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1991 - 19942
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Author: KAU × Author: Mathew, John × End date: 1996 × Start date: 1991 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Design development and evaluation of a low cost paddy thresher
    (Department of Farm Power Machinery and Energy, Kelappaji College of Agricultural Engineering and Technology, Tavanur, 1991) Mathew, John; KAU; Sankaranarayanan, M R
    Though several high capacity threshers are available in the country for different crops, no thresher is found suitable for small and marginal rice farmers. Hence a low cost portable paddy thresher was developed and tested. The power operated machine consists of base, side frames, front grain shield and wire-loop cylinder. The power from the 0.5 hp motor is transmitted to the cylinder shaft by belt and pully arrangement. The optimum cylinder speed is 400 rpm. The capacity of the thresher at 14.26 per cent moisture content is 451.84 kg paddy per hour and threshing efficiency is 95.08 per cent. The mechanical damage of the grain is negligible. Two labourers are required for the whole operation. The size of the thresher is 635 x 500 x 715 mm having a gross weight of 47 kg. The cost of the thresher was worked out to be around Rs. 3600 and the cost of operation for threshing paddy was Rs. 3.00 per quintal. The unit can be fabricated by local artisans from the readily available materials and can successfully be maintained by small and marginal farmers.
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    ThesisItemOpen Access
    Performance of clone R R II 105 in Kuttanaad taluk of Alleppey district
    (Department of Plantation Crops and Spices, College of Horticulture, Vellanikkara, 1994) Mathew John; KAU; Prasannakumari Amma, S
    An attempt was made to assess the performance of clone RRII 105 in Kuttanad taluk. Data were collected through personal contacts and interview with the help of a pretested interview schedule. For the study, all the units in Kuttanad were selected. The results revealed that garden lands were suitable for rubber cultivation because of the high fertility of the soil and conducive climatic features. The growers adopted a high population density per unit area. All the growers used clone RRII 105 for planting and majority used polybagged plants. The study also revealed that growth of plants were satisfactory even if the stand per hectare was high. Another interesting factor noted was that the fungal diseases were very negligible. Weed growth was found to be little due to prolonged floods (7 to 15 days) during July- August. The average yield obtained was high when compared to the national average. As the growers preferred high intensity tapping, tapping panel dryness showed an increasing trend. The study showed that the growers in this area are not strictly following the management practices recommended by the Rubber Board. The studies, thus indicated that rubber cultivation is economic and viable in garden lands of Kuttanad taluk. Field studies are to be initiated to find out the optimum population density per hectare and manorial practices for enhancing productivity in the taluk.