Bananas.org

Welcome to the Bananas.org forums.

You're currently viewing our message boards as a guest which gives you limited access to participate in discussions and access our other features such as our wiki and photo gallery. By joining our community, you'll have access to post topics, communicate privately with other members (PM), respond to polls, upload photos, and access many other special features. Registration is fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.

Go Back   Bananas.org > Banana Forum > Main Banana Discussion
The Facebook Platform
Register Photo Gallery Classifieds Wiki Chat Map Search Today's Posts Mark Forums Read

Main Banana Discussion This is where we discuss our banana collections; tips on growing bananas, tips on harvesting bananas, sharing our banana photos and stories.


Members currently in the chatroom: 0
The most chatters online in one day was 17, 09-06-2009.
No one is currently using the chat.

Reply   Email this Page Email this Page
 
LinkBack Thread Tools
Old 12-26-2017, 06:16 AM   #1 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Why are the leaves looking yellow?

This is the cold season here in Northern Thailand, the night temperature has fallen to around seven degrees Celsius and damp. I find that my Leb Mue nam and Gros Michel pseudostem leaves are rather yellow as you can see in the photos I took today. These new plants have been in the ground for eight months and have started flowering in some cases. Our sandy soil is pretty dry right now, we have been watering regularly but not overdoing it. The plants were fertilized with 15-15-15 and complements during the rainy season and they thrived. We are one month into the dry winter season. Are we doing anything wrong? Many thanks for any advice.



louis14 is offline   Reply With Quote Send A Private Message To louis14

Join Bananas.org Today!

Are you a banana plant enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Bananas.org is owned and operated by fellow banana plant enthusiasts. We strive to offer a non-commercial community to learn and share information. Receive all three issues from Volume 1 of Bananas Magazine with your membership:
   

Join Bananas.org Today! - Click Here


Sponsors

Old 12-26-2017, 08:37 AM   #2 (permalink)
banana cereal killer
 
beam2050's Avatar
 
Location: middleburg fl.
Zone: 9
Name: walkinbeam
Join Date: Sep 2016
Posts: 1,020
BananaBucks : 1,007
Feedback: 0 / 0%
Said "Thanks" 3,011 Times
Was Thanked 1,610 Times in 736 Posts
Said "Welcome to Bananas" 375 Times
Default Re: Why are the leaves looking yellow?

they got cold. you will lose the leaves but the plants should be ok.
beam2050 is offline   Reply With Quote Send A Private Message To beam2050
Old 12-26-2017, 08:46 AM   #3 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by beam2050 View Post
they got cold. you will lose the leaves but the plants should be ok.
Thanks, should we give them extra Nitrogen then, to help with leaf regeneration?
louis14 is offline   Reply With Quote Send A Private Message To louis14
Old 12-26-2017, 10:31 PM   #4 (permalink)
Al's Manini Farm
 
Location: Edmond, OK
Zone: 73034
Name: Al
Join Date: Oct 2014
Posts: 454
BananaBucks : 29,189
Feedback: 0 / 0%
Said "Thanks" 3,686 Times
Was Thanked 764 Times in 314 Posts
Said "Welcome to Bananas" 433 Times
Default Re: Why are the leaves looking yellow?

In my opinion 44.6 degrees Fahrenheit at night should not cause that problem. I think it’s something else.
__________________
Al
Al's Manini Farm
a.hulva@coxinet.net is offline   Reply With Quote Send A Private Message To a.hulva@coxinet.net
Old 12-27-2017, 08:08 AM   #5 (permalink)
 
Location: Cairo, Ga
Zone: 8b
Join Date: Aug 2016
Posts: 1,592
BananaBucks : 28,550
Feedback: 0 / 0%
Said "Thanks" 990 Times
Was Thanked 2,440 Times in 1,225 Posts
Said "Welcome to Bananas" 276 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by louis14 View Post
This is the cold season here in Northern Thailand, the night temperature has fallen to around seven degrees Celsius and damp. I find that my Leb Mue nam and Gros Michel pseudostem leaves are rather yellow as you can see in the photos I took today. These new plants have been in the ground for eight months and have started flowering in some cases. Our sandy soil is pretty dry right now, we have been watering regularly but not overdoing it. The plants were fertilized with 15-15-15 and complements during the rainy season and they thrived. We are one month into the dry winter season. Are we doing anything wrong? Many thanks for any advice.



