critical severity

Indwara y'Icyatsi y'Indimu (Huanglongbing)Identification & Treatment Guide 2026

Candidatus Liberibacter asiaticus · Family: Rhizobiaceae

Indwara y'icyatsi y'indimu (Huanglongbing) iterwa na Candidatus Liberibacter ikwirakwizwa n'inyenzi. Itera amababi kuba icyatsi ku ruhande rumwe, imbuto nto zidashobora gutekwa. Nta muti — irwanywa no kurwanya inyenzi, gukoresha imbuto zisukuye, no kurambura ibiti byanduye.

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Quick Diagnosis

critical

Indwara y'Icyatsi y'Indimu (Huanglongbing)

Affects: leavesfruitrootsphloem
Peak Season: Year-round in tropical/subtropical regions; psyllid activity peaks during warm months and flush growth
Spread Risk: Moderate
Spread By: Asian citrus psyllid (Diaphorina citri), African citrus psyllid (Trioza erytreae), infected nursery stock, grafting

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Symptoms: What does Indwara y'Icyatsi y'Indimu (Huanglongbing) look like?

Visual identification guide — tap each stage for details

Asymmetric blotchy yellow mottling on citrus leaf from HLB — Asymmetric yellow mottling — note irregular pattern across midrib

Small lopsided citrus fruit with asymmetric coloring from HLB — Lopsided fruit with uneven coloring and aborted seeds

Citrus tree with severe canopy thinning from advanced HLB — Tree decline with canopy thinning and branch dieback

Intambwe ya mbere

Asymmetric blotchy mottling on leaves
Amababi agaragaza guhinduka icyatsi cyijimye ku ruhande rumwe gusa (asymmetric chlorosis). Imirongo y'imitsi igaragara neza.

Intambwe yo hagati

Sectored yellowing and small fruit
Amababi aba mato, ahinduka icyatsi cyijimye cyangwa umuhondo. Amashami amwe apfa. Imbuto ziba nto, zidafite ishusho.

Intambwe y'imperuka

Tree decline and dieback
Igiti cyose kikomera, amashami menshi apfa. Imbuto ziba nto cyane, zifite ibara ritukura ku ruhande rumwe, imbuto z'imbere (imbuto) zihinduka umwirabura. Igiti gipfa buhoro buhoro.

Causes: Why is my plant getting Indwara y'Icyatsi y'Indimu (Huanglongbing)?

Environmental triggers and disease cycle

Asian citrus psyllid (Diaphorina citri) feeding and transmitting bacteria
Planting infected nursery stock
Grafting with infected budwood
Proximity to infected trees — psyllids fly 1-2 km

Disease Lifecycle

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Host Plant

Susceptible crop

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Pathogen

Candidatus Liberibacter

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Conditions

Year-round in tropical/subtropical regions; psyllid activity peaks during warm months and flush growth

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Infection

Penetrates tissue

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Symptoms

Visible signs

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Spread

Asian citrus psyllid (Diaphorina citri)

Often confused with: Inkovu y'Imbuto z'Indimu. See our comparison guide.

How to Treat Indwara y'Icyatsi y'Indimu (Huanglongbing)

Tick each step as you complete it — works offline too

🌿 OrganicSafe for all farms

Organic Treatment Steps

4 steps

Rambura ibiti byanduye kugira ngo ugabanye isoko ya bagiteri.
Koresha amavuta ya neem kugira ngo urwanye inyenzi z'indimu.
Tanga ifumbire nziza kugira ngo ibiti bisigaye bikure neza.
Gusohora mu murima udukoko turya inyenzi (parasitoids) nka Tamarixia radiata.

🧪 ChemicalUse protective equipment

Chemical Treatment Steps

4 steps

Kuvuza imidacloprid mu butaka ku 0.5 ml/L kugira ngo urwanye inyenzi z'indimu.
Kuvuza dimethoate ku 2 ml/L amazi kugira ngo urwanye inyenzi zikuze.
Koresha abamectin ku 0.5 ml/L nk'undi muhitamo.
Hindura imiti buri gihe kugira ngo inyenzi zidahangana.

Prevention & Seasonal Calendar

Year-round protection plan for your crops

Pre-Planting

Gukoresha imbuto z'indimu zisukuye gusa zivuye mu bitaro bizwi
Kurwanya inyenzi z'indimu mu mirima buri gihe
Kurambura ibiti byanduye vuba

Mid-Season

Gusuzuma ibiti bishya mbere yo kubitera
Gukoresha udukoko turya inyenzi nka Tamarixia radiata
Kwirinda guteza ibiti biturutse mu turere bitazwi

Post-Harvest

Gukurikirana imirima buri gihe

🌼 Companion Planting

These plants can reduce Indwara y'Icyatsi y'Indimu (Huanglongbing) pressure when grown nearby:

guava

View full seasonal calendar for your region →

Frequently Asked Questions

Common questions about Indwara y'Icyatsi y'Indimu (Huanglongbing)

Igiti cy'indimu cyanduye gishobora gukizwa?

Oya, nta muti uhari kugeza ubu. Igiti cyanduye gipfa buhoro buhoro mu myaka 3-5. Kurambura ibiti byanduye ni byo bikorwa kugira ngo birinde ibisigaye.

Imbuto z'igiti cyanduye zirashobora kuribwa?

Imbuto ntizitera kibazo ku buzima ariko ziba nto cyane, zifite uburyohe bubi, kandi zidashobora gutekwa neza. Ntihaboneka inyungu zo gusarura.

Inyenzi z'indimu ni iki?

Ni udukoko duto dusimbuka tuboneka ku mababi mashya y'indimu. Mu Rwanda, Trioza erytreae (African citrus psyllid) ni yo nyinshi. Turya ku mababi kandi tugakwirakwiza bagiteri.

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Related Disease

Inkovu y'Imbuto z'Indimu

Xanthomonas citri subsp. citri

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Affected Plant

Citrus (Orange, Lemon, Lime)

Citrus sinensis / C. limon / C. aurantifolia

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Treatment Guide

Full Treatment Protocol

Detailed spray schedule & dosage guide

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