Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide


Gibberella indica
(wilt of pigeon pea)



Gibberella indica (wilt of pigeon pea)


  • Last modified
  • 16 November 2021
  • Datasheet Type(s)
  • Invasive Species
  • Pest
  • Natural Enemy
  • Preferred Scientific Name
  • Gibberella indica
  • Preferred Common Name
  • wilt of pigeon pea
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Fungi
  •     Phylum: Ascomycota
  •       Subphylum: Pezizomycotina
  •         Class: Sordariomycetes
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Preferred Scientific Name

  • Gibberella indica Rai & Upadhyay (teleomorph)

Preferred Common Name

  • wilt of pigeon pea

Other Scientific Names

  • Fusarium oxysporum f.sp. udum (anamorph)
  • Fusarium udum Butler (anamorph)
  • Fusarium udum var. cajani (anamorph)
  • Gibberella udum (teleomorph)

International Common Names

  • English: Fusarium wilt of pigeon pea; pigeonpea wilt; wilt of red gram

Local Common Names

  • India: wilt of arahar

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Fungi
  •         Phylum: Ascomycota
  •             Subphylum: Pezizomycotina
  •                 Class: Sordariomycetes
  •                     Subclass: Hypocreomycetidae
  •                         Order: Hypocreales
  •                             Family: Nectriaceae
  •                                 Genus: Gibberella
  •                                     Species: Gibberella indica

Notes on Taxonomy and Nomenclature

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The pigeon pea wilt pathogen was described as Fusarium udum (Butler, 1910). Padwick (1940) found that the fungus produced abundant macroconidia in sporodochia in culture and that these spores were strongly hooked at the apex. He proposed the name F. oxysporum f.sp. cajani. Snyder and Hansen (1940) named the fungus F. oxysporum f.sp. udum. This nomenclature was supported by Chattopadhyay and Sengupta (1967). However, the name F. udum is commonly accepted as the macroconidia of this pathogen have a prominent apical hook which is lacking in F. oxysporum (Booth, 1971).

There is some disagreement on the occurrence of a teleomorph. Rai and Upadhyay (1981) discovered the perfect state of F. udum on wilted and dead pigeon pea plants in Uttar Pradesh, India, and named it Gibberella indica. The perithecia were large and they had two-celled (rarely three-celled) ascospores. Singh (1980) also found the perfect stage of F. udum and named it Gibberella udum. He suspected that cloudy weather, high humidity and a combination of high and low temperatures were responsible for its production. However, Holliday (1980) does not accept the existence of a teleomorph.


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The hyphae are hyaline, slender, much branched, usually with little aerial growth (Butler, 1910). The pathogen produces three types of spores. Microconidia are usually aseptate, elliptical, hyaline singly but salmon-pink in mass and measure 6-11 x 2-3 µm in diameter. They are produced on simple or clustered, vertically branched conidiophores (Holliday, 1980). In culture, however, the colour may vary from white to salmon-pink and occasionally orange-red on PSA. Macroconidia are formed on short conidiophores and detach soon after abscission. They are hyaline, three to five septate, 15-15 x 3-5 µm in size, falcate with a distinct foot cell and an apical cell of decreasing diameter towards the tip which may be curved or hooked (Holliday, 1980). The chlamydospores are oval or spherical, single or in chains, thick-walled and measure 5-10 µm in diameter.

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 12 May 2022
Continent/Country/Region Distribution Last Reported Origin First Reported Invasive Reference Notes




IndiaPresentPresent based on regional distribution.
-Andhra PradeshPresent
-Madhya PradeshPresent
-Tamil NaduPresent
-Uttar PradeshPresent
-West BengalPresent
South KoreaPresent

North America

Trinidad and TobagoPresent

South America

-Minas GeraisPresent
-Rio de JaneiroPresent

Risk of Introduction

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Risk criteria Category

Economic importance High
Distribution Worldwide
Seedborne incidence Low
Seed transmission Recorded
Seed treatment Yes

Overall risk High

Notes on Phytosanitary Risk

No quarantine restrictions on F. udum are available because of the widespread distribution of the pathogen and the occurrence of pathogenic races. Long-distance dispersal of F. udum into new areas, and also of the spread of virulent races into different areas can occur with infected seed. It is, therefore, essential that the movement of seed from one area to another and from one country to another should only be allowed after treatment with thiram and benomyl.

