Heat Stress

[Asus101]

its currently 47.6 and its 11am

EDIT
11:18 48.8*c

11:46 49.1

12:10 49.6*c

1:20 pm Outside temperature is 49.8 C

Can we make it lads?

[Bretts]

Arrrrg

[FlyBri]

its currently 47.6 and its 11am

EDIT
11:18 48.8*c

So I guess I shouldn't complain about it being 42 here with strong, gusty winds... I've filled a large black recycling tub with water, and I suspect much of my day will be spent dunking trees.

Good luck all!

Fly.

[Asus101]

Ill be updating that post.... check up as it goes.

[Bretts]

Since your post stating humidity Ben I havehad my temp hydromater gauge with my trees. I have been getting a humidity % level in the low twenties . It is lucky to get in the high twenties after watering or misting. I tend to get higher with watering? The temp has been ok from low to mid thirties at the hottest time of day were my trees are. When it is high thirty to forty degree days. I put the gauge out with my sun lovers leaning against a pot the other day and the digital screen went black from the heat. My screen came back when it showed 45 degrees. That scared me enough to bring them in for some protection

What humidity are you getting today around your trees and out in the open?

[Bretts]

I saw a good quote on your heat stress hints on BT Ben that stated Morning sun ends at 10am I think that is a good way to look at it

[Asus101]

My tree's that get misted are in a tight group along the side of the house, and are enclosed completely.
The humidity is high enough to feel, and lasts for a number of hours before needing to be re done, not sure the actually %.
i have started to introduce babies tears to the floor to help keep it up as well.

[Pup]

Good luck Guys ours has dropped to 29 today but it is set to start rising tomorrow till it gets to 41 by next week end.
One of my Granduaghters is getting Married next Saturday so we are hoping for cooler weather for then. Pup

[Bretts]

I have some intresting results at the moment.
Our officlal temp here is 36.3 at the moment. It was 36.7 in my shady area with a humidity of 20%. While I misted I put the temp gauge with the couple of trees still out in the sun It got to 45.5 and was still rising the humidity did not change from 20% and that is our current official reading. I even used a pool temp gauge to check it is working properly and that gave the same temp reading
After misting I replaced the temp hydromater gauge back in the shade area and after some time it dropped down to 31.1 but the humidity is still the same at 20%.
Now I'm confused. Unless my hydrometer does not go below 20% I can't say I remember it going any lower?

[Hector Johnson]

Sit the tender ones in water and don't worry about whether it can do them damage... it can't damage them as much as the heat.

[buddaboy]

I keep most of my more tender trees under a Ponciana up the back yard. They all survived my week long Xmas holiday, but I havent had to deal with those sort of temps.

Ron

[Hector Johnson]

The measurement of official temperatures is done in a slatted wooden box that is at least a metre off the ground. That way you get a true temperature reading of the air.
You'll always get hotter temperatures in full sun or closer to the ground, where radiated heat can have an effect. Of course, if your trees are down near the ground then they're at risk.

Good to hear you guys have had a cool change come through.

[Milehigh_7]

Hello everyone,

This is my first post here but as I live in Las Vegas Nevada I may be of some use to you.

1) Shade -- NO direct sun after 10AM on the hottest days. Use shade cloth a patio anything you have to but NO direct sun.
Shade your pots as well sun on the pots and soil can increase your root temps 10C

2) Humidity -- be sure you are using a VERY fast draining soil and water 3 or more times per day.
Crowd your plants as close together as you can during the hottest times this will increase the ambient humidity and lower the temps via evaporative cooling
You can even place trays of wet sand under your benches to increase the humidity
Mist if this is an option it cools the air significantly

3) Radiant heat -- This is the sneaky killer. You must be aware of radiant heat from anything near your trees.

4) Don't feed nitrogen going into the hottest time. The flush of fresh leaves will increase the transpiration rate.

If I can think of anymore things I will post. I know there are a couple I am forgetting. Good luck!

[Ash Barns]

Mile High_ 7 good to see you in here welcome to our site.

Ash

[anttal63]

Hello everyone,

This is my first post here but as I live in Las Vegas Nevada I may be of some use to you.

1) Shade -- NO direct sun after 10AM on the hottest days. Use shade cloth a patio anything you have to but NO direct sun.
Shade your pots as well sun on the pots and soil can increase your root temps 10C

2) Humidity -- be sure you are using a VERY fast draining soil and water 3 or more times per day.
Crowd your plants as close together as you can during the hottest times this will increase the ambient humidity and lower the temps via evaporative cooling
You can even place trays of wet sand under your benches to increase the humidity
Mist if this is an option it cools the air significantly

3) Radiant heat -- This is the sneaky killer. You must be aware of radiant heat from anything near your trees.

4) Don't feed nitrogen going into the hottest time. The flush of fresh leaves will increase the transpiration rate.

If I can think of anymore things I will post. I know there are a couple I am forgetting. Good luck!

great post mile high