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1. The application of various chemicals to cuts made in the stem bases of Brachystegia spiciformis Benth., Julbernardia globiflora (Benth.) Troupin and Terminalia sericea Burch. ex DC.

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: W.R. Teague --- , Zimbabwe DianeM. Killilea --- , Zimbabwe

   Picloram‐potassium and various mixtures of picloram with 2,4‐D amine, 2,4,5‐T ester or amine, or 2,4,5‐T ester alone were injected into incisions made in the cambium of standing Brachystegia spiciformis and Julbernardia globiflora trees. Each arboricide was tested at a range...

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2. 

   The development of an expert system for arid rangeland management in central Namibia with emphasis on bush thickening

   Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: David Joubert --- Nature Conservation, Namibia Ibo Zimmermann --- Nature Conservation, Namibia Jens Fendler --- Nature Conservation, Namibia Heike Winschiers-Theophilus --- Nature Conservation, Namibia Friedrich P Graz --- Nature Conservation, Namibia Nico Smit --- Animal, Wildlife and Grassland Sciences, South Africa M Timm Hoffman --- Plant Conservation Unit, Botany Department, South Africa

   An online decision support system derived from research and expert knowledge was developed for arid rangeland management in central Namibia. The expert system emphasises the control of bush thickening and is divided into three forms of decisions: adaptive, reactive and...

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