Suggested Standard Method for Field Tests with Wooden Stakes

Abstract

PESTICIDES — AN AUTO-TUTORIAL APPROACH. G. W. Ware. W. H. Freeman San Francisco, USA and Reading, UK, 1975. Pp. 191

PLANTS CONSUMED BY MAN. B. Brouk. Academic Press, London, 1975. ISBN 0-12-1336450X. Pp. ix + 479, illustrated. Price £14.80.

MAJOR CROP PESTS IN PENINSULAR MALAYSIA, Agricultural Division Bulletin No. 138. A. Yunus A. Balasubramanian. Ministry of Agriculture and Rural Development, Jalan Swettenham, Kuala Lumpur, 1975. Pp. 182. Price Malayan $3.00.

1975 WEED CONTROL MANUAL AND HERBICIDE GUIDE. Meister Publishing Co., 37841 Euclid Ave., Willoughby, Ohio, 44094, USA. Price $5.00.

PESTICIDE RESIDUES IN FOOD. Report of the 1974 Joint FAO/WHO Meeting. World Health Organization Technical Report Series, 1975, No. 574. ISBN 92 4 120574 1. Pp. 37. Price Sw. fr. 6.0. (French, Russian, and Spanish editions in preparation).

ELEMENTS OF ECONOMIC ENTOMOLOGY. B. Vasanlharaj David T. Kumaraswami. Popular Book Depot, Madras 600, 034, 1975. Pp. 507. Price Rs. 25 Library edition Rs. 30, $10.00, £4.00

ECOLOGY AND CONTROL OF VECTORS IN PUBLIC HEALTH. Twenty-first Report of the WHO Expert Committee on Insecticides. World Health Organization Technical Report Series, 1975, No. 561. Pp. 35. Price Sw. fr. 6.0. (French, Russian, and Spanish editions in preparation). Available from WHO Distribution and Sales, 1211, Geneva 27, Switzerland.

WEED CONTROL IN THE SOUTH PACIFIC. Michel Lambert. South Pacific Commission, Noumea, New Caledonia, Handbook No. 10, 1973. Pp. 119.

AQUATIC WEED IDENTIFICATION AND CONTROL MANUAL. A. P. Burkhalter et al. Florida Department of Natural Resources, USA, Pp. 100. Price $2.50.

PREVALENT WEEDS OF CENTRAL AMERICA. J. G. L. Garcia B. MacBryde, A. R. Molina O. Herrera-MacBryde. International Plant Protection Centre, Oregon State University, Corvallis, OR 97331, USA, 1975. Pp. 162.

KEY FOR THE FIELD IDENTIFICATION OF APTEROUS AND ALATE CEREAL APHIDS WITH PHOTOGRAPHIC ILLUSTRATIONS. R. N. B. Prior. Agricultural Development and Advisory Service, Ministry of Agriculture, Fisheries and Food (Publications), London, 1974. Plates 8, Figs. 8. Price £2.10.

THE GENERA OF FUNGI SPORULATING IN PURE CULTURE. Second edition. J. A. von Arx. J. Cramer FL-9490 Vaduz, Germany, 1974. ISBN 3 7682 06939 Pp. 315. Price DM100

AFRICA THE DEVASTATED CONTINENT? (Monographiae Biologicae, Volume 26) A. de Vos. Dr W. J. Junk b.v., Publishers 1975. ISBN 90 6193 078 2. Pp. 240. Dutch Guilders 65.

CHEMICAL ANALYSIS OF ECOLOGICAL MATERIALS. E. Allen H. M. Grimshaw J. A. Parkinson C. Quarmby. Blackwell Scientific Publications, Oxford, 1974. ISBN 0 632 00321 9. Pp. x + 565. Price £12.50.     

New Books

Abstract

TROPICAL AGRICULTURE by Gordon Wrigley. Faber and Faber, London, 1969. pp. 376. Price £4. 5s. 0d.

ORGANISATION AND ADMINISTRATION OF AGRICULTURAL RESEARCH by I. Arnon. Elsevier Publishing Company, London, 1968. pp. xii + 342. Price £4.

TEA GROWERS HANDBOOK 1969. Tea Boards of Kenya, Tanganyika and Uganda. pp. xxxi + 152. Obtainable from Tea Research Institute of East Africa, Box 91, Kericho, Kenya. Price £2. 0s. 0d.

A MANUAL OF THE FRESH-WATER ALGAE IN NORTH CAROLINA by L. A. Whitford and G. J. Schumacher. Technical Bulletin No. 188. Published by the North Carolina Agricultural Experiment Station, 1969. pp. 313, pl.71.

METHODS OF STUDYING PLANT HORMONES AND GROWTH-REGULATING SUBSTANCES. Agricultural Handbook No. 336. US Department of Agriculture, Agricultural Research Service, 1968. pp. 140. Obtainable from the Superintendent of Documents, US Government Printing Office, Washington, DC 20402, USA. Price 55 cents.

THE DISTRIBUTION OF THE DAMAGE POTENTIAL OF THE DESERT LOCUST Schistocerca gregaria Forsk. - Anti-Locust Memoir 10. By F. T. Bullen. Published by Anti-Locust Research Centre, College House, Wright's Lane, London W.8. pp. 44 + 29 maps, 4 figs. Price 10s. 6d.

TERMITES AS PESTS OF CROPS AND TREES. By W. Victor Harris. Published by Commonwealth Agricultural Bureaux, Farnham Royal, Bucks., England. pp. 41. Price £1. 0s. 0d.

INSECTS AND INSECTICIDES by R. C. Reay. Contemporary Science Paperbacks No. 39. Published by Oliver and Boyd, Edinburgh, pp. viii + 152. Price 7s. 6d.

RECOMMENDED COMMON NAMES FOR PESTICIDES, British Standards Institution. Fourth revision June 1969. BS 1831: 1969. pp. 108. Obtainable from BSI Sales Branch, 101-113 Pentonville Road, London N.1., England. Price £2.

DISEASES IN FREE-LIVING WILD ANIMALS - Symposium No. 24 of the Zoological Society of London. Edited by A. McDiarmid. Published by Academic Press, London. pp. xxiv + 332. Price £4. 4s. 0d.

AERIAL APPLICATION OF AGRICULTURAL CHEMICALS. Agricultural Handbook No. 287. US Department of Agriculture, 1965. pp. 48. Obtainable from the Superintendent of Documents, US Government Printing Office, Washington, DC 20402, USA. Price 20 cents.     

Recent WHO Mosquito Control Research—a Summary

Abstract

APPLYING PESTICIDES: MANAGEMENT, APPLICATION, SAFETY. American Association for Vocational Instructional Materials, Athens, Georgia, USA, 1976. Pp. 96. US $4.95.

METHODS OF APPLYING HERBICIDES FOR AQUATIC WEED CONTROL. D. N. Riemer and J. A. Meade. Cooperative extension services of the northeastern states, New Brunswick, USA. Pp. 17

ANNUAL REVIEW OF ENTOMOLOGY, VOLUME 23. Edited by T. E. Mittler, C. N. Smith and V. H. Resh. Annual Reviews Inc., Palo Alto, California. USA, 1978. ISSN 0066 4170. ISBN 0 8234 01234. Pp. 523 Price US $17.00 in USA, US $17.50 elsewhere.

PLANT DISEASE EPIDEMIOLOGY. Edited by P. R. Scott and A. Bainbridge. Blackwell Scientific Publications Ltd, 1978. ISBN 0 632 00372 3. Pp. 329. Price £9.00.

PENTACHLOROPHENOL. Edited by K. Ranga Rao. Plenum Press, New York and London, 1978. ISBN 0 306 36312 7. Pp. xiv + 402. Price US $45.00.

THE TROPICAL TUBER CROPS: YAMS, CASSAVA, SWEET POTATO AND COCOYAMS. I. C. Onwueme. John Wiley, Chichester and New York, 1978. ISBN 0 471 99608 (cloth); 0 471 99607 (paper). Pp. xiv + 234. Price £11.00 cloth; £5.50 paperback.

DISEASES, PESTS AND WEEDS IN TROPICAL CROPS. Edited by J. Kranz, H. Schmutterer and W. Koch.     

Book reviews

Genetics of Plant Pathogenic Fungi, edited by G. S. Sidhu.
Principles of Seed Pathology, by V. K. Agarwal and J.B. Sinclair.
Fungi in Biological Control Systems, edited by M. N. Burge.
Laboratory Guide for Identification of Plant Pathogenic Bacteria, second edition, edited for the American Phytopathological Society by N. W. Schaad.
Pesticide Chemistry, by G. Matolcsy, M. Nadasy and V. Andriska.
The Epidemiology and Ecology of Infectious Disease Agents, edited by R. M. Anderson and J. M. Thresh.
Wheat Breeding: Its Scientific Basis, edited by F. G. H. Lupton.
Fungal Infection of Plants, edited by G. F. Pegg and P. G. Ayres.     

