Another Aphid question

Gobig_or_Gohome_toms · June 9, 2008

So I checked my infected Black Krim tonight and there were still some aphids on the plant so I picked one off and it was still alive.

My question is since they are on the under sides of the leaves it is hard to get the spray on those will the spray on the top still kill them or does the spray have to hit the aphids? It is of course hard to use a spray bottle upside down to get the underside of the leaves.

One additional question is will they eventually spread to the other tomatoes?

Craig

Ozark · June 9, 2008

You'll have to hit the underside of the leaves where the aphids are. That's hard to do, and I use a pump-up garden sprayer with a mix of water and Sevin concentrate. Set the spray on almost a hard stream and really blast it in there.
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"One additional question is will they eventually spread to the other tomatoes?"
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Yep, and soon rather than eventually.

Gobig_or_Gohome_toms · June 9, 2008

I will have to bust out the sprayer next time I treat them, should I wait or do it now since I just sprayed yesterday?

Ozark · June 9, 2008

If you don't think you got them yesterday, I'd spray again right away.

Make sure there's never been herbicide in your sprayer. I have two sprayers, one marked "Bugs and Fertilizer" and one marked "Weed Killer".

You SURE don't want to get that mixed up.

Gobig_or_Gohome_toms · June 9, 2008

I have only used it once with deck wash so I may need to get another one

Ozark · June 10, 2008

Deck wash doesn't sound too bad - the active ingredients are probably bleach, and maybe mild muriatic acid.

You might rinse it out several times with water, then spray some tender plant you don't care about - a petunia or something. There shouldn't be any damage to the plant, but you'd know for sure if the sprayer's safe within a day or two.

If a sprayer's ever held herbicide, though, I'd never use it for anything else.

ChuckBartok · June 10, 2008

Don't forget to consider some Green Lacewing Larvae releases.

Once you have balanced the Aphis will be kept at bay.
At least below an Economic threshold

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June 9, 2008	#1
Gobig_or_Gohome_toms Tomatovillian™ Join Date: Jan 2008 Location: Zone 4 Lake Minnetonka, MN Posts: 967	Another Aphid question So I checked my infected Black Krim tonight and there were still some aphids on the plant so I picked one off and it was still alive. My question is since they are on the under sides of the leaves it is hard to get the spray on those will the spray on the top still kill them or does the spray have to hit the aphids? It is of course hard to use a spray bottle upside down to get the underside of the leaves. One additional question is will they eventually spread to the other tomatoes? Craig

June 10, 2008	#7
ChuckBartok Tomatovillian™ Join Date: May 2008 Location: Northern California Posts: 83	Are the Aphids gone....? Don't forget to consider some Green Lacewing Larvae releases. Once you have balanced the Aphis will be kept at bay. At least below an Economic threshold Join our Free Newsletter, soon be published Bi-monthly www.beginnersmarketingclass.com/rincon.html

June 9, 2008	#2
Ozark Tomatovillian™ Join Date: Jan 2008 Location: Ozark, Mo. Posts: 201	You'll have to hit the underside of the leaves where the aphids are. That's hard to do, and I use a pump-up garden sprayer with a mix of water and Sevin concentrate. Set the spray on almost a hard stream and really blast it in there. ------------------ "One additional question is will they eventually spread to the other tomatoes?" ------------------ Yep, and soon rather than eventually.