Hosts/Species Affected

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F. udum is specific to pigeon pea, but it also causes wilt symptoms in Atylosia spp., a wild relative of pigeon pea (Kannaiyan et al., 1985).

Growth Stages

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Flowering stage, Fruiting stage, Seedling stage, Vegetative growing stage


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Pigeon pea plants are susceptible to infection by the wilt pathogen at all stages of development. The main symptom of the disease is wilting characterized by gradual, sometimes sudden, yellowing, withering and drying of leaves followed by drying of entire plant or some of its branches (Singh, 1973). Such plants exhibit loss of leaf turgidity, interveinal clearing and chlorosis before death. Isolated wilted plants may appear about a month after sowing and patches of dead plants in the field, usually at the flowering and podding stage, are the first indication of wilt (Reddy et al., 1990). The characteristic symptom of the disease in the adult plants is a purple band extending upwards from the base of the main stem. The band can clearly be seen in pigeon pea, when the green stems of healthy plants are compared to the diseased stems with coloured lines. Partial wilting is quite common and distinguishes the disease from termite damage, drought and Phytophthora blight, which also kill the plants. Partial wilting is due to infection of lateral roots, while total wilt is a result of tap root infection (Reddy et al., 1990). If an infected plant is split open below the purple band, browning of the stem and brown to black discoloration of xylem vessels is visible. Sometimes lower branches show die-back with the purple band extending from the tip downward and intensive xylem blackening (Reddy et al., 1993b).

List of Symptoms/Signs

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SignLife StagesType
Leaves / abnormal colours
Leaves / wilting
Stems / discoloration
Stems / internal discoloration
Whole plant / wilt

Biology and Ecology

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The pathogen is a facultative saprobe, which survives on plant parts left in the soil. Any route by which diseased soil may be transported from infested plot to non-infested plots, including farm implements, irrigation water etc., can potentially transmit the pathogen. Dissemination of the pathogen is also possible through seedborne infection.

Life Cycle

After the discovery of the perfect state of the pathogen, two phases of the disease cycle have been suggested: imperfect state (Fusarium udum) and perfect state (G. indica). In both phases of the disease, the pathogen occurs intercellularly, intracellularly and ectotrophically on the collar region as well as on the roots of infected plants. It produces a mass of mycelium and conidia. Both states of the pathogen occur simultaneously on the host. In the case of the imperfect state of the disease cycle, conidia and chlamydospores serve as resting structures for long-term survival. In the perfect state, perithecia are produced on the collar region of infected plants. The longevity of survival of the perfect state is yet to be confirmed (Upadhyay and Rai, 1983). The pathogen is heterothallic. If two opposite mating types come into contact they produce perithecia. Under laboratory conditions, perithecia are produced at 25±2°C. The ascus contains eight ascospores, which are two- to three-celled. The ascospores germinate to produce macro- and microconidia (Reddy et al., 1998). The production of the perfect state of this pathogen and its role in pathogenesis needs further investigation.

The pathogen survives in infected plant parts. The saprobic mycelium produces conidia. These conidia germinate at a wide range of temperatures (15-30°C) under laboratory conditions. When the germtubes come in contact with the roots of pigeon pea plants, they penetrate and colonize the xylem vessels. As the mycelium ages it produces chlamydospores which, after an initial period of dormancy, germinate and infect the roots of the plants. During the cropping season, the ectotrophic growth of the pathogen can also occur on infected roots and the collar.


The fungus is soilborne on diseased plant debris and it survives only on the tissues which it colonizes as a parasite (Subramanian, 1955). McRae (1924) reported that the fungus spreads about 3 m through the soil in one season, apparently along plant roots. The amount of wilt incidence was influenced by the retentive nature of the soil, but not directly by its water content (Mitra, 1925; McRae, 1926). Mundkar (1935) reported that low soil temperature and increasing plant maturity favoured wilt.

Shukla (1975), in a pot experiment, found more wilt inoculum in sand (94%) than in heavy, black soil (18%). Singh and Bhargava (1981) found the fungal population to be highest at 30% soil water-holding capacity and at soil temperatures between 20 and 30°C.

