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Fixation And Release Of Potassium In Several Eastern Oklahoma Soils
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Book Synopsis Fixation and Release of Potassium in Several Eastern Oklahoma Soils by : John J. Micka
Download or read book Fixation and Release of Potassium in Several Eastern Oklahoma Soils written by John J. Micka and published by . This book was released on 1957 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Fixation and Release of Potassium in Five Eastern Oklahoma Soils by : John Jacob Micka
Download or read book The Fixation and Release of Potassium in Five Eastern Oklahoma Soils written by John Jacob Micka and published by . This book was released on 1954 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potassium Fixation and Release in Several Agricultural Soils of Georgia by : Marcus Michael Eichhorn
Download or read book Potassium Fixation and Release in Several Agricultural Soils of Georgia written by Marcus Michael Eichhorn and published by . This book was released on 1963 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1957 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Native Fixed Ammonium and Fixation of Applied Ammonium in Several Wisconsin Soils by : Leo Marcellus Walsh
Download or read book Native Fixed Ammonium and Fixation of Applied Ammonium in Several Wisconsin Soils written by Leo Marcellus Walsh and published by . This book was released on 1959 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relationships of Potassium Fixation and Release to the Clay Mineral Composition of Some Michigan Soils by : Samuel Lewis Cummings
Download or read book Relationships of Potassium Fixation and Release to the Clay Mineral Composition of Some Michigan Soils written by Samuel Lewis Cummings and published by . This book was released on 1959 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological & Agricultural Index by :
Download or read book Biological & Agricultural Index written by and published by . This book was released on 1986 with total page 2476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potassium Fixation and Release Characteristics of Soils by : Krishna Chandra Bisoy
Download or read book Potassium Fixation and Release Characteristics of Soils written by Krishna Chandra Bisoy and published by . This book was released on 1966 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potassium in Oklahoma Soils by : Horace James Harper
Download or read book Potassium in Oklahoma Soils written by Horace James Harper and published by . This book was released on 1950 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography of Soil Science, Fertilizers, and General Agronomy by : Commonwealth Bureau of Soils
Download or read book Bibliography of Soil Science, Fertilizers, and General Agronomy written by Commonwealth Bureau of Soils and published by . This book was released on 1960 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Fixation and Release of Soil Potassium by : Burton Clare Matthews
Download or read book The Fixation and Release of Soil Potassium written by Burton Clare Matthews and published by . This book was released on 1952 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fertility Characteristics of Oklahoma Soil Associations by : Roy M. Smith
Download or read book Fertility Characteristics of Oklahoma Soil Associations written by Roy M. Smith and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agricultural Index written by and published by . This book was released on 1960 with total page 1824 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report by : Oklahoma Agricultural Experiment Station
Download or read book Report written by Oklahoma Agricultural Experiment Station and published by . This book was released on 1954 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting the Availability of Potassium Through Fixation and Release in Soils of Diverse Mineralogical Composition by : Gordon Lawrence Rees
Download or read book Factors Affecting the Availability of Potassium Through Fixation and Release in Soils of Diverse Mineralogical Composition written by Gordon Lawrence Rees and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The management of soil potassium is complicated by sorption and release of K by soil minerals, with fixation of K by vermiculite removing it from the pool of readily-available exchangeable K. Several laboratory methods have been developed to characterize different pools of soil potassium, including ammonium acetate extraction of exchangeable K (XK), sodium tetraphenylboron extraction of exchangeable and some nonexchangeable K (TPB-K), and a method to estimate the potential of soils to fix K (Kfix). In order to understand the relationship of these methods to each other and to K uptake by plants, we undertook a series of experiments to evaluate the effect of K concentration, incubation time, soil moisture content, and mineralogy on soil K pools. Additions of K equal to initially measured Kfix values only partially reduced K fixation, and increased XK and TPB-K by less than the amount of K added, indicating that some K was fixed strongly enough to be removed from the nominally plant-available pool. Duration of incubation with K from 1 to 16 days did not significantly impact K fixation or availability as measured by these methods, indicating that fixation reactions took place within the first 24 hours. Incremental additions of potassium up to an amount equal to the cation exchange capacity resulted in increasing amounts of K fixed. For some soils, a plateau was reached indicating a maximum level of K fixation, but for other soils it is unclear if a maximum was achieved. Recovery of K by the TPB-K method was roughly twice as efficient as by the XK method. Approximately 50% of fixed K was plant-available nonexchangeable K (PANK), meaning it was recovered by the TPB-K method but not by the XK method. A single air-drying event, relative to soils maintained at field-moist water content, resulted in an increase in Kfix for all K-fixing soils by an average of 55 mg kg−1, but the change in Kfix for non-K-fixing soils was not consistent. The change in Kfix was not correlated with XK values. Changes in XK with drying were less than 20 mg kg−1 for most samples, with XK increasing for most K-fixing and low-XK soils, with less consistency for high-XK soils. Multiple cycles of wetting and drying did not result in further changes in soil K measurements. In a greenhouse pot study, K uptake by annual ryegrass (Lolium multiflorum) was best correlated with TPB-K (r=0.8966), and yield was best correlated with total K by aqua regia digestion (r=0.7465) followed by TPB-K (r=0.6692). The critical value for yield response determined by the TPB-K method was most successful in predicting significant responses to increased K rates. The XK method also performed well in this respect. K fixation by one soil resulted in reduced uptake of K, and in yield responses to higher K rates than predicted by critical values for all methods. For other soils, the effect of K fixation potential was unclear. Atomic force microscopy of clay grains from selected K-fixing soils and standard clays revealed complex surface morphology for most soils which made it impossible to delineate changes in layer spacing with K sorption or release. Nearly-flat surfaces and stacks of relatively few layers in smectite clays were more conducive to this analysis. For both montmorillonite and beidellite standards, layers collapsed with displacement of Na+ by K+, and re-expanded after extraction with a TPB solution. No zones of preferential K fixation or release were observed.
Book Synopsis A Comparison of Different Chemical Methods in Evaluating Available Potassium in Oklahoma Soils by : Kenneth Eugene Hughes
Download or read book A Comparison of Different Chemical Methods in Evaluating Available Potassium in Oklahoma Soils written by Kenneth Eugene Hughes and published by . This book was released on 1953 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commercial Fertilizer and Plant Food Industry by :
Download or read book Commercial Fertilizer and Plant Food Industry written by and published by . This book was released on 1957 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: