ISSN:0030-7793    

DOI:10.1080/09670877009411712

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411713

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411714

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411715

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411716

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411717

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

ISSN:0030-7793    

DOI:10.1080/09670877009411718

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

A method is described whereby counts of fresh damage in oil palms are used to assess the levels of rat infestation. Census counts may be made in alternate rows or along every fourth row within a field, and it is suggested that control measures are instituted when the damage figure reaches five palms per acre. Good results have been achieved with baiting programmes, using either paper-wrapped or paraffin wax-based formulations.

ISSN:0030-7793    

DOI:10.1080/09670877009411719

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

Fungal rots induced principally byGloeosporium musarumandFusarium roseumare responsible for much deterioration in the quality of Jamaican bananas. Thiabendazole and benomyl at 200 and 300 ppm active ingredient respectively, gave good control when used as post-harvest dips; moderate control was obtained with Dithane M-45 and Maneb Z at 2000 ppm. Practical considerations in using these fungicides are discussed.

ISSN:0030-7793    

DOI:10.1080/09670877009411720

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor

摘要:

To obtain the potential range in disease development, a progressive increase in spore concentration of the imperfect state ofCochliobolus miyabeanuswas used on twelve rice varieties differing in their resistance to brown leaf spot. An analysis of the relative contributory effect of increase in lesion size and numbers on the percentage leaf area diseased was used as a basis to develop a quantitative scoring method in chart form for brown spot disease. The chart was aided by the provision of diagrams of the different categories in disease intensity. The usefulness of this disease scoring chart and its limitations are discussed. Other methods of assessment are proposed to overcome the limitations especially in respect of varietal resistance and seedling blights.

ISSN:0030-7793    

DOI:10.1080/09670877009411721

出版商:Taylor & Francis Group    

年代:1970

数据来源: Taylor