+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Control of bark canker in cocoa with metalaxyl

Control of bark canker in cocoa with metalaxyl

Tropical Pest Management 28(1): 45-48

Some previous treatments for Phytophthora bark canker of cocoa, in Papua New Guinea and elsewhere, are summarized and the new systemic fungicide metalaxyl, other non-systemic fungicides and removal of outer bark by scraping are compared. Details are given of inoculation and reisolation techniques which gave rapid and reliable results for the study of cocoa canker. Metalaxyl was much superior to the other treatments under the conditions of these experiments and 0.25% a.i. [active ingredient] metalaxyl effectively controlled P. palmivora in artifically induced cankers. Bark cankers very often start around bark damage made by the larvae of woodboring insects and 0.25% a.i. metalaxyl added to an aqueous dichlorvos/white oil mixture used to control these insects was also effective in eliminating the fungus. Scraping followed by natural desiccation, which effectively controls canker in Western Malaysia, would not be reliable under the wetter climatic conditions in Papua New Guinea.

(PDF emailed within 0-6 h: $19.90)

Accession: 000847484

Download citation: RISBibTeXText

DOI: 10.1080/09670878209370673

Related references

Comparison of metalaxyl cuprous oxide sprays and potassium phosphonate as sprays and trunk injections for control of phytophthora palmivora pod rot and canker of cocoa. Crop Protection 11(2): 141-147, 1992

Phytophthora bark canker of cocoa in Papua New Guinea. Actes Douala Cameroun 4-12 Nov 1979 7 Conference internationale sur la recherche cacaoyere = Proceedings Douala Cameroun 4-12 Nov 1979 7 International Cocoa Research Conference: 275, 1981

Association of Phytophthora palmivora bark canker and insect damage in cocoa in Papua New Guinea. Annals of Applied Biology, 971: 27-30, 1981

Factors affecting the susceptibility of six cocoa clones to Phytophthora palmivora (Butl.) Butler bark canker in Trinidad. Plant Pathology 45(1): 84-91, 1996

The relation of bark moisture to the development of canker diseases caused by native, faculatative parasites. VII. Some effects of the sapropytes on the bark of Poplar and Willow on the incidence of Hypoxylon canker. Canad. J. Bot, 40: 1, 61-9, 1962

The relation of bark moisture to the development of canker diseases caused by native, facultative parasites VII Some effects of the saprophytes on the bark of poplar and willow on the incidence of Hypoxylon canker. Canadian Journal of Botany 40(1): 61-69, 1962

Control of phytophthora root and crown rot and trunk canker in walnut with metalaxyl and fosetyl al. Plant Disease 69(12): 1042-1043, 1985

Contribution to the development of the chemical control of cocoa black pod disease in togo studies on the possibilities of using metalaxyl. Cafe Cacao The 28(3): 191-203, 1984

Comparison of cuprous oxide and metalaxyl with mixtures of these fungicides for the control of phytophthora pod rot of cocoa theobroma cacao. Plant Pathology 33(1): 81-88, 1984

The relation of bark moisture to the development of canker diseases caused by native, facultative parasites. 2. Fusarium canker on Black Cotton-wood. 3. Cephalosporium canker on Western Hemlock. Canad. J. Bot, 37: 5, 781-788, 1959

The control of bark rot and canker. Advisory Circ Rubber Research Scheme Ceylon 21-[1-4 ], 1944

The control of chestnut bark canker. Humus. 7: 3, 9-13. bibl. 8, 1951

Fungicides for control of stem canker of cocoa caused by Phytophthora palmivora Butler. Cocoa pest and disease management in Southeast Asia and Australasia: 153-155, 1992

The development of Phytophthora canker on different cocoa genotypes infected and uninfected with cocoa swollen shoot virus. Tropical Science 45(1): 50-53, 2005

Chestnut bark canker control in Italy. Schweiz. Z. Forstw, 102: 11, 572-579, 1951