Ukungu wa Mapema wa NyanyaIdentification & Treatment Guide 2026
Alternaria solani · Family: Pleosporaceae
Ukungu wa mapema wa nyanya husababishwa na fangasi Alternaria solani. Huzalisha madoa meusi ya kahawia yenye pete za duara kwenye majani ya chini, na kuenea juu. Dhibiti kwa mzunguko wa mazao, aina zinazostahimili, matandazo ya kuzuia udongo kuruka, na dawa za kuua fangasi za chlorothalonil au bidhaa za shaba dalili zinapoonekana kwanza.
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moderateUkungu wa Mapema wa Nyanya
- Affects
- leavesstemsfruit
- Peak Season
- Warm humid months (20-30°C), typically mid to late growing season
- Spread Risk
- Moderate
- Spread By
- Rain splash, wind, contaminated seed, infected plant debris in soil
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Symptoms: What does Ukungu wa Mapema wa Nyanya look like?
Visual identification guide — tap each stage for details
Small dark spots on lower leaves
Dalili za kwanza huonekana kama madoa madogo (mm 1-2) ya kahawia meusi hadi meusi kwenye majani ya zamani zaidi, ya chini ya mmea.
Concentric ring pattern (target spots)
Vidonda hupanuka hadi sm 1-2 na pete za duara zinazoonekana wazi zinazofanana na shabaha au jicho la ng'ombe. Mduara wa njano huendelea kuzunguka vidonda.
Severe defoliation and fruit lesions
Majani mengi yanageuka manjano na kudondoka. Vidonda vyeusi, vilivyozama, vigumu huonekana mwishoni mwa shina la tunda. Mashina huendeleza vidonda virefu vyeusi.
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