What 'compliments' are you giving the plants? What is the soil Ph? ... This could be sulfur, iron, & magnesium deficiency. This may be due to a 'soil lockup' or irrigation water leching the minors away.

Try a test of foliar spray with the minor elements on a few of the plants to see if there is any immediate improvement of plant color and new leaves. Anyway, a foliar spraying with fertilizer & minors should help the plants until the cause is corrected.
__________________
edwmax is online now   Reply With Quote Send A Private Message To edwmax
Sponsors

Old 12-28-2017, 03:14 AM   #6 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by edwmax View Post
What 'compliments' are you giving the plants? What is the soil Ph? ... This could be sulfur, iron, & magnesium deficiency. This may be due to a 'soil lockup' or irrigation water leching the minors away.

Try a test of foliar spray with the minor elements on a few of the plants to see if there is any immediate improvement of plant color and new leaves. Anyway, a foliar spraying with fertilizer & minors should help the plants until the cause is corrected.
Thanks for your input
The soil PH is 6.5
The supplement is the green bag, was given every couple of weeks in the rainy season (may till oct)
Contains Magnesium, Sulphur, Iron, Calcium and more..
The locals are telling us not to worry, that this is a normal occurence in this season and that the plants are strong and will recover .. fingers crossed

louis14 is offline   Reply With Quote Send A Private Message To louis14
Old 12-28-2017, 06:44 AM   #7 (permalink)
 
Location: Cairo, Ga
Zone: 8b
Join Date: Aug 2016
Posts: 1,592
BananaBucks : 28,550
Feedback: 0 / 0%
Said "Thanks" 990 Times
Was Thanked 2,440 Times in 1,225 Posts
Said "Welcome to Bananas" 276 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by louis14 View Post
Thanks for your input
The soil PH is 6.5
The supplement is the green bag, was given every couple of weeks in the rainy season (may till oct)
Contains Magnesium, Sulphur, Iron, Calcium and more..
The locals are telling us not to worry, that this is a normal occurence in this season and that the plants are strong and will recover .. fingers crossed

Test foliar spraying the plants to see if they will green up.

You said:
Quote:
The plants were fertilized with 15-15-15 and complements during the rainy season and they thrived.
The irrigation is just an extension of the rainy season into the dry season. So you should be continuing the same fertilizer & compliments scheduled.

I think folar spraying of fertilizer may be better for you by reducing fertilizer loss & cost due to leeching.
__________________
edwmax is online now   Reply With Quote Send A Private Message To edwmax
Said thanks:
Old 12-28-2017, 07:01 AM   #8 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Absolutely, we currently use folear spraying in the dry season, much more efficient. We also have Longan trees so we already use that technique. Right now, it has been raining for two days so we have fed them all on the soil once more. Only the 8 months old Leb Mue Nam seem affected. The Namwah are currently looking fine but they have been over a year in the ground and are possibly in a place less exposed to a freak cooler gust of wind

Last edited by louis14 : 12-28-2017 at 07:17 AM.
louis14 is offline   Reply With Quote Send A Private Message To louis14
Said thanks:
Old 12-28-2017, 10:14 AM   #9 (permalink)
 
Location: Cairo, Ga
Zone: 8b
Join Date: Aug 2016
Posts: 1,592
BananaBucks : 28,550
Feedback: 0 / 0%
Said "Thanks" 990 Times
Was Thanked 2,440 Times in 1,225 Posts
Said "Welcome to Bananas" 276 Times
Default Re: Why are the leaves looking yellow?

