New PDF release: Application of Electro-Ultrafiltration (EUF) in Agricultural

By K. Németh (auth.), K. Németh (eds.)

ISBN-10: 9024726417

ISBN-13: 9789024726417

ISBN-10: 9400975597

ISBN-13: 9789400975590

The Symposium used to be geared up by way of the Hungarian Ministry of Agriculture and the significant examine Institute for Chemistry of the Hungarian Academy of Sciences. This onerous activity was once coordinated through Dr. Varju to whom I desire to exhibit my appreciation for his whole-hearted information. After the Symposium the individuals had the chance to go to the vineyards and cellars of the 'Balatonboglar' kingdom preserving which proved of significant curiosity. the 1st foreign EUF Symposium owes its luck to the wonderful cooperation among the Biintehof Agricultural learn Station and the Hungarian Ministry of Agriculture, together with the crucial study Institute for Chemistry of the Hungarian Academy of Sciences. the target of the Symposium was once to offer the 1st effects and event won with the EUF method, in order that the papers added are just a survey of the present-day kingdom of information. the majority of the paintings of modifying, together with the choice of the articles, fell on Prof. Dr. van Diest, Wageningen, for whose worthy recommendation and untiring efforts I desire to list my unique thank you. a few of the papers provided on the Symposium have already been released in other places and they're going to no longer seem during this issue.

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Additional info for Application of Electro-Ultrafiltration (EUF) in Agricultural Production: Proceedings of the First International Symposium on the Application of Electro-Ultrafiltration in Agricultural Production, organized by the Hungarian Ministry of Agriculture and the

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Agron. 31,155-186. Schuller H, Reichard Th und Nemeth K 1975 Beziehungen zwischen P-Dungung, Ertrag, PEntzug und Methoden der Bodenuntersuchung. Landwirtsch. Forsch. 28,147-157. GRIMME Biintehof Agricultural Research Station Hannover, Federal Republic of Germany Key words Buffer power Clay content K desorption Summary The EUF method differs from other soil testing methods in that it not only yields extractable quantities of nutrients but also provides information on the rates with which these quantities are desorbed when an external force is applied.

These EUF values obtained within 30-35 min lend themselves well for characterizing the Ca and K reserves. There appears to be no need to extend the extraction for another 5 min. This reproducibility of the EUF-P values at 80D C D D 33 REPRODUCIBILITY OF EUF NUTRIENT CONTENTS within 30-35 min is not as good as for the EUF-ea, EUF-K and EUF-Na values. 3% calculated for all samples investigated can, however, be considered as satisfactory. This value is relatively high due to the fact that the quantities of P in this EUF fraction are generally low.

The new procedure for the rapid determination of EUF-extractable N has considerable advantages for making fertilizer recommendations in agricultural practice. Next to determinations of the nutrients Ca, Mg, Na, K, N0 3 , P, S, B, Mn etc. by routine analysis, it is now possible to also measure the sum of the EUF-N fractions rapidly and with precision, so that these results can be taken into account when fertilizer recommendations have to be made. DETERMINATION OF EUF-N AND EUF-B 66 References 2 3 4 5 Kutscha-Lissberg P and Missbach M 1981 Vollautomatische Bestimmung vom gesamten oxidierbaren Stickstoffin Bodenextrakten.

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Application of Electro-Ultrafiltration (EUF) in Agricultural Production: Proceedings of the First International Symposium on the Application of Electro-Ultrafiltration in Agricultural Production, organized by the Hungarian Ministry of Agriculture and the by K. Németh (auth.), K. Németh (eds.)


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