Nitrogen mineralization dynamics of different valuable organic amendments commonly used in agriculture

Masunga, Raphael Habai; Uzokwe, Veronica N.E.; Mlay, Peter Deusdedit; Odeh, Inakwu O. A.; Singh, A. K.; Buchan, David; Neve, Stefaan De

doi:10.1016/j.apsoil.2016.01.006

Cited by 217 publications

(126 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The behavior of N MN concentration observed in Figure 1 is similar to that reported by Laos et al (2000), Mohanty et al (2013) andSan Martín et al (2016), who observed a steady increase in N MN concentration with mild lows between weeks. These results also were similar in all treatments to the results of Masunga et al (2016) using different amendments used in agriculture from animal and green origin.…”

Section: Nitrogen Mineralizationsupporting

confidence: 74%

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Fernández¹,

Stolpe²,

Celis³

et al. 2017

Chil. j. agric. res.

View full text Add to dashboard Cite

In thermoelectric industry, synthetic gypsum and coal ash are generated as industrial by-products. The objective of this work was to evaluate the effect of different mixtures of synthetic gypsum and coal ash on N mineralization in an Alfisol. Nitrogen mineralization was evaluated by soil incubations under controlled conditions and potential mineralization using the nonlinear first order kinetics model Nm t = N 0 [1 -℮ (-kt) ], where Nm t is the mineral N accumulated at a specific time, N 0 is the potentially mineralizable N, k is the mineralization rate, and finally t is the incubation time. Treatments consisted of different mixtures of synthetic gypsum, coal ash and urea (M 1 : 50% synthetic gypsum, 50% coal ash, M 2 : 50% synthetic gypsum, 35% coal ash, 15% urea, M 3 : 45% synthetic gypsum; 40% coal ash, 15% urea, M 4 : 65% synthetic gypsum, 20% coal ash, 15% urea, M 5 : 55% synthetic gypsum, 30% coal ash, 15% urea). Each mixture was applied to the soil at 2 t ha ). Where the highest and lowest k were determined in M 5 (k = 0.44990) and M 3 (k = 0.04470), respectively. Mixtures of synthetic gypsum, coal ash and urea increased N mineralization over mixtures without urea. Respect N potential mineralization, in some cases N 0 and k values would respond more to the fit of the mathematical model employed than to the biological process.

show abstract

Section: Nitrogen Mineralizationsupporting

confidence: 74%

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Fernández¹,

Stolpe²,

Celis³

et al. 2017

Chil. j. agric. res.

View full text Add to dashboard Cite

show abstract

“…This increase of 20.5 mg NO 3 − -N g −1 dry soil translates into an estimated net nitrification rate of 0.93 mg N g −1 dry soil d −1 for this postamendment period (17 Apr.-9 May 2012). Others have measured similar nitrification rates for agricultural soils amended with manure in field plots (Lentz and Lehrsch, 2012) and laboratory incubation studies (Masunga et al, 2016). Between 9 May and 31 May 2012, the soil was dry ( Fig.…”

Section: Determination Of Nitrification Ratesmentioning

confidence: 67%

“…However, these kinds of studies are difficult to conduct at the field scale because 15 N‐labeled fertilizers are very expensive. Further, the production of 15 N‐labeled manure for field‐scale use is highly resource intensive because it requires urine or manure to be amended with 15 N‐labeled urea or NH 4 + and incubated prior to use (Chadwick et al, 2001; Petersen et al, 2003; Ayadi et al, 2015), or livestock must be fed 15 N‐labeled feed to label both inorganic and organic N fractions (Chantigny et al, 2004; Martínez‐Alcántara et al, 2016).…”

