Ingenieur Vol 99 final July-Sept 2024 | Page 20

INGENIEUR
INGENIEUR
Figure 4 : Sample of soil variability map produced by SoilProp ©. The map shows the variability for Potassium in a rice field in the district of Yan , Kedah
Figure 5 : Comparison of the rice yield by using conventional fertilisation practices ( 1 / 2010 ) to the SoilProp © fertilisation recommendation ( 1 / 2011 ).
18 VOL 99 JULY - SEPTEMBER 2024