Infected seed may be the primary means of spread of F. udum over long distances and to new areas (Haware and Kannaiyan, 1992). The fungus can survive on infected plant debris in the soil for about 3 years. Disease incidence is more severe on vertisols than on alfisols and ratooning predisposes the plant to wilt (Reddy et al., 1990). Early sowing, weed management and vigorous crop growth favour wilt development. Long- and medium-duration types suffer more from wilt than short- and extra short-duration types (Reddy et al., 1998).

Though infection may occur in the seedling stage, maximum disease occurs at flowering and podding (Reddy et al., 1990) due to the extended time needed by the fungus to colonize the plant. Recent work at ICRISAT has shown that infected plants wilt only after the basal half of the main stem is colonized by the fungus, which takes approximately 3-4 months (Reddy et al., 1993a). This explains why there are low levels of wilt in short-duration types compared to long-duration and ratooned pigeon pea, as the former morphotypes are escaping wilt (Reddy et al., 1998). Any practice which leads to increased plant biomass in pigeon pea was found to increase susceptibility to wilt (Reddy et al., 1994). Higher biomass is produced when the crop is sown early, under weed-free and well-drained conditions, in fertile fields at low plant density and when the rains are well distributed.

Recent work has indicated that the fungus can survive to a depth of 120 cm in soil (Naik, 1993). Limited variation in the fungal population was found between the crop season and the off-season, especially at lower depth. Inoculum placed at a depth of 100 cm was found to infect pigeon pea but did not cause wilt. Only inoculum at 50 cm depth resulted in both infection and wilt (Naik, 1993). The economic threshold level of 20% wilt incidence in a susceptible cultivar was found to vary for vertisols and alfisols, being slightly lower for alfisols (830 c.f.u./g soil) than for vertisols (920 c.f.u./g soil). Threshold levels were higher for tolerant cultivars than for susceptible cultivars. The initial inoculum level in soil was found to be the major factor influencing final wilt incidence compared to soil moisture and temperature.

Pathogen Variability

Many studies have shown the existence of races of the pathogen (Baldev and Amin, 1974; Shit and Gupta, 1978; Reddy and Chaudhary, 1985; Pawar and Mayee, 1986; Gupta et al., 1988; Reddy and Raju, 1992) but a systematic study of the classification and distribution is lacking. This is largely due to the lack of a standardized inoculation technique, a set of differential lines and a rating scale.

Natural enemies

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Natural enemyTypeLife stagesSpecificityReferencesBiological control inBiological control on
Aspergillus niger Antagonist
Bacillus subtilis Antagonist
Streptomyces Antagonist

Seedborne Aspects

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The level of seed infection varies with cultivar. Although the pathogen was detected in about 19% of pigeon pea seed, disease transmission was only obtained in up to 4.25% of seedlings grown from infected seeds (Haware and Kannaiyan, 1992).

Effect on Seed Quality

Seedborne infection affects seed quality. Infected seed may become a source of primary infection in new areas or a source of a new race in areas where the disease is already present.

Seed Transmission

Seed harvested from wilted plants may carry the pathogen in a viable state. Such infected seed yielded F. udum on Nash's medium and could produce diseased seedlings (Haware and Kannaiyan, 1992). Seeds collected from healthy plants do not carry the pathogen. Seed infection differs between varieties.

Seed Treatment

A mixture of thiram + benomyl can completely eradicate F. udum from infected seed. This combination of fungicides was also effective in controlling disease transmission from infected seed (Haware and Kannaiyan, 1992).