mentioning

confidence: 99%

Stable Isotopes Reveal Rapid Cycling of Soil Nitrogen after Manure Application

2017

View full text Add to dashboard Cite

Understanding the fate of applied nitrogen (N) in agricultural soils is important for agronomic, environmental, and human health reasons, but it is methodologically difficult to study at the field scale. Natural abundance stable isotope measurements (δN) were used in this field study with micrometeorological measurements of nitrous oxide (NO) emissions to identify the biogeochemical processes responsible for rapid N transformations immediately after application of liquid dairy manure. Fifteen samplings occurred between 16 Mar. 2012 and 5 Apr. 2013, with a focus on spring manure application (before and after) and a winter snowmelt period. Concentrations and δN values of ammonium (NH), nitrate (NO), NO, and total N were measured throughout the year. Approximately 56 (±7)% of the NH-N applied in the spring could not be accounted for 3 d after manure application and was presumably lost by ammonia volatilization before it was tilled into the soil and/or removed from the inorganic N pool by microbial assimilation. Almost all of the remaining manure-NH (95 ± 1.1%) was converted within 3 wk to NO and NO by nitrification and nitrifier-denitrification, respectively. The in situ N isotope effect for nitrification (ε) was calculated to be -32.0 (±5.3)‰. Overall, field-scale measurements of δN at natural abundance provided valuable information that was used to distinguish sources of NH (manure vs. soil organic N) and to follow the production and consumption of NO and the pathways of NO production in soil.

show abstract

“…Эти процессы зависят от многих параметров и условий окружающей среды, в частности, температуры, влажности, микробного числа, текстуры почвы, возделываемой культуры и т. д. [3]. Именно поэтому для фермеров и крупных компаний АПК одним из требований к используемым азотным удобрениям является пролонгированное действие веществ, сохранение влаги, регулируемая иммобилизация и доступность азота.…”

Section: Introductionunclassified

Synthesis and properties of Biostim protein filler based acrylic composites

Байдакова¹,

Sitnicova²,

Uspenskaya³

et al. 2017

P&FPE

View full text Add to dashboard Cite

Методы синтеза и исследование свойств акриловых композитов на основе белкового наполнителя «Биостим» М.В. Байдакова, mvBaidakova@yandex.ru канд. хим. наук В.E. Ситникова д-р техн. наук. М.В. Успенская канд. техн. наук М.И. Кременевская О.А. Соснина, Т.В. Лебедева Университет ИТМО 191002, Россия, Санкт-Петербург, ул. Ломоносова, 9 Разрабатывали методы синтеза композитных материалов, наполненных белковыми веществами, полученными способом глубокой переработки побочных продуктов крупного рогатого скота и обладающими свойствами стимуляторов роста и развития растений. Проанализированы методы получения гидрогелевых композитов, наполненных активным веществом. Методом свободно радикальной полимеризации были получены акриловые композитные материалы с концентрацией белкового наполнителя «Биостим» 0,5; 1,0; 1,5; 2,0 и 5,0 масс. % со скоростью перемешивания 1200 и 6000 об/мин. Установлены зависимости влияния скорости перемешивания и концентрации наполнителя на свойства конечного продукта. Экспериментально выявлено, что с увеличением концентрации наполнителя материалы, синтезированные при скорости перемешивания 1200 об/мин увеличивали свои сорбционные свойства. Наилучшими набухающими свойствами в дистиллированной воде (до 700 г/г) обладал образец с концентрацией наполнителя 5 масс. %, синтезированный со скоростью перемешивания 1200 об/мин, по сравнению с образцами, синтезированными при больших скоростях перемешивания. Методом ИК спектроскопии исследована химическая структура таких наполненных композитных гидрогелей. Доказано, что применение полимерных белково-акриловых композитов с концентрацией активного вещества 5 масс. % позволит не только улучшить физико-химические свойства почвы, но и получить продукцию заданного состава.Ключевые слова: высокомолекулярные соединения; питание растений; акриловый композит; белковый гидролизат; методы синтеза; пищевые продукты.

show abstract

Nitrogen mineralization dynamics of different valuable organic amendments commonly used in agriculture

Cited by 217 publications

References 38 publications

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Stable Isotopes Reveal Rapid Cycling of Soil Nitrogen after Manure Application

Synthesis and properties of Biostim protein filler based acrylic composites

Contact Info

Product

Resources

About