Table 12 - Activity Spectrum of Apple Fungicides
|
Fungicide1 |
Apple Scab |
Powdery Mildew |
Rust |
Black Rot |
Sooty Blotch & Flyspeck |
Bitter Rot |
|
Bayleton (triadimefon) |
+ |
++++ |
++++ |
0 |
0 |
0 |
|
Benlate (benomyl) |
++++2 |
++3 |
0 |
++ |
++++ |
+ |
|
Captan |
++++ |
0 |
+ |
+++ |
+++4 |
+++4 |
|
Carbamate (ferbam) |
++ |
0 |
++ |
++ |
++ |
++ |
|
Dithane (mancozeb) |
++++ |
0 |
++++ |
++++ |
++++ |
++++ |
|
Maneb, Manex (maneb) |
++++ |
0 |
++++ |
++++ |
++++ |
++++ |
|
Manzate, Penncozeb (mancozeb) |
++++ |
0 |
++++ |
++++ |
++++ |
++++ |
|
Nova (myclobutanil)4 |
++++ |
++++ |
++++ |
0 |
0 |
0 |
|
Polyram (metiram) |
++++ |
0 |
++++ |
++++ |
++++ |
++++ |
|
Rubigan (fenarimol)4 |
++++ |
++++ |
++++ |
0 |
0 |
0 |
|
sulfur |
++ |
++ |
+ |
++ |
++ |
- |
|
Syllit (dodine) |
++++2 |
0 |
+ |
+ |
+ |
0 |
|
Thiram |
++ |
0 |
++ |
++ |
++ |
++ |
|
Topsin-M (thiophanate-methyl) |
++++2 |
++3 |
0 |
++ |
++++ |
+ |
|
Ziram |
++ |
0 |
++ |
++ |
+++ |
++ |
- = Unknown or does not apply; 0 = None; + = Slight; ++ = Fair; +++ = Good; ++++ = Excellent
1
Ratings assume that the fungicide is used at the recommended rate and applied correctly.2 Except in orchards where resistance is present. Benlate is not labeled for use by itself on apples. Resistance to Benlate indicates resistance to Topsin-M. Topsin-M should always be combined with an unrelated fungicide (i.e. not with Benlate)..
3
Resistance or tolerance is suspected in some orchards but has not been proven.4
Limited residual activity. Rating assumes regular reapplication during periods of heavy disease pressure.* Adapted from: 1996 Pest Management Recommendations for Commercial Tree-Fruit Production by A.M.
Agnello, W.F. Wilcox, J. Kovach, and W.C. Stiles; Cornell Cooperative Extension.
On to Characteristics of Scab Fungicides