Science Buddies: "Ask an Expert"

I heard there is a plant disease called "Leaf Burn" (nor burning the leaves)
Also, I found some where that leaf burn is caused by excess of iron in plant. Is that true?

Hi!

Yeah, it is true that there is a disease called leaf burn. I should have given you the website where I found the information on last time. So, here is the site:

http://www.ppath.cas.psu.edu/EXTENSION/ ... anium.html

look under leaf burn and you will see the cause is iron excess

I hope this helps!

Thank You ^^
I wasn't being suspicious or something, I was just looking information about leaf burn, and even in google, I couldn't find much about leaf burn, and my teacher said that I should check again, so I posted question.
Anyway, I think thist helped alot.
Also, I have one more question.
Now I'm almost ready to start my project which is "Does greentea can chelate iron from the plant that has leaf burn?"
Is there anyway that I can induce leafburn to plant? because I need number of sample plants that have leaf burn to test.

Hi!

I tried looking on google but there arent many sites regarding leaf burn or how to induce leaf burn in plants. However on some sites, they said that a plant can get leaf burn by overfertilization. I'll try looking up some more information later on other more efficient methods.

I'll post back later!

hey christina park

this is what i found about leaf burn from this site
http://plantpathology.tamu.edu/Texlab/F ... ado/lb.htm

it says
Leaf Burn (physiological): Leaves brown at the tips and the edges. Affected leaves may drop prematurely. These symptoms can be caused by accumulation of salts in the soil, inadequate soil moisture, wind dessication, and frost. Light irrigation should be avoided since this fails to leach accumulated salts out of the root zone. The soil should have good drainage.

i hope this helps...good luck
jr

SO, that is saying that leafburn is not caued by excess of iron, it's caused by excess of salts, lack of water, frost etc???
Then leaf burn will not be the right choice for my project???
Is there any plant disease that is primarily caused by excess of iron?

Leaf burn is typically associated with other fertilizers, however it can be caused by an excess of iron. For example it can be caused by iron that is sprayed in chelate form.
http://www.ext.colostate.edu/PUBS/crops/00545.html
(towards the bottom)

Iron deficiency is probably a more common problem in plants. If you do a google search for "iron chlorosis" you will find many web pages describing the issue.