One project will aim to develop a packaging solution for top fruit that "looks good, increases volume and is flexible yet resilient enough to enable utilising the crop within the quality tiers".
Another will share live diagnostic crop data among ten Lincolnshire pea growers to improve yields and reduce environmental impact.
Incorporating biomass imagery, it will feed real-time data into a bespoke app which will then allow growers to pro-actively reduce crop damage, forecast yields and collaborate to make informed decisions.
Sainsbury's head of agriculture Sue Lockhart said: "We've been overwhelmed by the applications from our farmers and growers. It shows that British farming is thriving with ideas."
The conference also heard about Sainsbury's Farming Scholarship programme, which will be delivered in partnership with Imperial College.
Applications for the programme are open until 31 January 2015, with the focus next year on soil.