Optimization of variables of a digger for digging of carrot crops

In India, most of root crop is harvested manually and it consumes high labour and time for harvesting. The optimization of a tractor operated digger was evaluated at farmer’s field for the carrot crop. The digger was optimized for forward speeds of 2.2, 2.7 and 3.2 km h-1 and the rake angles of blade as 170, 200 and 230. The parameters viz., digging efficiency, undug, cut, bruised and exposed percentage was optimized as per the experiment. The performance of the digger was found to be best at a speed of 2.2 km/ hr and blade angle of 23 degree with a The digging efficiency, cut percentage, exposed percentage and bruised percentage of carrot crop was found to be 100 , 46.2, 92.12 and 28 %, respectively. The capacity of the machine was 0.18 ha/h. The break-even point for digger was 35.14 hour per year. The payback period of digger was 0.24 year.

Developing a new and simple natural deep eutectic solvent based ultrasonic-assisted microextraction procedure for determination and preconcentration of As and Se from rice samples

Optimization of variables affecting the NADES-UAME procedure.