soil moisture monitoring
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Hi all,
My tomato plants are lacking some much needed help.
I was wondering in there was some simple way to monitor the soil
moisture at 2 levels, one at the upper root zone and one at the lower
root zone.
I have the drip irragaton system in and had hoped a simple timer
circuit would suffice, but alas, I think feedback is needed.
I found wheatstone bridge circuits, but no tomato-stone bridge
circuits.
any advice ?
Dave
My tomato plants are lacking some much needed help.
I was wondering in there was some simple way to monitor the soil
moisture at 2 levels, one at the upper root zone and one at the lower
root zone.
I have the drip irragaton system in and had hoped a simple timer
circuit would suffice, but alas, I think feedback is needed.
I found wheatstone bridge circuits, but no tomato-stone bridge
circuits.
any advice ?
Dave
Comments
are a bit pricey, but I think you could make one yourself if you're clever.
We use a lot of Stevens-Vitel Hydra Probes, $250 a pop, but they're real
accurate. Don't think there's anything commercially available for less than
a couple hundred bucks...if you find anything, let me know!
Jeff Kennedy
USDA Walnut Gulch Experimental Watershed
Original Message
From: "Dave Mucha" <davemucha@j...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, June 26, 2003 7:27 PM
Subject: [noparse][[/noparse]basicstamps] soil moisture monitoring
> Hi all,
>
> My tomato plants are lacking some much needed help.
>
> I was wondering in there was some simple way to monitor the soil
> moisture at 2 levels, one at the upper root zone and one at the lower
> root zone.
>
> I have the drip irragaton system in and had hoped a simple timer
> circuit would suffice, but alas, I think feedback is needed.
>
> I found wheatstone bridge circuits, but no tomato-stone bridge
> circuits.
>
> any advice ?
>
> Dave
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
These URLs might provide some options for you:
<http://www.emesystems.com/smx.htm>
<http://www.emesystems.com/OL2mhos.htm>
<http://www.sowacs.com>
-- Tracy
>Hi all,
>
>My tomato plants are lacking some much needed help.
>
>I was wondering in there was some simple way to monitor the soil
>moisture at 2 levels, one at the upper root zone and one at the lower
>root zone.
>
>I have the drip irragaton system in and had hoped a simple timer
>circuit would suffice, but alas, I think feedback is needed.
>
>I found wheatstone bridge circuits, but no tomato-stone bridge
>circuits.
>
>any advice ?
>
>Dave
At 07:59 AM 6/27/03 -0700, you wrote:
>You might try researching electrical resistance sensors, commericial ones
>are a bit pricey, but I think you could make one yourself if you're clever.
>We use a lot of Stevens-Vitel Hydra Probes, $250 a pop, but they're real
>accurate. Don't think there's anything commercially available for less than
>a couple hundred bucks...if you find anything, let me know!
>
>Jeff Kennedy
>USDA Walnut Gulch Experimental Watershed
>
>
Original Message
>From: "Dave Mucha" <davemucha@j...>
>To: <basicstamps@yahoogroups.com>
>Sent: Thursday, June 26, 2003 7:27 PM
>Subject: [noparse][[/noparse]basicstamps] soil moisture monitoring
>
>
>> Hi all,
>>
>> My tomato plants are lacking some much needed help.
>>
>> I was wondering in there was some simple way to monitor the soil
>> moisture at 2 levels, one at the upper root zone and one at the lower
>> root zone.
>>
>> I have the drip irragaton system in and had hoped a simple timer
>> circuit would suffice, but alas, I think feedback is needed.
>>
>> I found wheatstone bridge circuits, but no tomato-stone bridge
>> circuits.
>>
>> any advice ?
>>
>> Dave
>>
>>
>>
>> To UNSUBSCRIBE, just send mail to:
>> basicstamps-unsubscribe@yahoogroups.com
>> from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>>
>>
>> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>>
>>
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Roger Edberg
roger@i...
www.industrialartist.com
www.technicaltree.com