Cultivation of lettuce fertilized with controlled-release nitrogen fertilizer and urea

Pedrinho, Denise Renata; Bono, José Antônio Maior; Ludwig, Juliane; Martinez, Vinicius Romeiro; Faria, Marcus Rodrigo de

doi:10.14393/bj-v31n4a2015-26122

Cited by 12 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For Yeshiwas et al (2018), high rates of nitrogen application adversely affect product quality, increasing nitrate accumulation in leaves that directly influence human health. Pedrinho et al (2015) concluded that the use of protected (encapsulated) urea in Americana lettuce crop did not increase yield when compared to managed urea in planting, on the other hand, the use of managed urea in planting and in cover; showed higher productivity than the protected urea source. As in Ferreira et al (2019a) when approaching in their research that the production components in corn crop were enhanced by the presence of Polyblen.…”

Section: Resultsmentioning

confidence: 99%

“…The application of fertilizers with adequate doses of N in lettuce crop is a convenient strategy, since its basically leaf composition provides high response to the availability of this mineral (Melo et al 2018). The efficiency of N can be increased by using controlled release N-based fertilizers, which aim to keep the element in less loss-prone forms (Pedrinho et al 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Univariate and multivariate controlled release nitrogen pairing on lettuce culture performance

Ferreira¹,

Bastos²,

Carvalho³

et al. 2020

Commun. Plant Sci.

View full text Add to dashboard Cite

There are few studies in the literature that demonstrate the behavior of controlled release nitrogen fertilization in lettuce crop. Thus, the objective of this work was to evaluate, through univariate and multivariate pairing, the behavior of controlled release nitrogen sources on the performance of lettuce culture. The studies were conducted at the Horta dos Coqueiros property in Mineiros-GO, Brazil. The soil analyzes were taken before the experiment implementation, in the 0 to 20 cm layer, the soil was classified as NEOSSOL Quartzarenic. The experimental design was a randomized complete block design, with a 2x2x5 factorial design corresponding to 2 lettuce genotypes (Americana cv. Lucy Brow and Crespa cv. Vanda), submitted to two controlled release N sources (NitroMais and Polyblen). doses (0, 75, 150, 225, 300 kg ha-1 of N) performing 4 repetitions. Transplantation occurred 20 days after sowing in trays, with plant spacing of 30x30. Data collection occurred 45 days after transplantation used 5 central plants of each plot. The analyzes were performed in the Rbio R interface, besides the Genes Software. The analysis of variance revealed triple interaction among the variables. Quadratic effect was expressed for both genotypes on protected nitrogen sources. For high performance of lettuce cultura in the Americana genotype cv. Lucy Brown recommends the application of protected nitrogen Polyblen at a concentration of 217.50 and NitroMais at 174.38 kg ha-1 of N, as well as the source Polyblen at a dose of 146.50 kg ha-1 of N in the genotype Crespa cv. Vanda. Highlighted Conclusions 1. High performance of lettuce crop in the genotype Americana cv. Lucy Brown recommends the application of controlled release nitrogen Polyblen at a concentration of 217.50 and NitroMais at 174.38 kg ha-1 of N. 2. In the Crespa cv. Vanda, the Polyblen source is at a dose of 146.50 kg ha-1 of N.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Univariate and multivariate controlled release nitrogen pairing on lettuce culture performance

Ferreira¹,

Bastos²,

Carvalho³

et al. 2020

Commun. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Silva et al (2012) et al in the maize crop and Silva Junior et al (2016) in the production of fruits of Caryca papya L., verified the effect of slow release nitrogen, when compared to urea. Pedrinho et al (2015) working with rapid cycle crop, as the lettuce, and with slow release and traditional urea, found no differences in productivity among the studied sources. Veçozzi et al (2018) using N sources with urea and urea coated with polymers, in the irrigated rice crop, found no effect among the sources.…”

Section: Introductionmentioning

confidence: 82%

Nitrogen coated fertilizer with controlled release for the maize crop

et al. 2020

Self Cite

View full text Add to dashboard Cite

Maize represents one of the most cultivated crops of cereals in the world, being used as a source of grain, silage and biofuel. Nitrogen is very required in the maize crop, making nitrogen fertilization a significant part of the production cost. The objective of this study was to evaluate the response of two sources of N, urea and coated urea of controlled release, regarding the productivity and the cost/benefit ratio in maize for 2nd harvest. The experiment was carried out in the field in soil classified as dystroferric Red Latosol and treatments distributed in experimental plots, following the randomized block design with four replications. The treatments were 40 kg N ha-1 of common urea; 60 kg N ha-1 of common urea; 40 kg N ha-1 of coated urea; 60 kg of N-coated urea and the control without application of N broadcast application in planting. The maize crop responded to the application of nitrogen at planting. However, the use of coated urea did not increase the grain yield in relation to the use of common urea. The economic analysis demonstrated a better efficiency of use of N and the best net revenues with the application of the dose of 40 kg N ha -1 of common urea in the planting of the crop.

