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Weed control, management, ecology, and minutia
Comments:
by Brad Hanson
on March 18, 2016 at 1:35 PM
Interestingly, and adding further confusion to me, is that most sources indicated that peach and nectarine are the same species. Peach is Prunus persica; nectarine is Prunus persica var. nucipersica.  
 
Since the label indicates "nectarine, plum, cultivars, varieties, and/or hybrids of these" I'm still confused about whether peach is "in" or "out".  
 
I'll seek clarification on what, if anything, that botanical fact means for Broadworks and peach in California; however, I think the safe move is not to use it on peach for the time being.
by A McKay PhD
on April 18, 2016 at 10:21 AM
Mate,  
After reading the label I would say that peaches are in. The same argument would apply to cherries, apricots, pluots etc. They are stone fruit so should be in. If peaches are out because they are not specifically listed then cherries and apricots should be out too.
by mahesh karoshi
on November 9, 2017 at 10:14 AM
i used broadworks in my almond orchard, my advisor told me to use 6 ounce/acre, i used 32oz per 150 gallon tank. It burned at least 100 trees. After that my advisor told me never use broadworks.
Reply by Brad Hanson
on November 9, 2017 at 1:04 PM
Hi Mahesh,  
You didn't provide quite enough information to determine your rate. What GPA was your equipment calibrated at? Or, how many acres do you treat with one 150 gal tank load?  
 
If you apply 50 GPA, you'd treat 3A per load and would need 18 oz of that herbicide in the tank to achieve 6 fl oz/A. If you apply 30 GPA, you'd treat 5A per load, and would need 30 fl oz of product to achieve the target rate.  
 
From the other angle, if you mixed 32 oz of the product in 150 gal, you'd need to apply each load to 5.33 A (treated acres, which I assume is strips only). So given that, apply 150 gal of spray solution to 5.33 A would give you 28.15 GPA. Is that what you calibrate your equipment at? If significantly different that that, you may have a rate issue (particularly if you treat fewer acres than that).  
 
You didn't mention where you are, but if your site has very sandy or coarse soils and if the application was made during the irrigation season, those factors can also influence the possibility of crop response.  
 
Good luck,  
Brad
 
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