Mehrgarh was not the the farming seed of South Asia:

Early Farming at Lahuradewa

This paper embodies an outcome of investigations emanated from the excavations carried out at the lakeside settlement of
Lahuradewa, from 2001 to 2006, in district Sant Kabirnagar, Uttar Pradesh, India. The continuous occurrence of microcharcoal in the lakebeds justifiably mitigate the human activities that persistently set fire to the vegetation in the area during
past  ca. 10,000 years. Palynological studies from lakebeds helped in reconstruction of  vegetational history, sequential
changes in the climate and early agricultural activities from early  Holocene and onwards in Middle Ganga Plain. The human
groups at that early date, who subjected the vegetation to fire for environmental management, were those who brought into
being a settled early farming culture at Lahuradewa  – characterised by cord-impressed pottery. Primordially, the record of
domesticated rice in the opening phase of Lahuradewa settlement, prima facie constitutes the evidence of early Holocene
agriculture in Middle Ganga Plain.

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