Farming systems and production management

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Improving the yields of ratoon crops of sugarcane : SRDC Final report BS7S
(SRDC, 1992) Chapman, LS; Ferraris, R; Ludlow, MM; Hurney, AP
The economics of sugarcane growing improve with the number of ratoon crops which can be grown from a single planting. In Australia, declining yields with increase in the number of ratoons limit a cycle to three to five ratoons, according to district. However, studies by BSES indicate that the most economic strategies involved growing up to six ratoons. If this decline in yield could be reduced, then more ratoons could be obtained from a single planting with the associated economic benefits.
Influence of harvester basecutters on ratooning of sugarcane : SRDC Final report BSS123
(2005) Hurney, AP; Croft, BJ; Grace, D; Richards, DR
Current single row mechanical sugarcane harvesters use twin rotary basecutters with multiple blades to produce an impact cut in the stalk at or near ground level. However, the cane stubble is often damaged during harvesting, which is considered to be caused by the basecutter. Many instances of poor ratooning have been attributed to either basecutter damage increasing the risk of infection by stalk diseases, or due to a reduction in the number of viable buds. While this matter was discussed regularly, there were no data that quantified the level of damage occurring in the field or the relationship between stubble damage and ratooning. In addition, if stubble damage was affecting ratooning, harvesting and cultural practices contributing to stubble damage need to be identified. This was addressed in this project by conducting surveys in harvested fields in the Tully, Burdekin and Mackay districts to assess the level of damage that occurred during harvest.
evelopment of a strategy for selection of high-CCS cultivars for high-fertility environments in northern Queensland : SRDC Final report BSS179
(2004) Berding, N; Hurney, AP; Swain, RS
The need to develop a strategy for cultivar development for high-fertility soils present in northern Queensland was driven by industry concerns regarding a declining CCS pattern in years prior to commencement of this project. The strategy embodied in this project was to grow three populations of clones of commercial yield and CCS potential under these conditions, as typified by Innisfail and Tully series soils, and determine whether above-ground traits could act as predictors of crop erectness at harvest.
Farm assessment of productivity limits in the wet tropics : SRDC Final report BSS159
(2000) Hurney, AP; Bown, PA
There is an ongoing concern in the wet tropics over productivity levels, particularly with regard to low CCS. Previously, productivity trends within the region have been assessed utilising mill area statistics (Smith, 1991; Hurney, 1995; Leslie and Wilson, 1996). These studies indicate there has been a negative trend for CCS over the last 30 years in the wet tropics. Consequently, sugar yields have remained relatively static during the same period despite an increase in cane yield and, therefore, economic viability has been adversely affected.While mill area statistics can be of value in assessing broad issues, they suffer from the disadvantage that problem definition may be limited because causal factors can be confounded. This project has assessed productivity trends at the farm and district level rather than mill level. It was considered that assessment of production functions at this level rather than the mill level may provide a clearer understanding of factors influencing productivity, particularly CCS trends. The concept was to focus on high performance farms to determine if there were exceptions to general productivity trends. If exceptions could be identified, detailed evaluation of this group might assist in a better definition of the problem, diagnosis of causes and may even identify some solutions to factors influencing productivity.
Improving the yields of ratoon crops of sugarcane : SRDC Final report BS7S (AMENDED)
(1993) Chapman, LS; Ferraris, R; Ludlow, MM; Hurney, AP
The economics of sugarcane growing improve with the number of ratoon crops which can be grown from a single planting. In Australia, declining yields with increase in the number of ratoons limit a cycle to three to five ratoons, according to district. However, studies by BSES indicate that the most economic strategies involved growing up to six ratoons. If this decline in yield could be reduced, then more ratoons could be obtained from a single planting with the associated economic benefits.

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