Posts Tagged 'pesticides'



We Don’t Need GMO Cotton

This is a story about why we do not need genetically engineered cotton. GMO cotton has bacterial genes inserted into the cotton plant genome with the “on-switch” gene permanently turned on so every cell of the cotton plant continuously produces pesticide. Bt cotton produces 10,000 times the amount of Bt toxin that would be sprayed on the crop.

I know something about pest control in cotton. My entomologist/applied insect ecologist Dad, Everett (Deke) Dietrick, had me learn to drive in cotton fields. I dropped him on one end of a field and picked him up at the other end so he could monitor the insect ecology through the field. He did research at the University of California on biological pest control. He quit the University because the pesticide companies pressured the University to make sure nothing relevant was done or published about biocontrol. He set up an insectary business — growing a tiny wasp that kills cotton bollworm eggs. He was successful. Cotton growers in Coachella and Imperial Valley’s stopped spraying pesticides and sales of pesticides went down.

Scientists from the Soviet Union heard about his success. He had an open door policy and they came to visit. The Soviets learned and improved on Deke’s biological control program and applied it in a string of 80 insectaries throughout the cotton producing region covering six Central Asian countries. A couple decades later I was invited by the World Bank and by Mercy Corps to go to Turkmenistan and Uzbekistan to help the people who took over those insectaries to privatize them. I took this photo in a biofactory in Turkmenistan where they were growing Habrabracon hebetor as a second line of defense for cotton bollworm to back up the Trichogramma releases.

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I saw that they knew what they were doing and the system worked great, just like it did in Coachella and Imperial Valleys 30years earlier before the pesticide companies helped the pink bollworm move into the area (pesticide sales went back up). Bayer pesticide company sales reps in Turkmenistan were pushing pyrethroid pesticides. The pest control experts knew that would cause terrible secondary pest outbreaks and get them on the pesticide treadmill. They knew pesticides would mess things up. Their focus was on sales numbers verses helping the farmers.

The Soviets proved in a huge area of central Asia, what my father had proved earlier–that it is possible to manage all pests of cotton, including cotton bollworm and tobacco budworm, in those two regions without pesticides. Meanwhile we watched as genetically engineered cotton was introduced with the Bt toxin engineered into the DNA of the plant. We knew that it is absolutely not necessary. Bt cotton was not created to solve an agricultural problem or bring a better technology. The best technology, natural biological control, was known and systematically destroyed. Bt cotton was created solely to increase profits for Monsanto.

Farmers have been and are being denied access to knowledge about cost-effective methods because pesticide companies literally burned the books on biocontrol. Monsanto and friends (that bought up all the seed so they can engineer the genomes and patent them) profit from pushing Bt seed on farmers that don’t return benefits. They control the universities and much of the farm press. Natural methods aren’t patentable, and do not provide a profit margin that allows us to do competitive marketing. Farmers need a strong desire to transition off pesticides when they don’t really have strong support from the universities. Farmers who are in a learning mode can do it.

Farmers and consumers: stop falling for the biotech lie that society needs the GMO seeds they are manipulating and patenting. Since government regulators are in biotech’s pocket, all we can do is reduce our use of what they have to sell. Stop buying GMO cotton – buy organic cotton, hemp, linen, silk, and wool or other fibers coming on the market. There is the thrift shop and creative ways to recycle fibers, like Patagonia’s Synchilla from soda bottles. With GMOs labeled, eating less GMO food is also going to have an impact. We need to boycott GMOs so we are not supporting the pesticide/GMO seed monopoly and for the sake of our health and the health of our environment.

Jan Dietrick – October 29, 2012

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Neem vs. Fleas

Everyone at Rincon-Vitova loves Duchess, the official Bug Farm dog, especially the fleas. Treating fleas on a bug farm is a little bit complicated, though. The standard treatment is insect growth regulators like Advantage, but using a long lasting insect growth regulator on a dog who wanders around the farm freely, getting pet by everyone, could spell trouble for the bug breeding operations going on.

It’s hard not to feel sympathy for Duchess when she noses her head between your knees, begging for some help scratching, so when I saw neem mentioned as a flea remedy I decided it was time for a product test.

