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nutrient, pyrodwarf rootstock, yellowing (D) - Ask Extension

Hello I wonder what is going on with these pyrodwarf rootstocks? They were grown using the tissue culture technique, received iron before planting, a...

Hello
I wonder what is going on with these pyrodwarf rootstocks? They were grown using the tissue culture technique, received iron before planting, are 20-30 cm tall and have passed acclimatization in the greenhouse. The upper leaves are yellow.
Thank you in advance

Hello

I wonder what is going on with these pyrodwarf rootstocks? They were grown using the tissue culture technique, received iron before planting, are 20-30 cm tall and have passed acclimatization in the greenhouse. The upper leaves are yellow.

Thank you in advance

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.