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     The Chemistry and Fertility of Soils under Tropical Weeds  vii
                                                                                                          vii
                           Brief Contents
                           1.  Introduction, 1
                           2.  The Soil – Weed Interrelationships, 20
                           3.  Important Facts about Tropical Weeds, 35
                           4.  Effects of Forest Conversion, 54
                           5.  Effects of Tropical Weeds on Soil pH and
                                Enzymatic Activities, 73
                           6.  Effects of Tropical Weeds on Soil Carbon,
                                Phosphorus, Nitrogen, and Sulfur, 86
                           7.  Effects of Tropical Weeds on Soil Potassium,
                                112
                           8.  Effects of Tropical Weeds on Heavy Metals,
                                137
                           9.  Closing Remarks, 155
                           References, 160
                           Glossary, 174
                           Subject Index, 182
                                                          Abdul Kadir Salam and Nanik Sriyani  – 2019
     	
