Design, Development and Evaluation of Grader for Wild Bitter Gourd

A grader for wild bitter gourd (Momordica charantia) was designed on the basis of the dimensional studies of the produce. It was observed that breadth and thickness of the sample ranged from 1.19–2.5 cm whereas the length varied from 1.70–4.0 cm with a sphericity of 0.68–0.91. On the basis of graphical representation it was found that the produce fell in three discreet sections with an average diameter of less than 1.75 cm, 1.75–2.5 cm, and more than 2.5 cm. A grader was designed with two aperture sizes for the grading of produce. Validation of the designed and fabricated grader was done with the five samples obtained from different fields and evaluated for its efficiency. The grader was economical and efficient for farm level operations.