Download or read book Long term Cropping Systems Effects on Soil Aggregate Stability Corn Grain Yields and Yield Stability written by Kulbhushan K. Grover and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Aggregate Stability written by Edgar Allan C. Po and published by . This book was released on 2007 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon and Nitrogen Cycling in Soil written by Rahul Datta and published by Springer Nature. This book was released on 2019-08-24 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several textbooks and edited volumes are currently available on general soil fertility but‚ to date‚ none have been dedicated to the study of “Sustainable Carbon and Nitrogen Cycling in Soil.” Yet this aspect is extremely important, considering the fact that the soil, as the ‘epidermis of the Earth’ (geodermis)‚ is a major component of the terrestrial biosphere. This book addresses virtually every aspect of C and N cycling, including: general concepts on the diversity of microorganisms and management practices for soil, the function of soil’s structure-function-ecosystem, the evolving role of C and N, cutting-edge methods used in soil microbial ecological studies, rhizosphere microflora, the role of organic matter (OM) in agricultural productivity, C and N transformation in soil, biological nitrogen fixation (BNF) and its genetics, plant-growth-promoting rhizobacteria (PGPRs), PGPRs and their role in sustainable agriculture, organic agriculture, etc. The book’s main objectives are: (1) to explain in detail the role of C and N cycling in sustaining agricultural productivity and its importance to sustainable soil management; (2) to show readers how to restore soil health with C and N; and (3) to help them understand the matching of C and N cycling rules from a climatic perspective. Given its scope, the book offers a valuable resource for educators, researchers, and policymakers, as well as undergraduate and graduate students of soil science, soil microbiology, agronomy, ecology, and the environmental sciences. Gathering cutting-edge contributions from internationally respected researchers, it offers authoritative content on a broad range of topics, which is supplemented by a wealth of data, tables, figures, and photographs. Moreover, it provides a roadmap for sustainable approaches to food and nutritional security, and to soil sustainability in agricultural systems, based on C and N cycling in soil systems.

Download or read book Soil Management written by Jerry L. Hatfield and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book The Impacts of Continuous Corn and a Corn corn soybean wheat Rotation Grown Under Various Management Schemes on Nitrate Leaching Soil Physical Characteristics and Net Returns written by Jeffrey Smeenk and published by . This book was released on 2003 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Health in Field and Forage Crop Production written by Sjoerd W. Duiker and published by . This book was released on 2017 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genotype by Environment Interaction written by Manjit S. Kang and published by CRC-Press. This book was released on 1996-02-06 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genotype-by-Environment Interaction (GEI) is a prevalent issue among crop farmers, plant breeders, geneticists, and production agronomists. This book brings together contributions from expert plant breeders and quantitative geneticists to better understand the relationship between crop performance and environment. This information can reduce the cost of extensive genotype evaluation by eliminating unnecessary testing sites and by fine-tuning breeding programs. Molecular aspects of GEI are discussed for the first time and key bibliographical references on GEI are included in an appendix.

Download or read book The Influence of Ecological Cropping Practices on Aggregate Stability written by April Stainsby and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural cropping practices, including crop rotations with annual grains and perennial forages, cover crops, and no-till and organic management influence soil processes. Aggregate stability is a soil property that relates to many different physical and biological functions of the soil, and as such is an important indicator of soil health. It was hypothesized that aggregate stability would be improved through the following cropping system interventions: 1) including two years of alfalfa (Medicago sativa L.) in an organic annual grain rotation; 2) adding composted manure to long-term organic systems; 3) including four years of perennial forages in rotation with annual grains as a one-time intervention for system rehabilitation; and 4) including cover crops in a no-till crop rotation. Furthermore, the first two cropping system interventions were compared to conventional rotations and long-term grasslands. This research took place at two long term studies, a rotation study in southern Manitoba and a cover crop study in south eastern Saskatchewan. The rotation study included an annual grain rotation, consisting of wheat (Triticum aestivum L.) - flax (Linum usitatissimum L.) - oat (Avena sativa L.) - hairy vetch (Vicia villosa Roth) / barley (Hordeum vulgare L.) green manure, and a perennial forage and grain rotation (wheat-flax-two years of alfalfa). Composted manure was added to the organic forage grain rotation every four years. The cover crop study used black medic (Medicago lupulina L.) as a self-regenerating cover crop. Black medic produces large amounts of seed and regrows each spring, to grow under the crop and continues to grow in the fall after harvest. It was grown in a no-till wheat-flax-canaryseed (Phalaris canariensis L.) rotation at two nitrogen fertilizer levels. Aggregate stability samples were taken in both wheat and flax phases of the rotations at both sites in the spring of 2017 and 2018. A wet sieving procedure using stacked sieves with five mesh sizes was used to determine mean weight diameter (MWD) of stable aggregates. At both study sites grassland areas had higher MWD and generally more 1-6.3mm aggregates and fewer 0.25-1mm aggregates than the arable treatments. In a few cases the rotations with a perennial forage component had similar AS to the grasslands. The perennial forage increased MWD under organic management at 10-20cm depth. Manure additions did not affect AS, and in most cases neither did the perennial forage in rotation. The presence of alfalfa in the alfalfa intervention increased AS but the number of years in alfalfa did not. The black medic cover crop increased MWD with low nitrogen fertilizer in the wheat phase but not the flax phase of rotation. It was concluded that long term grasslands and cover crops were the most effective ways to improve AS at these sites.

Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Cropping Systems written by Johanna G. Hodges and published by . This book was released on 2016 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a discussion on the applications, management and impact of cropping systems. Chapter One reviews the possibility of using intercropping, especially strip intercropping, as an effective and economically efficient crop biofortification. Chapter Two evaluates phosphorus dynamics in the soil-plant system under different management practices in the semiarid land of Pampas, Argentina. Chapter Three focuses on long-term winter wheat cropping and it's influence on soil quality and yield stability. Chapter Four examines gender-based socio-economic characteristics of cassava farmers; gender-based climate change awareness of cassava farmers; gender-based cassava farmers' constraints to climate change adaptation and examines the factors influencing gender-based cassava farmers' choice of adaptation strategies in the study area. Chapter Five studies the increased soil fertility in a long-term rice-oilseed rape cropping system and its potential roles in reducing nitrogen inputs and in the environment.

Download or read book Soil Carbon written by Alfred E. Hartemink and published by Springer Science & Business Media. This book was released on 2014-04-01 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few topics cut across the soil science discipline wider than research on soil carbon. This book contains 48 chapters that focus on novel and exciting aspects of soil carbon research from all over the world. It includes review papers by global leaders in soil carbon research, and the book ends with a list and discussion of global soil carbon research priorities. Chapters are loosely grouped in four sections: § Soil carbon in space and time § Soil carbon properties and processes § Soil use and carbon management § Soil carbon and the environment A wide variety of topics is included: soil carbon modelling, measurement, monitoring, microbial dynamics, soil carbon management and 12 chapters focus on national or regional soil carbon stock assessments. The book provides up-to-date information for researchers interested in soil carbon in relation to climate change and to researchers that are interested in soil carbon for the maintenance of soil quality and fertility. Papers in this book were presented at the IUSS Global Soil C Conference that was held at the University of Wisconsin-Madison, USA.

Download or read book Building Soils for Better Crops written by Fred Magdoff and published by Sare. This book was released on 2009 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: "'Published by the Sustainable Agriculture Research and Education (SARE) program, with funding from the National Institute of Food and Agriculture, U.S. Department of Agriculture."

Download or read book Double Cropping and Interplanting written by Mary V. Gold and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crops Residue Management written by J. L. Hatfield and published by CRC Press. This book was released on 2018-01-18 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent changes in the Conservation Compliance Plans for farmers shows the need for improved information on the effective management of crop residues. Residue management requires an understanding of the crop, soil, and climate in which the farming system is located. In this volume, the strategies for effective residue management are described for each region of the country to provide a comparison of the regional differences. The chapters not only describe the knowledge in each region but also suggest some of the needed areas of research required to develop an improved understanding of the processes involved in effective residue management.

Download or read book Long and Short term Cover Crop Management Effects on Soil Health in No till Dryland Cropping Systems in the Semi arid Central Great Plains written by Logan M. Simon and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating cover crops (CCs) into dryland cropping systems in the semi-arid central Great Plains could improve soil health and provide forage for livestock. Two experiments were conducted in western Kansas to examine the effects of CC management in place of fallow on soil properties in a no-till (NT) winter wheat (Triticum aestivum L.)-grain sorghum (Sorghum bicolor Moench)-fallow (WSF) cropping system. A long-term study was initiated in 2007 near Garden City, KS to investigate CCs in a wheat-fallow (WF) rotation and was transitioned to WSF in 2012. Treatments included peas (Pisum sativum L.) for grain as well as one-, three-, and six-species CC mixtures compared to fallow. Half of each CC treatment was hayed to a height of 15 cm. A second study was initiated in 2015 near Brownell, KS, and treatments were oat (Avena sativa L.)/triticale (xTriticosecale Wittm.) CCs in place of fallow that were either hayed to a height of 15 cm, grazed by yearling heifers, or left standing. Forage accumulation and nutritive value were also determined in the experiment at Brownell. At Garden City, soil organic carbon (SOC) stocks were greater with CCs compared to fallow in 2012 after three cycles of the WF rotation. In 2018, after two cycles of the WSF rotation, SOC was similar among treatments, likely because CC residue was less following a succession of drought years. However, SOC had increased in all treatments since 2012 mostly due to the residue contribution of grain sorghum (r2 = 0.35; P = 0.0025). Soil aggregation was greater with CCs compared to peas or fallow and was unaffected by CC diversity. Mean weight diameter (MWD) of water stable aggregates (WSA) was greater with standing CCs (1.11 mm) compared to peas (0.77 mm), and standing and hayed CCs (3.59 mm) had greater MWD of dry aggregates compared to fallow (2.75 mm). Water infiltration were greater with CCs compared to peas. Findings suggest simple CC mixtures and CCs managed for forage provide similar soil health benefits as diverse CC mixtures and CCs left standing. At Brownell, results showed forage accumulation averaged 3546 kg ha−1 for standing CCs. Hayed and grazed CCs removed 73 and 26% of the available forage. Greater nutritive value with grazed CCs was observed because of differences in maturity at harvest. In 2019, SOC stocks with standing and hayed CCs (27.54 Mg ha−1) were greater than fallow (24.79 Mg ha−1) which was similar to grazed CCs (26.87 Mg ha−1). However, in 2020, SOC with hayed CCs (21.80 Mg ha−1) was less compared to grazed or standing CCs (24.27 Mg ha−1) which were similar to fallow (23.22 Mg ha−1). The MWD of WSA was greater with standing and grazed CCs (2.89 mm) compared to fallow (1.67 mm) in both years, and hayed CCs were greater than fallow in only one year. Findings suggest that CCs can replace fallow to produce forage while improving soil health. However, residue management is critical such that grazing is more desirable than haying to maintain soil properties when CC productivity is low.

Download or read book Cornell Soil Health Assessment Training Manual written by Beth K. Gugino and published by . This book was released on 2007 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Cropping Systems written by Jeffrey A. Coulter and published by MDPI. This book was released on 2020-05-21 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global crop production must substantially increase to meet the needs of a rapidly growing population. This is constrained by the availability of nutrients, water, and land. There is also an urgent need to reduce the negative environmental impacts of crop production. Collectively, these issues represent one of the greatest challenges of the twenty-first century. Sustainable cropping systems based on ecological principles are the core of integrated approaches to solve this critical challenge. This special issue provides an international basis for revealing the underlying mechanisms of sustainable cropping systems to drive agronomic innovations. It includes review and original research articles that report novel scientific findings on improvement in cropping systems related to crop yields and their resistance to biotic and abiotic stressors, resource use efficiency, environmental impact, sustainability, and ecosystem services.