Understanding Spatial And Temporal Variability Of Corn Yield To Improve Nitrogen Use Efficiency

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Understanding Spatial and Temporal Variability of Corn Yield to Improve Nitrogen Use Efficiency

Author : Olivia Davidson
Publisher :
ISBN 13 :
Total Pages : 105 pages
Book Rating : 4.6/5 (647 download)

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Book Synopsis Understanding Spatial and Temporal Variability of Corn Yield to Improve Nitrogen Use Efficiency by : Olivia Davidson

Download or read book Understanding Spatial and Temporal Variability of Corn Yield to Improve Nitrogen Use Efficiency written by Olivia Davidson and published by . This book was released on 2020 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two field scale studies were performed in five corn fields across southwest Michigan over three years in order to examine i) the influence of delayed corn plant emergence on final yield, and ii) the effect of strategic, varied nitrogen management on final yield, profit, and nitrogen use efficiency. Individual corn plant emergence date was documented, and kernel weight, kernel number, and biomass weights were analyzed in order to examine the importance of uniform plant stands in achieving high yields, analyzed by the known historical yield stability (Basso et al., 2019). The results showed a 22-gram decrease from early to late emergence and a 15-gram decrease in total kernel weight from early to medium emergence date, equivalent to 1,825 and 1,244 kg/ha decrease in yield. Yield stability zones differentiation showed a 19.9-gram decrease in relative total kernel weight (1,651 kg/ha) from historically high and stable yield to low and stable yield. More variability in days after planting and decreased yields were seen in the low and medium yielding zones. For the second field study, a procedure was created to variably rate nitrogen fertilization using remotely sensed imagery and crop modelling using the SALUS crop model. Whole plant destructive samples and yield monitor data were analyzed to examine the spatial and temporal variability in differing yield stability zones among all study sites. The results showed no statistically significant difference in yield or profit between nitrogen fertilization zones in most fields, while increases in nitrogen use efficiency were seen in all tactically reduced fertilization rate zones.

Understanding Soil Spatial and Temporal Variability for Forage Corn Production and Hydrological Modeling Within New Mexico

Author : Mikayla Jan Allan
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Understanding Soil Spatial and Temporal Variability for Forage Corn Production and Hydrological Modeling Within New Mexico by : Mikayla Jan Allan

Download or read book Understanding Soil Spatial and Temporal Variability for Forage Corn Production and Hydrological Modeling Within New Mexico written by Mikayla Jan Allan and published by . This book was released on 2018 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are heterogenous dynamic systems that often make it difficult for land managers to understand facets of their makeup. Geostatistical models are often used to better understand processes taking place in soil without undergoing extensive sampling. Semi-variograms and kriging maps can illustrate the amount of spatial autocorrelation for parameters of interest within a given area. This exploratory research took place in the northern part of the Chihuahuan Desert, 37 km north of Las Cruces, New Mexico at the Jornada Experimental Range (JER). Within the JER sampling was done on the outskirts of the Tromble Weir Watershed (TWW) to explore the interactions between soil depth and carbonate stages. Measured parameters included surface clay and sand percentages, depth to first carbonate occurrences, depth to maxiumum carbonate stage and maximum carbonate stage. Semi-variogram results showed a long-range spatial relationship of both surface clay (range = 259.67 m; nugget = 3; sill = 7) and sand (range = 181.13 m; nugget = 15; sill = 51) percentages within the surveyed area. Below the surface, variables became more unpredictable due to their short-range semi-variograms. Depth to maximum carbonate stage (range = 19.39 m; nugget = 249.67; sill = 600); maximum carbonate stage (range = 31 m; nugget = 0.45; sill = 0.75); and depth to first carbonate occurrences (range = 249.32 m; nugget = 5; sill = 15); all exhibited shorter ranges of spatial autocorrelation. Quantification of the range, which states the distance between soil observations, is used to produce an optimal map. All three parameters also exhibited a high nugget effect indicating unexplained short-range spatial variability. It is speculated that if more samples were taken throughout the surveyed area, the semi-variogram models would be refined, and if sampled more closely together would reduce the nugget effect. This research is useful to assist in Long Term Ecological Research within the Jornada Experimental Range--specifically the hydrological research currently taking place at the Tromble Weir Watershed.

