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Author : Wenceslau J. Goedert
Publisher :
ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.:/5 (89 download)
Download or read book Cation Equilibria in Soils of Rio Grande Do Sul, Brazil written by Wenceslau J. Goedert and published by . This book was released on 1973 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joao Mielniczuk
Publisher :
ISBN 13 :
Total Pages : 322 pages
Book Rating : 4.:/5 (89 download)
Download or read book Potassium, Calcium, Magnesium and Manganese Equilibria in Soils and Their Uptake by Plants written by Joao Mielniczuk and published by . This book was released on 1973 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francisco Ilton de Oliveira Morais
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.3/5 (121 download)
Download or read book Charge Characteristics and Ion Exchange Equilibria in Soils from the Humid Tropics of Brasil written by Francisco Ilton de Oliveira Morais and published by . This book was released on 1975 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the distribution of electric charges in the A and B horizons of some Oxisols, Alfisols and a Mollisol from Brasil was made by direct measurement of retention of ions in the presence of varying electrolyte concentration. Sample of an Oxisol, Ultisol, and an Alfisol were also used for ion-exchange studies by means of a saturation-displacement procedure. With the exception of the Mollisol, where the surface potential could be visualized as being of the variable type, the electrochemical behavior of the soils was found to be similar to that of the constant potential systens ub which the surface potential is determined by H+ and oH- ions in the equilibrium solution; hence charge distribution varied substantially with pH and electrolyte concentration. The concentration effect was not as pronounced as the pH effect and in some cases was not statistically significant. Direct measurement of adsorption of ions from MgSO4, MgC12, K2SO4, KC1, and Nac1 showed that the nature and valence of the counter ion also influenced the magnitude of the eletric charges on the soil particles. However, with respect to K the changes in charge were due to anion effects not cation effects, suggesting a strong affinity of K for the soil materials. The ZPC of the soils determined by plotting the net charges against pH varied from 1.2 to 3.4 in the A horizons and from 4.0 to 6.1 in the B horizons. lThe surface horizons of the soils were, in general, net negatively charged at or near their field pH. This fact was found to be ...
Author :
Publisher : Elsevier
ISBN 13 : 0080524311
Total Pages : 333 pages
Book Rating : 4.0/5 (85 download)
Download or read book Advances in Agronomy written by and published by Elsevier. This book was released on 1999-05-24 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Agronomy continues to be recognized as a leading reference and a first-rate source of the latest and best research in agronomy. As always, the topics covered are varied and exemplary of the panoply of subject matter dealt with by this long-running serial. Volume 67 contains four comprehensive and timely reviews on topics in the crop and soil sciences. Chapter 1 addresses one of the most active areas in agronomic research--precision agriculture. Chapter 2 is a thoughtful review on surface charge and solute interactions in soils. Chapter 3 thoroughly covers advances in the use of molecular genetics to enhance abiotic/edaphic stress resistance in turfgrass. Chapter 4 is a useful review on a topic that is of great interest to agronomists--allelopathy.
Author : Abu Dardak
Publisher :
ISBN 13 :
Total Pages : 478 pages
Book Rating : 4.:/5 (89 download)
Download or read book Soil Potassium Fractionation by Successive Extractions written by Abu Dardak and published by . This book was released on 1977 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 822 pages
Book Rating : 4.E/5 ( download)
Download or read book Journal of South Pacific Agriculture written by and published by . This book was released on 1992 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George D. Bailey
Publisher : C.A.B. International
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bibliography of Soil Taxonomy, 1960-1979 written by George D. Bailey and published by C.A.B. International. This book was released on 1987 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Ukponmwan Osahon Olotu
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.:/5 (89 download)
Download or read book Use of the SrCl2 Method for Predicting Nutrient Availability and Estimating Quantity and Capacity Factors written by Michael Ukponmwan Osahon Olotu and published by . This book was released on 1978 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sirio Wiethölter
Publisher :
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.:/5 (89 download)
Download or read book Predicting Potassium Uptake by Corn in the Field Using the Strontium Nitrate Soil Testing Method and a Diffusion-controlled Uptake Model written by Sirio Wiethölter and published by . This book was released on 1983 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Shannon Whitney
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.E/5 ( download)
Download or read book Effect of Soil-water Ratio on Cation Equilibria in Soils written by Robert Shannon Whitney and published by . This book was released on 1939 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : University Microfilms International
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.0/5 ( download)
Download or read book Agriculture & Agronomy written by University Microfilms International and published by . This book was released on 1977 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. J. T. Norman
Publisher : Cambridge University Press
ISBN 13 : 9780521422642
Total Pages : 442 pages
Book Rating : 4.4/5 (226 download)
Download or read book The Ecology of Tropical Food Crops written by M. J. T. Norman and published by Cambridge University Press. This book was released on 1995-05-18 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Retaining the successful formula of the first edition while placing additional emphasis on tropical environmental conservation, this new updated edition considers the response of tropical food crops to environmental factors such as climate, soil and farming system.
Author : Craig Roger Simson
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (89 download)
Download or read book Effect of Varying Ca:Mg Ratios on Yield and Composition of Corn (Zea Mays) and Alfalfa (Medicago Sativa) written by Craig Roger Simson and published by . This book was released on 1976 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.X/5 (6 download)
Download or read book Australian Journal of Soil Research written by and published by . This book was released on 2005 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mahgoub Eltayeb Abdel-Hafeez
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (89 download)
Download or read book Chemical Fractionation of Soil Magnesium written by Mahgoub Eltayeb Abdel-Hafeez and published by . This book was released on 1975 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 598 pages
Book Rating : 4.X/5 (4 download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1985-07 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 642 pages
Book Rating : 4.F/5 ( download)
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1972 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
