Newbie needs help

Everything About Tomatoes
CW!
Reactions: 3
Posts: 4
Joined: Sat Nov 21, 2020 9:47 am
Contact:

Newbie needs help

#1

Post: # 34377Unread post CW!
Sat Nov 21, 2020 9:52 am

Help! This is my first crop of tomatoes and I'm lost. I've spend days researching tomato problems and diseases, and I guess I'm just not experienced enough to figure out. These are hydroponic tomatoes I have attached a picture, if anyone can provide any guidance - thanks!
leaf1.png
leaf1.png (1.45 MiB) Viewed 282 times
leaf1.png
leaf1.png (1.45 MiB) Viewed 282 times
0

User avatar
Tormato
Reactions: 373
Posts: 558
Joined: Thu Dec 12, 2019 3:14 pm
Contact:

Re: Newbie needs help

#2

Post: # 34392Unread post Tormato
Sat Nov 21, 2020 12:20 pm

I know next to nothing about plant problems. But, the picture looks to me like the underside of leaves are purple. That may mean a phosphorus deficiency.
0

User avatar
MissS
Reactions: 1390
Posts: 2275
Joined: Fri Dec 13, 2019 4:55 am
Location: Wisconsin Zone 5b
Contact:

Re: Newbie needs help

#3

Post: # 34411Unread post MissS
Sat Nov 21, 2020 2:52 pm

It's hard to tell if that purple is due to the light or a condition of the plant. Tormato is right that phosphorus deficiencies due cause purple leaves. I think if you posted in the Hydroponics forum which you can find in the third section of the home page, that you would get some better help for growing in your situation. Another place to post would be in the Diseases, Pests, and Cures forum which is in the second section of the home page. More pics and information would help too. Are those leaves cured? What temperature are you growing at? What fertilizers are you using?
0
~ Patti ~
AKA - Hooper

User avatar
Shule
Reactions: 473
Posts: 1145
Joined: Thu Dec 12, 2019 3:29 pm
Location: SW Idaho, USA
Contact:

Re: Newbie needs help

#4

Post: # 34415Unread post Shule
Sat Nov 21, 2020 4:51 pm

It might be edema caused by a combination of mites and conditions, but it's hard to tell. Do the yellow spots ever raise out like bumps?

Lowering the temperature and/or humidity, and/or increasing ventillation might help.
0
Location: SW Idaho, USA
Climate: BSk
USDA hardiness zone: 6
Elevation: 2,260 feet

User avatar
Shule
Reactions: 473
Posts: 1145
Joined: Thu Dec 12, 2019 3:29 pm
Location: SW Idaho, USA
Contact:

Re: Newbie needs help

#5

Post: # 34416Unread post Shule
Sat Nov 21, 2020 4:58 pm

Or, it might be downy mildew. It's hard to say.
0
Location: SW Idaho, USA
Climate: BSk
USDA hardiness zone: 6
Elevation: 2,260 feet

User avatar
Nan6b
Reactions: 704
Posts: 1184
Joined: Tue Dec 10, 2019 2:58 pm
Location: Pittsburgh, PA
Contact:

Re: Newbie needs help

#6

Post: # 34417Unread post Nan6b
Sat Nov 21, 2020 5:16 pm

Don't be worried if you're mystified. If you look up your symptoms on the internet you'll narrow the problem down to about 20 different things.

CW!
Reactions: 3
Posts: 4
Joined: Sat Nov 21, 2020 9:47 am
Contact:

Re: Newbie needs help

#7

Post: # 34439Unread post CW!
Sun Nov 22, 2020 10:09 am

I'd like to thank everyone that replied!

I already lowered the temperature and increased ventilation, thanks Shule. I'm also going to do a water replacement.

The "purple" leaves are probably due to the LED lights (they have that purple glow from blue & red LEDs).

I was thinking downy mildew, but it doesn't match some of the symptoms - "The center of the spots eventually turns brown, bordered by yellow margins" - not happening.

I do have 3 varieties of tomatoes in close proximity - St. Pierre, Brandywine, and Tappys. I'm researching disease resistance, because the Tappys show almost no symptoms, while the St. Pierre are the worst.

I'll probably treat for downy mildew as a precaution.

