Only about a third of the yields Indian farmers produce reaches the big markets. Those whose produce makes it there today are able to leverage post-harvest services. Everyone else is missing out. A Noida-based startup is working with all the stakeholders — farmers, food processors, traders and financial institutions — to bridge this post-harvest services gap — and it just secured new funds to continue its journey. Seven-year-old Arya said on Tuesday it has raised $21 million in its Series B financing round. The round was led by Quona Capital,…