For an 18 yr rotation study in Canada see: CAN J PL SCI 68,1(1988).
Other work:
ACTA AGRIC SCAND 41,119(1991) rotation/manure expt.
BIOL FERTIL SOIL 11,234(1991) on earthworms
BIOL FERTIL SOILS 12,81(1991), germany, green manure
SOIL AND TILLAGE RES 22,145(1992), rotation, no-till
SOIL TILL RES 31,149(1994) no-till soil quality
Have you seen Janke et al., Long-term, low-input cropping systems
research. In: Sust. Ag. Res. and Ed in the field, Nat. Academy Press. (1991)?
Hope these help, good luck, Hector
Hector Valenzuela
Vegetable Extension Specialist
Horticulture, University of Hawaii at Manoa
hector@hawaii.edu
http://agrss.sherman.hawaii.edu/hort/
On Wed, 27 Mar 1996, Diana Friedman wrote:
> I am currently preparing a manuscript on a long term farming systems
> project at UC Davis. I am interested in finding out about any other
> current experiments comparing organic/low input/conventional systems.
>
> A literature search has not turned up a lot of information, and so I am
> wondering if most of these experiments are so new, that there is still
> not much published. I am specifically interested in experiments that
> include corn, but any references comparing these systems would be helpful.
>
> I am mostly interested in experiment station based work, although
> side by side farm comparisons would be useful as well.
>
> I have a bit of information from previous years, from work by Lockeretz,
> Sahs, Reaganold, as well as Rodale. Any information people might
> have about other long term trials, either published, or in progress,
> would be greatly appreciated.
>
> Thanks in advance,
>
> Diana Friedman
> Research Manager
> SAFS Project-UC Davis
>