Wautoma, WI
Current Conditions
0:47 AM CST
Partly Cloudy
Temperature
34°F
Dew Point
34°F
Humidity
100%
Wind
ENE at 8 mph
Barometer
29.74 in. F
Visibility
1.75 mi.
Sunrise
07:29 a.m.
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04:22 p.m.
Afternoon Forecast (12:00pm-7:00pm)
Temperatures will range from 37 to 32 degrees with cloudy skies. Winds will remain steady around 11 miles per hour from the east. Rain amounts of less than a tenth of an inch are expected. Snow accumulation of less than a half inch is predicted.
7-Day Forecast
Monday
37°F / 32°F
Light Rain/Snow
Tuesday
40°F / 32°F
Light Rain
Wednesday
36°F / 23°F
Mostly Cloudy
Thursday
29°F / 24°F
Cloudy
Friday
33°F / 22°F
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Mostly Cloudy
Sunday
23°F / 0°F
Light Snow
Detailed Short Term Forecast
Issued at 0:47 AM CST
Monday...Temperatures will range from a high of 37 to a low of 32 degrees with cloudy skies. Winds will range between 10 and 16 miles per hour from the eastnortheast. 0.34 inches of rain are expected. 1.00 inch of snow is expected.
This Evening ...Temperatures will range from 32 to 34 degrees with cloudy skies. Winds will remain steady around 14 miles per hour from the east. Rain amounts of less than a tenth of an inch are expected. Snow accumulation of less than a half inch is predicted.
Overnight ...Temperatures will remain steady at 34 degrees with cloudy skies. Winds will range between 12 and 16 miles per hour from the northeast. Rain amounts between a tenth and quarter of an inch are predicted.
Tuesday...Temperatures will range from a high of 40 to a low of 32 degrees with cloudy skies. Winds will range between 3 and 16 miles per hour from the south. 0.39 inches of rain are expected. Less than 1 inch of snow is possible.

Pesticide seasoning creates lethal diet for baby bees

Feb. 11, 2014 | 0 comments

UNIVERSITY PARK, PA

Farmers who use certain pesticides to kill insects and fungi on their crops may also be destroying their honeybees.

Research completed by Penn State and University of Florida show four common pesticides and an inactive chemical often used as a pesticide additive (NMP) are highly toxic to honeybee larvae. In addition, the research found that the negative effects of the pesticides can be greater when found in combination within the hive.

That's a problem, the researchers point out, since pesticide safety is judged almost entirely on adult honeybee sensitivity and does not consider mixtures of pesticides. The risk assessment process that the Environmental Protection Agency uses should be changed, they contend.

Previous research by the team showed forager bees return to the hive with pollen that includes, on average, six different pesticides. In the hive, nurse bees use the contaminated pollen to make the beebread they feed to honeybee larvae.

The researchers included Penn State professors of entomology Jim Frazier and Chris Mullin; Wanyi Zhu, graduate research assistant in entomology; and Daniel Schmehl, University of Florida postdoctoral associate in entomology and nematology.

The team focused on four common pesticides: fluvalinate, coumaphos, chlorothalonil and chlorpyrifos.

Fluvalinate is an insecticide/miticide marketed under several names including Apistan, while Coumaphos is a miticide/insecticide used as a livestock dip, dust or spray.

Chlorothalonil is a fungicide marketed under several names including Bravo. It is a broad-spectrum agricultural fungicide often applied to crops in bloom when honeybees are present for pollination because it is currently classified as safe to bees

Chlorpyrifos is a widely used insecticide in crop management, marketed under several brands including Lorsban, while NMP (N-methyl-2ppyrrolidone) is added to pesticides to help them spread and penetrate the target plants or animals pests.

Fluvalinate and coumaphos are commonly used by beekeepers on crops to control Varroa mites. The compounds persist within beehives for about five years.

The research team raised honeybee larvae in their laboratory, feeding them beebread treated with a single pesticide and mixtures of all the pesticides. They also added seven concentrations of NMP to a royal jelly diet made from pollen.

The treated diets, containing different types and concentrations of chemicals, were fed to the laboratory-raised bee larvae. The research showed that mixtures of pesticides can have greater consequences for larval toxicity than are expected from individual pesticides.

Of the four pesticides, the larvae were most sensitive to chlorothalonil, while a mixture of chlorothalonil and fluvalinate also had negative affects.

The larvae were also sensitive to chlorothalonil and the miticide coumaphos. In contrast, they noted, the addition of coumaphos significantly reduced the toxicity of the fluvalinate and chlorothalonil mixture.

The research team also documented that increasing amounts of NMP corresponded to increased larval mortality, even at the lowest concentration tested.

The pesticides may kill by directly poisoning the larvae or indirectly through inadequate nutrition by disrupting the beneficial fungi that are essential for nurse bees to process pollen into beebread. Either way, researchers pointed out, chronic exposure to pesticides during the early life state of a honeybee has a resulting impact on the survival and development of the entire bee brood.

The findings suggest that the common pesticides, individually or in mixtures, have statistically significant impacts on honeybee larval survivorship. The study is the first to report serious toxic effects on developing honeybee larvae of dietary pesticides in concentrations that currently occur in hives.

The research was funded by the National Honey Board, the U.S. Department of Agriculture-National Institute of Food and Agriculture-Agriculture and Food Research Initiative-Coordinated Agricultural Products and the Foundational Award program.

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