Food Solutions New England (FSNE) is a regional food systems learning-action network dedicated to advancing a sustainable New England food system. The FSNE network is organized around four interrelated activities:
A New England Food Vision, a bold vision that calls for our region to build the capacity to produce up to 70% of food that is produced in an environmentally and socially sustainable manner, that promotes health and is accessible by all New Englanders by 2060; New England state food planning initiatives; annual New England food summits and topical workshops; and related analysis, communication and visualization.
The UNH Sustainability Institute serves as the backbone organization for FSNE. Since its inception in 2006, FSNE has advanced its mission by linking a common agenda, shared measurement, continuous communication, and synergestic activities.
I agree that a common "trunk" for farm practice record keeping is needed - that can have "branches" for all the various type of analysis that a farm might want to do along the way. As you mention it doesn't make sense to enter the same data in several systems throughout the year.
Other spreadsheet products might be considered too - Open office and google docs spreadsheets for example. Google docs/drive has a mobile interface that would make editing in the field fairly easy. There are now lots of mobile spreadsheets and mobile excel, - the question I suppose is integration.
I think that integration of enterprise analysis tools with the field planning and records keeping will become inevitable at some level - and in the future may be facilitated by farm hack tools like http://farmhack.net/shop/apitronics to auto populate fields or http://farmhack.net/tools/ifarm-imaging-agricultural-research-and-manage... or provide an up to date visual reference to spreadsheet data without even getting into georeferenced images and GIS etc.
Here is a list of the related tools listed so far on Farm Hack
http://farmhack.net/tools/enterprise-budgets-lists-downloads
http://farmhack.net/tools/open-enterprise-budget-organic-eggs
http://farmhack.net/tools/oilseed-oil-meal-and-biodiesel-cost-calculator
http://farmhack.net/tools/crop-planning-software
Gocrop.com out of UVM is also coming along for nutrient management analysis. It has a mobile interface and may become open source as it evolves.