Hummm .... how deep is the water level? Dig an 8" (20 cm) to 10" (25 cm) diameter hole about 3 ft (1 m) to 4 ft ( 1 1/4 m) deep. Measure the surface to water level while raining and about 1 & 2 days after rain has stop. ... I wondering if the roots are flooded and if raised planting beds are needed or would help for that field.
__________________
edwmax is online now   Reply With Quote Send A Private Message To edwmax
Said thanks:
Old 12-28-2017, 11:33 AM   #10 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by edwmax View Post
Hummm .... how deep is the water level? Dig an 8" (20 cm) to 10" (25 cm) diameter hole about 3 ft (1 m) to 4 ft ( 1 1/4 m) deep. Measure the surface to water level while raining and about 1 & 2 days after rain has stop. ... I wondering if the roots are flooded and if raised planting beds are needed or would help for that field.
🙄 Last time the well digger was here he went down to 120 meters without finding any significant water. I have dug a 5 meter deep 6000 M3 water reservoir next door to the bananas in question, no water whatsoever when digging down and had to film it with LDPE to hold water. Thanks anyway for the kind brainstorming.
Interesting to note that on the night of Dec 21st, the temperature on Doi Inthanon mountain, 2565 meters summit fell to minus 1C . Its only 50 clicks away and we could have had some unregistered cold drafts that night from the northwest which could explain sudden cold damage.
louis14 is offline   Reply With Quote Send A Private Message To louis14
Old 12-28-2017, 01:45 PM   #11 (permalink)
 
Location: Cairo, Ga
Zone: 8b
Join Date: Aug 2016
Posts: 1,592
BananaBucks : 28,550
Feedback: 0 / 0%
Said "Thanks" 990 Times
Was Thanked 2,440 Times in 1,225 Posts
Said "Welcome to Bananas" 276 Times
Default Re: Why are the leaves looking yellow?

General yellowing of the leaves is not cold damage. The cold effected parts of the leave will turn brown while the un-effected parts will stay green. See this post for reference What to do after cold damage? ... Frost bit or frozen parts of the leaf will turn dark green (cooked???), then blackish, then brown (dead) within a 2 or 3 of days.
__________________
edwmax is online now   Reply With Quote Send A Private Message To edwmax
Said thanks:
Old 12-28-2017, 01:50 PM   #12 (permalink)
 
Location: Cairo, Ga
Zone: 8b
Join Date: Aug 2016
Posts: 1,592
BananaBucks : 28,550
Feedback: 0 / 0%
Said "Thanks" 990 Times
Was Thanked 2,440 Times in 1,225 Posts
Said "Welcome to Bananas" 276 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by louis14 View Post
🙄 Last time the well digger was here he went down to 120 meters without finding any significant water. I have dug a 5 meter deep 6000 M3 water reservoir next door to the bananas in question, no water whatsoever when digging down and had to film it with LDPE to hold water. Thanks anyway for the kind brainstorming.
Interesting to note that on the night of Dec 21st, the temperature on Doi Inthanon mountain, 2565 meters summit fell to minus 1C . Its only 50 clicks away and we could have had some unregistered cold drafts that night from the northwest which could explain sudden cold damage.
A well driller is not looking for surface water or the surface water table. So water is ether draining way very slowly flooding the roots for days at a time; or draining away so quick the water is leching away the fertilizer & nutrients.
__________________
edwmax is online now   Reply With Quote Send A Private Message To edwmax
Said thanks:
Old 12-28-2017, 02:46 PM   #13 (permalink)
 
sputinc7's Avatar
 
Location: Palm Bay, Florida
Zone: 9b
Name: Steve
Join Date: Mar 2016
Posts: 1,314
BananaBucks : 38,768
Feedback: 3 / 100%
Said "Thanks" 335 Times
Was Thanked 2,214 Times in 915 Posts
Said "Welcome to Bananas" 282 Times
Default Re: Why are the leaves looking yellow?

