Umsatz und Wirkung von Harnstoff‐Dicyandiamid‐ sowie Ammonsulfat‐Dicyandiamid‐Produkten zu Weidelgras und Reis

Amberger, A.; Gutser, R.

doi:10.1002/jpln.19781410506

Cited by 22 publications

(4 citation statements)

References 11 publications

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“…In a pot trial to test combination compounds of uredDCD resp. ammonium sulfate/DCD, losses of N by denitrification were higher with longer preincubation periods, consequently resulting in lower nitrogen uptake by plants (Amberger and Gutser 1978). With DCD, the denitrification losses decreased considerably and N uptake increased (table 11).…”

Section: Seed Quantity: 205 Kglhamentioning

confidence: 99%

Potentials of nitrification inhibitors in modern N‐fertilizer management

Amberger

1986

J Plant Nutrition & Soil

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ZusammenfassungModern agricultural practices require a new concept of N-fertilizer management in order to optimize N-utilization and avoid N-losses. Nitrification inhibitors or ,,N-stabilizers" fit very good into this conception.Dicyandiamide (DCD) is an efficient nitrification inhibitor and blocks the first step of nitrification for 1-3 months (depending on temperature). This effect is bacteriostatic (not bactericidal) and does not affect other (esp. C-heterotrophic) soil microorganisms (,,biological activity"). DCD is a non-toxic, water soluble compound and will be degraded to COz, NH3 and H2O without any residues.There are various possibilities to use DCD: addition to liquid manure temporarily prevents oxidation of ammonium nitrogen e.g. of slurry or waste water from potato starch production.In combination with inorganic fertilizers like ammonium sulfate or urea (with 10 % of total-N) it enables the farmer to control NH4-supply to crop plants in certain stages of growth and to gain certain operational advantages by less frequently split applications of N especially on sand and rendzina soils.Thus, the systematic use of nitrification inhibitors not only represents a progress in agricultural technique but also helps to substantially reduce risks concerning pollution of surface and ground waters that are sometimes inevitable consequences of agricultural production. M6glichkeiten von Nitriflkationshemmatoffen in der modernen StickstoffdiingungModerne Landbewirtschaftungsmethoden erfordern ein neues Dungungskonzept rnit dem Ziel, die Stickstoffausnutzung zu optimieren und N-Verluste zu verhindern. Nitrifikationshemmstoffe oder ,,N-Stabilisatoren" passen gut in dieses Konzept. Dicyandiamid (DCD) ist ein wirksamer Nitrifikationshemmstoff; er blockiert den ersten Schritt der Nitrifikation fiir die Dauer von 1-3 Monaten (je nach Temperatur). Dieser Effekt ist bakteriostatisch (nicht bakterizid) und beeintrachtigt nicht andere (vor allem C-heterotrophe) Bodenorganismen (,,biologische Aktivitat"). DCD ist eine nicht toxische, wasserlasliche Verbindung, die letztlich zu C02, NH3 und HzO abgebaut wird ohne Ruckstande. Es gibt verschiedene Moglichkeiten ftir den Einsatz von DCD:Giille oder Abwasser aus der Kartoffelstlrkeproduktion (,,Kartoffelfruchtwasser") zugesetzt, verhindert es die Oxidation des Ammoniumstickstoffs fur eine gewisse Zeit.In Kombination mit anorganischen Diingemitteln wie Ammoniumsulfat oder Hamstoff (mit 10% vom Ges.-N) ist es moglich, die NHrN-Anlieferung zu Kulturpflanzen in bestimmten Entwicklungsabschnitten zu regulieren. Damit verbunden sind gewisse arbeitswirtschaftliche Vorteile gegeniiber iiblichen mehreren Teilgaben mit mineralischem Stickstoff vor allem auf Sanden und Rendzina-Boden. CW4-3263/861040%@%9 $ 02.50/0 0 VCH Verlagsgcsellnehaft mbH, D-6940 Wcinheim, 1986 470 Amberger Z. Pflanzenernaehr. Bodenk. Die Anwendung von Nitrifikationshemmstoffen stellt somit nicht nur einen Fortschritt dar in agrotechnischer Hinsicht , sondern tragt auch wesentlich dazu bei, mogliche Risiken einer Belastung...

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Section: Seed Quantity: 205 Kglhamentioning

confidence: 99%

Potentials of nitrification inhibitors in modern N‐fertilizer management

Amberger

1986

J Plant Nutrition & Soil

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“…In recent years, there has been considerable interest in DCD as a means of increasing the efficiency of nitrogen applied to different crops (Amberger & Gutser, 1978;Amberger, 1981;Rieder & Michaud, 1981). Rieder (1981) reported that in Italy application of DCD with urea 7-21 days before flooding rice fields considerably increased the yield of rice as compared with urea not treated with DCD.…”

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confidence: 99%

Studies on the nitrification inhibitor, dicyandiamide (DCD), for increasing the efficiency of nitrogen applied to rice

Singh

Prasad

1985

J. Agric. Sci.

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SummaryA field experiment, made during the rainy seasons oof 1982 and 1983 at the Indian Agricultural Research Institute, New Delhi, studied the effects of blending urea with dicyandiamide (DCD) on the yield and yield components of rice. DCD-blended urea was as effective as neem-cake-coated urea in respect of yield components as well as grain and straw yield of rice and when all the nitrogen was applied 10 days after transplanting both the materials produced significantly more grain and straw than prilled urea. Urea super granules (USG) were superior to DCD-blended, as well as neem-coated, urea.

