Soil Management: Experimental Basis for Sustainability and Environmental QualityThe experiments and experiences discussed in Soil Management carefully document crop production systems with well-defined boundaries. These long-term agronomic trials provide a valuable data resource that has, until now, been largely ignored by both the research community and the sustainability experts. With a rigorous definition of sustainability and this data, the sustainability of various cropping systems will be more clearly illustrated than any previous effort. Particular emphasis is given to research involving the tropics and sub-tropics. This book is unique in providing an experimental basis for sustainable management of soil resources. It describes technological options for sustainable management of soil resources and identifies priorities for additional long-term experimentation needed in key ecoregions. Topics discussed include changes in soil processes and properties, environmental quality, soil management, soil dynamics, soil organic matter, and nutrient cycling. Soil Management is for those who ask whether agriculture is sustainable, want to analyze or review sustainability experiments and experiences, or wish to initiate new long-term trials. It is a valuable reference on soil processes and an excellent text for courses in soil management. |
Contents
Managing Soils for Enhancing and Sustaining Agricultural | 1 |
Synthesis of LongTerm Soil Management Research on Ultisols | 13 |
The Role of Forage Grasses and Legumes in Maintaining | 61 |
Soil Alterations in Perennial Pasture and Agroforestry Systems | 85 |
Extrapolating Results of LongTerm Experiments | 105 |
Technological Options for Sustainable Management of Alfisols | 123 |
LongTerm Fertilizer and Crop Residue Effects on Soil and Crop | 141 |
Yield Decline and the Nitrogen Economy of LongTerm Experiments | 181 |
Improved CropLivestock Production Stategies for Sustainable Soil | 293 |
LongTerm Soil Fertility Management Experiments in Eastern | 347 |
The Effects of Long Continued Applications of Inorganic Nitrogen | 385 |
LongTerm Trials on Soil and Crop Management at ICARDA | 447 |
An Integrated Approach to Soil Management Experiments | 473 |
The Tropical Soil Productivity Calculator A Model for Assessing | 499 |
Potential and Constraints | 521 |
Need for LongTerm Experiments in Sustainable Use | 537 |
LongTerm Soil Management Experiments in Semiarid | 225 |
LongTerm Experiments on Alfisols and Vertisols in | 267 |
Common terms and phrases
acid soils Agric agroforestry Agron Alfisols alley cropping Amazon annual application biomass bulk density changes in soil chemical Chinsali continuous cropping cotton crop production crop residue crop yields cropping systems cultivation decrease degradation effect erosion expt factors fallow farming systems Figure forage forest grazing ha¯š haš yrš Haque ILCA improved increase inorganic inputs IRRI irrigated Jenkinson kg haš kg N haš land area legumes levels lime long-term experiments LTCCE LTSM experiments maize Manaus manure measured mineralization mulch Nigeria nitrogen Oxisols pasture phosphorus plant plots potential rainfall region reps Research rice root rotation Sanchez savanna season soil depth soil fertility soil management soil organic matter soil pH soil physical soil productivity soil properties Soil Sci soil series sorghum subsoil sustainable agriculture Table tillage total soil treatments tropical Ultisols uptake Vertisols wheat yield trends Yurimaguas