adjustment of sowingdate 1 in AD

[frank0434]

AD SD1 STARTING VALUES IS NOT CORRECT. NEED TO MANUALLY REDUCE ESPECIALLY FOR THE SUB SURFACE LAYERS

[frank0434]

Edit the raw data
Add 4 rows by 4 layers of artificial values AT THE ACTUAL SOWING DATE.
Changed by eyeballing the sim vs obs graph in apsimx UI.

13	13	12	10	9
13	13	12	10	9
13	13	12	10	9
13	13	12	10	9

[frank0434]

Might need to revisit some stages
b844e24
Close for now

[frank0434]

Need more detailed documentation