Spatial and Temporal Dynamics of Nitrogen-water Interactions in Corn in Michigan

Author : Mohamed Eldaw M. Elwadie
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Spatial and Temporal Dynamics of Nitrogen-water Interactions in Corn in Michigan by : Mohamed Eldaw M. Elwadie

Download or read book Spatial and Temporal Dynamics of Nitrogen-water Interactions in Corn in Michigan written by Mohamed Eldaw M. Elwadie and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agriculture and the Nitrogen Cycle

Author : Arvin Mosier
Publisher : Island Press
ISBN 13 : 1597267430
Total Pages : 320 pages
Book Rating : 4.5/5 (972 download)

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Book Synopsis Agriculture and the Nitrogen Cycle by : Arvin Mosier

Download or read book Agriculture and the Nitrogen Cycle written by Arvin Mosier and published by Island Press. This book was released on 2013-04-10 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is an essential element for plant growth and development and a key agricultural input-but in excess it can lead to a host of problems for human and ecological health. Across the globe, distribution of fertilizer nitrogen is very uneven, with some areas subject to nitrogen pollution and others suffering from reduced soil fertility, diminished crop production, and other consequences of inadequate supply. Agriculture and the Nitrogen Cycle provides a global assessment of the role of nitrogen fertilizer in the nitrogen cycle. The focus of the book is regional, emphasizing the need to maintain food and fiber production while minimizing environmental impacts where fertilizer is abundant, and the need to enhance fertilizer utilization in systems where nitrogen is limited. The book is derived from a workshop held by the Scientific Committee on Problems of the Environment (SCOPE) in Kampala, Uganda, that brought together the world's leading scientists to examine and discuss the nitrogen cycle and related problems. It contains an overview chapter that summarizes the group's findings, four chapters on cross-cutting issues, and thirteen background chapters. The book offers a unique synthesis and provides an up-to-date, broad perspective on the issues of nitrogen fertilizer in food production and the interaction of nitrogen and the environment.

Crop Evolution, Adaptation and Yield

Author : L. T. Evans
Publisher : Cambridge University Press
ISBN 13 : 9780521295581
Total Pages : 516 pages
Book Rating : 4.2/5 (955 download)

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Book Synopsis Crop Evolution, Adaptation and Yield by : L. T. Evans

Download or read book Crop Evolution, Adaptation and Yield written by L. T. Evans and published by Cambridge University Press. This book was released on 1996-05-02 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this major 1993 work, Lloyd Evans provides an integrated view of the domestication, adaptation and improvement of crop plants, bringing together genetic diversity, plant breeding, physiology and aspects of agronomy. Considerations of yield and maximum yield provide continuity throughout the book. Food, feed, fibre, fuel and pharmaceutical crops are all discussed. Cereals, grain legumes and root crops, both temperate and tropical, provide many of the examples, but pasture plants, oilseeds, leafy crops, fruit trees and others are also considered. After the introductory chapter, the increasing significance of crop yields to the world's food supply is highlighted. The next three chapters consider changes to crop plants over the last ten thousand years, including domestication, adaptation and improvement. Aimed at research workers and advanced students in crop physiology and ecology, agronomy and plant breeding, this book also reaches conclusions of relevance to those concerned with developmental policy, agricultural research and management, environmental quality, resource depletion and human history.

Sensor-based Nitrogen Management on Non-irrigated Corn Based Systems in Nebraska

Author : Samantha L. Teten
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis Sensor-based Nitrogen Management on Non-irrigated Corn Based Systems in Nebraska by : Samantha L. Teten

