Chapter 8 Recent Developments of Fertilizer Production and Use to Improve Nutrient Efficiency and Minimize Environmental Impacts

Chien, S. H.; Prochnow, Luís Ignácio; Cantarella, Heitor

doi:10.1016/s0065-2113(09)01008-6

Cited by 429 publications

(287 citation statements)

References 108 publications

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“…The increase in the efficiency of N fertilization of field crops has been a major concern for decades (Chien;Prochnow;Cantarella, 2009). Intensive research aims at solving the threat of N loss in the form of ammonia.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchard

et al. 2016

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Ammonia volatilization (N-NH 3 ) is one of the main pathways of Nitrogen loss reducing nitrogen use efficiency in coffee orchard. This work aimed at quantifying ammonia volatilization (N-NH 3 ) losses from N-sources to be used in coffee plantations fertilization in Brazil. The experiment was conducted in the field on a dystrophic red latosol (Ferralsol in FAO's classification) at the Coffee Research Sector, University of Lavras, MG, Brazil. The experimental design was of complete randomized blocks with three repetitions of the following treatments: conventional urea, ammonium nitrate and urea + 0.15% Cu and 0.4% B, urea + anionic polymers, urea + elementary sulfur (S 0 ) + polymers, and urea + plastic resin. These N sources were split into three doses of 150 kg ha -1 and band applied. The N-NH 3 losses by volatilization and variations of pH (H 2 O) were measured, before and after N application. The N-sources contributed to reduce the soil pH, measured after the third nitrogen fertilization. The N-NH 3 losses by volatilization (average from three applications) was as follows: urea + anionic polymers (35.8%) > conventional urea (31.2%) = urea + S 0 + polymers (31.0%) > urea + 0.15% Cu + 0.4 % B (25.6%) > urea + plastic resin (8.6%) = ammonium nitrate (1.0%).Index terms: Coffee arabica; slow and controlled release and stabilized fertilizers; ammonium nitrate; urea. RESUMOA volatilização de amônia é uma das principais causas da redução da eficiência no uso de fertilizantes nitrogenados em lavouras cafeeiras. Neste trabalho, objetivou-se quantificar as perdas de nitrogênio por volatilização de fertilizantes nitrogenados aplicados em lavoura cafeeira. O experimento foi realizado em condições de campo, em um Latossolo Vermelho distrófico, cultivado com café, localizado no Setor de Cafeicultura/Departamento de Agricultura/UFLA, Lavras -MG. O delineamento experimental foi em blocos casualizados e os tratamentos foram: ureia; nitrato de amônio; ureia + 0,15% de Cu + 0,4% de B; ureia + polímeros; ureia + enxofre elementar (S 0 ) + polímeros e; ureia + resina plástica; distribuídos em três parcelamentos com doses iguais de 150 kg ha -1 . Foram quantificadas as perdas de nitrogênio por volatilização (N-NH 3 ) e as variações no pH em água, da camada de 0-5 cm de solo, antes e depois dos parcelamentos das adubações nitrogenadas. Os fertilizantes nitrogenados reduziram os valores do pH do solo após as três adubações de manutenção. A perda de nitrogênio por volatilização dos fertilizantes nitrogenados (média das três adubações) foi: ureia + polímeros (35,8% do total do N aplicado) > ureia (31,2%) = ureia + S 0 + polímeros (31,0%) > ureia + Cu + B (25,6%) > ureia + resina plástica (8,6%) = nitrato de amônio (1,0%).Termos para indexação: Coffee arabica; fertilizantes estabilizados e de liberação controlada; nitrato de amônio; ureia.

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Section: Introductionmentioning

confidence: 99%

Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchard

et al. 2016

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“…Many researchers have worked in order to minimize volatilization of NH 3 from urea fertilization (Costa et al 2003;Cantarella et al, 2008, Chien et al, 2009, Paiva et al, 2012, Stafanato et al, 2013. Alternatives include adequacy of the application time of N (Da Ros et al, 2005), management of soil moisture (Duarte et al, 2007), a mixture of urea with other fertilizers with acid characteristics, like boric acid, in order to manage the soil chemical characteristics (Vitti et al, 2007), and the use of urea coated with urease inhibitors (Chien et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Alternatives include adequacy of the application time of N (Da Ros et al, 2005), management of soil moisture (Duarte et al, 2007), a mixture of urea with other fertilizers with acid characteristics, like boric acid, in order to manage the soil chemical characteristics (Vitti et al, 2007), and the use of urea coated with urease inhibitors (Chien et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Urease inhibitor (NBPT) and efficiency of single or split application of urea in wheat crop

