaging Florida citrus crops. And Mark Brush reports… researchers say the citrus growers need a new kind of disease resistant tree:
Transcript
Disease is damaging Florida citrus crops. And Mark Brush reports… researchers say the citrus growers need a new kind of disease resistant tree:
The disease is called Huanglongbing disease and that’s Chinese for “yellow shoot disease.” It’s spread by a little Asian insect.
Right now, about 4% of the citrus crop in Florida is hit by the disease , but researchers say it can wipe out whole orange groves if it’s not contained.
The National Research Council says long term – growers should plant genetically modified trees that resist the disease.
George Bruening is a plant pathologist at the University of California – Davis and he chaired the study for the National Research Council:
“And so if you had a genetically modified tree, Florida citrus and the people of Florida would be very much ahead, because there would be less use of insecticides, for example.”
Bruening says these types of genetically modified orange trees don’t exist yet. And it’ll take years to develop them and get government approval.
Every year, 20% of the watermelon crop
never makes it to buyers. Wayne Fish hopes to turn some of this waste into ethanol. (Photo by Gail Banzet)
There are 320 acres of different crops and vegetables at the USDA’s agriculture research
laboratory, and one acre is dedicated
to watermelons. (Photo by Gail Banzet)
At the research station in a lab, Wayne Fish and his team combine yeast with
watermelon sugars. (Photo by Gail Banzet)
The watermelon mixture is fermented and placed in a still. This is how they enrich the mixture to 95% ethanol. (Photo by Gail Banzet)
Every year in the US, more than 750-
million pounds of watermelon rot away
in the fields. Those left behind can’t
be sold because they’re sunburnt, diseased
or damaged, but now scientists in Oklahoma
are working on a way to use the abandoned
fruit. Gail Banzet reports:
Transcript
Every year in the US, more than 750-
million pounds of watermelon rot away
in the fields. Those left behind can’t
be sold because they’re sunburnt, diseased
or damaged, but now scientists in Oklahoma
are working on a way to use the abandoned
fruit. Gail Banzet reports:
Growers say it was a pretty fair season for watermelons in 2009. A lot of ripe, juicy
melons were enjoyed during the summer months, but, every year, 20% of the crop
never makes it to buyers.
(sound of driving)
Research chemist Wayne Fish steers his truck around the USDA’s agriculture research
laboratory in Lane, Oklahoma.
There are 320 acres of different crops and vegetables here, and one acre is dedicated
to watermelons. Workers have already picked the good ones. Those that are left are
discolored, misshapen or damaged by raccoons or birds.
“There’s one where a crow has pecked on it. That melon is over-ripe, so it has
two strikes against it.”
But Wayne Fish says that watermelon can still be used.
“It’ll still make ethanol fine.”
Four years ago, the National Watermelon Association started studying the ethanol
potential of watermelon sugars. When the project showed favorable results, a trial
process began at the research station in Oklahoma. Bob Morrissey is Executive Director
of the National Watermelon Association.
“If you’ve got that fully developed watermelon there, it has all of the components
– the water, the sugar and the fiber – to create ethanol.”
(sound of machines in a lab room)
Back at the research station in a lab, Wayne Fish and his team combine yeast with
watermelon sugars. Hours later, the mixture is fermented and placed in a still.
“By distilling that mixture, one drives the ethanol off together with a small
amount of water. That’s how we enrich the mixture to ultimately 95% ethanol.”
Fish says the project is not an attempt to replace sugar cane or corn for ethanol. This
pilot phase of testing shows wasted watermelons can add some ethanol to the overall
market.
Bob Morrissey at the National Watermelon Association says using the melons could
open up a whole new market for farmers. They could sell the good ones to people and
the bad ones to ethanol plants.
“That farmer could literally harvest his or her entire crop, send it to the ethanol
plant, and at least get something out of it to try and cover their cost instead of
taking a complete loss.”
There are a lot of growers across the country who are worried about wasting melons.
Jim Motes is from Oklahoma. Even though he’s not a huge farmer, he says he’s always
looking for ways to make the most of his crop.
“If they can find a large enough quantity to make it efficient, then it’s a good idea,
because there are a lot of watermelons laying there when the field disked up that
ought to find some use.”
Researchers say watermelon ethanol is drawing a lot of attention. A Texas-based
company Common Sense Agriculture is currently working on a mobile unit that would
process the melon sugars and produce ethanol right in the field.
East Pioneers, MT (Photo courtesy of the Campaign for America's Wilderness)
Boulder-White Clouds, ID (Photo courtesy of the Campaign for America's Wilderness)
Tumacacori Highlands, AZ (Photo courtesy of the Campaign for America's Wilderness)
An environmental group is calling on Congress
to better protect some of the last wilderness areas of
the lower 48 states. Lester Graham reports the group
identifies ten wild spots it says are in trouble:
Transcript
An environmental group is calling on Congress
to better protect some of the last wilderness areas of
the lower 48 states. Lester Graham reports the group
identifies ten wild spots it says are in trouble:
The group, Campaign for America’s Wilderness, reports on pristine places that are
facing pressures from development and other actions the group sees as threatening.
Mike Matz heads up the environmental group. He says although there are some
restrictions on how the public lands are used, sometimes they’re not enough.
“The land managers often times need some additional tools to be able to prevent certain
damaging activities, whether it’s logging on national forests or mining on public lands.
And one of the most pervasive threats we see today is from off-road-vehicle
traffic that is rampant and unregulated.”
Off-road-vehicles are allowed on many of the sites, but Matz says the riders don’t
always stay on the trails and end up damaging areas. The group points out that
only 2.5% of the continental U.S. is protected as wilderness.
For The Environment Report, this is Lester Graham.
The Asian Citrus Psyllid is the insect that spreads the disease hurting Florida's citrus crops. (Photo courtesy of USDA-ARS)
