Gomosis
Gummosis
Phytophthora Sp.
Pathogen:
Oomycetes
Type:
Risk to the plant:
CRITICAL
DESCRIPTION
WHO CAUSES IT?
Phytophthora sp., commonly known as gummosis, is a pathogenic fungus that affects a wide variety of plants, including citrus. This fungal disease can cause significant damage to trees by invading the root system and trunk, causing symptoms of wilting, necrosis, and eventually death of the plant.
SYMPTOMS
In citrus trees, gummosis caused by Phytophthora sp. produces a series of characteristic symptoms. Among the most common signs are the appearance of dark, sunken Taches on the bark of the trunk and branches, exudation of resin or gum in these affected areas, and progressive wilting of the leaves and branches. Over time, the disease can cause parts or all of the tree to die.
TEMPERATURE AND HUMIDITY
20°C - 30°C
70% - 90%
HOW IS IT SPREAD?
Contaminated soil, infected plant material, contaminated irrigation water, biological vectors, human manipulation.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• FOSETIL-AL 80% [WG] P/P
• FOSETIL-AL 80% [WP] P/P
• POTASSIUM PHOSPHONATES 50.4% (exp. as phosphorous acid) [SL] P/V
• POTASSIUM PHOSPHONATES 51% (Exp. as phosphorous acid) [SL] P/V
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 14% (exp. in Cu) + CUPRIC HYDROXIDE 14% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WP] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• CUPROUS OXIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
Authorized treatments in organic farming
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 14% (exp. in Cu) + CUPRIC HYDROXIDE 14% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WP] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• CUPROUS OXIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% (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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Effective against all types of fungi
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To prevent and control gummosis in lemon trees, it is recommended to implement a series of integrated disease management measures. This includes selecting varieties resistant to the fungus, improving soil drainage to avoid waterlogging, proper pruning to eliminate affected branches, and applying specific fungicides according to the manufacturer's instructions.
Recommendations
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