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Developing A Crop Based Strategy For On The Go Nitrogen Management In Irrigated Cornfields
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Book Synopsis Developing a Crop Based Strategy for On-the-go Nitrogen Management in Irrigated Cornfields by : Fernando Solari
Download or read book Developing a Crop Based Strategy for On-the-go Nitrogen Management in Irrigated Cornfields written by Fernando Solari and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Integrated Crop- and Soil-based Strategy for Variable-rate Nitrogen Management in Corn by : Darrin F. Roberts
Download or read book An Integrated Crop- and Soil-based Strategy for Variable-rate Nitrogen Management in Corn written by Darrin F. Roberts and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Nitrogen Management of Corn with Sensor Technology by : Andrew Neil Tucker
Download or read book Nitrogen Management of Corn with Sensor Technology written by Andrew Neil Tucker and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn (Zea mays) is an important cereal crop in Kansas primarily used as livestock feed for cattle in the feedlots, and there has been increased use of corn for ethanol production as well. According to the USDA National Agriculture Statistics approximately 1.7 million hectares of corn is planted each year in Kansas, with an average yield ranging from 5,750-7,750 kg ha[superscript]-1 within the last five years (2005-2009). With this variability in yield and volatility of crop and fertilizer prices over that same period, it seems logical that optimum nitrogen or N rates may vary. A series of 14 field experiments were conducted across Kansas from 2006 through 2009 to address this issue. Specific experiments included: evaluating optimum N rates from side-dressing nitrogen fertilizer; timing of nitrogen application, pre-plant vs. split applications and normal side-dress V-6-V-9 vs. late side-dress V-14-V-16; N response of corn to a late side-dress of nitrogen fertilizer; and the evaluation of optical sensors for making in season N recommendations. The specific objectives of this research were to: a. Determine the optimum N application rate and timing to optimize corn grain yields in different corn producing regions in Kansas. b. Confirm or revise the current K-State soil test based N recommendation system for corn. c. Evaluate N management strategies using the GreenSeeker, Crop Circle, and SPAD meter, crop sensors. d. Develop draft GreenSeeker, Crop Circle, and SPAD sensor algorithms for producers to use. Grain corn yields were responsive to N at all but 3 sites. Grain yields obtained at the sites ranged from 3,460 to 15,480 kg ha[superscript]-1. Optimum N rates varied from 0 to 246 kg N ha[superscript]-1. This work suggests that current K-State N fertilizer recommendations for corn need revisions due to over recommendation of N. Including different coefficients for irrigated and dry land corn along with N recovery terms would create a more accurate N recommendation system that more closely reflects the results obtained in these experiments, and provide a significant improvement over the current system. The optical sensors used in this study were effective at making N recommendations for corn. These sensors can be a valuable tool for producers to use and determine in season N status of corn.
Book Synopsis Managing Nitrogen for Crop Production by : Peter Scharf
Download or read book Managing Nitrogen for Crop Production written by Peter Scharf and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among crop nutrients, nitrogen has the most complex chemistry and behavior in soil, gives the largest yield responses, and is the most difficult to manage. Managing Nitrogen in Crop Production condenses the latest research and thinking from leading experts in nitrogen. The result will increase your understanding of nitrogen and your odds of managing it successfully.
Book Synopsis Integration of Remote Sensing and Crop Growth Modeling for Nitrogen Management Decision Support in Corn by : Kelly Robert Thorp
Download or read book Integration of Remote Sensing and Crop Growth Modeling for Nitrogen Management Decision Support in Corn written by Kelly Robert Thorp and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes efforts to move toward a completely integrated remote sensing and crop growth modeling tool for developing precision nitrogen management recommendations for corn. Aerial hyperspectral remote sensing imagery collected throughout the 2004 growing season was used to estimate corn plant stand density, and a machine vision system was used to map corn population on the ground. Multiple linear regression analysis was used to assess the ability of all combinations of three reflectance bands to estimate corn plant population at resolutions of 2 m, 6 m, and 10 m. Coefficients of multiple determination of up to 0.82 were achieved in this endeavor. Although some limitations apply, remote sensing can be used as a tool to provide corn plant population inputs for crop growth simulations. A cross validation technique and bivariate confidence ellipses were used to evaluate CERES Maize simulations of spatial corn yield variability across an Iowa cornfield. Results indicated that the model performed most poorly when using the wettest or driest growing seasons to validate the model, because the model parameters fitted under the conditions of moderate growing seasons were less flexible for simulating yield in growing seasons with more extreme weather. Results also indicated that topography affects the model performance spatially. CERES-Maize was also used to simulate yield and unused nitrogen remaining in the soil at harvest for a sequence of historical weather data. Simulations were run for 13 spring-applied nitrogen rates over a cornfield divided into 100 0.2 ha grid cells. A methodology based on cumulative probability distributions was then developed to use model output for assessing the link between yield and nitrogen left behind for various nitrogen rates in each grid cell. This methodology can be used to develop precision nitrogen management strategies that address both the economic and environmental concerns of nitrogen management practices. Although the three projects in this dissertation furthered the development of remote sensing, crop growth modeling, and decision support technologies, more work is required to obtain a completely integrated tool for development of precision nitrogen management strategies in Midwestern cornfields.
