citrus pest problem

b54red · February 15, 2014

I have been growing a few lemons and limes in containers for the past few years and this year I am noticing a lot of leaf miners. I have never sprayed them with anything but they are getting pretty bad on a couple of them. One plant has almost no healthy looking leaves now because of them. Does anyone have a treatment for leaf miners that works on citrus?

Bill

Worth1 · February 15, 2014

Bill I dont know of anything but removing the effected leaves Texas A&M says not to do it.

You need to treat the new growth so they wont infest it.

Here is a link.
http://www.google.com/url?sa=t&rct=j...TuavshhfyoJvzQ

Worth

Hermitian · February 15, 2014

Alternate monthly between Spinosad and Green Light brand Fruit Tree Spray. Do not remove affected leaf(s). If the plant can't use them for photosynthesis it will drop them. This spray program will keep the damage on new growth to less than 10%. For better control you'll need to add a nicotinoid such as Assail to the regime.

DavidP · February 15, 2014

http://www.ipm.ucdavis.edu/PMG/PESTN...tml#MANAGEMENT

UC pest notes might be of help

Hermitian · February 15, 2014

In California, there are no documented successes controlling Citrus Leaf Miner with biological, cultural, or physical controls except where plants are being grown in hermetically sealed greenhouses.

b54red · February 17, 2014

Thanks all. I guess I'll just have leaf miners.

Bill

epsilon · February 18, 2014

Our local nursery (For those in the area:park view) Next to UCR (UC Riverside) recommended Spinosad as a preventative control measure.

Also Reading some info on it it seems that most pollinators are unaffected by the stuff after it dries, so they're fine unless it is directly sprayed onto them, Or just apply at night so that it will be dried before the bees and other things start becoming active in the morning.

I'm hesitant on the nicotinoids as recent scientific papers have been pointing to these as being at least partially responsible for the rise of sudden colony collapse syndrome occurring with honey bee populations. But that's just my personal opinion.

Hermitian · February 18, 2014

Quote:

Originally Posted by epsilon

...
I'm hesitant on the nicotinoids as recent scientific papers have been pointing to these as being at least partially responsible for the rise of sudden colony collapse syndrome occurring with honey bee populations. But that's just my personal opinion.

That's true about the nicotinoid Imidacloprid where used in seed coatings (e.g., corn). For awhile the Asian Citrus Psyllid control program was requiring growers and nurseries to apply it to Citrus (myself included). Now we have choices. The nicotinoid in Assail is Acetamiprid - a much friendlier approach when it comes to bees, and a more effective on leaf penetration for leaf miners.

Putting all nicotinoids in the same impact category is like saying all pyrethroids are the same. In reality, some are nasty that I'd never use in my garden but a few of them are part of my IPM program.

epsilon · February 19, 2014

Quote:

Originally Posted by Hermitian

That's true about the nicotinoid Imidacloprid where used in seed coatings (e.g., corn). For awhile the Asian Citrus Psyllid control program was requiring growers and nurseries to apply it to Citrus (myself included). Now we have choices. The nicotinoid in Assail is Acetamiprid - a much friendlier approach when it comes to bees, and a more effective on leaf penetration for leaf miners.

Putting all nicotinoids in the same impact category is like saying all pyrethroids are the same. In reality, some are nasty that I'd never use in my garden but a few of them are part of my IPM program.

It seems like my base of knowledge has lapsed in this area. And since there are now options, I will have to dig more research papers up and definitely reevaluate my stance on the the use of Nicotinoid compuonds as part of my own IPM program. Granted I'm trying to use the minimal amount of chemical controls possible. This is a good reminder that everything must be evaluated on an individual basis. Thanks Hermitanfor this poignant reminder.

Sun City Linda · February 18, 2014

The big honkin grasshoppers have developed a taste for my citrus leaves.

Worth1 · February 18, 2014

Quote:

Originally Posted by Sun City Linda

The big honkin grasshoppers have developed a taste for my citrus leaves.

The deer are eating mine as fast as they can grow I just about give up.

Worth

Sun City Linda · February 19, 2014

Quote:

Originally Posted by Worth1

The deer are eating mine as fast as they can grow I just about give up.

Worth

Well, I bet you can't get them with your shoe....