I was thinking water problems... Bananas are much more sensitive to over watering in the cooler seasons. A light watering once a week should be plenty during cooler weather. (Which is anything under 65. Once it's over 65 degrees F 24 hours a day a few days it's safe to water more.)
__________________
If you lose your head and give up, you neither live nor win.




https://sputinc7.wixsite.com/covwc

Varieties I supposedly bought: Manzano, Cavendish, Blue Java, Sweetheart, and Gros Michel.
What it seems I actually have: Brazilian, Cavendish, Namwah, Dwarf Red, Gros Michel, Pisang Ceylon, Veinte Cohol and SH 3640, and American Goldfinger. FHIA 1, Paggi and FHIA 17... Always room for one more.
sputinc7 is offline   Reply With Quote Send A Private Message To sputinc7
Said thanks:
Old 12-28-2017, 03:17 PM   #14 (permalink)
banana cereal killer
 
beam2050's Avatar
 
Location: middleburg fl.
Zone: 9
Name: walkinbeam
Join Date: Sep 2016
Posts: 1,020
BananaBucks : 1,007
Feedback: 0 / 0%
Said "Thanks" 3,011 Times
Was Thanked 1,610 Times in 736 Posts
Said "Welcome to Bananas" 375 Times
Default Re: Why are the leaves looking yellow?

some of my bananas looked like his pic after it dipped down to 41f. they greened back up again when it got warmer. but some parts of the leaves turned yellow instead of green. the bananas that did it were all of my dwarf reds, gros michels and my kandarin. here is a picture taken about 2 weeks later of some of them.



also in the picture are namwas, mona lisa, manzano, Brazilian, sumatrana x, pisang raja, lady finger, sweetheart.

there is one not in the picture, my snow banana, the leaves turned in the mid 40s. they never greened back up again.

Last edited by beam2050 : 12-28-2017 at 03:51 PM.
beam2050 is offline   Reply With Quote Send A Private Message To beam2050
Said thanks:
Old 12-28-2017, 06:59 PM   #15 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Continued thanks to everyone for the invaluable shared experience.
We have not been watering more than once a week since the cold has arrived. As you can see, the soil looked really dry at the beginning of the week when I took the pic of the sword suckers. Yesterday and the day before we had continuous light rain and warmer temperature. Some of the leaves are starting to look like the one in the photo.


louis14 is offline   Reply With Quote Send A Private Message To louis14
Old 12-29-2017, 09:25 AM   #16 (permalink)
Fi sti elbide, worg ti!
 
Location: In a lake. In C. Florida.
Zone: 9 to 10
Name: T
Join Date: Nov 2011
Posts: 219
BananaBucks : 958
Feedback: 2 / 100%
Said "Thanks" 113 Times
Was Thanked 349 Times in 114 Posts
Said "Welcome to Bananas" 14 Times
Default Re: Why are the leaves looking yellow?

It's cold and dry weather stress.
It's that simple.
Most of my bananas look like that now. Some varieties look worse than others.
The solution is stable, warm, moist weather!
Until that happens, not much for you to do.
Feeding is a waste of time and money, when there is no heavy active growth.
__________________
Come visit my corner spot; read some interesting post, buy rare edible plants & animals
and maybe learn something!
T.Farms
bananaT is offline   Reply With Quote Send A Private Message To bananaT

Join Bananas.org Today!

Are you a banana plant enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Bananas.org is owned and operated by fellow banana plant enthusiasts. We strive to offer a non-commercial community to learn and share information. Receive all three issues from Volume 1 of Bananas Magazine with your membership:
   

Join Bananas.org Today! - Click Here


Sponsors

Old 12-29-2017, 09:47 AM   #17 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by bananaT View Post
It's cold and dry weather stress.
It's that simple.
Most of my bananas look like that now. Some varieties look worse than others.
The solution is stable, warm, moist weather!
Until that happens, not much for you to do.
Feeding is a waste of time and money, when there is no heavy active growth.
Thank you

I sure feel better reading your comment!

