CONTENTS

Table 10. Main effect results for Mehlich 3 extractable nutrients from a depth of 0 to 6 inches taken during the spring
and fall of 2009.
P K S Ca
Spring Fall Spring Fall Spring Fall Spring Fall
---------------------------mg kg -1 ---------------------------------
Tillage
Conventional 72 a 61 a 118 a 108 a 9.9 a 7.1 a 1930 a 1687 a
No-Till 73 a 65 a 93 b 90 b 8.4 b 6.1 b 2002 a 1765 a
Rotation
Rice-Rice 70 a 61 a 102 a 96 a 9.0 a 6.3 a 2017 a 1799 a
Rice-Fallow 68 a 62 a 108 a 99 a 9.4 a 6.9 a 1980 a 1745 a
Rice-Soybean 80 a 64 a 104 a 95 a 9.2 a 6.6 a 1932 a 1624 a
Rice-Sorghum 73 a 65 a 108 a 105 a 9.1 a 6.7 a 1937 a 1736 a
† Means within each column followed by a different letter are significantly different at the P = 0.05 level of confidence
as determined by the Duncan post hoc test.
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