et al. 2014

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RESUMOInibidor de urease (NBPT) e a eficiência da ureia aplicada em dose única ou parcelada na cultura do trigo O NBPT (N-(n-butil) tiofosfórico triamida) é uma substância inibidora da urease, que se vem apresentando como das mais promissoras para a maximização do uso do nitrogênio da ureia em sistemas agrícolas. O objetivo deste estudo foi avaliar o desempenho produtivo do trigo irrigado, submetido à fertilização com ureia ou ureia+NBPT aplicadas em dose única ou parcelada. O experimento foi conduzido, de junho a outubro de 2006, em Viçosa-MG, Brasil. Seguiu-se o esquema fatorial 2×2, em que a ureia ou ureia+NBPT foram combinadas com duas formas de aplicação: dose total na semeadura (60kg ha -1 ) ou parcelada (20kg ha -1 na semeadura + 40kg ha -1 , em cobertura, no perfilhamento). O delineamento experimental foi o de blocos ao acaso com dez repetições. Conclui-se que o parcelamento da fertilização nitrogenada não promove incremento de produtividade do trigo, sob as condições de cultivo empregadas; o uso de inibidor de urease aumenta a produtividade da cultura do trigo, quando a ureia é aplicada, em cobertura, durante o perfilhamento, mas, seu uso não promove aumento da produtividade quando a ureia é aplicada no sulco, durante a semeadura. Palavras-chave:Triticum aestivum L., nitrogênio, volatilização de amônia. Received: 20/09/2012; Approved:20/02/2014 Urease inhibitor (NBPT) and efficiency of single or split application of urea in wheat crop 1 NBPT (N-(n-butyl) thiophosphoric triamide), a urease inhibitor, has been reported as one of the most promising compounds to maximize urea nitrogen use in agricultural systems. The objective of this study was to evaluate the performance of irrigated wheat fertilized with urea or urea + NBPT as single or split application. The experiment was conducted from June to October 2006 in Viçosa, MG, Brazil. The experimental design followed a 2×2 factorial scheme, in which urea or urea + NBPT were combined with two modes of application: full dose at sowing (60kg ha -1 ) or split (20kg ha -1 at sowing + 40kg ha -1 as topdressing at tillering), in randomized blocks with ten replications. The split application of nitrogen fertilization does not improve the yield wheat under used conditions. The use of urease inhibitor improves the grain yield of wheat crop when urea is applied in topdressing at tillering, but its use does not promote difference when urea is applied in the furrow at planting.

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“…Chemical fertilizers are essential to produce enough food to feed 7 billion people in the world. However, their huge environmental impacts, from nutrient leaching and eutrification to nitrous oxide (a greenhouse gas) emission, determine that a greater efficiency has to be achieved in fertilizer use (Chien et al, 2009). Among other things, slow-release fertilizers have been developed and widely used to improve fertilizer use efficiency.…”

Section: Introductionmentioning

confidence: 99%

An organoclay formula for the slow release of soluble compounds

Yuan¹

2014

Applied Clay Science

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Keywords: Organoclays Nanoclays Slow-release formula Fertilizer DCD Slow-release formulations have been developed to enhance the effective use of active ingredients. In the case of fertilizers the formulations reduce nutrient leaching and greenhouse gas emissions. While polymer-coating is the dominant technology in producing slow-release fertilizers there is a demand for alternative options for different usages. To this end, a commercially available organoclay, with a basal spacing of 3.67 nm, was used as matrix to produce pellets of CuSO 4 and dicyandiamide (DCD) of different sizes by a die set and hand press. Both CuSO 4 and DCD pellets showed a good slow-release performance in dissolution tests. Large pellets (1.2 cm in diameter) of CuSO 4 had a better performance in slow-release than small ones (0.7 cm). For DCD pellets (0.7 cm in diameter) it took 6 days for a complete dissolution. The slow-release effect is probably due to the hydrophobic nature and high aspect ratio of the organoclay. The former makes soluble compounds between organoclay particles less susceptible to dissolution in water, whereas the latter hinders the dissolution of solutes inside a pellet by making their diffusion passage tortuous. The organoclay formulation is easy to make, and the rate of solute release can be adjusted by changing pellet size.

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Chapter 8 Recent Developments of Fertilizer Production and Use to Improve Nutrient Efficiency and Minimize Environmental Impacts

Cited by 429 publications

References 108 publications

Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchard

Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchard

Urease inhibitor (NBPT) and efficiency of single or split application of urea in wheat crop

An organoclay formula for the slow release of soluble compounds

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