Mycosphaerella cryptica. [Descriptions of Fungi and Bacteria].

1995 ◽  
Author(s):  
P. W. Crous
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Leaf Spots ◽  
Leaf Drop ◽  
Ascospore Release

Abstract A description is provided for Mycosphaerella cryptica. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Eucalyptus agglomerata, E. baxteri, E. bicostata, E. blakelyi, E. bosistoana, E. botryoides, E. bridgesiana, E. brookeriana, E. camaldulensis, E. camphora, E. cladocalyx, E. consideniana, E. cypellocarpa, E. dalrympleana, E. delegatensis, E. dendromorpha, E. diversicolor, E. dives, E. dunnii, E. elata, E. fastigata, E. fraxinoides, E. globoidea, E. globulus, E. gomphocephala, E. haemastoma, E. goniocalyx, E. gunnii, E. macrorhyncha, E. marginata, E. melliodora, E. micrantha, E. microcorys, E. muellerana, E. nitens, E. nitida, E. obliqua, E. ovata, E. pauciflora, E. phaeotricha, E. polyanthemos, E. quadrangulata, E. radiata, E. regnans, E. saligna, E. sideroxylon, E. sieberi, E. smithii, E. tereticornis, E. viminalis (61, 7183). DISEASE: Leaf spots, cankers on shoots, twigs and petioles, causing leaf drop and twig die-back of Eucalyptus. GEOGRAPHICAL DISTRIBUTION: Australia, New Zealand. TRANSMISSION: Pseudothecia require humidities reaching saturation for ascospore release. Spores are wind-borne (61, 7182).

Cochliobolus eragrostidis. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
Puerto Rico ◽  
Hong Kong ◽  
New Zealand ◽  
Sri Lanka ◽  
Sierra Leone ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Solomon Islands ◽  
New Guinea ◽  
Leaf Spots

Abstract A description is provided for Cochliobolus eragrostidis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Acacia, Agave, Allium, Alysicarpus, Amorphophallus, Anacardium, Arachis, Areca, Billbergia, Calamus, Callitris, Calotropis, Camellia, Cananga, Capsicum, Citrullus, Citrus, Clerodendron, Cocos, Coffea, Colocasia, Cymbopogon, Dendrobium, Digitaria, Dioscorea, Dracaena, Durio, Elaeis, Eragrostis, Eucalyptus, Euphorbia, Furcraea, Gladiolus, Glycine, Gossypium, Heliconia, Hevea, Hystrix, Ipomoea, Kaempferia, Lycopersicon, Mangifera, Manihot, Mystroxylon, Musa, Neyraudia, Oldenlandia, Opuntia, Oryza, Panicum, Pennisetum, Pentas, Phalaenopsis, Phaseolus, Pinus, Polygala, Pueraria, Raphia, Raphanus, Rhodomyrtus, Rhoeo, Rottboellia, Saccharum, Sesamum, Sorghum, Spinacia, Sporobolus, Stylosanthes, Theobroma, Thrasya, Tradescantia, Trichosanthes, Triplochiton, Triticum, Vanda, Vigna, Zea, Zingiber and soil. DISEASE: Leaf spots. GEOGRAPHICAL DISTRIBUTION: Australia, Bangladesh, Belize, Brazil, Brunei, Burma, Colombia, Cuba, Fiji, Ghana, Guinea, Honduras, Hong Kong, India, Indonesia, Japan, Kenya, Kuwait, Malaysia, New Zealand, Nigeria, Papua New Guinea, Puerto Rico, Sierra Leone, Singapore, Solomon Islands, Sri Lanka, Trinidad, USA, Zambia, Zaire. TRANSMISSION: By wind-borne conidia.

Drechslera nobleae. [Descriptions of Fungi and Bacteria].

1986 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
New Zealand ◽  
Great Britain ◽  
Geographical Distribution ◽  
Interspecific Hybrids ◽  
Rye Grass ◽  
Leaf Spots

Abstract A description is provided for Drechslera nobleae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Lolium and certain interspecific hybrids of Lolium. DISEASE: Leaf spots, yellowing and die-back of rye grass. Also seed-borne. GEOGRAPHICAL DISTRIBUTION: Australia, Great Britain, New Zealand, USA. TRANSMISSION: By air-borne conidia.

