Chemical and physical changes in standing cereal straw residues in no-till fallow and its relationship to nitrogen and phosphorus availability
Adjustments to nitrogen and phosphorus fertilization rates may be required in fields which receive a no-till (herbicide) fallow treatment as compared to the conventional tillage fallow. For example, there is potentially greater immobilization of nutrient in no-till fields.
IPNI-1993-CAN-SK11
30 Aug 2001
Objectives
- To determine the nature and extent of changes in the composition of standing wheat and barley straw during a no-till (herbicide) fallow, and to examine how the changes in residue composition are related to nitrogen and phosphorus availability when the residue is incorporated into the soil at the time of seeding.