Table 3: Soil organic (Po), inorganic (Pi), and total extractable phosphorus (Pte) in the fine and coarse fraction of different cropping systems (CS).

YearCSFine fractionCoarse fraction
mg kg−1mg kg−1
PoPiPtePoPiPte

0Ref60.0178.0329.0129.0149.0199.0
9WG72.1b ns199.8a*221.5b**5.6a**95.2a**98.1a**
WW50.0c ns98.4b**149.7c**2.1a**73.6b**80.2b**
WL88.1a*200.8a*331.4a ns1.2a**89.7a**85.9b**
10WG127.8a149.6a305.7a6.1a81.5a91.0a
WW72.2b93.8b256.3b3.3a65.2b87.8a
WL101.6a144.3a263.2ab5.7a86.2a76.5b
11WG75.4a143.4a264.0a17.5a74.1b86.2a
WW75.4a121.0b239.5ab6.8a55.3c77.3b
WL77.6a151.5a207.9b8.9a94.1a81.8ab
12WG84.8a133.9b259.2a1.6a84.2a83.8a
WW57.9b150.7ab256.6ab8.6a83.0a108.5b
WL89.3a161.6a199.0b4.3a88.7a81.1a

, and ns indicate statistical differences , and not significant, respectively, between each treatment sampled in year 9 and reference soil. For each P form different letters indicate differences among treatments in each year.