Being that you're smoking this stuff, what is the carrier (powder) in that BT powder? Betcha it's talc. You don't want that stuff in your buds. Here's a ditty on BT. Page 5 is an important read -
http://www.puyallup.wsu.edu/~Linda%20Chalker-Scott/Horticultural%20Myths_files/Myths/magazine%20pdfs/BtBiopesticides.pdf
Hey UB! I'm still in the grow and looking at the finish line. Looks like I will harvest something this year.
As to the inert ingredients in the organic BT formulation I used, you had me concerned. I read the link you gave as well as some other information on the US Department of Agriculture's website. Both of those sites say pretty much the same thing, and actually is stated best in the link you gave me:
"Like the active bacterial ingredient, the inert ingredients in Bt formulations have also been studied and modified for safety. Newer formulations employ preservatives, like sorbitol, that are safer than the xylene used decades ago. Likewise, granular and microcapsule formulations reduce the inhalation hazard. Volatile agents associated with some Bt formulations do not appear to constitute a significant health hazard. In the 50 years that Bt has been used for insect control, there have been few reports of human pathogenicity, ..."
Since talc is a known carcinogen when inhaled, I can't see it being used. Either the link you gave would have indicated this, or the Dept. of Ag would on their website. Both your link and the Dept of Ag state that there is not a risk to humans from inhalation. Maybe you read it wrong? Or maybe I did, lol. I am pretty stoned right now after all. If so let me know.
Pyrethrin, a broad spectrum pesticide, gives excellent residual control for caterpillars and larvae, is super low toxic, and cheap. You can buy it as Spectracide or if you're commercial like me buy Tenguard by the 1.5 gallon. Make sure your spray contains a surfactant (spreader-sticker) or it will be ineffective. The surfactant may be included in the product. If so the label will have some wording like "rain fast in 2 hours" or you can buy a non-ionic surfactant like Red River, or you can take it in the hiney and buy some super high priced ionic surfactant from a cannabis vendor.
I have used Spectracide this year and just this last week hit them with some Seven. For a blooming plant, the literature states I am good for up to 3 days before harvest, but I think I am not going to use any insecticide the last couple of weeks. I am going to have to use Bt right up until harvest or until the moths and butterflies move somewhere else.
Sorry about the deer problem! I've had grasshoppers strip one main cola, so don't feel too bad. Only recourse is accepting the loss or protection using t-posts and wire to cordon off the area.
Yeh, I put up wire for a bit, but it just made the site too easily identifiable as a grow to me, so I took the fence back down. Since the deer only tries to eat a little bit every couple of weeks or so, I'll just have to accept the fact that before I am out of there he will probably munch on another ounce or so. And I'll keep Liquid Fence on them in order to make sure he doesn't get a real taste for them, lol. That and the garlic seems to be helping to keep him away, but every once in a while he just decides the hell with it and eats a branch. I haven't tried the fishing string bit yet, but I have some extra stakes and could do that. Might put that up when I go back out there next week.
Am losing leaves like a mofo mainly from neglect and a lack of N. Am slowly getting a handle on it with high N foods (ammonium sulfate, 35-5-10, 5-1-1). I'm thinking the microbial activity of my wimpy, raw potting soil I threw together is robbing my plant of required N to keep it green. IOW, NPK ratios must be geared towards your soil structure/profile.
Happy harvest,
UB
Yeh, one of my plants, the Big Bud, is starting to lose a few leaves to nitrogen deficiency. I have increased her nitrogen input to help stave off anymore yellowing leaves. As we both know, healthy leaves breed nice fat buds.
The two mexican girls are definitely the same strain, but are showing different phenotypes. The larger of the two is probably the absolute healthiest plant out of the three. It is showing good separation of cola branches, hasn't needed anything other than a support stake for when it was younger and is growing some really healthy looking, hairy, fat buds. The smaller of the two has had issues with borers and recently had a broken branch that had to be staked and tied up. Its buds are also smaller as are its leaf system, both in width and length.
But thankfully, after all of the issues I have had this grow (many of those issues which were self-inflicted), it looks as if I am going to finish out the outdoor growing season with three healthy ladies.
Then its on to the drying/curing/manicuring process ... more fun ahead, lol.