For example, although basic copper sulfate
(Albaugh and Old Bridge) have pretty broad labels across the crops listed,
under crucifers they list leaf spots (LeafS) along with downy mildew (DM), leaving us to assume that the leaf spots they mean are
for Bacterial black rot (Blkrot)
and Alternaria black leaf spot (Alt
LS), as these diseases are shown on all other labels. For cucurbits, 2ee labeling exists for
some coppers in NYS for Phytophthora blight (PhyBlt) as indicated. The basic copper sulfate labels for onion do not include bacterial
blight for onion, but most of the other labels do. Perhaps it is good for the onion crop (and
for growers) that the bacterial blights are not specified, since at
least 4 different bacterial diseases can infect onion, and bacterial diseases
are not easily identified without laboratory isolations. The straight copper products are all labeled
for TEP, = Tomato, Eggplant and Pepper. In the table, only the diseases for tomato = T are listed (because of space
limitations), but in the footnote the diseases are covered for eggplant and pepper. Another clarification
for tomato is for leaf mold caused by Fulvia fulva. This appears
on the labels as either leaf mold (LefMo)
or gray leaf mold (GyLM). A few labels will also list under tomato, Stemphylium
leaf spot (StemLS), but
we do not recognize this disease in the Northeast. Finally, both Cuprofix MZ Disperss and ManKocide, consisting of both copper and mancozeb, have a more
restricted crop usage label because of the addition of mancozeb. In the case of Tomato they are registered, but they are not registered for
use on eggplant or pepper.
Note: The listed
crops and diseases are as found on the most recent labels for the copper
products. Most are from the PIMS web
site, however in a few cases I used the latest label found on the Crop Data
Management System (CDMS) (http://www.cdms.net/LabelsMsds/LMDefault.aspx?ms=1,2,3,4)
as of July 2007. Even here confusion
arises, since on the PIMS site, for example, the two Champion WP products from
NuFarm and Agtrol (former company) are both registered, but do not include any
leafy vegetables, including Spinach, on these labels (Spinach appears on the
CDMS national label) (this confusion also exists for Champ 2F and Champ Dry
Prills). My advice is to carefully check
the label before you purchase any product to make sure it clearly lists the
crops and diseases for your intended use.
Disclaimer: Please read the pesticide label prior to
use. The information contained in the
article is not a substitute for a pesticide label. Trade names used herein are for convenience
only; no endorsement of products is intended, nor is criticism of unnamed
products implied. Most of this
information is historical in nature and may no longer be applicable.