Neem oil comes from the seed of Azadirachta indica, an Indian tree that has been used for pest control and medicine for around 3000 years. One chemical constituent of neem is azadiractin, a natural insect growth regulator. Unlike synthetic insect growth regulators, azadirachtin is completely biodegradable and breaks down in water after about a day. This meant that we could bathe Duchess with neem oil and not worry about someone petting her and contaminating one of our fly parasite or Lindorus production rooms.

I got instructions on making a neem shampoo from Discover Neem. I mixed up some neem oil with shampoo, then Jan and I took Duchess to the employee shower along with Bryce, our multitalented photographer extrordinaire. Duchess didn’t quite like the bath, but she was patient as we tried to saturate her fur with neem shampoo, then rinsed and rubbed her down with some straight neem oil for good measure. We had read that neem oil is also supposed to help flea irritated skin. Finally, we toweled her off and set her free. When she was dry, Duchess’ coat felt much softer and she was scratching a lot less.

One important detail to remember is that neem’s main action is insect growth regulation, which means it can stop immature fleas from maturing and mature fleas from reproducing. It can potentially suffocate insects, however, it doesn’t always kill adult fleas. In warm weather, the flea life cycle from egg to adult can be as short as a week. The best way to stop fleas from bugging your pet is to attack the fleas once every week or two, breaking the flea life cycle. A flea bath once a month is generally not enough to eradicate a flea infestation. In the weeks after Duchess’ bath we got side tracked by other projects and didn’t get to bathe her enough times to completely de-flea her, but the bath she got did cut down her flea population and gave her a break from itching.

I brought some neem oil home and tried it out on my indoor cat, Samus. Since she likes to hang out on my lap and give me her fleas, I had extra incentive to bathe her more regularly. She got 3 neem shampoo treatments, one every two weeks, and her fleas were under control – at least, until she escaped one day and got reinfested. Vaccumming throughly once a week and powdering my carpet with boric acid helped a lot, too.

In any honest discussion of neem I have to mention the smell. Neem oil is powerfully pungent, smelling vaguely but not quite like really strong Thai food. Besides inhibiting insect growth, neem is also repellent to many insects, and it’s not hard to see why. Duchess didn’t seem to mind the smell, but Samus is so offended by it that she ignores me for days when I neem her.

-Alia Tsang, Bug Farm intern

Vanishing bees

Oops the canaries have stopped singing!

Today we have honeybees dying in large numbers – colony collapse disorder (CCD). Could something as popular as the pesticide imidicloprid be hard on them? What does the die-off mean?

Old-time miners used to carry a caged canary down into the coal mine to check if the air was fit to breathe. The canary would breathe faster than the miners and would feel the effect of low oxygen or poisonous gas much sooner than the miner. It was a sensitive indicator of the environmental condition. When the canary fell to the bottom of the cage, it was time to drop everything and skedaddle out of the mine.

Some believe that the honeybee die-off is synonymous to the canary in the coal mine and an indictment of the way we do agriculture: too much pesticide sprayed on more and more land, destruction of natural habitats, genetically mutated plants that may carry environmental time bombs, and massive fields of one variety of plant – all leading to an unhealthy environment.

Others are suspicious of Bayer’s favorite chemical, imidacloprid, found in Admire, Merit, Provado, Bayer Advanced, etc… It is not an idle guess. This supposedly low-risk pesticide disorients bees at the level of 20 parts per BILLION according to Bayer’s published study. This pesticide is worth hundreds of millions of dollars in sales for Bayer, some of which reaches the pockets of Washington D.C. officials as a thank you for ensuring that the EPA does not release the test data on bees required for registration of the same pesticide. Finally there is talk that the newer generation Bayer pesticide clothianidin, Pancho, may be contributing to bee deaths as well. This new generation pesticide kills and disorients bees at even lower concentrations than imidicloprid.

It’s a shame how far commercial beekeeping has strayed from the roots of gently caring for bees’ needs. Modern beekeeping has to employ toxic chemicals to control diseases and pests in the hive, truck bees all the way across the continent to pollinate almonds in California, all the while exposing bees to toxic pesticides in commercial orchards, and feeding them plain sugar and soy flour after removing all their honey and pollen. Some claim that organic and biodynamic beekeepers don’t have CCD because their bees aren’t exposed to all of these stresses.

Well, there is not enough data to come to a conclusion, so our opinions are as good as the next guy’s. While I work on my next post about the natural remedies I know about, let me know what you think. Let’s discuss some of the organic options for caring for bees.

Ron


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