A compilation of the results of three years of trials testing products allowed for organic production, and one varietal resistance trial, against tomato leaf mold (Passalora fulva) conducted in Geneva, NY....

Potatoes are a vegetatively propagated crop, and many disease organisms including several viruses and a viroid are disseminated in tubers. The important role that tubers play in virus spread is recognized by the strict requirements for foundation...

Tomato anthracnose is a serious disease of processing tomatoes caused by the fungus Colletotrichum coccodes and is a threat to tomatoes grown in New York State. To minimize the mold count in processed tomato products, processors impose a strict...

of documentation of practices A. Pre-season: 1) Maintain a 1 month crop-free, weed free period. 2) Disinfect structure (all surfaces). 3) Discard or steam sterilize growing medium used for crop production. 4) Disinfect irrigation system. B. Transplant Production: 1...
) Purchase hot water treated seed. 2) Use new or steam sterilized growing medium for transplant production. 3) Where market allows choose most disease resistant variety(ies). 4) Grow transplants in separate greenhouse from other crops. � Points 10 10 10 5...

, and the production of unmarketable fruit. Early recognition of the disease, especially in greenhouse crops, is essential if the disease is to be contained. The organism is seedborne and can survive for short periods in soil, greenhouse structures, and equipment...
organism into transplant production fields in southern Georgia originated on commercial seed. If seeds are harvested by either the acetic acid extraction method or by the fermentation process, the threat of seedborne inoculum is greatly reduced...

organisms. Epidemiology and disease development The following comments address pepper Phytophthora blight (P. capsict), and in general also apply for diseases of crops listed in the table. The fungus occurs naturally in most soils and can infect Fig. 5...
(two-tailed) motile zoospores. These spores produce germ tubes that penetrate plant tissue. The cycle is repeated with the production of more sporangiophores and sporangia. When the humidity is high, the sporangia can survive for long periods. During...

that has maneb, mancozeb, chlorothalonil, or fixed copper as an active ingredient AND has tomato and potato late blight on the label. Of these fungicides, only some of the fixed copper products are approved for organic production. Contact your Cornell...
or were forced to emigrate. Entire potato crops rotted in the field or in storage because of late blight infection. Late blight is caused by an oomycete pathogen that survives from one season to the next in infected potato tubers. This organism is well...

rot develops slowly and may not be severe until quite late into the storage period. This decay may allow the entry of secondary organisms such as Fusarium fungi and soft rot bacteria. �CONTROL The following measures will help prevent the occurrence...
. Surface tubers infected by conidia washed from leaves. ~,'~'~:~~"~:,~~:~~,-'".~"~~~~"'~",~",~~~ ~~~~~' ~~"~ "Target" spots Early Blight Disease Cycle Adapted in part from North Dakota State University Extension Bulletin 26, 1976, 'Potato Production...

seeking hibernation sites in the fall may become a nuisance on the walls and at doorways and windows where they congregate. Control Numerous natural control organisms exist in the field. Both parasites and predators are useful. A fungus Beauveria bassiana...
for maximum potato production. In many areas of the Northeast the Colorado potato beetle has become resistant to most pesticides. Control is further complicated by the ability of the species to produce thousands of new eggs per acre. Consult your local...

. 4) If staking, disinfect stakes re-used from previous seasons. 5) Mulch (organic or plastic) for weed and disease management. 6) Bonus: Transplant into a killed cover crop. (If using leguminous cover add 5 points) D. Pest management 1) Calibrate...
these IPM elements can be found in the following publications: Integrated Crop and Pest Management Guidelines for Commercial Vegetable Production. A Method to Measure the Environmental Impact of Pesticides. 1992. New York Food and Life Sciences Bulletin...