Download or read book Sensor-based Nitrogen Management on Non-irrigated Corn Based Systems in Nebraska written by Samantha L. Teten and published by . This book was released on 2021 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimizing nitrogen (N) fertilizer applications in corn to reduce environmental impacts while maintaining producer profitability remains a challenge due to spatial and temporal variability in crop yield potential and soil N dynamics. In response to these challenges, active crop canopy sensors and imagery systems have been studied to test the performance of vegetative index-based N management, but adoption has been low. There is also a lack of field-scale research evaluating this technology in water-limiting environments. The evaluation of two sensor-based N management techniques was completed at nine non-irrigated sites in Eastern Nebraska. The first sensor-based N management technique evaluated an active crop canopy sensor and Holland-Schepers model to direct real-time, in-season N applications on corn. Compared to growers' management, active sensor management improved N use efficiency (NUE) by 16.8±8.4 kg grain kg N-1 and reduced N fertilizer inputs by 38.7±20.8 kg N ha-1 . All sites resulted in less N applied than the growers' management. Two of the nine sites resulted in significant yield losses compared to the sensor-based management with an average yield loss across all sites of 0.49±0.69 Mg grain ha-1 . Average partial profitability was $2.40±15.48 US$ ha-1 less than the growers' practices. Early season base N rates and timing influenced the NUE of active sensor N management approach. The second sensor-based management technique utilized aerial imagery and the Holland-Schepers model to develop variable-rate N prescriptions for in-season applications. The approach incorporated sub-field yield potential by varying the estimated optimum N rate used in the algorithm based on management zones (MZ). The aerial imagery-based management improved NUE compared to the growers' current management by 23.6±15.3 kg grain kg N-1 and did not result in differences in partial profit. The integration of MZs influenced the total N applied and demonstrated the potential to improve imagery-based recommendations using spatial field data. Overall, compared to grower management, active sensors improved NUE in nonirrigated sites where rainfall is a yield limiting factor. Aerial imagery-based prescriptions also improved NUE compared to grower management and provided an opportunity to further refine sensor-based management to account for sub-field variability by incorporating yield potential and soil attributes.

Precision agriculture '23

Author : John V. Stafford
Publisher : BRILL
ISBN 13 : 9086869475
Total Pages : 1127 pages
Book Rating : 4.0/5 (868 download)

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Book Synopsis Precision agriculture '23 by : John V. Stafford

Download or read book Precision agriculture '23 written by John V. Stafford and published by BRILL. This book was released on 2023-08-14 with total page 1127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precision agriculture is a reality in agriculture and is playing a key role as the industry comes to terms with the environment, market forces, quality requirements, traceability, vehicle guidance and crop management. Sensors now in use in agriculture are generating ‘Big Data’ leading to the use of machine learning and AI - an increasing challenge for agriculture. Research continues to be necessary, and needs to be reported and disseminated to a wide audience. These edited proceedings contain peer reviewed papers presented at the 14th European Conference on Precision Agriculture, held in Bologna, Italy. The papers reflect the wide range of disciplines that impinge on precision agriculture - technology, crop science, soil science, agronomy, information technology, decision support, remote sensing, data analysis and others. The broad range of research topics reported will be a valuable resource for researchers, advisors, teachers and professionals in agriculture long after the conference has finished.

Sustainable Agriculture Reviews

Author : Eric Lichtfouse
Publisher : Springer
ISBN 13 : 3319169882
Total Pages : 218 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Sustainable Agriculture Reviews by : Eric Lichtfouse

Download or read book Sustainable Agriculture Reviews written by Eric Lichtfouse and published by Springer. This book was released on 2015-07-07 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable agriculture is a rapidly growing field aiming at producing food and energy in a sustainable way for humans and their children. Sustainable agriculture is a discipline that addresses current issues such as climate change, increasing food and fuel prices, poor-nation starvation, rich-nation obesity, water pollution, soil erosion, fertility loss, pest control, and biodiversity depletion. Novel, environmentally-friendly solutions are proposed based on integrated knowledge from sciences as diverse as agronomy, soil science, molecular biology, chemistry, toxicology, ecology, economy, and social sciences. Indeed, sustainable agriculture decipher mechanisms of processes that occur from the molecular level to the farming system to the global level at time scales ranging from seconds to centuries. For that, scientists use the system approach that involves studying components and interactions of a whole system to address scientific, economic and social issues. In that respect, sustainable agriculture is not a classical, narrow science. Instead of solving problems using the classical painkiller approach that treats only negative impacts, sustainable agriculture treats problem sources. Because most actual society issues are now intertwined, global, and fast-developing, sustainable agriculture will bring solutions to build a safer world.

