The Effects Of Reduced Tillage On Phosphate Transport From Agricultural Land

Author : Terry J. Logan,John R. Adams
Publisher : Unknown
Page : 36 pages
File Size : 46,9 Mb
Release : 1981
Category : Agricultural pollution
ISBN : MINN:31951D01692180L

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The Effects of Reduced Tillage on Phosphate Transport from Agricultural Land by Terry J. Logan,John R. Adams Pdf

This report examines and summarizes published and some unpublished data on the relative effects of conservation tillage (primarily no till) versus conventional tillage on surface runoff, soil loss and phosphorus loss. The data show that conservation tillage increased runoff relative to conventional tillage on soils with poor internal drainage and reduced runoff on more permeable soils. Conservation tillage greatly reduced soil loss and total particulate P (TPP) loss, but the percent reduction of TPP was only 89% of the percent reduction in soil loss. Conservation tillage increased soluble P (OP) losses in all cases. Conservation tillage was less effective in reducing plant-available (Bray P1) phosphate than in reducing TPP. P fertilization in excess of crop needs increased soluble P losses in runoff, and the effect of P fertilization on soluble P losses was greatest with no till because of P accumulation at the surface. (Author).

Author : Clive A. Edwards
Publisher : CRC Press
Page : 718 pages
File Size : 40,8 Mb
Release : 2020-11-25
Category : Nature
ISBN : 9781000162271

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Sustainable Agricultural Systems by Clive A. Edwards Pdf

A unique look at how the adoption of sustainable farming methods is being pursued throughout the world. This comprehensive book provides clear insight into research and education needs and the many points of view that come to bear on the issue of sustainability. Essential for agricultural leaders in research, education, conservation, policy making, and anyone else interested in creating an economically and environmentally sustainable agriculture worldwide.

Author : David B. Baker
Publisher : Unknown
Page : 248 pages
File Size : 52,8 Mb
Release : 1988
Category : Agricultural pollution
ISBN : UCR:31210008940122

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Sediment, Nutrient and Pesticide Transport in Selected Lower Great Lakes Tributaries by David B. Baker Pdf

Author : M.R. Carter
Publisher : CRC Press
Page : 406 pages
File Size : 48,5 Mb
Release : 2017-09-08
Category : Technology & Engineering
ISBN : 9781351367271

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Conservation Tillage in Temperate Agroecosystems by M.R. Carter Pdf

In this invaluable book, leading agronomic researchers provide in-depth reviews of present conservation tillage practices in a wide variety of temperate agroecosystems. Each chapter characterizes how conservation tillage has been developed and adapted or modified to fit specific environments, with the chapters divided into the following climate regions: Cool Humid, Cool Humid to Warm Humid, Warm Humid, and Sub-Humid to Semi-Arid Continental. Each chapter also discusses important topics such as weed problems, crop rotation, fertilizer requirements, soil properties and processes, soil erosion, soil chemistry, soil physics, and environmental issues. A perfect working reference, this resource provides a synthesis of existing research and practices and shows how soil, climatic, and biological constraints can be overcome or circumvented.

Author : Terry J Logan
Publisher : CRC Press
Page : 312 pages
File Size : 47,7 Mb
Release : 2018-01-18
Category : Technology & Engineering
ISBN : 9781351088527

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Effects Conservation Tillage On Ground Water Quality by Terry J Logan Pdf

Nowadays the environmental sustainability of the cropping systems is increasingly requested by the consumers. Conventional tillage practices, totally turning over the soil between the vineyard rows, may cause erosion due to rain as well as structure destruction of the soil in the long term. Conservation tillage is a soil management technique, poorly widespread in Sardinia, allowing cover cropping between vineyard rows. Furthermore, this technique makes the canopy development control of herbage possible by cutting it up during specific phenological phases. Conservation tillage usually involves direct benefits to farmers such as increasing soil fertility as well as reductionof tillage costs, soil erosion and carbon dioxide (CO2) emissions in the atmosphere. This long term trial, during at least five years aims to assess the conservation tillage impact on chemical-physical soil characteristics in comparison with traditional tillage by evaluating the change of organic matter, C.E.C. and availability of major plant nutrients in the soil and to estimate their probable rise. The field plots are located in a 35% slope condition vineyard, showing massive erosion problem and organic matter low content. A split/plot design with four replications was set up, with the comparison between conservation and traditional tillage apart as main plots. Moreover, the effects of two different irrigation levels were evaluated in the subplots of each main plot. At the beginning of the trial (2011) a pedological survey was made. Three soil profiles were described and sampled along the field slope and soil sampling in each plot were made both to characterize the soil and to find the zero point. The soil chemical and physical characteristics were monitored through a second soil sampling made at the end of 2013. Conservation tillage caused increasing organic matter content and C.E.C. values. As for major plant nutrients in soil, results were more uncertain. Grapevine yield and quality parameters did not show any negative effect when passing from conventional to conservation tillage techniques. The trial provided a preliminary positive evaluation of conservation tillage. However, more years are required to confirm this trend.

