When the victim approached Baikie in the street without warning, Baikie pulled a 9cm-bladed knife from his pocket and plunged it into his nephew's stomach.
It caused a deep puncture wound in the omentum [fat surrounding the bowel] and the victim was hospitalised for a number of days and spent several more recuperating at home.
Crown prosecutor Ashley Shore said this was "extreme, unprovoked violence" which could have caused more serious injury or even death.
Shore said a six- to seven-year prison sentence was justified with a small uplift for prior convictions before allowing discounts for Baikie's guilty plea and any mitigating factors.
Baikie's lawyer William McNichol argued the starting point should be five years' prison and his client deserved the full 25 per cent discount for his early guilty plea.
McNicol also urged Judge Coyle to disregard Baikie's prior convictions given they were several years ago and unrelated.
Baikie, who worked in an orchard, had the knife for work purposes and the stabbing had been a "spontaneous and unpremeditated action" on his part which he regretted, McNichol said.
Baikie immediately went to the police station and confessed, and he had been willing to participate in a restorative justice meeting, McNicol said.
Judge Coyle told Baikie he agreed with Ms Shore given the "extreme violence" and potential risk to the life of his victim.
The victim impact statement revealed that there had also been financial losses for the victim, who had been due to start a new job when he was attacked, the judge said.
Judge Coyle said Baikie's early convictions for possession of an offensive weapon and assault were relevant factors he needed to take into account.
Baikie had an underlying diagnosis of schizophrenia and had been drinking but that did
not diminish his culpability "nor excuse the unprovoked extreme violence" he meted out.
Judge Coyle said he needed to denounce and deter Baikie and other members of the community with the four years and seven months prison sentence imposed.