high severity

Mosaic y'Ibishyimbo by'InkaIdentification & Treatment Guide 2026

Cowpea mosaic virus (CPMV) · Family: Secoviridae

Mosaic y'ibishyimbo by'inka iterwa na virusi. Kurwanya udukoko ni ingenzi.

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Quick Diagnosis

high

Mosaic y'Ibishyimbo by'Inka

Affects: leavespodsseeds
Peak Season: Growing season; beetle vector populations peak mid-season
Spread Risk: Moderate
Spread By: Chrysomelid beetles (Ootheca mutabilis, Cerotoma trifurcata), seed-borne (1-5%)

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Symptoms: What does Mosaic y'Ibishyimbo by'Inka look like?

Visual identification guide — tap each stage for details

Green-yellow mosaic mottling on cowpea trifoliate leaf from CPMV — Severe mosaic mottling on cowpea trifoliate leaf

Blistered distorted cowpea leaf from CPMV infection — Leaf blistering, distortion, and size reduction from CPMV

Severely stunted cowpea plant with few pods from CPMV — Stunted plant with dramatically reduced pod production

Intambwe ya mbere

Vein clearing and mild mosaic on young leaves
Mosaic y'icyatsi gitandukanye ku mababi mashya.

Intambwe yo hagati

Severe mosaic, blistering, and leaf distortion
Amababi akunya n'ibipande byijimye.

Intambwe y'imperuka

Stunted plants with few pods
Igihingwa gigufi, imifuko mike n'imbuto nke.

Causes: Why is my plant getting Mosaic y'Ibishyimbo by'Inka?

Environmental triggers and disease cycle

Chrysomelid beetle feeding transmitting virus from infected to healthy plants
Planting virus-infected seed
High beetle populations during seedling and vegetative stages
Proximity to volunteer cowpea or infected wild legume hosts

Disease Lifecycle

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Host Plant

Susceptible crop

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Pathogen

Comovirus

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Conditions

Growing season; beetle vector populations peak mid-season

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Infection

Penetrates tissue

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Symptoms

Visible signs

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Spread

Chrysomelid beetles (Ootheca mutabilis

Often confused with: Mosaic y'Ibishyimbo, Virusi y'Isoya Mosaic. See our comparison guide.

How to Treat Mosaic y'Ibishyimbo by'Inka

Tick each step as you complete it — works offline too

🌿 OrganicSafe for all farms

Organic Treatment Steps

5 steps

Kuraho ibihingwa byandujwe vuba.
Koresha imiti irwanya udukoko (neem).
Tera ubwoko burwanya.
Tera mu gihe kibereye.
Kuraho ibyatsi bibi bifasha udukoko.

🧪 ChemicalUse protective equipment

Chemical Treatment Steps

4 steps

Tera insecticides kurwanya beetles.
Koresha carbaryl cyangwa lambda-cyhalothrin.
Tera mu ntangiriro y'ikura.
Ongera buri byumweru 2 niba bikenewe.

Prevention & Seasonal Calendar

Year-round protection plan for your crops

Pre-Planting

Ubwoko burwanya
Kurwanya udukoko

Mid-Season

Gutera mu gihe
Kuraho ibihingwa byandujwe

Post-Harvest

Isuku mu murima

🛡️ Resistant Varieties

IT97K-499-35 (IITA)IT86D-719 (IITA)TVu 410 (IITA)

🌼 Companion Planting

These plants can reduce Mosaic y'Ibishyimbo by'Inka pressure when grown nearby:

sorghummillet

View full seasonal calendar for your region →

Frequently Asked Questions

Common questions about Mosaic y'Ibishyimbo by'Inka

Beetles zikwirakwiza gute virusi?

Beetles zirya amababi yandujwe maze zikandukiza virusi ku yandi bihingwa mu kanwa kazo.

CPMV ni nk'iyihe BCMV?

Oya. CPMV ni comovirus ikwirakwizwa na beetles. BCMV ni potyvirus ikwirakwizwa n'udukoko duhenda.

Ni ibihe bihingwa byandura?

Ibishyimbo by'inka cyane cyane, ariko n'ibindi bihingwa bya legume bishobora kwandura.

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