Hermitian · February 18, 2014

Quote:

Originally Posted by Sun City Linda

The big honkin grasshoppers have developed a taste for my citrus leaves.

My neighborhood is patrolled by battalions of Blue Jays, Mockingbirds, Orioles, and Phoebes. The grasshoppers don't stand a chance and are simply not seen.

Sun City Linda · February 19, 2014

Quote:

Originally Posted by Hermitian

My neighborhood is patrolled by battalions of Blue Jays, Mockingbirds, Orioles, and Phoebes. The grasshoppers don't stand a chance and are simply not seen.

I have a very large cat, "Kitty" that my kids call a panther. The good news is rats are now a nonissue. The bad news is, birds pretty much just circle or stay up on the power lines.

namwah · February 20, 2014

the big grasshoppers here in central florida are probably the Lubber. These are some tough, prolific critters. Nothing seems to eat them and they laugh at any insecticide. A well placed brick works. I also use scissors. Gross but effective.

February 15, 2014	#1
b54red Tomatovillian™ Join Date: Sep 2009 Location: Alabama Posts: 7,068	citrus pest problem I have been growing a few lemons and limes in containers for the past few years and this year I am noticing a lot of leaf miners. I have never sprayed them with anything but they are getting pretty bad on a couple of them. One plant has almost no healthy looking leaves now because of them. Does anyone have a treatment for leaf miners that works on citrus? Bill

February 15, 2014	#3
Hermitian BANNED Join Date: Dec 2011 Location: Vista, CA Posts: 1,112	Alternate monthly between Spinosad and Green Light brand Fruit Tree Spray. Do not remove affected leaf(s). If the plant can't use them for photosynthesis it will drop them. This spray program will keep the damage on new growth to less than 10%. For better control you'll need to add a nicotinoid such as Assail to the regime. __________________ Richard _<\|\|>_

February 15, 2014	#5
Hermitian BANNED Join Date: Dec 2011 Location: Vista, CA Posts: 1,112	In California, there are no documented successes controlling Citrus Leaf Miner with biological, cultural, or physical controls except where plants are being grown in hermetically sealed greenhouses. __________________ Richard _<\|\|>_

February 15, 2014	#2
Worth1 Tomatovillian™ Join Date: Feb 2006 Location: Den of Drunken Fools Posts: 38,539	Bill I dont know of anything but removing the effected leaves Texas A&M says not to do it. You need to treat the new growth so they wont infest it. Here is a link. http://www.google.com/url?sa=t&rct=j...TuavshhfyoJvzQ Worth

February 15, 2014	#4
DavidP Tomatovillian™ Join Date: Jun 2011 Location: Riverside, Southern California, USDA 9b, Sunset 19 Posts: 63	http://www.ipm.ucdavis.edu/PMG/PESTN...tml#MANAGEMENT UC pest notes might be of help

February 17, 2014	#6
b54red Tomatovillian™ Join Date: Sep 2009 Location: Alabama Posts: 7,068	Thanks all. I guess I'll just have leaf miners. Bill

February 18, 2014	#7
epsilon Tomatovillian™ Join Date: Aug 2012 Location: Desert CA Posts: 400	Our local nursery (For those in the area:park view) Next to UCR (UC Riverside) recommended Spinosad as a preventative control measure. Also Reading some info on it it seems that most pollinators are unaffected by the stuff after it dries, so they're fine unless it is directly sprayed onto them, Or just apply at night so that it will be dried before the bees and other things start becoming active in the morning. I'm hesitant on the nicotinoids as recent scientific papers have been pointing to these as being at least partially responsible for the rise of sudden colony collapse syndrome occurring with honey bee populations. But that's just my personal opinion.

February 18, 2014	#10
Sun City Linda Tomatovillian™ Join Date: Mar 2011 Location: SoCal Inland Posts: 2,705	The big honkin grasshoppers have developed a taste for my citrus leaves.

February 20, 2014	#15
namwah Tomatovillian™ Join Date: Mar 2013 Location: palmetto, florida Posts: 47	the big grasshoppers here in central florida are probably the Lubber. These are some tough, prolific critters. Nothing seems to eat them and they laugh at any insecticide. A well placed brick works. I also use scissors. Gross but effective.