Chapter 1 Introduction

Chapter 2 Inorganic Compounds Tested for Evaluation of Their Inhibiting Effect on Soil Urease Activity, Urea Hydrolysis, Ammonia Volatilization, and Nitrous Oxide Emission

Chapter 3 Organic Compounds Tested for Evaluation of Their Inhibiting Effect on Soil Urease Activity, Urea Hydrolysis, Ammonia Volatilization, and Nitrous Oxide Emission

Chapter 4 Combined Use of Inhibitors of Soil Urease Activity

Chapter 5 Comparative Studies on the Efficiency of Different Inhibitors of Soil Urease Activity

Chapter 6 Compounds Tested for Evaluation of Their Inhibiting Effect on Both Soil Urease Activity and Nitrification

Chapter 7 Soil Urease Inhibitors Used in Combination with Nitrification and/or Algal Inhibitors

Chapter 8 Effect of Soil Urease Inhibitors on Germination, Growth, and Yield of Plants

Chapter 9 Effect of Urease Inhibitors on Other Enzyme Activities, Microbial Counts and Biomass as well as on Respiration and Other Microbial Processes in Soils

Chapter 11 Urease Inhibitors Used with Another Purpose than Inhibition of Soil Urease Activity

Chapter 12 Conclusions