Book reviews

Fungal Nutrition and Physiology, by Michael O. Garraway atid Robert C. Evans.
The Cereal Rusts, volume 1, edited by W. R. Bushnell and A. P. Roelfs.
Progress in Pesticide Biochemistry and Toxicology, volume 4. edited by D. H. Hutson and T. R, Roberts.
Pest and Vector Management in the Tropics, by A. Youdeowei and M. W. Service.
Plant Diseases: Infection, Damage and Loss. edited for the British Society for Plant Pathologists by R. K. S. Wood and G. J. Jellis.
Plant Pathogens and their Control in Horticulture, by G. R. Dixon.
Diseases of Greenhouse Plants, by J. T. Fletcher.
Pest Management, by G, A. Matthews.     

Critical periods for weed competition

Abstract

BIOCHEMICAL INSECT CONTROL: ITS IMPACT ON ECONOMY, ENVIRONMENT AND NATURAL SELECTION. M. Sayeed Quraishi. John Wiley and Sons, New York, 1977. ISBN 0 471 70275 7. Pp. viii + 280. Price £14.25, US $24.50.

DISEASES, PESTS AND WEEDS IN TROPICAL CROPS. Edited by Jürgen Kranz, Heinz Schmutter and Werner Koch. Verlag Paul Parey, Berlin and Hamburg, 1977. ISBN 3 489 67626 8. Pp. xv + 666, Colour plates 64. Price Dm. 68.

ENVIRONMENTAL TOXICOLOGY. A GUIDE TO INFORMATION SOURCES. Edited by R. L. Rudd. Gale Research Company, Detroit, 1977. ISBN 0 8103 13421. Pp. xii + 266. Price US $18.00

THE SAFETY OF THE HERBICIDES 2,4-D AND 2,4.5-T. D. J. Turner. Her Majesty's Stationery Office, London, 1977. ISBN 0 11 710149 4. Pp. 56. Price £1.20

PESTICIDE CHEMISTRY IN THE TWENTIETH CENTURY. Edited by J. R. Plimmer. ACS Symposium Series No. 37, American Chemical Society, Washington, USA, 1977. ISBN 0 8412 0364 4. Pp. 310. Price US $20.00

PESTICIDES IN AQUATIC ENVIRONMENTS. Edited by M. A. Q. Khan. Environmental Research Series, Volume 10. Plenum Press, New York and London, 1977. ISBN 0306 36310 0. Pp. xiii + 257. Price US $35.40, £18.75

THE FUTURE FOR INSECTICIDES. Edited by Robert L. Metcalf and John J. McKelvey Jr. John Wiley and Sons, New York, 1976. ISBN 0 471 59860 7. Pp. xiv + 524. Price £14.70, US $30.20

SYNTHETIC PYRETHROIDS. Edited by Michael Elliott. ACS Symposium Series No. 42, American Chemical Society, Washington, D.C., 1977. ISBN 0 84120368 7. Pp. xi + 229. Price £15.75

WEED CONTROL HANDBOOK. Volume 1, Principles, Edited by J. D. Fryer and R. J. Makepeace. Sixth Edition. Blackwell, London, 1977. ISBN 0632 00209 3. Pp. xvii + 510. Price £13.50

A PARTIAL BIBLIOGRAPHY OF WEED RESEARCH AND CONTROL: PUBLICATIONS FOR SOUTH AND CENTRAL AMERICA, THE CARIBBEAN AND MEXICO, 1942–1976. Second Edition. International Plant Protection Center, Oregon, USA, 1978. Pp. xiii + 241. Price US $5.00

MAJOR INSECT AND MITE PESTS OF AUSTRALIAN CROPS. E. Hassan, Ento Press, Queensland, Australia. ISBN 0 959 6962 88. Pp. 236.