Pseudocercospora cladosporioides. [Descriptions of Fungi and Bacteria].

2004 ◽  
Author(s):  
J. C. David
Keyword(s):  
New Zealand ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Olea Europaea ◽  
Fruit Rot ◽  
Leaf Drop ◽  
Olea Europaéa

Abstract A description is provided for Pseudocercospora cladosporioides. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Cercosporiosis, Leaf drop (defoliation) and fruit rot. HOSTS: Olea europaea (Oleaceae). GEOGRAPHICAL DISTRIBUTION: AFRICA: Algeria, Tunisia. NORTH AMERICA: USA (California). SOUTH AMERICA: Argentina, Brazil (São Paolo) [http://nt.ars-grin.gov/fungaldatabases], Chile. AUSTRALASIA: Australia (NSW), New Zealand (MCKENZIE, 1990). EUROPE: Greece (PAPPAS, 1993), Italy, Montenegro (ZORA et al., 1994), Portugal, Spain (MORAL & MEDINA, 1985). TRANSMISSION: Not known but presumably by wind.

Peronospora jaapiana. [Descriptions of Fungi and Bacteria].

1981 ◽  
Author(s):  
S. M. Francis
Keyword(s):  
New Zealand ◽  
Downy Mildew ◽  
Geographical Distribution ◽  
Leaf Surface ◽  
Leaf Material ◽  
Leaf Spots

Abstract A description is provided for Peronospora jaapiana. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Rheum officinale, R. palmatum, R. rhaponticum, R. undulatum. DISEASE: Downy mildew of rhubarb. Seedlings in cold frames and plants in the field may be attacked and heavy losses caused in cold, wet seasons. The fungus causes a severe spotting and eventual destruction of the leaves. Plants may be almost completely defoliated. The earliest symptoms are conspicuous yellowish spots of 1 cm or more diameter which appear on the upper leaf surface. These areas are at first delimited by the veins but in severe attacks they soon spread causing the veins to break and the leaves then fall to pieces. With age the leaf spots become dry and brown and very brittle. The condiophores which may be seen on the under surface of the leaves beneath the yellow spots in the earlier phases of the disease were sparingly produced in the material seen (IMI 251354) and resembled the downy mildew of rose, Peronospora sparsa, in this respect. They are reported as forming a grey to fawn downy growth in Australia when conditions are moist. GEOGRAPHICAL DISTRIBUTION: Asia (USSR (Estonia, Latvia)); Australasia (Australia, New Zealand); Europe (Britain, Denmark, France, Germany, Norway, Poland, Switzerland); N. America (Canada, USA). TRANSMISSION: No oospores have been reported for this species and the pathogen is said to perennate as mycelium in the young shoots of propagating roots (Chupp & Sherf, 1960). The hyphae of P. jaapiana contain unusually large amounts of glycogen which enables them to overwinter in decaying leaf material on the ground (Magnus, 1910).

Rhagadolobium dicksoniifolium. [Descriptions of Fungi and Bacteria].

2003 ◽  
Author(s):  
C. A. Inácio
Keyword(s):  
New Zealand ◽  
Geographical Distribution ◽  
Leaf Spots

Abstract A description is provided for Rhagadolobium dicksoniifolium. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Parasitic on living leaves, not causing leaf spots. HOSTS: Dicksonia antarctica, D. squarrosa (Dicksoniaceae). GEOGRAPHICAL DISTRIBUTION: AUSTRALASIA: Australia, New Zealand. TRANSMISSION: Presumably by airborne ascospores.

Phialophora cyclaminis. [Descriptions of Fungi and Bacteria].

1991 ◽  
Author(s):  
M. A. J. Williams
Keyword(s):  
New Zealand ◽  
The Netherlands ◽  
Geographical Distribution ◽  
Leaf Spots

Abstract A description is provided for Phialophora cyclaminis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cyclamen, Cymbidium, Sida, Theobroma. DISEASE: Isolated from leaf spots of Cymbidium and associated with wilt of Theobroma, but pathogenicity has not been confirmed. GEOGRAPHICAL DISTRIBUTION: Africa: Zaire; Asia: India, Malaysia; Australasia: Australia, New Zealand; Europe: Germany, Italy, The Netherlands, Poland, U.K. TRANSMISSION: The fungus is not uncommonly isolated from soils and wood.

