Why are my tree’s dying

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Cantgrowtrees

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Joined
Jul 23, 2020
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Location
Arbuckle ca
I have poplar trees and Chinese pistachio trees. The poplars are looking dead and now the Chinese pistachio’s are starting to look bad. They are automatically watered every other day for 20 mins (drip hose). I’ve checked them with a moister meter and soil shows that it moist. Take a look at these pictures. Any help much appreciated.
 

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Both cases look like a leaf disease. Not getting back into twigs, not impacting all leaves. Are the trees actually dying or just some brown leaves?
 
You are over watering, good soaking once a week. Get your soil tested, possible micronutrients deficiencies due to acidic soil.
Leaves are symptomatic of magnesium stress.
 
I have poplar trees and Chinese pistachio trees. The poplars are looking dead and now the Chinese pistachio’s are starting to look bad. They are automatically watered every other day for 20 mins (drip hose). I’ve checked them with a moister meter and soil shows that it moist. Take a look at these pictures. Any help much appreciated.
maby to much rain or bugs
 
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