Suspension of irrigation during the maturation phase of sugarcane (Saccharum spp.) cultivation

Objective: To evaluate if there is an increase in the concentration of sugars in sugarcane grinding stalks as a result of controlled water stress. Design/Methodology/Approach: An experimental plot on cultivar MEX 69-290 was established in 2nd ratoon cycle, on a mollic Gleysol soil in the supply area of ​the​ Pujiltic sugar mill. Five treatments in irrigation suspension were established: T1 = 15 days; T2 = 30 days; T3 = 45 days; T4 = 60 days, and T5 = 75 days of suspension. The treatments were distributed in the field in a gradient plot design, following the slope of the land, with four repetitions within each irrigation strip. Results: The results show that suspending irrigation between 45 and 60 days before harvest increases the quality of the juices as well as the yields of the grinding stalks. In addition, natural precipitation plus irrigation water do not satisfy the water needs of the crop in the area under the scheme followed by the farmers. Study Limitations/Implications: Irrigation rotation. Findings/Conclusions: The authors recommend providing the necessary amount of auxiliary irrigation to satisfy the water demand of the crop during the growth cycle but suspending irrigation at the beginning of the ripening and maturity stage.

Characterisation of pH variations along the Ba River in Fiji utilising the GEF R2R framework during the 2019 sugarcane season

Within Pacific Small Island Developing States (Pacific SIDS), the ridge-to-reef (R2R) approach has emerged as a framework for monitoring river connectivity between terrestrial and marine ecosystems. The study measured water quality, including pH, over 88.40 km of the Ba River in Fiji. The sampling design focused on measuring spatio-temporal variability in pH throughout the sugarcane season with three rapid sampling periods (RSP1, 2 & 3) along the Ba River, together with continuous measurement of temperature and pH using stationary data loggers at two locations upstream and downstream of the sugar mill. Spatial variability in pH and water quality was characterised before (RSP1 and RSP2) and during (RSP3) the sugarcane season. Mean pH measured before the sugarcane crushing season for RSP1 and RSP2 were 8.16 (± 0.49) and 8.20 (± 0.61) respectively. During the sugarcane crushing season (RSP3), mean pH declined by 3.06 units to 6.94 within 42 m downstream of the sugar mill (P ≤ 0.001). The 3.06 unit decline in pH for RSP3 exceeded both the mean diurnal variation in pH of 0.39 and mean seasonal variation in pH of 2.01. This decline in pH could be a potential source of acidification to downstream coastal ecosystems with implications for coral reefs, biodiversity and fishery livelihoods.

The Impact of Trade Liberalisation on Decent Work: The Case of the Philippine Sugar Mill Workers

<p>The impact of trade liberalisation on the structure and nature of work is a divisive topic. On the one hand, there are those who support trade liberalisation by pointing to the potential employment generation (Kelly & Prokhovnik, 2004) and the upward pressure on workers’ skills levels (Mander & Goldsmith, 1996). In contrast, there are those who remain critical and argue that trade liberalisation results in job losses, downward pressure on working conditions and limited opportunity for unskilled workers (Solidar, 2007c; 2007e). Impacts that indicate an improvement in decent work are often framed as ‘social upgrading’ while any deterioration in decent work is seen to result in ‘social downgrading’. Research in this field, while growing, tends to assess the impact of trade liberalisation from a national, sectoral or organisational perspective, while little is known of the workers’ perspective. Adopting a worker perspective, this thesis examines the impact of trade liberalisation on decent work among sugar mill workers in the Philippines. Using a qualitative single case study method, the study draws on the changes in employment and work conditions in a sugar mill when liberal trade policies were introduced. The study uses both primary and secondary data. Primary data were taken from representatives of the workers, the employer and the government sector at national and workplace levels. The study highlights the trade-offs between indicators of decent work and finds that decent work can be influenced by institutional frameworks in addition to employment strategies. Trade liberalisation resulted in numerical flexibility where permanent workers were reduced while contractual workers were hired as cost reduction measures and a way of avoiding labour laws that are protective of permanent workers. A shift of employment demand toward semi-skilled or skilled workers was also found. Thus, this research directs the attention of future research on trade liberalisation and decent work towards more vulnerable workers such as contractual workers. Furthermore, it highlights the need to increase the coverage of legislative protection to include non-permanent workers. Lastly, it challenges the Philippine government to increase the skill level of its workforce to facilitate employment generation.</p>