Growth and Quality Formation Regulated by Light in Horticulture Plants

Author : Houcheng Liu
Publisher : Frontiers Media SA
ISBN 13 : 2832549489
Total Pages : 150 pages
Book Rating : 4.8/5 (325 download)

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Book Synopsis Growth and Quality Formation Regulated by Light in Horticulture Plants by : Houcheng Liu

Download or read book Growth and Quality Formation Regulated by Light in Horticulture Plants written by Houcheng Liu and published by Frontiers Media SA. This book was released on 2024-05-27 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Horticultural crop production plays an important role in the global food supply, and horticultural plants contain numerous health-promoting phytochemicals, such as vitamins, flavonoids, polyphenols, and other secondary metabolites. The formation of yield and nutritional quality depends on the intrinsic characteristics of horticultural crops and environmental conditions. Light is the primary energy source for photosynthesis, and light, ranging from UV to far-red, is a critical factor in regulating plant growth, morphogenesis, development, and metabolic processes. The physiological and molecular regulation of plant processes is related to the intensity, spectrum, direction, photoperiod, and timing of light. And light is the most important environmental factor determining the yield and quality of horticultural crops.

Precision Agriculture for Sustainability and Environmental Protection

Author : Margaret Oliver
Publisher : Routledge
ISBN 13 : 1136468250
Total Pages : 302 pages
Book Rating : 4.1/5 (364 download)

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Book Synopsis Precision Agriculture for Sustainability and Environmental Protection by : Margaret Oliver

Download or read book Precision Agriculture for Sustainability and Environmental Protection written by Margaret Oliver and published by Routledge. This book was released on 2013-11-20 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precision agriculture (PA) involves the application of technologies and agronomic principles to manage spatial and temporal variation associated with all aspects of agricultural production in order to improve crop performance and environmental quality. The focus of this book is to introduce a non-specialist audience to the the role of PA in food security, environmental protection, and sustainable use of natural resources, as well as its economic benefits. The technologies covered include yield monitors and remote sensing, and the key agronomic principles addressed are the optimal delivery of fertilizers, water and pesticides to crops only when and where these are required. As a result, it is shown that both food production and resource efficiency can be maximized, without waste or damage to the environment, such as can occur from excessive fertilizer or pesticide applications. The authors of necessity describe some technicalities about PA, but the overall aim is to introduce readers who are unfamiliar with PA to this very broad subject and to demonstrate the potential impact of PA on the environment and economy. Chapter 3 of this book is freely available as a downloadable Open Access PDF at http://www.taylorfrancis.com under a Creative Commons Attribution-Non Commercial-No Derivatives (CC-BY-NC-ND) 3.0 license.

Resources Use Efficiency in Agriculture

Author : Sandeep Kumar
Publisher : Springer Nature
ISBN 13 : 9811569533
Total Pages : 762 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Resources Use Efficiency in Agriculture by : Sandeep Kumar

Download or read book Resources Use Efficiency in Agriculture written by Sandeep Kumar and published by Springer Nature. This book was released on 2020-09-18 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieving zero hunger and food security is a top priority in the United Nations Development Goals (UNDGs). In an era characterized by high population growth and increasing pressure on agricultural systems, efficiency in the use of natural resources has become central to sustainable agricultural practices. Fundamentally speaking, eco-efficiency is about maximizing agricultural outputs, in terms of quantity and quality, using less land, water, nutrients, energy, labor, or capital. The concept of eco-efficiency involves both the ecological and economic aspects of sustainable agriculture. It is therefore essential to understand the interaction of ecosystem constituents within the extensive agricultural landscape, as well as farmers’ economic needs. This book examines the latest eco-efficient practices used in agro-systems. Drawing upon research and examples from around the world, it offers an up-to-date overview, together with insights into directly applicable approaches for poly-cropping systems and landscape-scale management to improve the stability of agricultural production systems, helping achieve food security. The book will be of interest to educators, researchers, climate change scientists, capacity builders and policymakers alike. It can also be used as additional reading material for undergraduate and graduate courses on agriculture, forestry, soil science, and the environmental sciences.

Proceedings of the ... North Central Extension-Industry Soil Fertility Conference

Author :
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Proceedings of the ... North Central Extension-Industry Soil Fertility Conference by :

Download or read book Proceedings of the ... North Central Extension-Industry Soil Fertility Conference written by and published by . This book was released on 2004 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

OECD Compendium of Agri-environmental Indicators

Author : OECD
Publisher : OECD Publishing
ISBN 13 : 9264186212
Total Pages : 185 pages
Book Rating : 4.2/5 (641 download)

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Book Synopsis OECD Compendium of Agri-environmental Indicators by : OECD

Download or read book OECD Compendium of Agri-environmental Indicators written by OECD and published by OECD Publishing. This book was released on 2013-06-25 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides comprehensive data and analysis on the environmental performance of agriculture in OECD countries since 1990, covering soil, water, air and biodiversity and looking at recent policy developments in all 34 countries.

