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Pakistan Sugar Journal, Volume 34, pp 11-14; doi:10.35380/sugar.034.01.0140
Sugarcane crop is highly vulnerable to attack by a complex of rodent pest species due to its long duration, providing excellent protective cover for field rats to feed and thrive throughout the year. Damage survey conducted at crop maturity stage (September-November) at Palejo Farm, Thatta revealed that BL-4 variety was heavily attacked due to its softness (10.40%) followed by BF-129 variety (8.63%) and least affected was Thatta-10 variety (6.62%). Rat damaged cane become further infested with other micro-organism and physical stress, resulting in reduction in weight and sugar recovery. Rodent control trials through application of PARC Rat bait formulations containing Zinc Phosphide (2%), Bromadiolone (0.005%) and Brodifacoum (0.005%) alongwith additive (Egg 3%) showed remarkable reduction in pest population. Brodifacoum mixed bait emerged as highly effective formulation showing 92.63% reduction in pest population followed by Bromadiolone bait (89.02%) and Zinc phosphide bait (83.54%). For effective management of field rodents, Integrated Pest Management (IPM) approach is recommended with combination of mechanical, chemical and habitat manipulation practice to enhance the crop yield through effective rat pest management.
Pakistan Sugar Journal, Volume 34, pp 04-10; doi:10.35380/sugar.034.01.0139
There are numerous well-documented phenomena that plague the efficient operation of bagasse boilers. Key Parameters that influence boiler combustion and operation are studied with the aid of combustion and flue gas analyzer. Combustion stability and efficiency is linked to various parameters such as fuel moisture and air temperatures supplied to the boiler and are investigated in this paper as part of a case study. The paper highlights number of modern developments that have been implemented at Shakarganj Limited, Jhang to optimize the existing boiler design to enhance the Boiler capacity from 65 tph to 80 tph. Along with that impact of various devices on performance improvement of boiler has been shown with experimental data for comprehensive evaluation of boiler operation and combustion efficiency. Results of suitable measures after installation of low cost retrofits to reduce losses including combustion instabilities, unburnt fuel, moisture in fuel and deposition of ash on tubes are also part of the paper.