Plant Trade

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Plant parts liable to carry the pest in trade/transportPest stagesBorne internallyBorne externallyVisibility of pest or symptoms
Roots fungi/hyphae; fungi/spores Yes Yes Pest or symptoms usually visible to the naked eye
Stems (above ground)/Shoots/Trunks/Branches fungi/hyphae; fungi/spores Yes Yes Pest or symptoms usually visible to the naked eye
True seeds (inc. grain) fungi/hyphae; fungi/spores Yes Yes Pest or symptoms usually invisible
Plant parts not known to carry the pest in trade/transport


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In an ICRISAT survey conducted from 1975 to 1980, annual losses in grain yield due to wilt were reported to be up to US$ 36 million (Kannaiyan et al., 1984). In eastern Africa, losses were estimated at US$ 5 million (Kannaiyan et al., 1984). Losses caused by the disease are dependent on the stage of wilt occurrence. If wilt occurs prior to podding, loss is total; however, only partial loss may result if wilt occurs at pod filling stage or later (Kannaiyan and Nene, 1981). Long-duration varieties may compensate for loss of early wilted plants. Yield loss in cultivars that are infected but do not show wilt symptoms have not yet been quantified. If wilt occurs during pod filling, the seed may become infected. Such seed may become a source of primary inoculum if not properly treated with fungicides.


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The fungus, as a rule, is confined to the vascular tissues and is both inter- and intracellular. The septate hyphae develop rapidly and the vessels are plugged with the hyphae. Chari et al. (1984) developed a method of detecting wilt before the appearance of symptoms using an electric current; the precision of the method can be up to 94%.

Interaction with other diseases

Wilt incidence is affected by infection with other diseases. Plants affected by sterility mosaic and phyllody were less affected by wilt than unaffected plants of the same genotypes (Chadha and Raychaudhuri, 1966). Similarly, root knot (Meliodogyne sp.) infection increased wilt susceptibility in both susceptible and resistant cultivars (Reddy et al., 1990). However, although infection by cyst nematode (Heterodera cajani) enhanced pathogenicity of F. udum in a wilt-susceptible cultivar, the fungus suppressed the reproduction of the nematode. The reaction of wilt-resistant genotypes was not affected by the presence of the nematode (Sharma and Nene, 1989).

Detection and Inspection

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Symptoms of the disease are distinct as described under Symptoms and can be identified in the field.

Prevention and Control

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Due to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Pesticides should always be used in a lawful manner, consistent with the product's label.

Resistant Crop Cultivars

There has been considerable research on the control of this disease. The major emphasis has been on the identification of resistance and the production of wilt-resistant cultivars (Deshpande et al., 1963). Pot and field screening techniques have been developed for the identification of resistance (Nene et al., 1981a; Haware and Nene, 1994). For a pot-screening technique, autoclaved pigeon pea stem pieces are mixed with non-autoclaved alfisol in pots (Reddy et al., 1998). The soil is inoculated with a F. udum culture multiplied on sand-pigeon pea flour (9:1) medium. A susceptible cultivar is sown and the wilted plant material is re-incorporated in the pots for three cycles.

Wilt-diseased plots have been used to screen crops against several vascular wilts. At ICRISAT Centre (Patancheru, India), it was found that the wilt disease develops more quickly in alfisols than in vertisols and shows up earlier in alfisols (Nene et al., 1980). The best way to develop the disease is to incorporate stubble from diseased plants into the soil and to grow wilt-susceptible cultivars in intermittent rows all over the field (Reddy et al., 1998). The search for sources of resistance to wilt in pigeon pea began as early as 1905 at Pune, India (Butler 1908, 1910). Many sources of resistance were identified at locations throughout India (Alam, 1931; Reddy et al., 1998). Despite the availability of large number of sources of resistance, only a few cultivars were popular with the farmers.

Multilocation tests conducted in India and eastern Africa helped to identify several lines resistant to wilt at several locations. Moderately resistant lines are available in all maturity groups. Some of these lines also show resistance across locations and seasons (Nene et al., 1981b, 1989; Amin et al., 1993). These lines includes ICP 8863 (Maruti), ICP 9145, ICP 9174, ICP 12745, ICPL 333, ICPL 8363, ICPL 88047, BWR 37. DPPA 85-2, DPPA 85-3, DPPA 85-8, DPPA 85-13, DPPA 85-14, Bandpalera, ICP 47769, ICP 9168, ICP 10958, ICP 11299, C11 (ICP 7118), BDN1 (ICP 7182). ICP 8864 and ICP 9145 have been released for commercial cultivation in Malawi and have become very popular (Reddy et al., 1995). The lines that showed resistance in Kenya were ICP 8869, ICP 9145 and ICP 10960. The lines that were resistant in Malawi are ICP 7855, ICP 9145, ICP 9154, ICP 9174, ICP 9177, ICP 10958, ICP 11297, ICP 11299 and ICP 12738. Maruti (ICP 8863), which has been released for commercial cultivation in India (Konda et al., 1986), has become very popular in peninsular India. Lines which combine wilt resistance and resistance to other diseases have been identified. For example, ICPL 87 and C11 possess resistance to wilt, sterility mosaic and Phytophthora blight; ICP 7667, ICP 8861, ICP 8662 (Hy3C) to wilt, sterility mosaic and powdery mildew; ICPL 81 to wilt and halo blight; BDN1 to wilt, Phytophthora blight and halo blight; ICP 8661, ICP 8662, ICP 8867, ICP 8869, ICP 10962 to wilt and Alternaria blight.

