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Author: David Theodore Graybill Publisher: ISBN: 9780355068146 Category : Dairy cattle Languages : en Pages : 244
Book Description
Understanding N transformations in fields receiving dairy manure applications is an important component of managing this nutrient source to maximize crop profitability and reduce environmental damage. The objective of this study was to determine the net N mineralization from field applied dairy cow manure to a Portneuf silt loam as affected by applications of varying rates, application intervals, and naturally fluctuating temperatures throughout the growing season. This study was conducted in a field located at the USDA Agricultural Research Service (ARS) Northwest Soil Research Laboratory (NWISRL) station in Kimberly, Idaho. Soil treatments included three manure rates (17.3, 34.7, 52.0 Mg ha−1, dry basis applied at two recurrence intervals (annual or biennial fall applications). The field was sprinkler-irrigated under spring barley (Hordeum vulgare L.) in 2013 and sugar beets (Beta vulgaris L.) in 2014. We monitored net N mineralization in the 2013 and 2014 growing seasons using the buried bag technique (amended soils were placed in polyethylene tube shaped bags and incubated in the field). Soil filled incubation bags were destructively sampled monthly or biweekly from March to October and analyzed for nitrate and ammonium. Predictive models were fit based on the analyses results. Crop N uptake was determined from end of season plant tissue analyses. Crop N uptake correlated well with N mineralization monitored in the buried bags yielding a linear regression r-square of 0.74. Manure that was fall-applied in 2012 resulted in significant increases in preplant soil inorganic N concentrations in 2013. In addition, manure treatments that either did or did not receive additional fall-applied manure in 2013 resulted in significant increases in preplant soil inorganic N concentrations in 2014.The zero-order linear model was selected for estimating N mineralization rate (k), N mineralization amount, the y-intercept, and data variability (r-square) over the growing seasons of 2013 and 2014 separately. The linear N mineralization rate showed a consistent increase in the release of N from April to September at one and two years after application as well as after two years of repeated fall applications. Increasing manure application rates also resulted in a linear increase in net N mineralization rates (k values) one and two years after a fall application, as well as after two years of repeated fall applications at the 0-30 cm soil depth.
Author: David Theodore Graybill Publisher: ISBN: 9780355068146 Category : Dairy cattle Languages : en Pages : 244
Book Description
Understanding N transformations in fields receiving dairy manure applications is an important component of managing this nutrient source to maximize crop profitability and reduce environmental damage. The objective of this study was to determine the net N mineralization from field applied dairy cow manure to a Portneuf silt loam as affected by applications of varying rates, application intervals, and naturally fluctuating temperatures throughout the growing season. This study was conducted in a field located at the USDA Agricultural Research Service (ARS) Northwest Soil Research Laboratory (NWISRL) station in Kimberly, Idaho. Soil treatments included three manure rates (17.3, 34.7, 52.0 Mg ha−1, dry basis applied at two recurrence intervals (annual or biennial fall applications). The field was sprinkler-irrigated under spring barley (Hordeum vulgare L.) in 2013 and sugar beets (Beta vulgaris L.) in 2014. We monitored net N mineralization in the 2013 and 2014 growing seasons using the buried bag technique (amended soils were placed in polyethylene tube shaped bags and incubated in the field). Soil filled incubation bags were destructively sampled monthly or biweekly from March to October and analyzed for nitrate and ammonium. Predictive models were fit based on the analyses results. Crop N uptake was determined from end of season plant tissue analyses. Crop N uptake correlated well with N mineralization monitored in the buried bags yielding a linear regression r-square of 0.74. Manure that was fall-applied in 2012 resulted in significant increases in preplant soil inorganic N concentrations in 2013. In addition, manure treatments that either did or did not receive additional fall-applied manure in 2013 resulted in significant increases in preplant soil inorganic N concentrations in 2014.The zero-order linear model was selected for estimating N mineralization rate (k), N mineralization amount, the y-intercept, and data variability (r-square) over the growing seasons of 2013 and 2014 separately. The linear N mineralization rate showed a consistent increase in the release of N from April to September at one and two years after application as well as after two years of repeated fall applications. Increasing manure application rates also resulted in a linear increase in net N mineralization rates (k values) one and two years after a fall application, as well as after two years of repeated fall applications at the 0-30 cm soil depth.
Author: Javier Zaragoza Castellanos Ramos Publisher: ISBN: Category : Animal waste Languages : en Pages : 184
Book Description
The study was planned to determine the amount of N that could be mineralized from different types of manures in two soils of contrasting texture over a year's time under greenhouse conditions.
Author: Jacob H. Dane Publisher: John Wiley & Sons ISBN: 089118841X Category : Technology & Engineering Languages : en Pages : 1744
Book Description
The best single reference for both the theory and practice of soil physical measurements, Methods, Part 4 adopts a more hierarchical approach to allow readers to easily find their specific topic or measurement of interest. As such it is divided into eight main chapters on soil sampling and statistics, the solid, solution, and gas phases, soil heat, solute transport, multi-fluid flow, and erosion. More than 100 world experts contribute detailed sections.
Author: Amabelia Silvia del Pino Machado Publisher: Cuvillier Verlag ISBN: 3736915098 Category : Science Languages : de Pages : 188
Book Description
Chemical and physical procedures were tested to forecast soil net N mineralization in a group of eight soils of Lower Saxony, varying in pedological characteristics as well as management. Most of the indexes tested were well related to N mineralization obtained through incubation under controlled conditions, being less related to the N uptake by crops, probably because this parameter was limited by differences among crops. Factors affecting N mineralization were studied in soils of Uruguay through incubation, assessing simultaneously soil microbial activity through CO2 evolution. To evaluate the influence of the amount and quality of plant residues the effect of wheat straw (WS) and N addition was tested. The WS rate determined the extent of N immobilization, which was very fast. Mineral N availability influenced the remineralization of immobilized N, being higher in N depleted soils. There was a negative effect of fertilizer N addition on soil biomass, partially counteracted by WS amendment. This effect could be caused by the pH decrease and increased salt concentration of the soil solution. The next study compared decomposition patterns of different plant materials, crop residues and green manures. Chemical composition of plant materials influenced the pace of the decomposition process. No single chemical component could explain differences in decomposition patterns. The soluble C content was responsible for the initial decomposition flush, later cellulose and hemicellulose determined in a greater extent the decomposition pace. The phenolic compounds were negative along the whole incubation. Plant materials with low N concentrations at low N levels did not show differences in decomposition patterns, despite differences in composition. Although N concentration of residues did not affect decomposition pace, was the most important characteristic explaining net N mineralization. The influence of temperature on soil organic matter (SOM) mineralization followed an exponential model in the range from 5 to 40ºC. The calculated Q10 values, for both N and C mineralization, indicate a slightly more than two fold mineralization rate increase per each 10ºC increase in the two studied soils, despite differences in texture and SOM. There was a direct relationship between C and N mineralization and gravimetric soil water content, although the two studied soils showed differences in the response to changes in water content. Substantial microbial activity was observed at high water tensions, indicating that in dry periods mineral N is likely to accumulate in the soil.
Author: Heidi M. Waldrip Publisher: John Wiley & Sons ISBN: 0891183701 Category : Technology & Engineering Languages : en Pages : 448
Book Description
The majority of meat, milk, and eggs consumed in the United States are produced in concentrated animal feeding operations (CAFO). With concentrated animal operations, in turn comes concentrated manure accumulation, which can pose a threat of contamination of air, soil, and water if improperly managed. Animal Manure: Production, Characteristics, Environmental Concerns, and Management navigates these important environmental concerns while detailing opportunities for environmentally and economically beneficial utilization.
Author: Pennsylvania. Dept. of Environmental Resources. Agricultural Advisory Committee. Manure Management Work Group Publisher: ISBN: Category : Farm manure Languages : en Pages : 28
Author: Arnab Majumdar Publisher: Frontiers Media SA ISBN: 2832544398 Category : Technology & Engineering Languages : en Pages : 158
Book Description
Soil is not only a fundamental source for all living organisms but also impacts non-living factors (water, air, minerals, etc.) making it an invaluable and finite resource. The importance of soil expands from agronomy through to industrialization, thus, it is crucial to understand the impact of human activity on soil quality. To address several global issues related to pollution, food security, and health, the United Nations promotes the Sustainable Development Goals (SDGs) with targets to ‘save soil’ by minimizing nutrient loss and pollution load from the soil. Due to increasing anthropogenic pollution load, many soil pollution control measures are failing, therefore, new technologies and eco-friendly solutions are needed to balance and restore soil health. Soil-crop interactions are essential considering the crop yield and productivity under different soil statuses. These processes, including nutrient release or soi detoxification, are mediated by soil-inhabiting microbes. In fact, the intrinsic role of soil parameters, including the different classes of soil, control soil microbiota which in turn modulate soil nutrient contents and makes these bioavailable. Different crops, especially cereals, are constantly interacting with these soil microbes, thus the relationship between soil, crops, and microbes is complex.
Author: M. Joshi Publisher: Scientific Publishers ISBN: 9386102145 Category : Technology & Engineering Languages : en Pages : 429
Book Description
Many books are written on the subject of organic farming, covering different aspects. This book covers history of organic farming and global scenario of organic farming, besides all fundamental aspects like principles, potentials, prospects, organic practices and problems in adoption of organic farming. This book is expected to be used by all students, research workers, voluntary organisations, policy makers and all those who are concerned to promote organic farming as a comprehensive dossier to cover most aspects of organic farming.
Author: David Theodore Graybill
Author: David Theodore Graybill
Author: Javier Zaragoza Castellanos Ramos
Author: Jacob H. Dane
Author: Clark D. Leedy
Author: Amabelia Silvia del Pino Machado
Author: Heidi M. Waldrip
Author: Pennsylvania. Dept. of Environmental Resources. Agricultural Advisory Committee. Manure Management Work Group
Author: Arnab Majumdar
Author: M. Joshi
Author: