Phosphorus Dynamic in the Soil-Plant System ... 43
Figure 4. Electron micrograph (SEM) of the same fertilized sample after 360 with a
higer incresase (20X).
Figure 5. Principal components including all variables analyzed in the system under
study (rP, phosphorus rate; rN, nitrogen rate; Pi, inorganic phosphorus; Po, organic
phosphorus; Pe extractable phosphorus; dmY, dry matter yield; grY, grain yield, dmP,
dry matter phosphorus, grP, phosphorus grain; wue, water use efficiency; rcc, rain crop
cycle).
-6 -3 0 3 6
CP 1 (43%)
-6
-3
0
3
6
CP 2 (25%)
Pr
Nr
grP
dmP
grY
dmY
Pe
Po
Pi
ccrwue
Po/Po+Pi
Pr
Nr
grP
dmP
grY
dmY
Pe
Po
Pi
ccrwue
Po/Po+Pi