Thanks all!
0

User avatar
AZGardener
Reactions: 171
Posts: 303
Joined: Wed Dec 11, 2019 9:12 am
Location: Arizona, USA
Contact:

Re: Newbie needs help

#8

Post: # 34478Unread post AZGardener
Mon Nov 23, 2020 9:05 am

Do the brown spots have circles like rings of a tree? You may have to look closely. If so, and it's got a yellow margin it may be early blight. But, from the photo I don't see any brown spots, just yellow ones.
If there are no circles in the brown spots, then it could be mites causing the yellow spots. You may need to inspect the underside of the leaves with a magnifying glass to see them.
0
USDA Zone 9b
Average Rainfall 9.5 inches
Climate: Sonoran Desert

User avatar
GoDawgs
Reactions: 997
Posts: 855
Joined: Thu Dec 12, 2019 6:38 am
Location: Zone 8a, Augusta GA
Contact:

Re: Newbie needs help

#9

Post: # 34482Unread post GoDawgs
Mon Nov 23, 2020 10:08 am

If all else fails, take a sample to your extension agent. They'll need the plant material (not a photo) to look at under the microscope; at least they do here in Georgia.
1

CW!
Reactions: 3
Posts: 4
Joined: Sat Nov 21, 2020 9:47 am
Contact:

Re: Newbie needs help

#10

Post: # 34600Unread post CW!
Wed Nov 25, 2020 10:49 am

Great help, thanks. In fact the spots do not have rings, which actually would have made identification easier! I'll also check for mites.

GoDawgs: I googled "extension agent", had never heard the term before. New Mexico (my home) does have this in the university system, unfortunately the closest one is 100 miles away. I might still contact them, though.
0

User avatar
AZGardener
Reactions: 171
Posts: 303
Joined: Wed Dec 11, 2019 9:12 am
Location: Arizona, USA
Contact:

Re: Newbie needs help

#11

Post: # 34618Unread post AZGardener
Wed Nov 25, 2020 1:21 pm

CW! wrote:
Wed Nov 25, 2020 10:49 am
Great help, thanks. In fact the spots do not have rings, which actually would have made identification easier! I'll also check for mites.

GoDawgs: I googled "extension agent", had never heard the term before. New Mexico (my home) does have this in the university system, unfortunately the closest one is 100 miles away. I might still contact them, though.
Did you search for your county's extension office? You may have one in your county, worth a look.
1
USDA Zone 9b
Average Rainfall 9.5 inches
Climate: Sonoran Desert

CW!
Reactions: 3
Posts: 4
Joined: Sat Nov 21, 2020 9:47 am
Contact:

Re: Newbie needs help

#12

Post: # 34656Unread post CW!
Wed Nov 25, 2020 10:03 pm

The extension office advice is some of the best advice I've ever received. This morning, I didn't even know what an extension agent/office was. I googled NM university (I live in New Mexico), took a little while finding it because it's not really part of the education part of the university, but it was there: a county extension office, and one of their specialties is agriculture and farming! They support the whole county I'm in (which is generally rural).

Here's what floors me totally: I contacted them about my tomato crop problems, and they said they would love to help me - AND THEY DO HOUSECALLS. They prefer seeing the farming in progress, not just the plants.

Only downside is the person who does agriculture at their office is out on maternity leave. The person that emailed me said she "was going to get right on it" so see what they could do.

Anyway, thanks for the totally unexpected advice.

User avatar
AZGardener
Reactions: 171
Posts: 303
Joined: Wed Dec 11, 2019 9:12 am
Location: Arizona, USA
Contact:

Re: Newbie needs help

#13

Post: # 34685Unread post AZGardener
Thu Nov 26, 2020 10:57 am

CW! wrote:
Wed Nov 25, 2020 10:03 pm
The extension office advice is some of the best advice I've ever received. This morning, I didn't even know what an extension agent/office was. I googled NM university (I live in New Mexico), took a little while finding it because it's not really part of the education part of the university, but it was there: a county extension office, and one of their specialties is agriculture and farming! They support the whole county I'm in (which is generally rural).

Here's what floors me totally: I contacted them about my tomato crop problems, and they said they would love to help me - AND THEY DO HOUSECALLS. They prefer seeing the farming in progress, not just the plants.

Only downside is the person who does agriculture at their office is out on maternity leave. The person that emailed me said she "was going to get right on it" so see what they could do.

Anyway, thanks for the totally unexpected advice.
Good news! Let us know how it goes.
0
USDA Zone 9b
Average Rainfall 9.5 inches
Climate: Sonoran Desert

User avatar
MissS
Reactions: 1390
Posts: 2275
Joined: Fri Dec 13, 2019 4:55 am
Location: Wisconsin Zone 5b
Contact:

Re: Newbie needs help

#14

Post: # 34694Unread post MissS
Thu Nov 26, 2020 1:28 pm

Gosh NM must have the best Extension Service in the country. I have NEVER heard of them making house calls before.
1
~ Patti ~
AKA - Hooper

Post Reply

Return to “Tomato Talk”

Who is online

Users browsing this forum: No registered users and 1 guest