Tag Archives: Silviculture

Beautyberry as insect repellant

Beautyberry, Callicarpa americana, proven insect repellant!

Barbara Pleasant wrote for Mother Earth News April/May 2009, Beautyberry Banishes Bad Biting Bugs: Researches are finding evidence that beautyberry, long used as a folk remedy, really does deter bugs such as ants, ticks and others.

In 2006, researchers at the U.S. Department of Agriculture’s Natural Products Utilization Research Unit in Oxford, Miss., found that extracts from beautyberry leaves could match DEET for repelling mosquitoes. The next year, experiments showed that the active ingredients from the leaves (callicarpenal and intermedeol) provided 100-percent repellency of black-legged ticks for three hours. In 2008, the four-person research team, headed by chemist Charles Cantrell in Mississippi and entomologist Jerome Klun in Maryland, published research that added fire ants to the list of pests repelled by essential oil distilled from beautyberry leaves….

Fresh green leaves, crushed and rubbed on people or pets, often repel insects for a couple of hours.

Looks like Charles L. Cantrell of U. Miss. has published several papers about this:

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Woodpecker trees, Okra Paradise Farms, 29 June 2012

We had to take down one dead tree, but there are others for the woodpeckers. Well, people keeping telling me this oak is dead, but I say it's only been a few years, and it's going to sprout out again any time now:

Dead oak

Pictures by John S. Quarterman for Okra Paradise Farms, Lowndes County, Georgia, 29 June 2012.

Dead pine:

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Protracted extreme drought: U.S. Drought Monitor, 2012-05-08

Acording to U.S. Drought Monitor, drought throughout south Georgia and surrounding areas is either extreme or exceptional, and has been for months.

Here you can see detail for Georgia:

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Groundwater at historically low levels

The only well in the Withlacoochee, Little, or Alapaha River watersheds that seems to be instrumented for near-realtime depth measurements is in Valdosta. That well is now at historic lows, compared to 55 years of back data.

On the graph to the right, the black triangle in the middle of the green is the median over those 55 years since 1957. The green is 25th to 75th percentile. The yellow is 10th to 24th percentile. The red is below 10th percentile. I’m guessing below the red means never been seen that low before in that month.

The current depth shown, 137.52 feet below the surface on 26 April 2012, is not the lowest ever seen, which was 152.31 feet on 19 September 1990. But apparently it is lower than seen before for April.

Maybe we should think about water conservation more frequently than just when Valdosta’s water pumps have problems. Not just for watering lawns; also for agriculture and silviculture. Maybe we should try to plant crops that don’t require as much irrigation, or plant them in ways that don’t lead to so much evaporation. Maybe we should be more careful about clearcutting trees, which causes rapid runoff that doesn’t get back into the groundwater as much. Maybe we should think about how much growth do we want.

-jsq

Drying Out South Georgia Wetlands in Dirty Dozen by Georgia Water Coalition

We’re on Georgia Water Coalition’s Dirty Dozen 2011: as 9. South Georgia Wetlands: Four Decades of Ditches Dry Out South Georgia Wetlands:

Since the 1970s, state and federal regulatory agencies have allowed the destruction of more than 200,000 acres of highly critical wetlands throughout South Georgia to increase timber production and agricultural yields and usher in residential and commercial development. These wetlands that captured water and slowly released it to streams no longer perform that important function. The result has been increased floods when it rains and record low flows when it doesn’t….

Flooding? Like the 700 year flood in Lowndes County 3 years ago today?

What’s a wetland, anyway?

the greatest concentration of wetlands is in the Coastal Plain of South Georgia. Though these forested foodplains and wetlands may not seem directly linked to our rivers and streams, they play an important role in holding water during rain events and dispensing it during dry periods. The sponges and kidneys of our state, they mitigate major floods, lessen the impacts of drought, and clean the water that passes through them, while regulating the amount of freshwater entering Georgia’s coastal estuaries where commercially important seafood find critical habitat. Additionally, these wetlands provide important habitat for waterfowl and other wildlife.

So what’s the problem?

In an effort to convert these wild lands into
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Reforestation for Profit

It seems that reforestation and land restoration produces twice as many jobs as biomass and nine times as many as nuclear.

Nor does any of this have to adversely affect the Georgia lumber industry. It’s well established that the currently popular method of clearcutting isn’t the only way. Pine forests can be managed profitably via selective logging; here’s more about that.

That permits the forest to remain a forest, with native vegetation, wildlife, hunting, recreation, flood control, etc., all for more forests than we have now.

Plus carbon sequestration credits.

Cotton farmers might like growing trees better under such economic conditions.

All this is shovel-ready for stimulus. There’s no new technolgy to develop for forest planting or management. Just implement carbon-sequestration credits for ongoing sustainability, and perhaps use stimulus funding to speed planting trees.