THE BIOLOGY OF TRIBOLIUM, WITH SPECIAL EMPHASIS ON GENETIC ASPECTS, Volume 3. A. Sokoloff. Oxford University Press, Oxford, 1977. ISBN 0 19 857512 2. Pp. xix + 612. Price £25.00

TOOLS FOR AGRICULTURE. A buyer's guide to low-cost agricultural implements. Compiled by John Boyd. Intermediate Technology Publications Ltd., London, 1976. ISBN 0 903031 22 1. Pp. 173. Price £4.00

SEED PATHOLOGY. (Volumes I and II). Paul Neergaard. MacMillan Press Ltd., London, 1977. ISBN 0 333 19273 7. Pp. 1187. Price £50.00

CONTROL OF TROPICAL AQUATIC WEEDS. A. H. Pieterse. Bulletin 300, Department of Agricultural Research of the Royal Tropical Institute, Amsterdam, 1977. Pp. 20.     

Book Reviews

Plant Pathology, third edition, by G. N. Agrios.
The Viruses: The Plant Viruses. Vol. 3, Polyhedral Virions with Monopartite RNA Genomes, edited by Renate Koenig.
Biological and Cultural Tests for Control of Plant Diseases, Vol. 3, 1988, edited by J. R Hartman.
Soybean Diseases of the North Central Region. edited by T. D. Wyllie and D. H. Scott.
Compendium of Sweet Potato Diseases, by C. A. Clark and J. W. Moyer.
Compendium of Grape Diseases, edited by R. C. Pearson and A. C. Goheen.
Maize Diseases: A Reference Source for Seed Technologists, by D. C. McGee.
The Grass Crop: The Physiological Basis of Production, edited by M. B. Jones and A. Lazenby.     

Book reviews

Book review oin this Articles:
Biochemistry of Virus-Infected Plants, by R. S. S. Fraser.
Soilborne Plant Pathogens, by G. W. Bruehl.
Advances in Plant Pathology, Volume 5, edited by D. S. Ingram and P. H. Williams.
Microbiology of the Phyllosphere, edited by N J Fokkema and J. van den Heuvel.
Genetic Basis of Biochemical Mechanisms of Plant Disease, edited by J. V. Groth and W. R. Bushnell.
Plant Pathogenic Fungi, by J. A. von Arx. Beihefte zur Nova Hedwigia
Mycotoxicology, by W. F. O. Marasas and P E Nelson.     

鹅掌柴真菌病害鉴定

 调查鉴定了广州地区鹅掌柴(Schefflera actinophylla (Endl.) Harms.)上12种真菌病害及其病原菌,以叶疫病和炭疽病危害较重。病原菌中有3个新种:鹅掌柴小球腔菌Leptosphaeria schefflerae P.G.X i,P.K.Chi et Z.D.Jiang,鹅掌柴生尾孢Cercospora schefflericola P.G.Xi,P.K.Chi et Z.D.Jiang,鹅掌柴拟茎点霉Phomopsis schefflerae P.G.Xi,P.K.Chi et Z.D.Jiang和一个新组合:鹅掌柴茎点霉Phoma scheffleri (Chen) P.G.Xi et P.K.Chi。新种提供了拉丁文简介、描述和绘图,研究的标本保存在华南农业大学真菌标本室。     

Book reviews

Books Reviewed in this Article:
The British Ascomycotina: an Annotated Checklist , by P. F. Cannon, D. L. Hawksworth and M. A. Sherwood-Pike.
Crop Protection Handbook-Grass and Clover Swards , edited by R. D. Williams.
Applied Plant Virology , by David G. A. Walkey.
Applied Plant Virology , by David G. A. Walkey.
Compendium of Pea Diseases , edited by D. J. Hagedorn.
Methods in Plant Virology , by Stephen A. Hill.
Compendium of Pea Diseases , edited by D. J. Hagedorn.
Methods in Plant Virology , by Stephen A. Hill.     

Book reviews

Book reviews in this article:
Phytotoxins and Plant Pathogenesis , edited by A. Graniti.
Plant Protection and Quarantine , edited by R. P. Kahn.
Maladies de la Tomate, Observer, Identifier, Lutter , by D. Blancard.
Ennemis et Maladies des Prairies , edited by G. Raynal, J. Gondran, R. Bournoville and M. Courtillot.
Biological Control of Microbial Plant Pathogens , by R. Campbell.
The Wheat Rusts: Breeding for Resistance , by D. R. Knott.
Fungi on Plants and Plant Products in the United States , by D. F. Farr, G. F. Bills, G. P. Chamuris and A. Y. Rossman.     

