Septoriosis
Soybean Brown Spot
Septoria Glycines
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Brown spot, caused by the fungus Septoria glycines, is a common disease that affects soybean crops in many parts of the world. This pathogen is known for its ability to cause significant damage to soybean plants, which can result in reduced crop yield and quality.
SYMPTOMS
In soybeans, brown spot produces symptoms that include the appearance of circular brown Taches on the leaves of the plant. These Taches usually have a darker center and can expand quickly, covering large areas of the leaf. Additionally, brown spot lesions can coalesce and form necrotic areas, which can affect the plant's ability to photosynthesize and its overall development.
TEMPERATURE AND HUMIDITY
20°C - 25°C
80% - 90%
HOW IS IT SPREAD?
Wind, agricultural tools, irrigation water, vegetative propagation.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• AZOXISTROBIN 25% [SC] P/V
• BOSCALIDA 15% + PIRACLOSTROBIN 25% [SC] P/V
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
Treatments allowed in organic farming
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
Insect allies
PREDATORY MITES
LADYBUGS
LACEWINGS
PARASITIC WASPS
HOVERFLIES OR PARASITIC FLIES
PREDATORY BUGS
There are no natural allies
Mycodiplosis oidii (predatory mosquito)
EFFECTIVE PRODUCTS TO ELIMINATE THIS DISEASE
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To prevent and control brown spot in soybean crops, it is important to implement integrated pest management practices. This includes crop rotation, removal of infected crop residues, use of resistant varieties, and timely application of specific fungicides at critical times in the crop cycle.
Recommendations
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