To assess the value of pre and post GS30 defoliation in spring germplasm grown in HRZ regions of different season lengths using 21st April sowing date.
To answer the questions of whether applying a preventative spray regardless of conditions was good practice (i.e. does it help in controlling disease?) and was it cost effective?
Development of the individual shoot biomasses between the four harvests and a summary table of all means of the responses including the standard error.