Inheritance of resistance

Limited information is available on the inheritance of resistance to the disease. In a cross between one resistant (ICP 8863) and two susceptible (ICP 2376 and LRG 3C) lines, resistance was found to be controlled by a single recessive gene. The gene was designated pwr1 (Jain and Reddy, 1995).

Nature of resistance

The nature of resistance was analysed in cultivars that were resistant and susceptible to wilt. The extract from a resistant cultivar (C-11-6) inhibited spore germination and the growth of the germtube. The inhibitory compounds in the resistant cultivar were identified as chlorogenic acid and caffeic acid (Murthy and Bagyaraj, 1983).

Cultural Practices

Pigeon pea is generally grown in inter- and mixed-cropping systems in rotation with other crops. However, since the fungus survives on deep-seated roots of the host, below the depth of ordinary cultivation, the success of rotation will depend upon the field sanitation (removal of affected plants with their roots), hot weather cultivation etc. A 4-5-year rotation has been found to free the field completely of the wilt pathogen (Singh, 1973). Field studies conducted at ICRISAT Centre (Patancheru, India) have shown that crops such as sorghum, castor, maize and groundnut inhibit the soil population of F. udum (Himani Bhatnagar, 1995). One-year breaks with either sorghum or fallow reduced wilt in the following pigeon pea crop from 60-90% to 16 and 31%, respectively (Natarajan et al., 1985). Pigeon pea rotation with tobacco has been recommended as a possible means of control because of the adverse effect of tobacco root exudates on the pathogen (Bose, 1938). Wilt incidence was increased with increasing pigeon pea biomass (Reddy et al., 1994).

Root exudates from a range of crops, which are frequently intercropped with pigeon pea, and green manuring reduce wilt incidence either by reducing population of F. udum or by increasing the antagonistic activity of the microbial population in the soil. A higher incidence of wilt in sterilized soil than in unsterilized soil was attributed to the action of antagonistic organisms such as Aspergillus niger, Rhizopus nigricans and Bacillus subtilis (Vasudeva and Roy, 1950; Vasudeva and Govindaswami, 1953). In later studies, Singh (1973) reported the production of 'bulbiformin' by B. subtilis, which inhibits the growth of F. udum. The antibiotic remains active in soil for 35 days. It was also found that the rhizosphere of resistant cultivars contains a greater population of Streptomyces spp., which are antagonistic to F. udum, than the rhizosphere of susceptible cultivars. The soil composition and certain cultural practices can affect wilt incidence (Shukla, 1975; Upadhyay and Rai, 1981). These findings indicate that the disease can be kept under control if conditions can be created in the soil that are suitable for the development of antagonistic organisms through organic amendments.

Chemical Control

Seedborne infection can be eliminated by seed dressing with a mixture of benomyl and thiram.


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Nene YL; Kannaiyan J; Reddy MV; Zote KK; Mahmood M; Hiremath RV; Shukla P; Kotasthane SR; Sengupta K; Jha DK; Haque MF; Grewal JS; Mahendra Pal, 1989. Multilocational testing of pigeonpea for broad-based resistance to Fusarium wilt in India. Indian Phytopathology, 42(3):449-453; 2 ref.

Om Gupta; Kotasthane SR; Khare MN, 1988. Strain variation in Fusarium udum in Madhya Pradesh, India. International Pigeonpea Newsletter, No. 7:22-25; 5 ref.

