Download or read book Wheel Traffic Effects on Soil Compaction and Corn Production written by Godfrey M. N. Ngunjiri and published by . This book was released on 1994 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study to investigate the effects of tractor wheel traffic on soil compaction and corn production was conducted at the University of Illinois, Urbana, Illinois. Wheel traffic treatments included; traffic on entire plot, TE; traffic on rows, TO; traffic between rows, TB; and no traffic on the plot, NT. All plots were moldboard-plowed in fall and anhydrous ammonia applied in spring before applying wheel traffic treatments. After the wheel traffic treatments, herbicides were applied and incorporated with a disk harrow and a field cultivator before planting. Soil bulk density, moisture content and cone index were determined before and after wheel traffic treatments. Corn plant populations were determined early in the season and again at harvest. Corn plant height and dry matter weight were measured several times during the growing season. Root density distribution was assessed soon after tasseling and yields were measured at harvest. Tractor wheel traffic was observed to increase soil bulk density and cone index to a depth of 30 cm. In 1992, soil bulk density with the TE treatment increased from 1.24 g/cm$sp3$ to 1.51 g/cm$sp3$ in the top 15 cm of the soil and from 1.29 g/cm$sp3$ to 1.54 g/cm$sp3$ between depths of 16 and 30 cm. In 1993, with the same TE treatment, bulk density increased by 0.24 g/cm$sp3$ to 1.55 g/cm$sp3$ and by 0.12 g/cm$sp3$ to 1.54 g/cm$sp3$ at the corresponding soil depths. Soil cone index with the TE treatment in the top 15 cm increased by over 600 kPa to 1090 kPa in 1992 and by nearly 550 kPa to 1100 kPa in 1993. Wheel traffic compaction was observed to inhibit corn growth rate and yield and to increase barren stalk population. Barren stalk population averaged 3710, 2510, 2230 and 2190 plants/ha with the TE, TO, TB and NT treatments, respectively. Corn yields averaged 10 Mg/ha with the TE treatment compared to an average of 12.5 Mg/ha with the other treatments. Wheel traffic did not significantly affect average root density, but it restricted root proliferation. Equations were developed relating corn root density to distance from plant row and to depth.
Download or read book Soil Compaction in Crop Production written by B.D. Soane and published by Elsevier. This book was released on 2013-10-22 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global review of the mechanisms, incidence and control measures related to the problems of soil compaction in agriculture, forestry and other cropping systems. Among the disciplines which relate to this subject are soil physics, soil mechanics, vehicle mechanics, agricultural engineering, plant physiology, agronomy, pedology, climatology and economics. The volume will be of great value to soil scientists, agricultural engineers, and all those involved with irrigation, drainage and tillage. It will help to facilitate the exchange of information on current work throughout the world, as well as to promote scientific understanding and stimulate the development, evaluation and adoption of practical solutions to these widespread and urgent problems.
Download or read book Soil Compaction written by Jodi DeJong-Hughes and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of Advances in Soil Science is to provide a forum for leading scientists to analyze and summarize the available scientific information on a subject, assessing its importance and identifying additional research needs. A wide array of subjects has been addressed by authors from many countries in the initial ten volumes of the series. The quick acceptance of the series by both authors and readers has been very gratifying and confirms our perception that a need did exist for a medium to fill the gap between the scientific journals and the comprehensive reference books. This volume is the first of the series devoted entirely to a single topic soil degradation. Future volumes will include both single-topic volumes as well as volumes containing reviews of different topics of soil science, as in the case of the first ten volumes. There are increasing concern and attention about managing natural re sources, particularly soil and water. Soil degradation is clearly one of the most pressing problems facing mankind. Although the spotlight regarding soil degradation in recent years has focused on Africa, concern about the degradation of soil and water resources is worldwide. The widespread con cern about global environmental change is also being linked to severe problems of soil degradation. Therefore, we are indeed pleased that the first volume of the series devoted to a single topic addresses such an impor tant issue. The current volume is also the first of the series involving a guest editor.
Download or read book Soil Compaction written by Richard Wolkowski and published by . This book was released on 2008 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Compaction and Corn Yield Reduction from Timing and Loading Rates of Field Traffic written by James Ellery Capron, 1944- and published by . This book was released on 1993 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlled Traffic in Corn with Three Tillage Systems written by David Brian Nashold and published by . This book was released on 1989 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dairy Slurry in Corn Based Systems written by Gregg R. Sanford and published by . This book was released on 2007 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Technology on U S Cropland and Rangeland Productivity August 1982 written by and published by DIANE Publishing. This book was released on with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Technology on U S Cropland and Rangeland Productivity written by and published by . This book was released on 1982 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cone Penetration Testing in Geotechnical Practice written by T. Lunne and published by CRC Press. This book was released on 2002-09-11 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides guidance on the specification, performance, use and interpretation of the Electric Cone Penetration Test (CPU), and in particular the Cone Penetration Test with pore pressure measurement (CPTU) commonly referred to as the "piezocone test".
Download or read book Soil Compaction Due to Heavy Agricultural Wheel Traffic written by Michael Gysi and published by . This book was released on 2000 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Soil Disturbance and Compaction in Wildland Management written by Earl B. Alexander and published by . This book was released on 1985 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Cutting and Tillage written by E. McKyes and published by Elsevier. This book was released on 1985-10-01 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: After giving a brief history of tillage practices and implements used throughout the world dating back to ancient times, this book goes on to describe the basic soil mechanics techniques needed to calculate the forces developed in soil by simple-shaped cutting tools. The methods of measuring soil mechanical properties, water pressure in soil and shear rate effects are touched upon. A review is given of two and three dimensional soil cutting mathematical mechanics models to predict soil cutting forces and soil volumes disturbed by cutting and tillage tools, as well as the state-of-the-art of soil loosening, structural rearrangement and plant growth as affected by tillage tools. The author also includes an introduction to the analysis of traction machines. There are many numerical examples of mechanical analyses and predictions worked out in the various sections of the book as well as numerous unsolved problems at the end of a number of the chapters.Written in a textbook style, this monograph is ideal for anyone wanting to learn modern techniques for the mechanical description of soil cutting and tillage forces and soil volumes disturbed. It also provides a reference for analytical formulae and calculated force forces. It will be of interest to universities and colleges worldwide which have Agricultural Engineering Programs, Civil and Mechanical Engineering schools which specialize in soil mechanics and construction machinery as well as to research stations worldwide with interests in soil tillage, soil physics etc.
Download or read book Harvested Forages written by Rodney Dwain Horrocks and published by Academic Press. This book was released on 1999-07-01 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harvested Forages deals with the subject of food for domestic animal feeding. Such food is called "forage" and includes things like alfalfa and other plants usually referred to as "hay." Topics include the ways that this forage is produced, how it is harvested, and ways that it should be stored. Other issues that are dealt with include various criteria and measurement procedures for assessing forage nutritive quality, potential health hazards associated with particular plants and plant toxins, and various issues of plant growth, pest control, and soil fertility--among other topics. This book is essential for any institution with a strong program in range sciences, animal sciences, animal feeding and nutrition, and related programs. Synthesizes and summarizes a vast and widely dispersed literature in animal science Serves as a reference for managers of harvested forages as well as all those involved with the forage production industry