Remote Sensing in Precision Agriculture

Author : Salim Lamine
Publisher : Elsevier
ISBN 13 : 0323914640
Total Pages : 555 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Remote Sensing in Precision Agriculture by : Salim Lamine

Download or read book Remote Sensing in Precision Agriculture written by Salim Lamine and published by Elsevier. This book was released on 2023-10-20 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote Sensing in Precision Agriculture: Transforming Scientific Advancement into Innovation compiles the latest applications of remote sensing in agriculture using spaceborne, airborne and drones’ geospatial data. The book presents case studies, new algorithms and the latest methods surrounding crop sown area estimation, determining crop health status, assessment of vegetation dynamics, crop diseases identification, crop yield estimation, soil properties, drone image analysis for crop damage assessment, and other issues in precision agriculture. This book is ideal for those seeking to explore and implement remote sensing in an effective and efficient manner with its compendium of scientifically and technologically sound information. Presents a well-integrated collection of chapters, with quality, consistency and continuity Provides the latest RS techniques in Precision Agriculture that are addressed by leading experts Includes detailed, yet geographically global case studies that can be easily understood, reproduced or implemented Covers geospatial data, with codes available through shared links

Climate Change and Soil Interactions

Author : Majeti Narasimha Var Prasad
Publisher : Elsevier
ISBN 13 : 0128180331
Total Pages : 840 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Climate Change and Soil Interactions by : Majeti Narasimha Var Prasad

Download or read book Climate Change and Soil Interactions written by Majeti Narasimha Var Prasad and published by Elsevier. This book was released on 2020-03-06 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate Change and Soil Interactions examines soil system interactions and conservation strategies regarding the effects of climate change. It presents cutting-edge research in soil carbonization, soil biodiversity, and vegetation. As a resource for strategies in maintaining various interactions for eco-sustainability, topical chapters address microbial response and soil health in relation to climate change, as well as soil improvement practices. Understanding soil systems, including their various physical, chemical, and biological interactions, is imperative for regaining the vitality of soil system under changing climatic conditions. This book will address the impact of changing climatic conditions on various beneficial interactions operational in soil systems and recommend suitable strategies for maintaining such interactions. Climate Change and Soil Interactions enables agricultural, ecological, and environmental researchers to obtain up-to-date, state-of-the-art, and authoritative information regarding the impact of changing climatic conditions on various soil interactions and presents information vital to understanding the growing fields of biodiversity, sustainability, and climate change. Addresses several sustainable development goals proposed by the UN as part of the 2030 agenda for sustainable development Presents a wide variety of relevant information in a unique style corroborated with factual cases, colour images, and case studies from across the globe Recommends suitable strategies for maintaining soil system interactions under changing climatic conditions

Precision Agriculture Basics

Author : D. Kent Shannon
Publisher : John Wiley & Sons
ISBN 13 : 0891183663
Total Pages : 272 pages
Book Rating : 4.8/5 (911 download)

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Book Synopsis Precision Agriculture Basics by : D. Kent Shannon

Download or read book Precision Agriculture Basics written by D. Kent Shannon and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the growing popularity and availability of precision equipment, farmers and producers have access to more data than ever before. With proper implementation, precision agriculture management can improve profitability and sustainability of production. Precision Agriculture Basics is geared at students, crop consultants, farmers, extension workers, and practitioners that are interested in practical applications of site-specific agricultural management. Using a multidisciplinary approach, readers are taught to make data-driven on-farm decisions using the most current knowledge and tools in crop science, agricultural engineering, and geostatistics. Precision Agriculture Basics also features a stunning video glossary including interviews with agronomists on the job and in the field.

GIS Applications in Agriculture, Volume Two

Author : David E. Clay
Publisher : CRC Press
ISBN 13 : 1420092715
Total Pages : 472 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis GIS Applications in Agriculture, Volume Two by : David E. Clay

Download or read book GIS Applications in Agriculture, Volume Two written by David E. Clay and published by CRC Press. This book was released on 2011-02-16 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are entering a new era in production agronomics. Agricultural scientists the world over call for the development of techniques that simultaneously increase soil carbon storage and reduce agriculture's energy use. In response, site-specific or precision agriculture has become the focus and direction for the three motivating forces that are changi