Padwick GW, 1940. The genus Fusarium. V. Fusarium udum Butler, F.vasinfectum Atk, and F. lateritum Nees var. uncinatum Wr. Indian Journal of Agricultural Science, 10:863-878.

Patil BG; Sable JE, 1973. A note on the screening of tur against wilt disease. Punjabrao Krishi Vidyapeeth Research Journal, 2(1):73-76

Pawar NB; Mayee CD, 1986. Reaction of pigeonpea genotypes and their crosses to Fusarium wilt. Indian Phytopathology, 39(1):70-74; 3 ref.

Pawar, S. V., Deshpande, G. D., Utpal Dey, 2012. Survey and survillance of pigeonpea wilt in Marathwada region. International Journal of Plant Protection, 5(2), 394-396.

Rai B; Upadhyay RS, 1981. Gibberella indica: the perfect state of Fusarium udum. Mycologia, 74(2):343-346

Rashmi, U. S., Chattannavar, S. N., 2016. Prevalence of Fusarium wilt of pigeon pea caused by Fusarium udum Butler. in Karnataka. Journal of Farm Sciences, 29(4), 521-523.

Rashtra Vardhana, 2017. Plant's diseases of district Ghaziabad and adjacent areas. Plant Archives, 17(1), 727-732.

Raut NK; Bhombe BB, 1971. A review of the work of selections of tur varieties resistant to Fusarium wilt at College of Agriculture, Parbhani (Maharashtra). College of Agriculture Magazine, Parbhani, 12:37-42.

Ravishanker, 1936. Isolation of wilt-resistant tur. Nagpur Agriculture College Magazine, 10:162-167.

Reddy MV; Nene YL; Raju TN; Kannaiyan J; Remanandan P; Mengesha MH; Amin KS, 1995. Registration of pigeonpea germplasm line ICP 9145 resistant to fusarium wilt. Crop Science, 35(4):1231; 4 ref.

Reddy MV; Raju TN, 1992. Pathogenic variability in pigeonpea wilt pathogen Fusarium udum. In: Muralidharan K, Reddy CS (eds). Plant Disease Problems in Central India. Proceedings Symposium Central Zone, Indian Phytopathological Society. Hyderabad, India: Directorate of Rice Research, 32-34.

Reddy MV; Raju TN; Chauhan YS, 1994. More pigeonpea biomass, more Fusarium wilt susceptibility - a hypothesis. International Chickpea and Pigeonpea Newsletter, No. 1:35-36; 4 ref.

Reddy MV; Raju TN; Naik MK, 1993. Infection and colonization of Fusarium udum in pigeonpea. Indian Phytopathology, 46:268 (Abstr.).

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Reddy MV; Sharma SB; Nene YL, 1990. Pigeonpea: disease management. The pigeonpea., 303-347; 10 pp. of ref.

Reddy NPE; Chaudhary KCB, 1985. Variation in Fusarium udum.. Indian Phytopathology, 38(1):172-173; 1 ref.

Sanjeev Kumar, Upadhyay, J. P., 2014. Studies on cultural morphological and pathogenic variability in isolates of Fusarium udum causing wilt of pigeonpea. Indian Phytopathology, 67(1), 55-58.

Sharma SB; Nene YL, 1989. Interrelationship between Heterodera cajani and Fusarium udum in pigeonpea. Nematropica, 19(1):21-28; 12 ref.

Shit SK; Gupta PKS, 1978. Possible existence of physiological races of Fusarium oxysporum f.sp. udum, the incitant of the wilt of pigeon pea. Indian Journal of Agricultural Sciences, 48(11):629-632

Shukla DS, 1975. Incidence of Fusarium wilt of pigeon pea in relation to soil composition. Indian Phytopathology, 28(3):395-396

Singh AP; Bhargava SN, 1981. Survival studies on the three species of Fusarium causing wilt of pigeon pea. Phytopathologische Zeitschrift, 100(4):300-311

Singh KP, 1980. The association of Giberella udum with the wilted arhar plants recorded again. Indian Phytopathology, 33:161.

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Subramanian CV, 1955. The ecological and the taxonomic problems in Fusaria. Proceedings of the Indian Academy of Sciences, Section B41:102-109.

