Horticultural Reviews, Volume 44

320 G. McCOLLUM AND E. BALDWIN

(a)

(b)

0

1

2

3

4

5

6

7

8

9

2011/12 2012/13 2013/14 2014/15

Million metric tons

0

0.5

1

1.5

2

2.5

3

2005/06 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14 2014/15

Million metric tons (at 65 degrees Brix)

Production Consumption

Fig. 7.1. USDA, FAS estimates for U.S. citrus production (a) and worldwide production
and consumption (b) (USDA, FAS 2015). US Federal document which is in the public
domain and freely available.

recommended that HLB be accepted as the official name of the disease
(Bove 2006). ́
Although the story of HLB began over a century ago, it is only the
last decade that the disease has had serious impact on citrus produc-
tion in the Western Hemisphere (Bov ́e 2006; Gottwald 2010; da Grac ̧a
et al. 2015). HLB is a decline disorder that progresses with time, debil-
itating trees, reducing yields and fruit quality, and eventually making
trees economically non-viable. In the last decade, HLB has devastated
the processed orange juice production in Florida (Hodges and Spreen
2012; Spreen et al. 2014) and had significant impact in Brazil (Bove ́
2014). Grapefruit and mandarins have also been impacted by HLB in
Florida and Texas. Although HLB has been confirmed in California, it
has not yet been found in commercial citrus orchards. At the time of
this writing, HLB has not been found in Arizona.