- Evaluate the effect of timing of N application on broccoli yield.
- Evaluate N uptake efficiency in broccoli and sweet corn at optimal and suboptimal N rates and continue to refine measurements of nitrate leaching.
- Evaluate the N-trapping efficiency of catch crops following 1991 and 1992 broccoli crops.
- Evaluate the effects of N placement on cauliflower and sweet corn yield.
- Evaluate the potential for leaching of nitrate from cauliflower plantings fertilzed with the optimal rate of N.
- Evaluate the possibility of interseeding as a means of establishing a catch crop in cauliflower.
- Evaluate the effect of several N sources on sweet corn yield.
- Evaluate sweet corn response to catch crops and evaluate the N-trapping efficiency of catch crops following corn with both standard and reduced herbicide inputs.