Effect of a protectant copper application on Psa infection of kiwifruit trap plants

2017 ◽  
Vol 70 ◽  
pp. 310-314
Author(s):  
J.L. Tyson ◽  
S.J. Dobson ◽  
M.A. Manning
Keyword(s):  
New Zealand ◽  
Disease Control ◽  
Pseudomonas Syringae ◽  
Low Risk ◽  
Bacterial Canker ◽  
Complete Protection ◽  
Leaf Spots ◽  
Copper Compounds ◽  
Trap Plants

Pseudomonas syringae pv. actinidiae (Psa) causes bacterial canker of kiwifruit, which is an ongoing threat to New Zealand kiwifruit production. Disease control depends on orchard practices such as removal of visibly diseased material, pruning during low-risk periods, and the application of foliar bactericides. Although the use of copper compounds on Actinidia species (kiwifruit) can cause phytotoxicity, copper-based formulations remain a key component of Psa control in New Zealand. The effect of single copper applications on Psa infection of ‘Hort16A’ trap plants was studied over the Spring of 2014 (Sept—Nov). Psa leaf spots were observed at the beginning of October, appearing first on the untreated plants. Although the copper sprays did not achieve complete protection, particularly as the inoculum built up during November, the copper-sprayed plants always had less disease than the untreated plants.

Cercostigmina protearum var. protearum. [Descriptions of Fungi and Bacteria].

1999 ◽  
Author(s):  
P. M. Kirk
Keyword(s):  
South Africa ◽  
Geographical Distribution ◽  
Leaf Spots ◽  
Brown Leaf

Abstract A description is provided for Cercostigmina protearum var. protearum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Causing round or sometimes irregular, pale brown or greyish-brown leaf spots 5-17 mm diameter. HOSTS: Leucospermum conocarpum, Protea. TRANSMISSION: By air-borne conidia. GEOGRAPHICAL DISTRIBUTION: AFRICA: South Africa.

Calonectria spathulata. [Descriptions of Fungi and Bacteria].

1993 ◽  
Author(s):  
P. W. Crous
Keyword(s):  
Geographical Distribution ◽  
Araucaria Angustifolia ◽  
Leaf Spots ◽  
Eucalyptus Viminalis

Abstract A description is provided for Calonectria spathulata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Araucaria angustifolia; Eucalyptus viminalis, E. cloeziana, E. grandis, Pteridium sp. DISEASE: Leaf spots (65, 6198). GEOGRAPHICAL DISTRIBUTION: Brazil. TRANSMISSION: Probably wind and splash dispersed.

Cochliobolus cynodontis. [Descriptions of Fungi and Bacteria].

1990 ◽  
Author(s):  
A. Sivanesan
Keyword(s):  
South Africa ◽  
Puerto Rico ◽  
New Zealand ◽  
Papua New Guinea ◽  
Geographical Distribution ◽  
Cynodon Dactylon ◽  
New Guinea ◽  
Leaf Blight ◽  
Bermuda Grass

Abstract A description is provided for Cochliobolus cynodontis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cynodon dactylon (very common on this host), other Cynodon spp., Agropyron, Ammi, Arecastrum, Axonopus, Calathea, Chamaedorea, Chrysalidocarpus, Dactyloctenium, Eleusine, Hordeum, Ipomoea, Lycopersicon, Muhlenbergia, Oryza, Panicum, Pennisetum, Poa, Rhapis, Secale and Zea. DISEASE: Leafspot of Bermuda grass end other crops, leaf blight end brown patches of turf, lawns end golflinks. GEOGRAPHICAL DISTRIBUTION: Argentina, Australia, Bangladesh, Brazil, Brunei, Egypt, Ghana, Guinea, India, Israel, Iraq, Italy, Japan, Kenya, Malaysia, New Zealand, Pakistan, Papua New Guinea, Puerto Rico, Spain, South Africa, Sudan, Tanzania, Trinidad, Turkey, USA, USSR, Venezuela, Yugoslavia and Zambia. TRANSMISSION: By wind-borne conidia and seed-borne.

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