الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
This study was carried out to evaluate the response of some vegetable crops such as sweet potato and green pepper for mechanical transplanting. Also, to improve the field performance of the hand feed vegetable transplanting machine in terms of field capacity, field efficiency, transplanting accuracy, that concluded, longitudinal dispersion, transverse dispersion, seedling depth, degree of seedling slope angle, absent seedlings, of transplanting machine, energy requirements, criterion cost and determine the optimum parameters affecting the performance of the modified transplanting machine. Field results indicated that: The performance of the modified transplanting machine will be influenced by tractor forward speed, seedling distance in row, and slope angle of feeding tube with vertical. The developed attained by adding two limit switches, Sound source and feeding tube to transplanting machine; when the pocket passes into the guide plate without seedling, it gives sound for reserve labor to put seedling in the tube to compensate the absent seedlings. The main results of the present study could be revealed that, The modified transplanting machine is recommended to be use for transplanting sweet potato, green pepper and other vegetable crops because fulfill a good results with mentioned measurements. The optimum studied factors are forward speed 1.5 km/h., seedling distance 18 and 31 cm and angle of feeding tube zero degree is recommended for transplanting sweet potato and green pepper crops respectively by using the modified machine.