Favorable responses to spot and strip fumigation treatments in the almond orchard replant trials and to crop rotation in the microplot trials led to validations in a peach orchard replant trial.
There was no significant interaction between soil fumigation and crop rotation in annual or cumulative yields (P > 0.
05) separation between treatments including: (i) continuous wheat and all crop rotation
and crop-pasture rotation treatments; (ii) crop rotation
-DD and both crop rotation
-NT treatments; and (iii) annual pasture and both crop rotation
2006) found that during 24 years of experimentation on a Chromic Luvisol, crop rotations and tillage methods did not significantly affect the dynamics of Pi, and the transfer of P to deeper soil layers was limited.
Soil P dynamics within the profile is affected by crop rotation, stubble management, and tillage practices, in part reflecting changes in the organic P (Po) pools (Bunemann et al.
This shows that crop rotation
and tillage practices have a greater effect on yields than any 'advantages' that might be offered by climate change, such as growth-boosting and water-saving effects from C[O.
1998) studied the residual effects of various crop rotations
on wheat yields, soil N, and SOC in a rainfed black Vertosol, and similarly reported that the residual effects of grain legume rotation crops on these soil properties and wheat yields were short-lived.
Had we only looked for changes in total carbon or organic matter, we might have concluded erroneously that pastures and crop rotations
had no effect on soil microbial properties," Acosta-Martinez says.
REAP can account for the effects of crop rotations
, production practices, soil types, and geographical characteristics of specific regions," says ERS economist Scott Malcolm.
Years of conventional tillage, coupled with little crop rotation
, have severely depleted the soil organic matter--in some areas to less than 1 percent.
Foxtail millet joins other crops like proso millet and sunflowers in crop rotations
that are slowly replacing the older routine of wheat one year, then fallow the next.
A 3-year crop rotation
with IPM challenges traditional farming in eastern Washington and Idaho.