Abstract
Maize is the Third largest cereal produced in the world with a trend of rising production in India. The normal area for maize in India was 77.27 lakh hectares with production about 150.91 lakh tonnes in the year 2007. Rajasthan has the largest area 10.62 lakh hectares under cultivation among all states with total production of 21 lakh tones. Four method of maize shelling namely shelling cob grain by hand, octagonal maize sheller, hand operated maize sheller and beating by stick method were carried for removing maize kernel from the cob. For ergonomical evaluation Ten male agricultural subjects of 25-35 yr age group were randomly selected for the study.The mean OCR, ΔOCR, HR and ΔHR for octagonal maize sheller was lowest among all method of maize shelling and highest for beating by stick method. The energy expenditure rate was highest for beating by stick method (3.84 kcal/min) and lowest for octagonal maize sheller (1.52 kcal/min). Energy expenditure rate for shelling cob grain by hand and octagonal maize shelling operation could be scaled in “Very light” category of work load. Whereas the hand operated maize sheller and beating by stick method could be scaled as in “Light” category of work load.
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