Yellowing leaves on Lemon Trees

Asked February 14, 2016, 6:46 AM EST

A friend has yellowing leaves on formerly healthy lemon trees in backyard in San Antonio. Veins yellowing first, then whole leaves. I'm calling it chlorosis & suggested she treat it w/ Ironite. Am I wrong? What's a better treatment? Dosage? per packaging? or go heavy at first?
Thanks

Bexar County Texas

2 Responses

Thank you for your questions.

1. Investigate to find the cause of the yellowing (chlorosis). Iron deficiency is only one explanation. Look for root related problem (eg. root rots, root drownings) as root damage can resulting in inefficient nutrient uptake (which mean ironite application will not work).
2. If there does not appear to be apparent root damage, follow package treatment suggestions. It would ideal to have a soils test done to determine the exact needs.

Thanks much. She does water twice a day & keeps putting more fertilized soil into the bed annually. I keep suggesting she quit burying the air roots. I'm a retired physician & she doesn't take medical advice either. I'll cut & paste your answer to her. Again, Muchos Garcias :-)