ISSN:0030-7793    

DOI:10.1080/04345546909415311

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/04345546909415312

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

An outstanding property of the bipyridylium herbicides is the rapidity with which they are inactivated in contact with soils. The initial inactivation is attributable to strong adsorption on soil colloids and, as may be expected, is governed by the nature of the soil. Subsequent degradation may be induced by ultraviolet radiation or, below the soil surface, by the activity of the microflora. The agronomic significance of these mechanisms is described by reference to recent work on paraquat.

ISSN:0030-7793    

DOI:10.1080/04345546909415313

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

This paper outlines the occurrence and significance of fungi in stored products and some methods for their isolation.

ISSN:0030-7793    

DOI:10.1080/04345546909415314

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

Red rot is a very serious disease of sugarcane. It was first described by Went in 1893 (56). Since then it has been found to cause epiphytotics in different countries. The surest symptom of the disease is the reddening of the internal internodal tissues with crossbars of white patches in the reddened area. This red colour is caused by a dye which is secreted by the host and is antagonistic to the red rot fungus. Infection takes place through mother setts, holes in the nodal regions, the cut ends of the seed canes and other injuries. The disease causes damage to the sugarcane drop mainly by reducing the crop stands and by reducing the sucrose content of the cane juice. Methods of chemical control are mentioned, although the importance of good husbandry is stressed. Use of resistant varieties of sugarcane is recommended.

ISSN:0030-7793    

DOI:10.1080/04345546909415315

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/04345546909415316

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/04345546909415317

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

The development of resistance to insecticides and the hazards inherent in their use present ever-increasing problems in insect control today. The difficulties and dangers have given impetus to research on other means of combating pests. Australia has always been prominent in the field of biological control, and the CSIRO Division of Entomology is an important centre, keenly seeking controls for both insects and weeds. Progress in the search for and establishment of parasites ofSirex, the pine pest, was described inRural Research 64. This article reviews six other projects of particular interest, namely those involving potato moth, buffalo fly, white wax scale, green vegetable bug, lantana, and skeleton-weed.

ISSN:0030-7793    

DOI:10.1080/04345546909415318

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/04345546909415319

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

To develop an auto-sterilising device for the red bollwormDiparopsis castanea(Hmps.) a prototype bait-station was used in the laboratory with virgin females as bait which consistently attracted male moths of various ages. The female moths were attractive for at least 8 days. Males sterilised by overnight contact on filter-paper saturated with 0.2% aq. tepa were as responsive to the virgin females as untreated males.

ISSN:0030-7793    

DOI:10.1080/04345546909415320

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor