Volatilização de amônia do solo após doses de ureia com inibidores de urease e nitrificação na cultura do abacaxi

Silva, Deivisson Ferreira da; Pegoraro, Rodinei Facco; Maia, Victor Martins; Kondo, Marcos Koiti; Souza, Gleika Larisse Oliveira Dorasio de; Mota, Mauro Franco Castro

doi:10.1590/0034-737x201764030014

Cited by 11 publications

(17 citation statements)

References 22 publications

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“…In the present work, the lowest values of pH with the use of highest urea dose can be explained by the fact that the higher presence of N in the soil increases the carbonic acid concentration, due to the greater microbial activity, which are dissociated and release H+ ions, reducing soil pH as in [18,19], promoting higher concentrations of acids, and consequently more acidic pH. What was also observed by Silva et al [20] when evaluating urea doses in 'Vitória' pineapple plant, and was verified a similar effect on soil pH with doses increased.…”

Section: Resultssupporting

confidence: 80%

Chemical Soil Attributes, Accumulation of Foliar Macronutrients and Productivity of the 'Vitória' Pineapple Plant Fertilized with Urea and Chicken Manure

Leonardo

Pereira

Dias

et al. 2019

JEAI

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The pineapple plant cultivar 'Vitória' is resistant to Fusarium and it presents similar characteristics to the cultivars 'Pérola' and 'Smoot Cayene'. However, the expansion of this new cultivar depends on the development of research on several aspects, among them, fertilization. In this context, the experiment was carried out with the objective of evaluating soil fertility, foliar macronutrient contents and productivity in 'Vitória' pineapple plant in function of nitrogen fertilization with urea and chicken manure. The experiment was conducted under randomized block design, with four replications. Treatments consisted of five doses of N, in two sources of organic fertilization (chicken manure ) and mineral (urea), totaling nine combinations generated through the Central Composite Matrix of Box: T1 , 44 and 2.91; T 2 , 152 and 0; T 3 , 0 and 10; T 4, 44 and 17.1; T 5 , 260 and 2.91; T6 , 152 and 10; T7 , 152 and 20; T8 , 304 and 10; and T9, 260 and 17.1 g plant-1. At 6 months after planting the chicken manure decreased H + A1, Mg and CEC levels, and at 23 months after planting increased soil P, SB e CEC levels. In the two seasons, Urea has reduced pH and it reduced Mg, SB and CEC contents at six months after planting. Doses of urea between 10 and 12 g plant-1 are recommended in order to maximize the productivity of the pineapple plant.

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Section: Resultssupporting

confidence: 80%

Chemical Soil Attributes, Accumulation of Foliar Macronutrients and Productivity of the 'Vitória' Pineapple Plant Fertilized with Urea and Chicken Manure

Leonardo

Pereira

Dias

et al. 2019

JEAI

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“…It should also be emphasized that N dynamics in the soil-plant-air system is complex. N efficiency depends on several factors interacting simultaneously such as cropping system, N application amount and timing, plant residues from previous crops, and edaphoclimatic factors acting on N volatilization, leaching, mobilization or nonmobilization (Farinelli and Lemos, 2010, Lorensini et al, 2012, Silva et al, 2017, Ajeigbe et al, 2018.…”

Section: Resultsmentioning

confidence: 99%

GRAIN SORGHUM GROWN AS SECOND CROP AND INOCULATED WITH Azospirillum brasilense ASSOCIATED WITH NITROGEN FERTILIZATION

Soares

Andreotti

Vicentini

et al. 2021

Rev. Agric. Neotrop.

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Nitrogen fertilization in crop sorghum during the off-season may have a lower cost-benefit ratio than expected, due to the residual effect of the predecessor crop. However, the use of growth-promoting bacteria can be an economical alternative to increase crop yield in the Cerrado. The objective was to evaluate the response of grain sorghum to nitrogen fertilization and its inoculation by A. brasilense. A complete randomized block design in a 5 x 2 factorial arrangement was used, with five replications of the following treatments: recommended amount of N (120 kg ha-1 of N-urea), divided into 0 %-100 %, 25 % -75 %, 50 %-50 % and 100 %-0 %, in sowing and coverage, respectively, and the control (without N); with and without inoculation via sorghum seed. The morphological and productivity components of the crop were evaluated. The application of 100 % of N in the sowing provided larger plants and the 50 %-50 % installment provided smaller plants. The plants did not respond to inoculation by A. brasilense. The yield components of sorghum grown in succession to soybean, rainfed, do not change due to A. brasilense inoculation and supply or installment of nitrogen fertilization.

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“…Entre as fontes disponíveis de adubos nitrogenados a ureia é a mais utilizada devido à alta concentração de N (45% de N) e menor custo (Silva et al, 2017). A ureia, ao ser aplicada na superfície do solo, está sujeito a perdas por volatilização (N-NH3) que podem atingir até 70% do nitrogênio (N) aplicado (Scivittaro et al, 2010;Adfert, 2013;Santos et al, 2016), configurando-se como sério problema econômico e ambiental.…”

Section: Introductionunclassified

“…O inibidor N-(n-butil) Tiofosfóricotriamida (NBPT ® ) possui capacidade de reduzir a hidrólise da ureia por meio da inibição da atividade da urease resultando em menores perdas por volatilização da amônia (Tasca et al, 2011;Cantarella et al, 2018). O efeito do uso do NBPT ® é mais expressivo na primeira semana após sua aplicação, pois a ureia se hidrolisa rapidamente, tornando-se suscetível às maiores perdas de N-NH3 (Silva et al, 2017). O NBPT ® associado à ureia pode ser utilizado como alternativa na diminuição das elevadas perdas de nitrogênio em sistemas de produção de forragem nos trópicos.…”

Section: Introductionunclassified

Eficiência da adubação nitrogenada associada ao inibidor de urease no cultivo de girassol-mexicano irrigado

Ribeiro

Donato

Machado

et al. 2021

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O uso da ureia como fertilizante implica em elevadas perdas de N-NH3. Essas perdas comprometem a sustentabilidade da adubação nitrogenada em sistemas intensivos de produção de forragem, mesmo em áreas irrigadas de regiões tropicais. Assim, é primordial a adoção de práticas de manejo que favoreçam a eficiência de utilização do N-ureia pelas plantas. Portanto, avaliou-se a aplicação de doses de ureia associada ou não ao inibidor de urease NBPT® sobre as perdas de N-NH3 do solo por volatilização, a produtividade e a eficiência de uso do N na Tithonia diversifolia em cultivo irrigado. Utilizou-se o delineamento em bloco casualizados, com quatro repetições, em esquema fatorial 2 x 5, sendo o primeiro fator a ureia associada ou não com o inibidor de urease NBPT®, e o segundo representado pelas doses de 0, 50, 100, 150 e 200 kg ha-1 de N. As maiores perdas de N-NH3 no solo foram observadas no 6º dia após aplicação, nos tratamentos sem inibidor de urease e nas maiores doses de ureia. A utilização de NBPT® reduziu a perda de N-NH3 no solo a menos de 5% das doses aplicadas. O NBPT® em mistura a ureia aumenta a eficiência agronômica do uso do N e a produtividade pela T. diversifolia em comparação ao uso do fertilizante sem esse inibidor. A eficiência do uso do nutriente aplicado possui comportamento inverso ao aumento da dose de N aplicada, sendo o melhor custo benefício referente a produtividade da forrageira (12.000 kg ha-1 de massa seca) obtido com a aplicação 50 kg ha-1 de N com NBPT®.

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Volatilização de amônia do solo após doses de ureia com inibidores de urease e nitrificação na cultura do abacaxi

Cited by 11 publications

References 22 publications

Chemical Soil Attributes, Accumulation of Foliar Macronutrients and Productivity of the 'Vitória' Pineapple Plant Fertilized with Urea and Chicken Manure

Chemical Soil Attributes, Accumulation of Foliar Macronutrients and Productivity of the 'Vitória' Pineapple Plant Fertilized with Urea and Chicken Manure

GRAIN SORGHUM GROWN AS SECOND CROP AND INOCULATED WITH Azospirillum brasilense ASSOCIATED WITH NITROGEN FERTILIZATION

Eficiência da adubação nitrogenada associada ao inibidor de urease no cultivo de girassol-mexicano irrigado

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