Vol. 12 No. 2 (1987): Harvest

Articles

• Biological control of water hyacinth: early observations

  S. Laup

  35-40

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• Biological control of water lettuce: early observations

  S. Laup

  41-43

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• Sending leaf samples for plant nutrient analysis to the Chemistry Section laboratory

  Simon George

  44-48

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• Tissue culture: an introduction to a useful technique in root crop research in Papua New Guinea

  Malcolm P. Levett

  49-53

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• Extension and training in the sheep industry in Papua New Guinea

  W. Hogg

  54-58

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• Forest insect pests of Papua New Guinea - 1: under-bark borers of kamarere and Terminalia - Agrilus beetles

  Hywel Roberts

  59-64

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• Recommendations for the control of coffee leaf rust on Arabica coffee in Papua New Guinea

  Anon

  65-70

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