Book Synopsis Best Management Practices for Nitrogen Use on Irrigated, Coarse-textured Soils by : Michael A. Schmitt
Download or read book Best Management Practices for Nitrogen Use on Irrigated, Coarse-textured Soils written by Michael A. Schmitt and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Nitrogen Soils for Corn Production on Irrigated Sandy Soils by : George William Rehm
Download or read book Managing Nitrogen Soils for Corn Production on Irrigated Sandy Soils written by George William Rehm and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Precision Agriculture by : Richard Ferguson
Download or read book Precision Agriculture written by Richard Ferguson and published by . This book was released on 2007 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Management in Irrigated Agriculture by : Roy S. Rauschkolb
Download or read book Nitrogen Management in Irrigated Agriculture written by Roy S. Rauschkolb and published by Oxford University Press, USA. This book was released on 1994 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen constitutes about 79 percent of the earth's atmosphere, yet, in an agricultural plant production system, it is still common for soils to be deficient in the nitrogen needed for maximum plant growth. Nitrogen fertilizers, however, despite being essential for the economically driven production of food and fiber, are recognized as polluters of natural waters, and it has become increasingly apparent that manufactured and naturally occurring nitrogen resources must be better managed. This book addresses the problem by describing how such factors as types of soils and crops, irrigation methods, climate, and the nitrogen cycle itself affect levels of nitrogen in agricultural plant production systems. The book also provides a practical guide to the use of different fertilizers with regard to environment, type of plant, and method of farming. This book will help to achieve effective nitrogen management in agriculture and will be of interest to workers in local, state, and federal agricultural extension services, consulting firms, environmental regulators, and students and researchers in soil chemistry.
Download or read book Optical Sensors written by Moh Yasin and published by BoD – Books on Demand. This book was released on 2014-03-19 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of works presenting recent developments and practical applications in optical sensor technology. It contains 10 chapters that encompass contributions from various individuals and research groups working in the area of optical sensing. It provides the reader with a broad overview and sampling of the innovative research on optical sensors in the world.
Book Synopsis Proceedings of the Great Plains Soil Fertility Conference by :
Download or read book Proceedings of the Great Plains Soil Fertility Conference written by and published by . This book was released on 2008 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Management in Crop Production by : Nand Kumar Fageria
Download or read book Nitrogen Management in Crop Production written by Nand Kumar Fageria and published by CRC Press. This book was released on 2014-06-25 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main approaches for safeguarding food security, sustainable development has increased demand for knowledge on fertilizer management in crop production. Among essential plant nutrients, nitrogen is one of the most important yield-limiting nutrients, mainly responsible for determining yield and yield components in cereals and legumes. It is also responsible for the activation of many enzymes and, of course, plays an important role in photosynthesis. With a recovery efficiency of less than 50 percent in most cropping systems, a large portion of the nitrogen applied as fertilizer is not used by plants, creating environmental and economic issues. Nitrogen Management in Crop Production covers the critical aspects for the judicious use of nitrogen in cropping systems. This includes appropriate methods of nitrogen application, effective source and timing of application during crop growth cycles, use of an adequate application rate to avoid loss and reduce cost, use of nitrogen-efficient crop genotypes, and use of legumes that fix sufficient amounts of atmospheric nitrogen. There is also a chapter on organic matter and its role in sustainability. This book presents recent information from the international literature, making it relevant for most agroecological regions. Chapters provide experimental results to aid in practical application of the information. The book contains color photos of nitrogen deficiency symptoms to serve as a guide for important crop species, such as rice, dry bean, wheat, soybean, and corn. It also includes numerous tables and figures, providing an easy-to-read reference.
Book Synopsis Nitrogen in Agriculture by : Khan Amanullah
Download or read book Nitrogen in Agriculture written by Khan Amanullah and published by BoD – Books on Demand. This book was released on 2018-02-01 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is the most yield-restraining nutrient in crop production globally. Efficient nitrogen management is one of the most important factor for improving nitrogen use efficiency, field crops productivity and profitability. Efficient use of nitrogen for crop production is therefore very important for increasing grain yield, maximizing economic return and minimizing nitrous oxide (N2O) emission from the fields and nitrate (NO3) leaching to ground water. Integrated nitrogen management is a good strategy to improve plant growth, increase yield and yield components, grain quality and reduce environmental problems. Integrated nitrogen management (combined use of chemical + organic + bio-fertilizers) in field crop production is more resilient to climate change.
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.
Book Synopsis Nitrogen Management Strategies to Improve Corn Growth and Reduce Soil Greenhouse Gas Emissions from Claypan Soils by : Tyler W. Steusloff
Download or read book Nitrogen Management Strategies to Improve Corn Growth and Reduce Soil Greenhouse Gas Emissions from Claypan Soils written by Tyler W. Steusloff and published by . This book was released on 2018 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adoption of nitrogen (N) management strategies to minimize gaseous N loss from agriculture while maintaining high yield production is increasingly important for an exponentially growing population. Agricultural management on poorly-drained claypan soils in the Midwestern U.S. make corn (Zea mays L.) production even more challenging due to the subsoil's low permeability, which may result in wetter soil conditions and relatively larger amounts of soil N[subscript 2]O emissions during the growing season. The objective of this study was to determine the effects of urea fertilizer placement with and without the addition of a nitrification inhibitor (NI) on corn yield, N use efficiency (NUE), and cumulative soil N[subscript 2]O emissions on a Northeastern Missouri claypan soil. The fertilizer strategies utilized in this study consisted of deep-banded urea (DB) or urea plus nitrapyrin [2-chloro-6-(trichloromethyl) pyridine] (DB+NI) at a depth of 20 cm compared to urea broadcast surface applied (SA) or incorporated to a depth of 8 cm (IA). The addition of a NI with deep-banded urea resulted in 27% greater apparent N recovery efficiency than all other N treatments. Additionally, DB+NI had 54 and 55% lower cumulative soil N[subscript 2]O emissions than IA and SA treatments in the two combined growing seasons. These results suggest that deep placement of urea with or without nitrapyrin is an effective management strategy for increasing corn yield and reducing N loss on a claypan soil.
