Fwd: [AHSBiz] An Answer from IFAS

[Victor Zeno]

Hello everyone,

 

This came up on the AHS Bizlist and I thought was really interesting, so I am forwarding it to everyone. The link has a lot of good information.

Victor

Over the past several months many C-S Chapter Members thought they had mealy bug or even pink mealy bug but never saw any mealy bug.  I went to one of the Extension Agents at IFAS in Palm Beach County with my evidence which looked exactly like the pictures on this site below for an answer and last night he announced while doing a Hibiscus nutrition progam for our meeting that he had found the cause, Boron.  I thought that many of you would enjoy passing this information along to your members.

Paul Felsberg, President, Conrad-Sunrise Chapter

http://edis.ifas.ufl.edu/EP362

Boron (B)

Boron deficiency is rather rare in trees and shrubs but has been observed regularly in Chinese hibiscus (Hibiscus rosa-sinensis). Symptoms appear on the new growth as small, upwardly cupped or puckered, dark green, brittle leaves with short internodes (Figs. 20-21). It may result in a rosette effect or even shoot die-back (Fig. 22). Boron deficiency is caused by leaching on sandy soils, but by drying or high pH on other soil types.

Full Pockets are Happy Pockets!!

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