Informatics Publishing Limited

S. N. Sharma , C. N. Pandey , H. C. Kanojia , Mani Ram

Abstract

Trials with vapour phase ammonia plasticization of air-dried timber have indicated that species like Acrocarpus fraxinifolius, which are not amenable to steam bending, can be bent reasonably successfully and species like Mangifera indica, which respond to some extent to steam bending, can be bent to sharper curvatures by this technique. 13 mm strips of Grevillea robusta needed only 1 hr treatment at 5 kg/cm² pressure to bend to a radius of 37 mm (R/T = 3) while Acrocarpus fraxinifolitius and Mangifera indica needed 3 hr treatment to achieve the same result. A higher wood moisture content at the time of treatment appeared 10 improve the rate and degree of plasticization and the bending behaviour. Further trials are proposed to produce bent wood furniture items using this technique.

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C. M. ¹, R. Jalwania ², L. N. Verma ³, R. K. B ⁴, P. C. ⁵, Mani Ram ⁶

Affiliations
1 Krishi Vigyan Kendra, Dungarpur,, IN
2 Krishi Vigyan Kendra, Dungarpur, Rajasthan, IN
3 Krishi Vigyan Kendra, Jaipur, Rajasthan, IN
4 Krishi ViBundi, Rajasthan, IN
5 Krishi Vigyan Kendra, Dasthan, IN
6 Krishi Vigyan Kendra, Rajsamand, Rajasthan, IN

Abstract

Dungarpur is one of the most backward districts of Rajasthan (India) having 70.8 per cent of populations are tribal. Chilli (Capsicum annuum), bottle gourd (Lagenaria sineraria) and tomato (Lycopersicon esculentum) are the three major vegetable crops grown in the district. Farm Science Centre known as Krishi Vigyan Kendra laid down front line demonstrations on these three vegetable crops under NAIP project by introducing hybrid varieties and applying scientific package of practices in their cultivation. The productivity and economic returns of chilli, bottle gourd and tomato in improved technologies were calculated and compared with the corresponding farmer's practices (local checks). All the three vegetable crops recorded higher gross returns, net return and benefit cost ratio in improved technologies as compared to the plots where farmers were using traditional practices in their cultivation. It is suggested that location-specific integrated approaches would be needed to bridge the productivity gap of the vegetable crops grown in the district.

Keywords

monstrations, Technology, Extension Gaps, Technology Index, Improved Technologies, Economics

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