I now believe the problem was caused by Wind Chill

Cheers

Last edited by louis14 : 12-29-2017 at 04:07 PM.
louis14 is offline   Reply With Quote Send A Private Message To louis14
Said thanks:
Old 12-30-2017, 12:03 AM   #18 (permalink)
Pups Avaliable for Trade!
 
Tytaylor77's Avatar
 
Location: East Texas
Zone: 8b
Name: Ty
Join Date: Jun 2015
Posts: 1,136
BananaBucks : 16,777
Feedback: 9 / 100%
Said "Thanks" 3,734 Times
Was Thanked 2,785 Times in 948 Posts
Said "Welcome to Bananas" 374 Times
Default Re: Why are the leaves looking yellow?

Same here. A lot of mine look exactly like yours. It happens every year in the fall. Some varieties like Veinte Cohol, Nino, patupi, etc do this and others do not. My opinion it is cool weather stress and possibally lower humidity. Fall is my dry season in pure sand. So not a water issue for sure here!

Browning of the leaf edge and the leaf starting to curve down. Kinda like you would cup your hand palm down. That’s the sign i look for in overwatering or flooding to the roots. I’m sure there is a better way to explain it haha.

Don’t worry new leaves should look better soon! Good luck. Louis14
__________________
130+ Varieties!!. See profile for list. Help me add more!
Tytaylor77 is offline   Reply With Quote Send A Private Message To Tytaylor77
Old 12-30-2017, 01:16 AM   #19 (permalink)
banana cereal killer
 
beam2050's Avatar
 
Location: middleburg fl.
Zone: 9
Name: walkinbeam
Join Date: Sep 2016
Posts: 1,020
BananaBucks : 1,007
Feedback: 0 / 0%
Said "Thanks" 3,011 Times
Was Thanked 1,610 Times in 736 Posts
Said "Welcome to Bananas" 375 Times
Default Re: Why are the leaves looking yellow?

Quote:
Originally Posted by Tytaylor77 View Post

Dont worry new leaves should look better soon! Good luck. Louis14
if he's just startin to get a little cold he's going to look better a whole lot faster than us.
beam2050 is offline   Reply With Quote Send A Private Message To beam2050
Old 12-30-2017, 06:44 AM   #20 (permalink)
 
louis14's Avatar
 
Location: Northern Thailand
Join Date: Nov 2017
Posts: 237
BananaBucks : 10,978
Feedback: 0 / 0%
Said "Thanks" 125 Times
Was Thanked 453 Times in 114 Posts
Said "Welcome to Bananas" 0 Times
Default Re: Why are the leaves looking yellow?

The cold has passed by for now, 19C at night and 30C in the afternoon.

Last edited by louis14 : 01-03-2018 at 02:53 PM.
louis14 is offline   Reply With Quote Send A Private Message To louis14
Sponsors

Reply   Email this Page Email this Page






Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Leaves Yellow mswillis5 Banana Plant Health And Maintenance Topics 0 05-29-2014 11:15 AM
Rajapuri with yellow leaves eddiemunozep Main Banana Discussion 6 11-16-2013 07:02 PM
Maurelli yellow leaves Russski Banana Plant Health And Maintenance Topics 4 09-13-2013 07:50 AM
Yellow leaves on my citrus ? cherokee_greg Other Plants 9 04-12-2011 08:39 PM
Yellow leaves. Sailfish Main Banana Discussion 5 10-13-2008 02:12 PM


All times are GMT -5. The time now is 10:52 PM.





Follow us:
Twitter YouTube

All content © Bananas.org & the respective author.