Pests and Diseases

Visual identification, isolation, prevention and initial care when dealing with insects and possible plant diseases.

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Mão sustentando uma folha verde brilhante com gotas, com ampliações de cochonilhas, pulgões e gotas alinhadas na borda da folha.

Pests and Diseases08/09/20265 min read

Sticky plant leaves: honeydew, mealybugs, aphids, or guttation?

A practical key to tell whether stickiness comes from sap-feeding insects or the plant itself before applying any treatment.

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Folha com áreas prateadas e pontos pretos sob uma lupa que amplia pequenos tripes, com detalhes laterais de um ácaro e de pontilhado claro na folha.

Pests and Diseases01/09/20266 min read

Silvery leaves and black specks: how to confirm thrips and tell them from spider mites before treating

Irregular silvering with black specks favors thrips; fine stippling and webbing favor spider mites. Learn how to confirm the pest before treating.

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Folhas verdes de plantas em vaso com uma folha coberta por pó branco, outra com pequenos aglomerados cotonosos e outra com marcas claras de resíduo.

Pests and Diseases25/08/20268 min read

Powdery mildew on potted plants: how to confirm the white powder and tell it apart from mealybugs and residue

Before applying any product, observe texture, distribution, and associated signs. The pattern of the white powder helps distinguish powdery mildew from mealybugs and residue.

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Folha verde com pontilhado claro e teia fina, observada com lupa que revela pequenos ácaros avermelhados, ao lado de um checklist de diagnóstico e papel branco.

Pests and Diseases24/08/20267 min read

Fine webbing and pale specks on leaves: how to confirm spider mites before treating

Fine webbing, stippling, and bronzing suggest spider mites, but confirmation comes from checking leaf undersides, using a hand lens, and the white-paper test.

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Close-up de folhas verdes com grupos de cochonilhas-farinhentas brancas nas axilas e no caule, com detalhe ampliado dos insetos e sinais de inspeção.

Pests and Diseases15/08/20267 min read

White dots looking like cotton on the plant: how to confirm mealybug before treating

Learn how to confirm whether the white dots are mealybugs, where to look for hidden signs and how to choose the first measure without treating the plant in the dark.

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Vaso de planta de interior com substrato úmido, armadilha adesiva amarela com pequenos mosquitos e lupa destacando colêmbolos claros sobre a terra

Pests and Diseases15/08/202610 min read

Gnats in the vase: how to differentiate fungus gnats from springtails and combat the right stage

Learn to separate fungus gnats from springtails by behavior, confirm larvae in the substrate and choose measures that reach adults or larvae without drying the plant as a rule.

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Bananeira com folhas mais velhas amarelecidas e murchas em área de cultivo, ilustrando uma suspeita fitossanitária.

Pests and Diseases07/08/20265 min read

Panama disease R4T: why yellow leaves on a banana tree are not enough to diagnose and when a suspicion should be reported

Yellow sheet alone does not confirm the Foc R4T. See what signs raise suspicion and how to notify MAPA without trying to diagnose or treat it yourself.

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Ficha fotográfica de uma planta com imagens da frente e do verso da folha, régua de escala e indicação do local da observação.

Pests and Diseases05/08/202611 min read

Unknown plant pest: when to photograph, isolate and notify before controlling

Learn how to register unusual signs, reduce the risk of dispersion and decide when to seek diagnosis or notify MAPA before applying products.

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Sinais para observar em palmeiras e passos seguros para notificação fitossanitária

Pests and Diseases04/08/202610 min read

Red palm weevil: MAPA warning signs and when to notify

Understand which signs on palm trees deserve attention, why a photo does not confirm the red weevil and how to notify MAPA without manipulating the plant.

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