would you please diagnose this cucumber leaves disease?

Cucumber    Jordan

spots centers light pink colored, water soaked, pictures are arranged in order of disease development progress.
green house cultivation.

Posted by: Yahya Dana (1 point) Yahya Dana
Posted: November 7, 2017


It looks like symptoms may be due to abiotic stress (like high temperature, humidity, light, etc.,) Do you regulate temperature and humidity in your greenhouse? And how frequently you irrigate the plants?

Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: November 7, 2017

Yahya Dana commented,
Temp. and humidity not regulated, sandy soil, last action was ammonium sulphate + thiomethoxam+ iron+tebuconazol+humic acid by fertigation.
over 2 years ago.

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