Agroclimatic response mapping for sugarcane production in southern Africa.

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dc.contributor.advisor Schulze, Roland E.
dc.creator Hull, Phillip John. 2011-03-07T09:59:11Z 2011-03-07T09:59:11Z 2008 2008
dc.description Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2008. en_US
dc.description.abstract As is the case in many other regions in the world, sugarcane production in southern Africa is affected by a wide range of climatic conditions, which can vary considerably from location to location and from year to year. As a result, the season length and growth cycles of sugarcane in southern Africa differ greatly. Such conditions include the hot and dry regions of northern KwaZulu-Natal, Swaziland and Mpumalanga, where sugarcane is mostly irrigated, to the humid sub-tropical coastal belt extending from the far north coast of KwaZulu-Natal to areas in the Eastern Cape, as well as the cool frost prone midlands regions of KwaZulu-Natal. Owing to the wide range of climatic conditions in which sugarcane is grown in southern Africa, there are many different external factors that affect sugarcane production, including a range of pests and diseases, frost occurrences and variations in soil water. The objective of this research was to (1) identify a number of important variables that affect cane production in southern Africa, (2) employ suitable models to reflect these variables, and (3) simulate and map the extent and severity of these variables at a high spatial resolution over southern Africa. Such variables include the Eldana saccharina and Chilo sacchariphagus stalk borers, sugarcane rust fungus, heat units with selected base temperatures, frost, soil water content, soil compaction, irrigation water demand, conducive and non-conducive growing conditions, flowering proficiencies for sugarcane, sugarcane yields and yield increments per unit of irrigation. The distribution patterns of the above-mentioned variables relied greatly upon the various models employed to represent them, as well as the accuracy of the temperature and rainfall databases to which the various models were applied. Although not definitive, the models used to reflect the variables which had been identified were considered to be generally satisfactory. The resolution at which the variables which had been identified in this study were mapped, was also found to be adequate. en_US
dc.language.iso en en_US
dc.subject Sugarcane--Research--South Africa. en_US
dc.subject Sugarcane--Yields--Africa, Southern. en_US
dc.subject Sugarcane--Water requirements--Africa, Southern. en_US
dc.subject Sugarcane--Diseases and pests--Africa, Southern. en_US
dc.subject Sugarcane borer--Africa, Southern. en_US
dc.subject Sugarcane--Frost damage--Africa, Southern. en_US
dc.subject Sugarcane--Soils--Africa, Southern. en_US
dc.subject Sugarcane--Climatic factors--Africa, Southern. en_US
dc.subject Theses--Bioresources engineering and environmental hydrology. en_US
dc.title Agroclimatic response mapping for sugarcane production in southern Africa. en_US
dc.type Thesis en_US

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