Planted some popcorn a month ago and now the plants have 4-5 leaves. They are tall and weak - most of them have one leaf that has broken near the stem but is still alive - all those leaves have some white dust like substance in the thing in the middle of the leaf that supports it. Also, all but the newest leaves are going brown at the tips - lower ones the most.

Some pictures:
Plant 1 - http://img408.imageshack.us/img408/4...nt1pic1oz8.jpg
http://img170.imageshack.us/img170/2...nt1pic2gb3.jpg
Plant 2 - http://img186.imageshack.us/img186/2563/plant2zd7.jpg

The window faces south-west. Fertilized it once, with the one you mix in the water, didn't help though. May the problem be the cold air from the window that is open very-very little all the time (0-15 degrees celsius outside), sunburn (about 6 hours of direct sunlight on the plants on cloudless days), saltburn, over-watering or something else?

In article ,
Player1 wrote:

Planted some popcorn a month ago and now the plants have 4-5 leaves.
They are tall and weak - most of them have one leaf that has broken
near the stem but is still alive - all those leaves have some white
dust like substance in the thing in the middle of the leaf that
supports it.

The white material is dusty looking, not like cotton?

How many plants do you have? Corn isn't self pollenating.

Also, all but the newest leaves are going brown at the
tips - lower ones the most.
Plants that have limited nutrients may put their energy into the upper
growth at the expense of the lower growth. Leads me to think there is
something wrong with the roots (rot, fertilizer burn, mold). You don't
want fine, heavy, clay soil for corn. Medium to course soils will warm
faster.

Lanky appearance may indicate lack of Sun.

Some pictures:
Plant 1 - http://tinyurl.com/3nnt99
http://tinyurl.com/4jxje8
Plant 2 - http://tinyurl.com/44sobp

The window faces south-west. Fertilized it once, with the one you mix
in the water, didn't help though. May the problem be the cold air from
the window that is open very-very little all the time (0-15 degrees
celsius outside), sunburn (about 6 hours of direct sunlight on the
plants on cloudless days), saltburn, over-watering or something else?
Corn likes heat, Sun, and water. These are the conditions you need to
optimize. Unless someone has a better Idea, I would re-pot into a larger
container (add 20% sand to 80% potting mix", tent (should be available
from nursery) and put outside on sunny days, close window at night (it's
open to reduce humidity in your home?) to increase warmth, only water
the corn when surface looks dry. Popcorn will take 90 - 120 days to
mature under ideal conditions.
--

Billy

Impeach Pelosi, Bush & Cheney to the Hague
http://angryarab.blogspot.com/
http://rachelcorriefoundation.org/

Thanks for answering.

Yes, it is dusty looking and I have 9 plants.

It seems that the leaves have stopped turning brown except for one plant.
Also, all those leaves that have that white dusty looking material and are broken are the third leaves for some strange reason.

In article ,
Player1 wrote:

Thanks for answering.

'Billy[_4_ Wrote:
;784072']
The white material is dusty looking, not like cotton?

How many plants do you have? Corn isn't self pollenating.


Yes, it is dusty looking and I have 9 plants.

It seems that the leaves have stopped turning brown except for one
plant.
Also, all those leaves that have that white dusty looking material and
are broken are the third leaves for some strange reason.

A visit to a local nursery can't hurt. Take a plant with you to identify.
In the meantime look at
http://en.allexperts.com/q/House-Pla...nts-help-1.htm
or
http://forums2.gardenweb.com/forums/...3928676.html?1
or
http://www.cpukforum.com/forum/index...howtopic=22525

It would seem that the problem is powdery mildew. Ask about a fungicide
for house plants at your local nursery.
--

Billy

Impeach Pelosi, Bush & Cheney to the Hague
http://angryarab.blogspot.com/
http://rachelcorriefoundation.org/

This white dust is only in the main veins of the leaves and nowhere else,
but a picture of powdery mildew showed that the leaf had white dust all over it.
It seems to me that something is clogging the "pipes" of the plants.

In article ,
Player1 wrote:

'Billy[_4_ Wrote:
;784233']
It would seem that the problem is powdery mildew. Ask about a fungicide

for house plants at your local nursery.

This white dust is only in the main veins of the leaves and nowhere
else,
but a picture of powdery mildew showed that the leaf had white dust all
over it.
It seems to me that something is clogging the "pipes" of the plants.

Have you been to the nursery?
--

Billy

The Death of Rachel Corrie
http://electronicintifada.net/v2/article1248.shtml

In article ,
Player1 wrote:

Planted some popcorn a month ago and now the plants have 4-5 leaves.
They are tall and weak - most of them have one leaf that has broken
near the stem but is still alive - all those leaves have some white
dust like substance in the thing in the middle of the leaf that
supports it. Also, all but the newest leaves are going brown at the
tips - lower ones the most.

Some pictures:
Plant 1 - http://tinyurl.com/3nnt99
http://tinyurl.com/4jxje8
Plant 2 - http://tinyurl.com/44sobp

The window faces south-west. Fertilized it once, with the one you mix
in the water, didn't help though. May the problem be the cold air from
the window that is open very-very little all the time (0-15 degrees
celsius outside), sunburn (about 6 hours of direct sunlight on the
plants on cloudless days), saltburn, over-watering or something else?

http://vegetablemdonline.ppath.corne...t%20Corn/CornR
ust/CornRustPhotoList.htm

Can it be one of these?

Bill

--
Garden in shade zone 5 S Jersey USA

In article
,
Bill wrote:

ust/CornRustPhotoList.htm

From the description, it seems that the upper left is the culprit.
Thanks Bill.
--

Billy

The Murder of Rachel Corrie
http://electronicintifada.net/v2/article1248.shtml

In article ,
Ann wrote:

Player1 expounded:

saltburn, over-watering or something else?

Those would be my guesses. That soil looks pretty wet. As for the
light, is the window clear glass or that low e stuff that blocks some
of the rays? All in all they look weak and spindly, as though they'd
been overwatered and lacking sunlight.

Thank you Ann. I think he'll hear you.
--

Billy

The Murder of Rachel Corrie
http://electronicintifada.net/v2/article1248.shtml