The affix yat comes in the sense of 'whose root is eradicated' after the word mūla being in the Nominative 1st-Case in construction.,
The word आबर्हि from वृहू 'to up root,' means 'uprooting,' = उत्पाटनं ॥ मूलमेषामाबर्हि = मू꣡ल्याः 'a kind of pulse' e. g. माषा । मुद्गाः ॥ These cereals cannot be harvested without uprooting the whole plant. According to Padamanjari the word should be आवर्हि and not आबर्हि, with a व and not ब ॥,