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Generally speaking, the risk of different diseases changes with weather conditions. But what weather conditions should put you on high alert for fruit rots in your peppers or tomatoes? Check out the summaries below to learn how to maximize your application of Syngenta vegetable products to manage diseases caused by fungi.

Tomatoes: What conditions promote disease?

Disease	Ideal temperature	Humidity	Dew or leaf wetness?	Rainfall?
Early blight	17 to 24 °C	High	Loves it	Loves it
Septoria	20 to 25 °C	High	Loves it	Loves it
Anthracnose	10 to 30 °C	High	Loves it	Loves it

What solutions to try?

What to try? (FRAC Group)	Targets	When to try and why?	L/acre*
(M5)	Early blight Anthracnose Septoria leaf spot Late blight Botrytis grey mould	Flexible timing to protect vegetative growth early or use as a dependable rotational partner later on	1.0 to 1.9
(3 + 11)	Early blight Anthracnose Septoria leaf spot	Typically applied at flowering, two active ingredients provide broad-spectrum protection.	0.25
(7)	Early blight Anthracnose Septoria leaf spot	During fruit set, translaminar activity with long-lasting protection from SOLATENOL® technology.	0.2 to 0.3
(3 + 7)	Early blight Anthracnose Septoria leaf spot Alternaria canker and rot Botrytis grey mould** White mould**	Long-lasting protection with ADEPIDYN® technology when applied during fruit development provides extended control into harvest.	0.4

*Application rate may differ by tomato crop and target. Always consult the product label to confirm the application rate and targets by crop.
**Suppression

The rules for chlorothalonil are different for processing tomatoes and staked tomatoes. Review the details. 

Looking for more information on controlling late blight in your tomatoes? Talk to your local input supplier, connect with a Syngenta rep, or check out the Ontario CropIPM site for more information. 

Peppers: What conditions promote disease?

 

Key Disease	Ideal temperature	Humidity	Dew or leaf wetness?	Rainfall?
Anthracnose	20 to 27 °C	High	Loves it	Loves it

What to try? (FRAC group)	Spectrum	When to try and why?	Product/acre*
(3 + 11)	Anthracnose Powdery mildew	Start applications at flowering, rotating FRAC Groups for resistance management	0.25 L
(7)	Anthracnose		0.2 to 0.3 L
(3 + 7)	Anthracnose Powdery mildew Botrytis grey mould** White mould**		0.4 L
(9 + 12)	Anthracnose Botrytis grey mould		0.31 to 0.39 kg

*Always consult the product label to confirm the application rate and targets by crop.

Looking for more information? Check out this article on Phytophthora in peppers by Horticulture Specialist, David Jefferson. 

Performance evaluations are based on internal trials, field observations and/or public information. Data from multiple locations and years should be consulted whenever possible. Individual results may vary depending on local growing, soil and weather conditions. Always read and follow label directions. Trademarks are property of their respective owners.

Syngenta has developed these materials using information that should result in a reasonable approximation of the information sought. The materials are being distributed to you for information purposes only and for your private use. While every effort has been made to ensure the accuracy and reliability of the information and formulas, no guarantee is given or responsibility taken by Syngenta for the accuracy of the materials or the applicability to your particular circumstances.

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