Completed projects and reports

Now showing 1 - 5 of 5

Pathways to exploiting enhanced photosynthetic efficiency for higher sucrose and biomass yield
(2011) Inman-Bamber, NG
Australia has one of the highest commercial cane sugar (CCS) levels in the world but unfortunately CCS appears to have plateaud at about 14% of fresh cane weight over the past 20 years. Up to now in breeding programs, increased fibre has been considered to have negative economic impacts because of adverse effects on sugar extraction and milling rate. It is possible that high fibre genotypes can produce higher biomass yields than high sucrose types because high sucrose content in the stalk may feedback negatively on photosynthesis either through end-product suppression or through sugar signalling compounds. This is now an assumption which is gaining acceptance through recent publications. Prior to this project this assumption had not been tested using high fibre and high sucrose clones. Feedback inhibition is also suspected to be the cause of the ‘reduced growth phenomenon’, a term applied to lower than expected biomass accumulation after a certain stage in crop development. This project aimed to establish the role of cane stalk sucrose in feedback inhibition of photosynthesis in order to reveal existing limitations to increasing sucrose content and biomass yield.
Cane fibre yields : final report PR04011
(BSES, 2004) McGuire, PJ
This report was prepared for the New South Wales sugar industry to provide an estimate of the additional cane-based fuel available for the proposed cogeneration project. It summarises the work done to date in NSW, as well as drawing on research conducted in the Mackay, Bundaberg and Tully canegrowing districts. Studies conducted as part of the Brazilian sugar industy's Biomass Power Generation project are also reported.
Fibre characteristics of cane - results of measurements carried out at Bundaberg during 1986 season
(BSES, 1986) Noble, AG
During September, 1986 the decision was made to test for extreme fibre characteristics all cane varieties which are prospective Q canes, in the last season before release. The purpose of these tests was to obtain some indication which varieties were likely to cause handling problems during the milling process.
Fibre characteristics of cane - results of measurements carried out at Bundaberg during 1987 season
(BSES, 1987) Noble, AG
During September, 1987 a total of twenty-three samples of cane were tested for extreme fibre characteristics at BSES in Bundaberg. The main purpose of this testing program, which was introduced during 1986 season, is to screen all prospective Q canes prior to their release to obtain some indication which varieties are likely to cause handling problems during the milling process.
Biomass accumulation in sugarcane : final report 79/9028
(1984) Kingston, G; Ham, GJ; Ridge, DR; Leverington, KC
Growth analysis experiments were conducted at Ayr and Bundaberg from 1979 to 1982 to study biomass accumulation in plant and ratoon crops of sugarcane. Crops were planted and ratooned in March, June, September and December, and harvested at 6, 9, 12 and 15 months of age. Data were acquired for yields of total fresh and dry matter, in addition to yields of the following vegetative components: dry leaf, green leaf, tops and stalks. Fibre analyses were determined on all components, while glucose, fructose and sucrose % were also determined in the latter three components. It was shown that yield of total dry matter increased with age at harvest for all months of crop initiation. Potential for dry matter accumulation was closely associated with intercepted solar radiation. Growth for three months was ranked December-March > March-June > September-December > June-September. These rankings represented the interaction of crop growth stage with solar radition. The proportion of total dry matter allocated to soluble and structural carbohydrate was shown to be dependent on variety as well as an interaction between age at harvest and month of harvest. Canes older than nine months of age, harvested between June and December, had established a plateau type equilibrium between the proportion of total dry matter in soluble and structural carbohydrate. Good prospects existed for forward extension of the crushing season to March for ethanol production based on 15 month old cane. Models were developed to describe the growth of yield components of the biomass in relation to intercepted solar radition, month of crop initiation, age at harvest and crop class.

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