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“…Dicyandiamide (DCD) (obtained from SKW Trostberg, West Germany, as Didin®) is an organic N compound [H 2 NC(NH)NHCN] which inhibits the cytochrome oxidase involved in NHt oxidation by Nitrosomonas bacteria. Applications of 10 mg DCD kg-1 soil have been shown to inhibit nitrification up to 40 days at 20°C (Amberger and Vilsmeier, 1979). Amberger and Gutser ( 1979) reported inhibition of nitrification of urea and NHiS0 4 h for 10 weeks, with 20% ofthe N as DCD.…”

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confidence: 99%

“…Applications of 10 mg DCD kg-1 soil have been shown to inhibit nitrification up to 40 days at 20°C (Amberger and Vilsmeier, 1979). Amberger and Gutser ( 1979) reported inhibition of nitrification of urea and NHiS0 4 h for 10 weeks, with 20% ofthe N as DCD. At a DCD rate of2.5% of total fertilizer N, Jurkowska (1971) measured significant reductions in N03 concentration in spinach (Spinacia oleracea L.) leaves.…”

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Evaluation of Dicyandiamide‐Amended Fertilizers on Kentucky Bluegrass¹

Mosdell¹,

Daniel²,

Freeborg

1986

Agronomy Journal

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Dicyandiamide (DCD), a nitrification inhibitor, is a 67% N compound of low volatility that can be incorporated into fertilizer granules. Urea, ammonium sulfate (AS), and a complete fertilizer (COMP), all amended with DCD so that I 0% of the N was derived from DCD, were evaluated in field studies at West Lafayette, IN, on 'Wabash' Kentucky bluegrass (Poa pratensis L.) grown on Toronto silt loam (fine-silty, mixed, mesic Udollic Ochraqualfs). Urea, AS, sulfur-coated urea (SCU), and isobutylidene diurea (IBDU) were included for comparison. Equal treatments were applied two or four times per season to provide 196 kg N ha-•yr-•. Clipping yields in response to DCDamended fertilizers were similar to those of urea and AS at both N regimes. Initial response to DCD-amended fertilizers was rapid and response to residual N shorter than that of IBDU and SCU; however, recovery of applied N in the tissue was similar between DCD fertilizers and IBDU, and SCU. Averaged over 3-yr, recovery of N ranged from 41.1% for IBDU to 36.4% for AS at 2 X 98 kg N ha-•, and 39.0% for COMP + DCD to 32.6% for AS at 4 X 49 kg N ha-1 , respectively. Turf quality of plots receiving IBDU was superior to all N sources. Measurements 24 days after a 15 November application in 1984 indicated DCD inhibited N0.3 formation at the 2 X 98 kg N ha-• rate (14.6 kg DCD ha-1 ). Fall-applied DCD did not influence soil NHt and N03 concentrations at 0 to 0.20 m the next spring. The short period of effectiveness of DCD would seldom warrant its use as a nitrification inhibitor in turf.Additional index words: Isobutylidene diurea, Sulfur-coated urea, Soil inorganic N, Nitrogen recovery, Poa pratensis L. W ITH the ~ncreasing cost of N fertilizers and the potential for N03 pollution of lakes and groundwater, efficiency inN management is extremely important. Applications of slow-release N tend to minimize leaching losses by reducing concentration of NO) in the soil solution. Bredakis and Steckal (1963) reported N03 release in this order: (NH 4 hS0 4 = urea > sewage sludge > ureaformaldehyde (UF). Residual N was found to be greater with sulfur-coated urea (SCU) applications, however, leaching losses of N03 were less than 11% of a 400 kg N ha-1 application for all soluble and insoluble N sources (Allen et al., 1978). Others have reported higher residual N with SCU than isobutylidene diurea (IBDU); however, split applications of these materials were necessary to produce 1

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Umsatz und Wirkung von Harnstoff‐Dicyandiamid‐ sowie Ammonsulfat‐Dicyandiamid‐Produkten zu Weidelgras und Reis

Abstract: In der vorliegenden

Cited by 22 publications

References 11 publications

Potentials of nitrification inhibitors in modern N‐fertilizer management

Potentials of nitrification inhibitors in modern N‐fertilizer management

Studies on the nitrification inhibitor, dicyandiamide (DCD), for increasing the efficiency of nitrogen applied to rice

Evaluation of Dicyandiamide‐Amended Fertilizers on Kentucky Bluegrass¹

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Umsatz und Wirkung von Harnstoff‐Dicyandiamid‐ sowie Ammonsulfat‐Dicyandiamid‐Produkten zu Weidelgras und Reis

Abstract: In der vorliegenden

Cited by 22 publications

References 11 publications

Potentials of nitrification inhibitors in modern N‐fertilizer management

Potentials of nitrification inhibitors in modern N‐fertilizer management

Studies on the nitrification inhibitor, dicyandiamide (DCD), for increasing the efficiency of nitrogen applied to rice

Evaluation of Dicyandiamide‐Amended Fertilizers on Kentucky Bluegrass1

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Evaluation of Dicyandiamide‐Amended Fertilizers on Kentucky Bluegrass¹