Author : Frank M. D'Itri
Publisher : CRC Press
Page : 400 pages
File Size : 54,8 Mb
Release : 2018-05-04
Category : Technology & Engineering
ISBN : 9781351079303

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A Systems Approach to Conservation Tillage by Frank M. D'Itri Pdf

This book describes concepts, value judgments and background information on the expanding conservation tillage practices in the United States and provides a technical appraisal of the state of the art. Still, much remains to be learned about the agronomic, agricultural engineering and environmental parameters; and it is hoped that the inormation herein presented will stimulate further research toward a more integrated apporach to conversation tillage practices.

Author : Anonim
Publisher : Unknown
Page : 534 pages
File Size : 43,7 Mb
Release : 1982
Category : Water
ISBN : OSU:32435015575657

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Lake Erie Wastewater Management Study by Anonim Pdf

Author : Terry J. Logan
Publisher : Unknown
Page : 40 pages
File Size : 47,5 Mb
Release : 1981
Category : Pesticides
ISBN : MINN:31951D003648066

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Pesticide Use in the Lake Erie Basin and the Impact of Accelerated Conservation Tillage on Pesticide Use and Runoff Losses by Terry J. Logan Pdf

A major shift from conventional tillage to conservation tillage will be required to reduce soil loss and diffuse sources of phosphorus in the Lake Erie drainage basin. This shift will require some changes in the kinds and amounts of pesticides used and may change the losses of these compounds in runoff. Alachlor, atrazine and butylate account for about 77% of the herbicide used in Indiana, Michigan and Ohio, and carbofuran, fonofos and terbufos represent about 86% of the insecticide use. Most of the pesticides in use in the basin today are relatively nonpersistent and have low mammalian and fish toxicities. A major shift to conservation tillage will increase use of paraquat and glyphosate herbicides and reduce the use of soil-incorporated materials such as butylate and trifluralin. About 1% of applied pesticide is lost in runoff, much of it in the first event after the compound is applied. Pesticide losses are reduced with increased surface cover, but this effect decreases with pesticides that are water-soluble and have only moderate to low affinity for soil particles. Losses of pesticides from agricultural land in the Lake Erie basin are not expected to measurably change with a shift to conservation tillage. (Author).

Author : Anonim
Publisher : Unknown
Page : 220 pages
File Size : 54,6 Mb
Release : 1981
Category : Science
ISBN : CORNELL:31924057177432

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Technical Abstract Bulletin by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 120 pages
File Size : 41,7 Mb
Release : 1981
Category : Watershed management
ISBN : MINN:31951D00297378B

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Watershed Handbook by Anonim Pdf

Author : Terry J. Logan
Publisher : Springer
Page : 320 pages
File Size : 45,8 Mb
Release : 1987-09
Category : Business & Economics
ISBN : UOM:39015012451798

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EFFECTS CONSERVATION TILLAGE ON GROUND WATER QUALITY by Terry J. Logan Pdf

Overview of conservation tillage systems in the united states. Effect of conservation tillage systems on soil physical, chemical, and biological processes. Effect of conservation tillage systems on fate and transport of applied pesticides and nitrogen fertilizers. Selected topics on conservation tillage systems.

Author : J.O. Nriagu,P.H. Moore
Publisher : Springer Science & Business Media
Page : 450 pages
File Size : 42,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642617362

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Phosphate Minerals by J.O. Nriagu,P.H. Moore Pdf

The literature on the geology, chemistry, and biochemistry of phosphorus generally takes its mineralogy for granted. The in cidental information on phosphate minerals given in these texts is often obsolescent and inaccurate. The few mineralogical texts that have dealt comprehensively with the phosphate minerals have now become outdated, and typically present the essential information in a manner unsuitable for nongeological readers. This volume is intended as a ready reference for workers who require good basic information on phosphate minerals or their synthetic equivalents. The topics covered should appeal to geologists and geochemists, lithologists, environmental scientists and engineers, chemists and biochemists who have any interest in the intricate world of phosphorus. The hard tissues of many vertebrates and the many pathological calcifications consist mostly of phosphate minerals. The precipita tion of these compounds also plays a major role in the ecological cycling of phosphorus, and occasionally even dominates the behavior of many trace metals in many geochemical and biolog ical systems. Indeed, many pegmatitic phosphate minerals have acquired some notoriety because of the rarer trace metals which they tend to accumulate. With the commercialization of phosphate fertilizers since the early part of the 19th century, phosphate minerals have assumed an important role in industrial chemistry and agriculture. Clearly, the study of phosphate minerals is important from the economic, agricultural, environmental and (human and animal) health viewpoint.

Author : Terry J. Logan
Publisher : Unknown
Page : 92 pages
File Size : 44,5 Mb
Release : 1979
Category : Maumee River Watershed (Ind. and Ohio)
ISBN : CORNELL:31924062814300

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The Maumee River Basin Pilot Watershed Study: Continued watershed monitoring (1981-1985) and rainulator study by Terry J. Logan Pdf

Author : Terry J. Logan,Robert Rettig
Publisher : Unknown
Page : 92 pages
File Size : 42,7 Mb
Release : 1991
Category : Water
ISBN : STANFORD:36105131835162

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The Maumee River Basin Pilot Watershed Study by Terry J. Logan,Robert Rettig Pdf

Author : Arthur J. Gold
Publisher : Unknown
Page : 348 pages
File Size : 45,5 Mb
Release : 1983
Category : Conservation tillage
ISBN : MSU:31293007027661

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Conservation Tillage by Arthur J. Gold Pdf