Soil Organic Matter in Temperate AgroecosystemsLong Term Experiments in North AmericaThe presence - or absence - of soil organic matter (SOM) has important implications for agricultural productivity. It could also have significant implications for global climate due to its role as a source/sink of carbon. Therefore, it is important to understand the issues related to the accumulation or loss of SOM, to use what we have learned from experiments to make sound decisions about soil and crop management, and to test models and future concepts concerning SOM management. A database is included with the book, presenting tabular data for 34 sites in North America. Soil Organic Matter in Temperate Agroecosystems discusses all of these issues and more, answering such questions as: |
Contents
Management Controls on Soil Carbon | 15 |
Characterization of Soil Organic Carbon Relative to Its Stability and Turnover | 51 |
Crop Residue Input to Soil Organic Matter on Sanborn Field | 73 |
SITE MANAGEMENT EFFECTS ON PRODUCTIVITY | 103 |
LongTerm N Management Effects on Corn Yield and Soil C of an Aquic Haplustoll | 121 |
Impacts | 141 |
No Till and Nitrogen Fertilizer Interactions | 148 |
Soil Organic Carbon Changes Through Time at the University | 161 |
Soil Organic Matter Dynamics in LongTerm Experiments in Southern Alberta | 283 |
Crop Production and Soil Organic Matter in LongTerm Crop Rotations in | 297 |
Crop Rotations and Fertilizer Interactions | 315 |
Crop Production and Soil Organic Matter in LongTerm Crop Rotations in | 317 |
A Conservation TillageCropping Systems Study in the Northern Great Plains | 335 |
Soil Carbon and Nitrogen Change in LongTerm Agricultural Experiments | 353 |
LongTerm Tillage and Crop Residue Management Study at Akron Colorado | 361 |
Management of Dryland Agroecosystems in the Central Great Plains of Colorado | 371 |
Management Impacts on SOM and Related Soil Properties in a LongTerm Farming | 183 |
Crop Rotation Manure and Agricultural Chemical Effects on Dryland Crop Yield | 197 |
Soil Organic Matter under LongTerm NoTillage and Conventional Tillage Corn | 227 |
Soil Carbon Level Dependence upon Crop Culture Variables in | 247 |
Changes in Ecosystem Carbon 46 Years after Establishing Red Pine Pinus resinosa Ait | 263 |
Management Effects on Soil Organic Carbon and Nitrogen in | 381 |
Management of DryFarmed Southern Great Plains Soils for Sustained Productivity | 387 |
| 405 | |
| 406 | |
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Common terms and phrases
above-ground Agric Agriculture agroecosystems Agron alfalfa amount annual applied average biomass bulk density changes in soil chemical Chernozem clay climate clover CO₂ concentrations Cont continuous corn continuous wheat conventional tillage corn yields crop residues crop rotation crop yields cropping systems cultivation decomposition decreased depth ecosystem estimated experiment fertilizer Figure forage fractions g kg-¹ grain yields grassland green manure harvest herbicide higher Hoytville increased Indian Head influence inputs kg ha-¹ kg N ha¹ kg/ha legumes levels LIP-A LIP-CG loam long-term management practices Melfort Mg ha¹ microbial biomass mineralization Morrow Plots nitrogen no-till no-tillage nutrient plant plow pool prairie precipitation R/Man Research root Sanborn Field significantly soil carbon soil organic matter soil samples Soil Sci soil water sorghum southern Great Plains soybean spring wheat stover stubble summer fallow Table temperature tillage systems total soil wheat grown wheat-fallow winter wheat Zentner