Broadcast spraying at 100 psi, although less effective, has provided reasonable disease suppression and yield increase. Research data has consistently shown better yields with 22-inch row spacing as long as white mold has not been too severe. The closer rows may result in a thicker canopy, favoring white mold. It is almost impossible to effectively use drop nozzles on 22-inch rows. As more producers shift to 22-inch rows, we need application data with this row spacing.
Most crops are currently in the vegetative growth stage.
During this stage, the water use per day is increasing at a fast rate. In addition, root development is increasing at almost the same rate. Root growth increases the volume of soil from which the plant can draw water, which in part helps offset the increasing water use. Plants don't like to work too hard for their water, so they remove soil moisture from near the surface first and then seek moisture lower in the root zone. It actually helps promote root penetration to greater depths.