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Meena, S. S.
- Effect of WBGT on Body Thermal Responses for Agricultural Workers in Southern Rajasthan, India
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Authors
Affiliations
1 Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), IN
1 Department of Agricultural Engineering (Farm Machinery and Power Engineering), College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan), IN
Source
International Journal of Agricultural Engineering, Vol 10, No 1 (2017), Pagination: 55-59Abstract
Rajasthan state is in west region of India. Maximum temperatures rise sharply exceeding 45° C by the end of May and early June resulting in harsh summers in the state. Heat stress is a condition that is caused by worker over-exposure to the high temperature work environments often found in outdoor agriculture operations. Wet Bulb Globe Temperature (WBGT) is a measure of heat stress. Considering the range of temperatures prevalent in the Rajasthan state during the months of May and June, agricultural operations during these months and the associated heat stress on the agricultural workers, this study was designed to ascertain the effect of WBGT on body thermal responses of agricultural workers. Southern Rajasthan was selected to conduct this study. The study was conducted on 12 farm workers. Different WBGT of 28°C, 29°C, 30°C, 31°C and 32°C were selected for this study. Thermal parameters included head, forehead and oral temperature. Forehead temperature was observed to decrease with an increase in WBGT. Heavy sweating was observed at high WBGT and this resulted in the decrease in skin and forehead temperature. Oral and head temperature was observed to increase with increase in WBGT. Since oral temperature is also considered to be the core temperature of body, it increased with increase in WBGT. Head absorbs the direct solar radiations and hence, its temperature increased with increase in WBGT.Keywords
WBG (Wet Bulb Globe Temperature), Heat Stress, Thermal Responses, Head Temperature, Forehead Temperature, Oral Temperature, Core Body Temperature.
References
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- www.imd.gov.in
- Development of Portable Knapsack Power Weeder
Abstract Views :217 |
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Authors
Affiliations
1 Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
2 Department of Mechanical Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
1 Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
2 Department of Mechanical Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
Source
International Journal of Agricultural Engineering, Vol 11, No 1 (2018), Pagination: 35-40Abstract
Weed management is an ever-present challenge to crop production. Presence of weeds in general reduces crop yield by 31.5 per cent (22.7 % in Rabi season and 36.5 per cent in Kharif and summer season). Yield losses due to weeds were about 65 per cent depending on the crop, degree of weed infestation, weed species and management practices. Presently available weeder mostly run by tractor or power tiller, these are large in size, cannot work for low inter row spaced crops.To over come these problems, portable knapsack power weeder was developed for low inter row spaced crops with width of cut was 25 cm. The main working components of power weeder were flexible drive shaft, worm gear box, rotor shaft, flanges and blades. The” L” type blade was selected having length, width and thickness of 130 mm, 30 mm and 5 mm, respectively, operating with a rotor shaft of 20 mm in diameter. Maize and chilli was tested with number of blades per flange (2, 4 and 6).Keywords
Engine, Flexible Drive Shaft, Worm Gear Box, Rotor Shaft, Flanges, Blades.References
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- Performance Evaluation of Portable Knapsack Power Weeder
Abstract Views :202 |
PDF Views:0
Authors
Affiliations
1 Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
1 Department of Farm Machinery and Power Engineering, College of Technology and Engineering, Udaipur (Rajasthan), IN
Source
International Journal of Agricultural Engineering, Vol 11, No 2 (2018), Pagination: 364-368Abstract
India is a vast country having agriculture sector as the backbone of its economy. A weed is essentially any plant which grows where it is unwanted or not required. A weed can be thought of as any plant growing in the wrong place at the wrong time and doing more harm to the farmer income. Several weeders are available which run by tractor or power tiller, these are large in size can not work for low inter row spaced crops. The portable knapsack power weeder is evaluated two different crops such as maize and chilliwith each blade (2, 4 and 6 blades per flange) combination. During the evaluation field capacity, field efficiency, weeding efficiency, plant damage, fuel consumption, performance index were evaluated. Actual field capacity of weeder for maize and chillicrop with 6 blades was 0.023 ha/hand 0.025 ha/h. Field efficiency of weeder for maize and chilli crop was 61.3 per cent and 66. 6.Weeding efficiency for maize and chilli crop was 89.3 per cent and 85.2 per cent. Plant damage for maize and chillicrop was 2.4 per cent and 3.30 per cent.Keywords
Knapsack Power Weeder, Field Capacity, Field Efficiency, Weeding Efficiency, Plant Damage, Fuel Consumption, Performance Index.References
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