Ammonia volatilization and yield components after application of polymer-coated urea to maize

Zavaschi, Eduardo; Faria, Letícia de Abreu; Vitti, Godofredo César; Nascimento, Carlos Antonio da Costa; Moura, Thiago Augusto de; Vale, Diego Wyllyam do; Méndes, Fernanda Latanze; Kamogawa, Marcos Yassuo

doi:10.1590/s0100-06832014000400016

Cited by 22 publications

(21 citation statements)

References 21 publications

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“…The authors observed increased volatilization from 19% to 36% when the urea dose varied from 100 to 150 mg dm -3 N. For Almeida and Sanchez (2013) the use of controlled slow release N fertilizer is an alternative to reduce N loss. However, Zavaschi et al (2014) in an assessment of N losses, noted that the application polymer coated urea did not reduce ammonia loss by volatilization and did not interfere in soil ammonium and nitrate levels. The use of the urease inhibitors does not necessarily lead to lower NH 3 losses, only causing delays in the peak volatilization (Tasca et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Volatilization of ammonia in stabilized slow-release nitrogen fertilizer under controlled conditions

Ribeiro¹,

Andrade²,

Henrique³

et al. 2016

Aust J Crop Sci

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The loss of nitrogen through volatilization leads research to the search for new technologies that release nutrients in a manner synchronized with the crop demand, minimizing losses and increasing efficiency of its use in agriculture, as is the case with the stabilized slow-release nitrogen fertilizer. This work sought to evaluate the losses of volatilized N-NH 3 in stabilized slow-release nitrogen fertilizer applied to the soil. The treatments followed a 5 × 3 × 2 factorial as follows: five nitrogen fertilizer sources (conventional urea -CU; urea combined with zeolite -UZ; sulfur coated urea -US; NBPT coated urea -U NBPT , and urea combined with organic material -OU); three application times; and two managements (surface and incorporated applications) with three replications. The experiment was conducted using a collection chamber to capture NH 3 for 25 days, with samples taken at 2, 4, 7, 9,

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Section: Resultsmentioning

confidence: 99%

Volatilization of ammonia in stabilized slow-release nitrogen fertilizer under controlled conditions

Ribeiro¹,

Andrade²,

Henrique³

et al. 2016

Aust J Crop Sci

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“…Pereira et al (2009) em trabalho realizado com diferentes fontes de ureia na cultura do milho safrinha, sob sistema de plantio direto em dois parcelamentos, sendo o primeiro durante o período mais seco e o segundo no período úmido, observaram que o pico de volatilização de NH 3 ocorreu no 2 o e 4 o dia e 4 o e 5 o dia, respectivamente após aplicação dos fertilizantes nitrogenados; os tratamentos utilizando ureia revestida com polímero e ureia com inibidor de uréase reduziram a volatilização de N em torno de 50% em relação a ureia convencional. Segundo Zavaschi et al (2014) ao avaliarem o efeito da aplicação de ureia convencional e ureia revestida com polímero em cobertura na cultura do milho em sistema de plantio direto, verificaram que o pico de volatilização ocorreu após o 15 o dia para as duas fontes, e a ureia revestida de polímero apresentou redução de perdas de NH 3 por volatilização, quando comparada à ureia convencional. Figura 2.…”

Section: Resultsunclassified

Volatilização De Amônia Em Pastagem Adubada Com Fontes Nitrogenadas

Chagas

Gouveia

Costa

et al. 2017

Rev. Agric. Neotrop.

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A adubação nitrogenada é essencial para o aumento de produção de forrageiras, porém a fonte de nitrogênio (N) e fatores como o manejo podem ocasionar elevadas perdas de amônia (NH3) por volatilização. O presente trabalho foi conduzido com objetivo de quantificar as perdas de N por volatilização de NH3 em fontes nitrogenadas em pastagem. O experimento foi desenvolvido na Universidade Estadual de Mato Grosso do Sul (UEMS), Unidade Universitária de Cassilândia-MS, utilizando o delineamento experimental em blocos ao acaso com quatro tratamentos (ureia; ureia revestida com polímero; ureia com inibidor de urease; e nitrato de amônia) e cinco repetições. Em todos os tratamentos foi aplicada a dose equivalente a 100 kg ha-1 de N. Para a quantificação da volatilização de N-NH3 foram utilizados absorvedores de espumas, colocados à 1,0 cm da superfície do solo. As perdas de N-NH3 por volatilização foram menores quando utilizou-se ureia com inibidor de urease [N-(n-butil) tiofosfórico triamida] e ureia com polímero, quando comparadas ao uso da ureia convencional. A ureia com NBPT retardou o pico de volatilização em dois dias em relação à ureia convencional.

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“…The urea coated with a double layer of polymer did not reduce loss of ammonia by volatilization (Zavaschi et al, 2014). The application of conventional urea did not differ from coated urea for the variables of grain yield, N content in the leaves and grain, and chlorophyll content, all in corn.…”

Section: Introductionmentioning

confidence: 81%

Nutrient Release, Plant Nutrition, and Potassium Leaching from Polymer-Coated Fertilizer

Bley

Gianello

Santos

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:The increase in food consumption and limitations in food production areas requires improved fertilizer efficiency. Slow-or controlled-release fertilizers are an alternative for synchronizing nutrient availability with the plant demands, reducing losses to the environment. The aim of this study was to evaluate the efficacy of polymer-coated KCl compared with conventional KCl. The products were incubated in soil under controlled conditions to evaluate the time required for nutrient release. A greenhouse experiment was performed with corn plants in pots with loamy sand-or clay-textured soil types to evaluate plant nutrition and losses due to leaching. The K application rates were 0, 18, 36, and 54 mg dm . The pots were irrigated, and the percolated liquid was collected. The plants were harvested 30 days after sowing to quantify dry matter (DM) and its K content. In the incubation study, the K release from the coated fertilizer was found to be 42 % over 154 days. The data were fit to a linear function from which a period of 315 days was estimated as required for the release of 75 % of the nutrient. Meanwhile, conventional KCl releases 85 % of the K nutrient in the first 48h. In the cultivation of plants in pots, the coating reduced K losses due to leaching in the loamy sand soil; however, only the application rate of 54 mg dm -3 promoted DM production equivalent to conventional KCl. It is possible that the need for K in the early stages of corn development was not met by a coated KCl.

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Ammonia volatilization and yield components after application of polymer-coated urea to maize

Cited by 22 publications

References 21 publications

Volatilization of ammonia in stabilized slow-release nitrogen fertilizer under controlled conditions

Volatilization of ammonia in stabilized slow-release nitrogen fertilizer under controlled conditions

Volatilização De Amônia Em Pastagem Adubada Com Fontes Nitrogenadas

Nutrient Release, Plant Nutrition, and Potassium Leaching from Polymer-Coated Fertilizer

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