show abstract

“…Todavia, relatos de teores abaixo daqueles tidos como referência mesmo com produtividade adequada são, relativamente, frequentes. Oliveira et al (2010), por exemplo, ao analisarem amostras foliares de alface (cv. Regina 2000) em cultivo orgânico, encontraram valores entre 27,6 a 29,3 g kg -1 N. Por sua vez, Resende et al (2012) avaliaram os efeitos de diferentes doses de N e Mo em alface americana (cv.…”

Section: Discussionunclassified

“…No entanto, esta fonte apresenta uma desvantagem em relação às demais, pois o N deste fertilizante pode ser perdido por volatilização na forma de NH3 quando não incorporado adequadamente ao solo (SILVA et al, 2012). Para reduzir ou eliminar estas desvantagens a ureia pode ser revestida com uma ou mais camadas de polímeros, as quais tem a finalidade de reduzir a velocidade de dissolução do fertilizante e, logo, a liberação do nutriente (PEDRINHO et al, 2015).…”

Section: Introductionunclassified

Doses E Modos De Aplicação De Ureia Revestida Com Polímero No Cultivo De Alface Americana

Charlo

Almeida

Júnior

et al. 2020

NAT

View full text Add to dashboard Cite

O objetivo deste estudo foi avaliar o efeito de doses e modos de aplicação de N, fornecido por meio de ureia revestida, no estado nutricional e produção de alface americana. Utilizou-se o delineamento em blocos ao acaso em arranjo fatorial 6x4 + 1, sendo seis doses de N (28,75; 57,50; 115,00; 172,50; 230,00; 287,50 kg ha-1 de N), como fonte a ureia revestida, e quatro modos de aplicação do nutriente (100% da dose no transplante; 50% no transplante + 50% aos 10 dias após o transplante (DAT); 25% no transplante + 75% aos 10 dias DAT; 25% no transplante + 25% a cada cobertura, aos 10, 20 e 30 DAT). No tratamento adicional utilizou-se a ureia convencional. Foram determinados os teores foliares de N, P, K, Ca e Mg, a massa fresca total e comercial da cabeça, o diâmetro do caule, a altura da planta e o diâmetro da cabeça aos 30 e 60 dias após o transplante. Verificou-se que a adubação nitrogenada aumentou os teores foliares de N, Ca e Mg, e reduziu os teores foliares de K e P. Não houve influência das doses de N proveniente de ureia revestida com polímero e dos modos de aplicação nos atributos morfológicos e produtivos da cultura. Palavras-chave: Lactuca sativa L.; nitrogênio; fertilizante de liberação lenta; fertilizante de liberação controlada. RATES AND APPLICATIONS WAYS OF POLYMER-COATED UREA IN CRISPHEAD LETTUCE CULTIVATION ABSTRACT: The aim of this study was to evaluate the effect of N rates (using a polymer-coated urea) and N application ways in nutritional status and yield of crisphead lettuce. The randomized block design in a 6 x 4 + 1 factorial arrangement was used, with six N rates (28.75, 57.50, 115.00, 172.50, 230.00, 287.50 kg ha-1 of N), with the use of polymer-coated urea, and four nutrient application ways (100% of the transplant rate, 50% at the transplant + 50% at the 10 days after the transplant (DAT), 25% at the transplant + 75% at 10 days DAT, 25% at transplant + 25% at each side dressing fertilization at 10, 20 and 30 DAT). The additional treatment was related to the recommended N fertilization using conventional urea. N, P, K, Ca and Mg, total and commercial yield, stem diameter, plant height and head diameter were determined at 30 and 60 days after transplant. Nitrogen fertilization increased the N, Ca and Mg foliar levels, independently of the application way. However, in general, it reduced the leaf levels of K and P. There was no influence of N rates from polymer-coated urea and application way on the morphological attributes and yield of the crop. Keywords: Lactuca sativa L.; nitrogen; slow-release fertilizer; controlled-release fertilizer.

show abstract

Cultivation of lettuce fertilized with controlled-release nitrogen fertilizer and urea

Cited by 12 publications

References 7 publications

Univariate and multivariate controlled release nitrogen pairing on lettuce culture performance

Univariate and multivariate controlled release nitrogen pairing on lettuce culture performance

Nitrogen coated fertilizer with controlled release for the maize crop

Doses E Modos De Aplicação De Ureia Revestida Com Polímero No Cultivo De Alface Americana

Contact Info

Product

Resources

About