Upadhyay RS; Rai B, 1981. Effect of cultural practices and soil treatments on incidence of wilt disease of pigeonpea. Plant and Soil, 62:309-312.

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Vaheeduddin S, 1956. Selection of tur (Cajanus cajan L.) resistant varieties against wilt (Fusarium udum Butler). Agricultural College Journal of Osmania University, 3:12-13.

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Vasudeva RS, 1952. Investigation on the inhibitory action of Bacillus subtilis on Fusarium udum Butl., the fungus causing wilt of pigeonpea (Cajanus cajan). Annals of Applied Biology 39:229-238.

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Wang, C. L., Dai, Y. L., 2018. First report of sunn hemp Fusarium wilt caused by Fusarium udum f. sp. crotalariae in Taiwan. Plant Disease, 102(5), 1031. doi: 10.1094/PDIS-10-17-1563-PDN

Williams FJ; Grewal JS; Amin KS, 1968. Serious and new diseases of pulse crops in India in 1966. Plant Disease Reporter, 52:300-304.

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Distribution References

Abdel-Hafez S I I, Ismail M A, Hussein N A, Abdel-Hameed N A, 2012. Fusaria and other fungi taxa associated with rhizosphere and rhizoplane of lentil and sesame at different growth stages. Acta Mycologica. 47 (1), 35-48. DOI:10.5586/am.2012.005

Abdel-Hafez S I I, Ismail M A, Hussein N A, Abdel-Hameed N A, 2014. Fusarium species and other fungi associated with some seeds and grains in Egypt, with 2 newly recorded Fusarium species. Journal of Biology and Earth Sciences. 4 (2), B120-B129.

CABI, Undated. CABI Compendium: Status inferred from regional distribution. Wallingford, UK: CABI

CABI, Undated a. CABI Compendium: Status as determined by CABI editor. Wallingford, UK: CABI

Datta J, Lal N, 2013. Genetic diversity of Fusarium wilt races of pigeonpea in major regions of India. African Crop Science Journal. 21 (3), 201-211.

EPPO, 2022. EPPO Global database. In: EPPO Global database, Paris, France: EPPO. 1 pp.

IPPC, 2010. First report of Fusarium udum. In: IPPC Official Pest Report, Rome, Italy: FAO.

Kiprop E K, Baudoin J P, Mwang'ombe A W, Kimani P M, Mergeai G, Maquet A, 2002. Characterization of Kenyan isolates of Fusarium udum from pigeonpea [Cajanus cajan (L.) Millsp.] by cultural characteristics, aggressiveness and AFLP analysis. Journal of Phytopathology. 150 (10), 517-525. DOI:10.1046/j.1439-0434.2002.00798.x

Kiprop E K, Mwang'ombe A W, Baudoin J P, Kimani P M, Mergeai G, 2002a. Cultural characteristics, pathogenicity and vegetative compatibility of Fusarium udum isolates from pigeon pea (Cajanus cajan (L.) Millsp.) in Kenya. European Journal of Plant Pathology. 108 (2), 147-154. DOI:10.1023/A:1015012702846

Pawar S V, Deshpande G D, Utpal Dey, 2012. Survey and survillance of pigeonpea wilt in Marathwada region. International Journal of Plant Protection. 5 (2), 394-396.

Rashmi U S, Chattannavar S N, 2016. Prevalence of Fusarium wilt of pigeon pea caused by Fusarium udum Butler. in Karnataka. Journal of Farm Sciences. 29 (4), 521-523.

Rashtra Vardhana, 2017. Plant's diseases of district Ghaziabad and adjacent areas. Plant Archives. 17 (1), 727-732.

Sanjeev Kumar, Upadhyay J P, 2014. Studies on cultural morphological and pathogenic variability in isolates of Fusarium udum causing wilt of pigeonpea. Indian Phytopathology. 67 (1), 55-58.

Wang C L, Dai Y L, 2018. First report of sunn hemp Fusarium wilt caused by Fusarium udum f. sp. crotalariae in Taiwan. Plant Disease. 102 (5), 1031. DOI:10.1094/PDIS-10-17-1563-PDN

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