130


Table 6-9.


Column Mehlich I-extractable soil Ca by treatment and depth.


 Fertilizer application treatments
 No 100 kg/ha 400 kg/ha 400 kg/ha 1600 kg/ha
Depth Fert. x 4 apple. preplant preplant preplant
 high rain

 cm ---------- Mehlich I-extractable soil Ca (ug/g) ----------
 0 5 1760b* 1740b 1800ab 1830ab 2110a
 5 10 1740b 1790b 1680b 1820b 2280a
10 15 1620a 1700a 1130b 1480ab 1310b
15 20 1190ab 1510a 963b 1263ab 985b
20 25 1010a 1170a 860a 910a 863a
25 30 837a 931a 782a 785a 741a
30 35 697a 747a 688a 695a 625a
35 40 640a 656a 632a 582a 583a
40 45 554a 569a 549a 498a 537a
45 50 505a 448a 550a 439a 517a
50 55 443a 405a 444a 410a 441a
55 60 416a 364a 400a 351a 392a
60 65 379a 348a 376a 323a 347a
65 70 323a 341a 351a 348a 335a


t The fertilizer indicated was 20-10-10 (N-P,05-K20). In
 triple superphosphate was applied to give a ratio of
 20-10-10.


addition,
1 kg P/8 kg


* Means in the same row followed by the same letter are not
 significantly different at a 95% level of probability as determined
 by Duncan's Multiple Range Test.