Author: Mandy StokerPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The Impact of Cover Crops on Carbon Cycling as Part of an Agricultural Rotation
Author: Mandy StokerManaging Cover Crops Profitably (3rd Ed. )
Author: Andy ClarkPublisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248
Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Cover Crops and Sustainable Agriculture
Author: Rafiq IslamPublisher: CRC Press
ISBN: 100040711X
Category : Science
Languages : en
Pages : 327
Book Description
This book will not serve as the "encyclopedia of cover crop management," but it’s close. The benefits of a wide range of individual cover crops and blends/mixes for specific agronomic crop rotations and geographic locations are included. Descriptions, photographs, and illustrations show how cover crops look in the field, including plant height, leaf architecture, and rooting patterns. Long term benefits are described for soil health, soil structure, water quality, nutrient contributions, soil biodiversity, air quality and climate change. In addition to the "whys" of cover crop use, the book includes details on the "hows:" how to choose cover crops for specific applications and locations; how (and when) to plant; how to manage and maintain the cover for maximum benefit; and how and when to terminate. Planting options include: drilling/planting between rows of an agronomic crop at planting time, or when the crop is short (i.e. corn in early June); "aerial" seeding with an airplane or high-clearance machine shortly before the crop reaches maturity; and drilling/planting immediately after harvest of the agronomic crop. Selected cover crops (blends) can help with pest and disease management. Cover crops are an economic input with an expected return on investment, similar to pesticides and fertilizer. As part of a continuous no-till system, cover crops provide long-term biological, chemical and structural benefits. The resulting increase in soil organic matter means the agronomic crop yields benefit from better water infiltration and water holding capacity, greater availability of nitrogen and other nutrients, deeper rooting, and increased soil microbial activity in the root zone.
Cover Crop Effects on the Carbon Cycle
Author: Anna Marie CatesPublisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
Cover crops, or the practice of adding an unharvested crop to an annual crop rotation, are increasing in popularity and widely recommended to help retain soil, water, and nutrients on agricultural land. However, the ability of cover crops to improve soil health and sequester soil C remains unknown. Cover crops are thought likely to increase soil C because they add diversity in C inputs and increase the total growing season, but the magnitude and probability of this effect in different systems is critical for informing our understanding of cover crop efficacy and making recommendations to growers. In addition, cover crops may impact biogeochemical cycling and soil processes via changing the abiotic environment. Motivated by the need for detailed evidence of cover crop efficacy at multiple scales, I combined field-based evaluation of cover crop effects on the C cycle with an investigation into mechanisms of C storage under varying abiotic conditions. In Chapter 1, I review establishment constraints and variability in production to argue that cover cropping in northern climates requires specific agronomic systems and "buy-in" from farmers and government agencies. In Chapter 2, I used a biometric approach to the net ecosystem C balanced (NECB) of maize-cover crop and found that grain maize's NECB hovered near zero, suggesting that with or without cover crops the systems had marginal ability to increase soil C. Silage maize's NECB was always negative, despite greater rye biomass. In Chapter 3, I carried out a litterbag experiment on maize residue decomposition, soil or litter microbial decomposer community and analyzed particulate organic matter (POM) and potentially mineralizable C (PMC) as indices of active C. We found that cover crops did not alter microbial composition or maize residue decomposition rate. We observed increases in PMC and POM-C with cover crops, which were correlated with total NPP. In Chapter 4, we report on a laboratory incubation evaluating whether temperature and moisture effect on physical protection of decomposing plant litter C. We found that higher temperatures increased C mineralization, shifted bacterial composition, and decreased efficiency of conversion of litter C to soil C, but dry conditions increased soil aggregation.
Crop Rotation on Organic Farms
Author: Charles L. MohlerPublisher: Natural Resource Agriculture and Engineering Service (Nraes)
ISBN: 9781933395210
Category : Crop rotation
Languages : en
Pages : 156
Book Description
Cover Crops for Sustainable Farming
Author: Eric JustesPublisher: Springer
ISBN: 9402409866
Category : Technology & Engineering
Languages : en
Pages : 106
Book Description
This study, based on a literature review and simulations, shows the efficiency of cover crops at catching nitrate in most agriculture situations. It also analyzes both the negative impacts they can have and the ecosystem services they can provide. The introduction of a cover crop between two main crops helps catch the soil mineral nitrogen before the period of drainage and consequently reduces nitrate leaching and nitrate concentration in the drainage water. This study allows quantifying the efficiency of cover crops at catching nitrate and optimizing their implantation conditions over a large range of French pedoclimatic conditions. The presence of high nitrate levels in surface and ground waters, due to excessive nitrogen fertilization and natural production of nitrate by soil organic matter mineralization, is a double challenge for public health and environment protection.
Clever Cover Cropping
Author: Soil Management
Author: Jerry L. HatfieldPublisher: John Wiley & Sons
ISBN: 0891188533
Category : Technology & Engineering
Languages : en
Pages : 432
Book Description
Degradation of soils continues at a pace that will eventually create a local, regional, or even global crisis when diminished soil resources collide with increasing climate variation. It's not too late to restore our soils to a more productive state by rediscovering the value of soil management, building on our well-established and ever-expanding scientific understanding of soils. Soil management concepts have been in place since the cultivation of crops, but we need to rediscover the principles that are linked together in effective soil management. This book is unique because of its treatment of soil management based on principles—the physical, chemical, and biological processes and how together they form the foundation for soil management processes that range from tillage to nutrient management. Whether new to soil science or needing a concise reference, readers will benefit from this book's ability to integrate the science of soils with management issues and long-term conservation efforts.
Management of Carbon Sequestration in Soil
Author: Rattan LalPublisher: CRC Press
ISBN: 1351091158
Category : Science
Languages : en
Pages : 843
Book Description
This book addresses the importance of soil processes in the global carbon cycle.Agricultural activities considered responsible for an increase in CO2 levels in our atmosphere include: deforestation, biomass burning, tillage and intensive cultivation, and drainage of wetlands.However, agriculture can also be a solution to the problem in which carbon can be removed from the atmosphere and permanently sequestered into the soil. Management of Carbon Sequestration in Soil highlights the importance of world soils as a sink for atmospheric carbon and discusses the impact of tillage, conservation reserve programs (CRP), management of grasslands and woodlands, and other soil and crop management and land use practices that lead to carbon sequestration.
Phosphorus in Action
Author: Else K. BünemannPublisher: Springer Science & Business Media
ISBN: 3642152716
Category : Science
Languages : en
Pages : 485
Book Description
Phosphorus (P) is a finite resource which is essential for life. It is a limiting nutrient in many ecosystems but also a pollutant which can affect biodiversity in terrestrial ecosystems and change the ecology of water bodies. This book collects the latest information on biological processes in soil P cycling, which to date have remained much less understood than physico-chemical processes. The methods section presents spectroscopic techniques and the characterization of microbial P forms, as well as the use of tracers, molecular approaches and modeling of soil-plant systems. The section on processes deals with mycorrhizal symbioses, microbial P solubilization, soil macrofauna, phosphatase enzymes and rhizosphere processes. On the system level, P cycling is examined for grasslands, arctic and alpine soils, forest plantations, tropical forests, and dryland regions. Further, P management with respect to animal production and cropping, and the interactions between global change and P cycling, are treated.