Abstract
Soil moisture conditions created under drip irrigation have an important effect on crop growth and yield. This paper describes a trial that was carried out in Mauritius to determine the most appropriate combination of irrigation regime, dripline placement and row spacing for drip-irrigated sugar cane grown under local conditions. Measurements were made of cane growth and yield on fourteen treatments throughout three crop seasons (a plant cane crop and two ratoon crops). Detailed measurements were also made of the distribution of soil water potential on each of the fourteen treatments using two-dimensional arrays of tensiometers. These data were used to explain differences between treatments in both cane growth and yield. Periods of over and under-irrigation were identified. Recommendations are made for the design and management of drip schemes sited on similar soil types with similar climatic conditions.
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