|Author:||Olivier, F. ; Singels, A.|
|Book Group Author:||NA|
To meet the challenge of a limited and costly water supply, South African sugarcane growers will have to find ways of increasing the efficiency of irrigation to maintain high cane and sucrose yields. The term water use efficiency (WUE) is generally used as a measure of the overall effectiveness of water (either rainfall or irrigation, or both) for crop production. WUE can be defined as cane yield per unit of crop water use (evapotranspiration). Irrigation water use efficiency (IWUE) is another term commonly associated with WUE, and can be defined as the cane yield response per unit of irrigation water applied. More efficient irrigation systems, accurate irrigation scheduling and agronomic practices such as mulching, variety choice and row spacing are potential means of increasing water use efficiency. WUE and IWUE values are required for water resource planning and for the assessment of irrigation management practices. Improved water use efficiency would also reduce negative environmental impacts by reducing runoff, erosion, drainage and leaching of agricultural chemicals. The objective of this study was to determine the WUE and IWUE of surface drip irrigated sugarcane as influenced by the amount of irrigation applied, the variety planted and the row spacing arrangement. The information obtained will be used to develop irrigation recommendations, as well as to test crop models. Preliminary results are reported here.
|Pages:||347 - 351|
|Journal:||Proceedings of the Annual Congress - South African SugarTechnologists' Association|
crop yield, evapotranspiration, irrigated conditions,irrigated farming, irrigation water, plant water relations, row spacing,sucrose, sugar content, sugar yield, sugarcane, surface irrigation,trickle irrigation, varieties, water deficit, water use efficiency,Saccharum, Saccharum officinarum, Poaceae, Cyperales, monocotyledons,angiosperms, Spermatophyta, plants, eukaryotes, Saccharum, saccharose,Field Crops (FF005) (New March 2000), Plant Physiology and Biochemistry(FF060), Plant Water Relations (FF062), Plant Production (FF100), SoilWater Management (Irrigation and Drainage) (JJ800) (Revised June 2002)[formerly Soil Water Management]