Low-Cost GPS Receivers for the Monitoring of Sunflower Cover Dynamics

Figure 2

Photographs of the test field on six consecutive dates: (a) 16/06/2016, (b) 30/06/2016, (c) 13/07/2016, (d) 27/07/2016, (e) 10/08/2016, and (f) 23/08/2016.

(a)

(b)

(c)

(d)

(e)

(f)