Beauveria bassiana Strain GHA
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Beauveria bassiana Strain GHA kills insects, non-selectively. The target pests are several varieties of the following: scarab beetles, leaf-feeding beetles (including Colorado potato beetle), whitefly, aphids, thrips, psyllids, mealy bugs, leafhoppers and plant hoppers, weevils, plant bugs (including chinch, lygus and flea hoppers), borers, leaf-feeding insects, grasshoppers, locusts and Mormon crickets, stem-boring lepidoptera (including European and Southwestern corn borer).
How to Use: The liquid and powder form of the strain can be combined and spread with compost teas or compost extracts. Make sure the temperature is between 50 to 85 degrees F. Effectiveness is in two days. Then repeat if needed. Since it is not a pathogen to humans, harvests can generally commence a day or so after application. Comply with the directions on the bottle.
Where to Get and Costs: Any hydroponic store carries it or knows where to order it. It comes in two forms, a liquid form that needs to be refrigerated and a powder form. The cost is about $130 per quart of the liquid form. One quart covers about an acre once diluted. The liquid form has an expiration date. The powder from (22WP) has a long shelf life.
Products available
BotaniGard 22WP, Wettable Powder Mycoinsecticide (http://www.bioworksinc.com/products/shared/botanigard.pdf)
Mycotrol O (BioWorks) Beauveria bassiana strain GHA ( http://www.bioworksinc.com/products/mycotrol-o.php)
BotaniGard (BioWorks) Beauveria bassiana strain GHA (http://www.bioworksinc.com/products/botanigard-es.php)
(Laverlam International) Beauveria bassiana strain GHA (http://www.laverlamintl.com/)
Warnings: This is basally a non-selective pesticide. It also kills beneficials….. i.e. wasps, honey bees, etc…
More Information
Beauveria bassiana is a fungus that is commonly found in soils worldwide. Insects vary in susceptibility to different strains. Strains have been collected from different infected insects and cultured to create a particular product for commercial use. There are two commonly used strains, GHA and ATCC 74040. These products are produced through fermentation. The spores (conidia) are extracted and formulated into a sprayable product and powder.
Beauveria bassiana kills the pest by infection as a result of the insect coming into contact with fungal spores. An insect can come into contact with the fungal spores in several ways: by having the spray droplets land on its body, by moving on a treated surface, or by consuming plant tissue treated with the fungus (the latter is not a major method of uptake). Once the fungal spores attach to the insect’s skin (cuticle), they germinate sending out structures (hyphae) that penetrate the insect’s body and proliferate. It may take 3-5 days for insects to die, but infected cadavers may serve as a source of spores for secondary spread of the fungus. High humidity and free water enhance activity of the conidia and the subsequent infection of the insect. Fungal spores are readily killed by solar radiation and infect best in cool to moderate temperatures.
Because the spores may have a short life, it is important that the spray or spray deposit has sufficient opportunity to contact the insect. Therefore, good coverage is essential with a large number of droplets containing a high concentration of spores. Care should be taken to apply the material to the undersides of the leaves or wherever the pest species primarily occurs. For insects that bore into a plant (e.g. the European corn borer), control will be very difficult. For best results, applications should be made during the early growth stages of the insect before much damage has occurred, as it may take several days for the insect to die. Speed of kill depends on the number of spores contacting the insect, insect age, susceptibility and environmental conditions.
One formulation of B. bassiana, Mycotrol™, is reported to be sensitive to high temperatures with best results at application temperatures between 70 and 80°F. Slow growth at warmer temperatures may make this a poor option for growers in southern states.
[...] For more Information on Beauveria bassiana Strain GHA and how to use it, Click Here [...]
[...] For more Information on Beauveria bassiana Strain GHA and how to use it, Click Here [...]
[...] For more Information on Beauveria bassiana Strain GHA and how to use it, Click Here [...]
[...] For more Information on Beauveria bassiana Strain GHA and how to use it, Click Here [...]
The product information is out of date. New manufacturer of the Mycotrol/BotaniGard Beauveria is Laverlam International with distribution by BioWorks, Rochester NY. I do not believe Naturalis is available in US anymore; any product for sale in US may be very old and poor viability (quality). There is a temperature limitation to these fungi, but upper limit is really 95-98 F. At the same time the actual temperature on the leaf surface may be much lower due to the cooling effect of evapotranspiration by leaves.. That’s why I had good efficacy with Beauveria against whiteflies in AZ melons, and cotton, when air temperatures were in excess of 120 F. For small, stationery insects like immature whiteflies coverage and delivery to the exact location of the insects is very important: “location, location location” Also the half life (time to kill half the sprayed spores of Beauveria) on sun-exposed leaf surfaces is 1.5-2 days, but on leaf undersides, esp. in good canopies with lots of internal shading persistence can be as long as 10 days.
PS that photo of the microorganisms is of bacteria. not Beauveria
Someone is paying attention. I love it!!!! In fact they are still selling both versions of Beauveria. I went on to the website of BioWorks and they are still selling old and new. http://www.bioworksinc.com/products/mycotrol-o.php. What is pictured is a “wet” version. It has an expiration date of August 1, 2011. And the bottle has to be kept in a refrigerator. http://www.laverlamintl.com/ I have prorogated Beauveria in the past. It’s not hard. The mushroom flower looks like a melted down “V” shaped cone. Spores fly in the wind. There is another product in the same category. It is called BotaniGard 22WP, Wettable Powder Mycoinsecticide. This has a longer shelf life. I have not bought any, yet. But I’m looking forward to it.
About using Beauveria at elevated temperatures, I have not done that. I mix Beauveria in my compost tea and then do a leave spray. It is very effective. I have see Beauveria “flowers” left on the ground or on the side of tree trunk 3 or4 weeks later. The temperatures in CA do not get that high for long periods of time. When I do apply Beauveria, it is during the winter and in between rain spells. This help keep the fungi alive for a bit longer. There is one problem I have suggesting using Beauveria. It is not a very selective pesticide. It kills good insects as well. Using Beauveria reminds me of using DDT.
Thanks for pointing out the wrong picture. Currently, I’m moving over all of my pages and pictures from the old website to the new one. When you do 10 or 15 posts a day, everything begins to look the same.
By the way, do you have a good picture of Beauveria? The one that was in the posting is from something else. I never had a good picture of Beauveria. I suppose I could break down and make one.
[...] For more Information on Beauveria bassiana Strain GHA and how to use it, Click Here [...]
dear sir,
im a student of Ph.d studies and im doing research on entomopathogenic fungus so i require your product sample for research work so plz snd me a sample for continueing my research work.if u snd me a sample then i will be very thankful to you and you are my great well wisher in my research work.tahnks
husnian nawaz
Ph.D student
institute of agricultural sciences
university of the punjab
lahore
0923338753242