The purpose of this paper is to review published literature on climate change and food security i... more The purpose of this paper is to review published literature on climate change and food security in Tanzania and to identify existing knowledge gaps. An in-depth analysis of published literature and existing knowledge about climate change and food security at national, regional and international levels has been done, focusing on the East Africa region in general and Tanzania in particular. The main focus was to carry out a comprehensive review of published literature covering the past twenty years that addresses climate change effects on various components of the food system including production, access and availability, nutrition, and marketing. Emphasis has been given to climate change impacts, mitigations, and adaptations in crop production, and how they affect the major components of food security.
Propagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigat... more Propagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigated at Sao Hill, Tanzania, aiming at providing an alternative propagation technique to the use of seeds or cuttings that germinate or root poorly. Air layers were initiated on the young shoots (1 – 2 years old) of mature O. lanceolata trees growing at Sao Hill catchment Forest. After root initiation, which took 8 weeks, they were detached from the parents, potted in polyethylene tubes and reared at the nursery for a further three months. The factors assessed in this experiment were the effect of time at which air layers were initiated (i.e. February, June, September and December); and the influence of IBA as rooting promoter at three concentrations (50, 100 and 150 ppm). From the data collected it was observed that rooting success of up to 80% can be achieved from air layers, making this propagation technique a viable alternative to seedlings or cutting propagation. Rooting success was in...
The purpose of this paper is to review published literature on climate change and food security i... more The purpose of this paper is to review published literature on climate change and food security in Tanzania and to identify existing knowledge gaps. An in-depth analysis of published literature and existing knowledge about climate change and food security at national, regional and international levels has been done, focusing on the East Africa region in general and Tanzania in particular. The main focus was to carry out a comprehensive review of published literature covering the past twenty years that addresses climate change effects on various components of the food system including production, access and availability, nutrition, and marketing. Emphasis has been given to climate change impacts, mitigations, and adaptations in crop production, and how they affect the major components of food security.
Propagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigat... more Propagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigated at Sao Hill, Tanzania, aiming at providing an alternative propagation technique to the use of seeds or cuttings that germinate or root poorly. Air layers were initiated on the young shoots (1 – 2 years old) of mature O. lanceolata trees growing at Sao Hill catchment Forest. After root initiation, which took 8 weeks, they were detached from the parents, potted in polyethylene tubes and reared at the nursery for a further three months. The factors assessed in this experiment were the effect of time at which air layers were initiated (i.e. February, June, September and December); and the influence of IBA as rooting promoter at three concentrations (50, 100 and 150 ppm). From the data collected it was observed that rooting success of up to 80% can be achieved from air layers, making this propagation technique a viable alternative to seedlings or cutting propagation. Rooting success was in...
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