The Impact of Trade Liberalisation on Decent Work: The Case of the Philippine Sugar Mill Workers

<p>The impact of trade liberalisation on the structure and nature of work is a divisive topic. On the one hand, there are those who support trade liberalisation by pointing to the potential employment generation (Kelly & Prokhovnik, 2004) and the upward pressure on workers’ skills levels (Mander & Goldsmith, 1996). In contrast, there are those who remain critical and argue that trade liberalisation results in job losses, downward pressure on working conditions and limited opportunity for unskilled workers (Solidar, 2007c; 2007e). Impacts that indicate an improvement in decent work are often framed as ‘social upgrading’ while any deterioration in decent work is seen to result in ‘social downgrading’. Research in this field, while growing, tends to assess the impact of trade liberalisation from a national, sectoral or organisational perspective, while little is known of the workers’ perspective. Adopting a worker perspective, this thesis examines the impact of trade liberalisation on decent work among sugar mill workers in the Philippines. Using a qualitative single case study method, the study draws on the changes in employment and work conditions in a sugar mill when liberal trade policies were introduced. The study uses both primary and secondary data. Primary data were taken from representatives of the workers, the employer and the government sector at national and workplace levels. The study highlights the trade-offs between indicators of decent work and finds that decent work can be influenced by institutional frameworks in addition to employment strategies. Trade liberalisation resulted in numerical flexibility where permanent workers were reduced while contractual workers were hired as cost reduction measures and a way of avoiding labour laws that are protective of permanent workers. A shift of employment demand toward semi-skilled or skilled workers was also found. Thus, this research directs the attention of future research on trade liberalisation and decent work towards more vulnerable workers such as contractual workers. Furthermore, it highlights the need to increase the coverage of legislative protection to include non-permanent workers. Lastly, it challenges the Philippine government to increase the skill level of its workforce to facilitate employment generation.</p>

Titanium Alloy is Best Material for Roller Shaft in Sugar Mill

In sugar industry, the sugar processing done in different sections, but to increase total crushing per day (TCD) capacity, the milling section takes a vital role in the sugar industry. The sugar industry aims to extract the maximum amount of juice from sugarcane. In the milling section, the processed sugarcane is fed in between the three-roller shaft from the different arrangements, there are different loads applied on each part roller shafts. When load between all rollers varies then there is a chance of bending it is analyzed to check the roller shaft condition. The modeling is done on roller shaft with the help of CATIA V5. After modeling, we analyze the condition of the rollers, when different stress or forces are applied to different sections of the roller shaft it analyzed with the help of Finite element method using ANSYS WORKBENCH software. We were selecting titanium alloy materials for the roller shaft to analyze the variation in results. When comparing the calculated and software-based results using Maximum Shear stress and Total deformation for top, feed, and discharge rollers said the roller shafts are safe to use in the sugar industry and titanium alloy is the best material for these roller shafts.

Structural Characterisation and Assessment of the Novel Bacillus amyloliquefaciens RK3 Exopolysaccharide on the Improvement of Cognitive Function in Alzheimer’s Disease Mice

In this study Bacillus amyloliquefaciens RK3 was isolated from a sugar mill effluent-contaminated soil and utilised to generate a potential polysaccharide with anti-Alzheimer’s activity. Traditional and molecular methods were used to validate the strain. The polysaccharide produced by B. amyloliquefaciens RK3 was purified, and the yield was estimated to be 10.35 gL−1. Following purification, the polysaccharide was structurally and chemically analysed. The structural analysis revealed the polysaccharide consists of α-d-mannopyranose (α-d-Manp) and β-d-galactopyranose (β-d-Galp) monosaccharide units connected through glycosidic linkages (i.e, β-d-Galp(1→6)β-d-Galp (1→6)β-d-Galp(1→2)β-d-Galp(1→2)[β-d-Galp(1→6)]β-d-Galp(1→2)α-d-Manp(1→6)α-d-Manp (1→6)α-d-Manp(1→6)α-d-Manp(1→6)α-d-Manp). The scanning electron microscopy and energy-dispersive X-ray spectroscopy imaging of polysaccharides emphasise their compactness and branching in the usual tubular heteropolysaccharide structure. The purified exopolysaccharide significantly impacted the plaques formed by the amyloid proteins during Alzheimer’s disease. Further, the results also highlighted the potential applicability of exopolysaccharide in various industrial and pharmaceutical applications.