Book reviews

Disease Resistance in Plants, 2nd Edition, by J. E, Vanderplank.
The Dynamics of Host Defence, edited by J, A, Bailey and B. J. Deverall.
Pest and Pathogen Control: Strategic, Tactical and Policy Models, edited by G. R. Conway.
Names of British Plant Diseases and their Causes.
Plant Physiological Disorders.
Diseases of Field Crops in Canada, edited by J. W. Martens, W. L. Seaman and T. G. Atkinson.
Microfungi on Land Plants, an Identiflcation Handbook, by M. B. Ellis and J. P, Ellis
The Preservation and Maintenance of Living Fungi, by D. Smith and Agnes H S. Onions.     

Book reviews

Books review in this article:
White Rusts. A Review of Economically Important Species , by G. S. Saharan and P. R. Verma
Colletotrichum: Biology, Pathology and Control , edited by J. A. Bailey and M. J. Jeger
Manual of Pesticide Residue Analysis Volume II , edited by H.-P. Thier and J. Kirchoff
Pest Management and the Environment in 2000 , edited by A. Aziz, S. A. Kadir and H. S. Barlow     

Genetic analysis and molecular mapping of wheat genes conferring resistance to the wheat stripe rust and barley stripe rust pathogens

ABSTRACT Stripe rust is one of the most important diseases of wheat and barley worldwide. On wheat it is caused by Puccinia striiformis f. sp. tritici and on barley by P. striiformis f. sp. hordei Most wheat genotypes are resistant to P. striiformis f. sp. hordei and most barley genotypes are resistant to P. striiformis f. sp. tritici. To determine the genetics of resistance in wheat to P. striiformis f. sp. hordei, crosses were made between wheat genotypes Lemhi (resistant to P. striiformis f. sp. hordei) and PI 478214 (susceptible to P. striiformis f. sp. hordei). The greenhouse seedling test of 150 F(2) progeny from the Lemhi x PI 478214 cross, inoculated with race PSH-14 of P. striiformis f. sp. hordei, indicated that Lemhi has a dominant resistance gene. The single dominant gene was confirmed by testing seedlings of the F(1), BC(1) to the two parents, and 150 F(3) lines from the F(2) plants with the same race. The tests of the F(1), BC(1), and F(3) progeny with race PSH-48 of P. striiformis f. sp. hordei and PST-21 of P. striiformis f. sp. tritici also showed a dominant gene for resistance to these races. Cosegregation analyses of the F(3) data from the tests with the two races of P. striiformis f. sp. hordei and one race of P. striiformis f. sp. tritici suggested that the same gene conferred the resistance to both races of P. striiformis f. sp. hordei, and this gene was different but closely linked to Yr21, a previously reported gene in Lemhi conferring resistance to race PST-21 of P. striiformis f. sp. tritici. A linkage group consisting of 11 resistance gene analog polymorphism (RGAP) markers was established for the genes. The gene was confirmed to be on chromosome 1B by amplification of a set of nullitetrasomic Chinese Spring lines with an RGAP marker linked in repulsion with the resistance allele. The genetic information obtained from this study is useful in understanding interactions between inappropriate hosts and pathogens. The gene identified in Lemhi for resistance to P. striiformis f. sp. hordei should provide resistance to barley stripe rust when introgressed into barley cultivars.     

Book reviews

Book reviews in this article
The Rust Fungi , edited by K. J. Scott and A. K. Chakravorty.
Mycoplasma Diseases of Trees and Shrubs , edited by Karl Maramorosch and S. P. Raychaudhuri.
Virology of Flowering Plants , by W. A. Stevers
Annual Review of Phytopathology, Volume
Diseases of Forest and Ornamental Trees , D. H. Phillips and D. A. Burdekin.     

Management of Cercospora leaf spot of groundnut (Arachis hypogaea L.) with a single fungicidal spray

Field trials were conducted during the rainy seasons of 1993/94 for chemical control of groundnut leaf spot using a single spray. A fungicide mixture ofcarbendazim 0.05%+mancozeb 0.2% was applied once in different treatments. Spray timings varied from 30 d.a.s. to 80 d.a.s. at 10-day intervals. Spray application reduced the percent disease index in all treatments. A statistically significant increase in pod yield was obtained in treatments sprayed up to 50 d.a.s. in 1993. The yield data were not significantly different in 1994. Sprays at 40 d.a.s. in 1993 and 50 d.a.s. in 1994 gave maximum returns. The cost of treatmentdid notvary significantly. The benefitto cost ratio oftreatments ranged from 1.1 to 8.1 in 1993 and 4.1 to 5.5 in 1994.     

甘蓝夜蛾赤眼蜂对几种重要农业害虫寄主卵的选择性

在室内采用选择性方法 ,研究了甘蓝夜蛾赤眼蜂G品系和F品系对我国几种重要农业害虫的寄主选择性。结果表明 ,G品系对亚洲玉米螟卵和麦蛾卵的选择性无明显差异 ;在对玉米螟卵的选择性上 ,G品系与玉米螟赤眼蜂的差异不明显 ,可作为防治亚洲玉米螟的候选蜂种。F品系对麦蛾卵的选择性强 ,已丧失对玉米螟卵的选择性。G和F品系以及螟黄赤眼蜂对棉铃虫卵的选择性较强 ,而对麦蛾卵的选择性较弱。在对棉铃虫卵的寄主选择性上 ,G和F品系同螟黄赤眼蜂无显著差异 ;但在寄生能力上 ,G和F品系均显著高于螟黄赤眼蜂 ,均可作为防治棉铃虫的候选蜂种。G和F品系以及广赤眼蜂对麦蛾卵的选择性较强 ,而对小菜蛾卵的选择性较弱。     

柠条种子小蜂在不同柠条寄主上的种群动态

2017年6月－7月, 系统调查了树锦鸡儿、甘蒙锦鸡儿、荒漠锦鸡儿和中间锦鸡儿4种植物上第一代柠条种子小蜂种群动态及寄主荚果发育进程。结果表明, 不同寄主植物上的柠条种子小蜂幼虫、蛹、成虫数量有显著性差异, 密度大小依次为: 树锦鸡儿＞中间锦鸡儿＞甘蒙锦鸡儿＞荒漠锦鸡儿。在发生时间动态上, 柠条种子小蜂幼虫、蛹和成虫的数量基本呈现先逐渐上升后下降的趋势, 4种寄主植物上不同虫态的柠条种子小蜂高峰期出现时间各不相同。甘蒙锦鸡儿上的小蜂出现最早, 6月17日幼虫达到高峰期; 中间锦鸡儿上的小蜂出现最晚, 7月2日幼虫高峰期, 7月14日成虫高峰期; 树锦鸡儿与荒漠锦鸡儿居中。柠条种子小蜂发育进程与锦鸡儿植物的荚果发育进程吻合。本文讨论了柠条种子小蜂种群动态与寄主植物的关系, 明确了柠条种子小蜂发生和达到高峰的时间, 为柠条种子小蜂预测预报和综合治理提供依据。     

Fourth International Congress of Pesticide Chemistry,Zurich, July 1978

Soybean Rust. By Kenneth R. Bromfield. American Phytopathological Society, Monograph no. 11, 1984, pp. 65. ISBN 0–89054–062–4. Price $10.50 (A.P.S. members $ 8.00).

Plant‐Microbe Interactions. Volume 1. Molecular and Genetic Perspectives. Edited by Tsune Kosuge and Eugene W. Nester. New York: Macmillan, 1984., ISBN 0–02–949470–2. Price $38.00.

Coffee Rust in the Americas. Edited by R. A. Fulton. American Phytopathological Society, Symposium Book No. 2, 1984, pp. 120. ISBN 0–89054–064–0. Price $18.00 (APS members $14).

Acarology VI, Volume 2. Edited by D. A. Griffiths and C. E. Bowman. Proceedings of the VI International Congress of Acarology held at Edinburgh University, Scotland, 5–11 September 1982, pp. 647–1296. Chichester: Ellis Horwood Limited. ISBN 0–85312–604–6. Price £49.50. (Distributed by John Wiley &; Sons Ltd.)

Index Phytosanitaire 1985: France, Afrique Méditer‐ranéenne et Tropicale. Association de Coordination Technique Agricole. Price 98 f (in France), 91 f (overseas, without tax).     

玉米穗粒腐病的病原菌鉴定及致病性测试

在陕西省25个县调查玉米穗粒腐病,采集病穗标样570份。霉坏籽粒达到果穗面积1/3以上的发病严重果穗占35.61％。分离得到1308个菌株,鉴定为17个种,分属14个属,其中串珠镰刀菌出现频率最高,占42.58％,其次为禾谷镰刀菌,占20.34％。对串珠镰刀菌、禾谷镰刀菌等10种主要病原菌进行致病性测试,平均病级1.14～2.41,病情指数22.9～48.4。串珠镰刀菌是玉米穗粒腐病的优势病原菌,禾谷镰刀菌为次优势菌种。