Corn ear size
After 84 days of planting, corn ear size was observed for yield production. All ear corn treated with chitosan in
all fractions showed a bigger size compared to the control. Figure 7 presents the comparison of ear size treated with
C2 (10 – 30 kDa) at 20 ppm and the control after 84 days of planting. Diameter of ear sprayed with C2 at 100 ppm
is 22 cm while that sprayed with the control is 12 cm. However, many ears fail to form kernels. The cause of this
may be late silk emergence and lack of pollen.