Download or read book Pedogenetic and Induced Compaction in Agricultural Soils written by G. R. Saini and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compaction of Agricultural Soils written by Kenneth Kirkland Barnes and published by . This book was released on 1971 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The soil compaction process; Methods of measuring soil compaction; Forces causing soil compaction; Compaction as it affects soil conditions; Soil conditions as they affect plant establishment, root development and yield; Effect of tillage on soil compaction; Management factors and natural forces as related to compaction; Economic assessment of soil compaction.

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 and the Compactibility of Cultivated Agricultural Soils written by Austin Charles Job Sichinga and published by . This book was released on 1989 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annotated Bibliography on Soil Compaction written by American Society of Agricultural Engineers. Soil Compaction Committee and published by . This book was released on 1958 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Machinery induced Compaction of Arable Soils written by Inge Håkansson and published by . This book was released on 2004 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Compaction on Forest and Range Lands written by Howard William Lull and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to review available information on soil compaction as related to soil and water conservation on forest and range lands.

Download or read book Subsoil Compaction written by Rainer Horn and published by . This book was released on 2000 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teory; Modelling; Properties; Distribution; Methods.

Download or read book Wheel induced Soil Compaction written by J. T. Douglas and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Compaction Caused by Heavy Agricultural Machinery written by W. Gruber and published by . This book was released on 1991 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alleviation of Compaction on Fine textured Michigan Soils written by Bradley Scott Johnson and published by . This book was released on 1987 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Root induced Compaction and Its Effects on Soil Microstructure and Soil Hydraulic Properties Using X ray Micro tomography and Numerical Simulations written by Jazmín Estefanía Aravena Ibáñez and published by . This book was released on 2011 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is a challenging environment where resources, such as water, nutrients and air, are scarce and patchy. Plants and soil microorganisms have limited ability to move toward nutrient-enriched zones, compared with animals. Plants and roots have evolved to adapt and influence their physical environment as a way to create favorable conditions for its development. On the other hand, the structure of the soil controls its ability to receive, store and transmit water, to cycle carbon and nutrients, and to disperse anthropogenic and natural contaminants. As roots grow, soil structure changes; the pressure exerted produces a decrease in soil porosity and an increase in soil density, creating complex soil-root interactions. The scales of interest in the study of soil structure range from angstroms to kilometers. To study processes such as plant growth, root penetration, storage of water, and movement of nutrients, the most relevant scales range from microns to centimeters. Recent advances in X-ray micro-tomography (XMT) imaging have allowed the study of rhizosphere on spatial scale hitherto unreachable. This dissertation investigates utilization of XMT to study root-induced compaction on soil micro-structure and its effect on soil hydraulic properties. The current state of the art in soil-plant-root interactions using XMT is presented. Techniques to improve sensitivity of XMT images when roots are being scanned, are discussed. Feasibility of various segmentation techniques and examples of their use to quantify soil properties are addressed. XMT data quantification is then used in the study to feed numerical flow models. At bulk-scale, soil compaction has been associated with decrease in porosity and hydraulic conductivity and thus a reduction in soil productivity and fertility. However, at the aggregate scale, this study shows that natural root-induced compaction increases contact areas between aggregates, which may lead to an increase in unsaturated hydraulic conductivity of the soil adjacent to the roots. An analytical model to estimate the effect aggregate compaction on its effective hydraulic conductivity was developed. It was found that the effective hydraulic conductivity of a pair of aggregates, undergoing uniaxial stress, increased following a non-linear relationship as inter-aggregate contact area increased. Additionally, this study presents numerical modeling using actual XMT images of aggregated soil around a root surrogate to demonstrate how root-induced deformation increases unsaturated water flow towards the root, providing insight into the growth and water uptake patterns of roots in natural soils. Finally, this study presents a novel procedure that allowed coupling mechanical induced compaction with fluid flow simulation to model root-induced compaction in the rhizosphere. XMT images were used to describe in detail the rhizosphere microstructure. Then, finite element simulations were used to study the effect of an expanding root on root water uptake. The effect of increase aggregate connectivity, increase in effective hydraulic conductivity, root-soil contact area, and increase in local and global hydraulic gradient were evaluated. These results contribute to a better understanding of soil-waterroot interactions.

Download or read book Compaction of Soil by Agricultural Equipment written by William J. Chancellor and published by . This book was released on 1977 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reduction of traffic induced soil compaction written by J. H. Taylor and published by . This book was released on 1992 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Effects of Compaction of Agricultural Soils on Soil Fauna written by U. Aritajat and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Compaction Due to Increased Machinery Intensity in Agricultural Production written by Song√ol G√orsoy and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In modern agriculture, most of the field operations from sowing to harvesting are done mechanically by using heavy agriculture machines. However, the loads from these heavy machines may induce stresses exceeding soil strength causing soil compaction. Nowadays, soil compaction is considered as a serious form of soil degradation, which may have serious economics and environmental consequences in world agriculture because of its effects on soil structure, plant growth and environmental events. Vehicle load, inflation pressure, number of passes, stress on the soil, and soil properties (e.g. soil water content, soil texture, soil strength, soil bulk density) play an important role on soil compaction. This chapter reviews the works related to soil compaction in agricultural areas. Also, it discusses the nature and causes of soil compaction, the effects of the compaction on soil properties, environment and plant growth, and the possible solutions suggested in the literature.