Chocolate Spot of Beans

Botrytis fabae

Description:

Species Affected:

Beans, Faba Beans, Lentils.

Biology:

Disease is usually worse in early sown, dense or lodged crops.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Faba Beans

Spray at mid flowering in dense crops.
Use foliar sprays such as carbendazim, chlorothalonil, copper, mancozeb or procymidone at the first sign of disease or if significant infection occurs at flowering or pod fill or the temperature is 15-250C and humidity greater than 70% for 4-5 days.
Use of chlorothalonil or mancozeb is generally preferred as it controls Ascochyta staining of seed also.

Lentils

Treat seed with a product containing thiram.
Use foliar sprays such as carbendazim, chlorothalonil and mancozeb before canopy closure and repeat if warm humid conditions prevail.
Avoid practices which create warm humid conditions under the crop canopy.

Related and Similar Species:

References:

Acknowledgments:

Collated by HerbiGuide. Phone 08 98444064 or www.HerbiGuide.com.au for more information.