Rates of nitrogen and growth retardant trinexapac-ethyl on wheat

Espindula, Marcelo Curitiba; Rocha, Valterley Soares; Souza, Leandro Torres de; Souza, Moacil Alves de; Campanharo, Marcela; Grossi, José Antônio Saraiva

doi:10.1590/s0103-84782011001200002

Cited by 14 publications

(17 citation statements)

References 22 publications

(31 reference statements)

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“…Entretanto, na cultura do arroz, também Alvarez et al (2007) e Nascimento et al (2009) observaram que a aplicação de ETX afetou a produtividade da cultura. Corroborando essas informações, Espíndula et al (2011) relataram reduções da produtividade do trigo com o uso do ETX. Por outro lado, Buzetti et al (2006) observaram que o uso do regulador de crescimento (cloreto de clormequat) não afetou a produtividade do arroz.…”

Section: Variável Equaçõesunclassified

“…No Brasil, esses produtos são utilizados como maturadores de cana-de-açúcar e promovem aumento de rendimento de açúcar, sem impacto negativo na qualidade do caldo, no conteúdo de fibras ou na massa de colmos (Viana et al, 2008). Têm sido utilizados com sucesso na cultura do trigo, visando à redução da altura de plantas, evitando o acamamento (Zagonel & Fernandes, 2007;Espíndula et al, 2011). Para a cultura do arroz de terras altas, ainda existem poucas informações sobre a aplicação de biorreguladores, visando a reduzir a altura das plantas e seus efeitos nos componentes de produção e produtividade da cultura (Buzetti et al, 2006;Alvarez et al, 2007;Nascimento et al, 2009).…”

Section: Introductionunclassified

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Produtividade de arroz de terras altas em função de reguladores de crescimento

2014

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Upland rice yield as a function of growth regulatorsThe use of sprinkler-irrigation and/or high levels of fertilization in upland rice can increase plant height and hence plant lodging. Lodging can be controlled by using growth regulators, in order to reduce plant height. The objective of this study was to evaluate the efficiency of plant growth regulators applied at the stage of panicle primordium differentiation on the reduction of plant height and the impact on grain yield and its components of upland rice cultivar Primavera, under sprinkler irrigation. The experiment was arranged in a 3x4 factorial randomized blocks design with four replications. Treatments consisted of: mepiquat chloride and trinexapac-ethil applied at doses 9, 50, 100, and 200 mg a.i. ha-1, and paclobutrazol at doses of 0, 25, 50, and 100 mg a.i. ha-1. Plant growth regulators reduced rice plant height; increasing doses of regulators reduced upland rice grain yield and its components; trinexapac-ethyl was the most harmful to rice grain yield.In this study, it was not identified the dose of growth regulator that allied reduction in plant height and did not cause decrease in rice yield.

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Section: Variável Equaçõesunclassified

Section: Introductionunclassified

Produtividade de arroz de terras altas em função de reguladores de crescimento

2014

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“…According to MATYSIAK (2006) the cereal grain yield may also be increased in case of a lack of permanent crop lodging. Some authors observed that retardants have influence on the number of seeds per ear and the mass of thousand grains but the influence is often the retardant type or rate depended (ESPINDULA et al, 2009;ESPINDULA et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Two tank-mix adjuvants effect on yield and quality attributes of wheat treated with growth retardants

Miziniak¹,

Matysiak²

2016

Cienc. Rural

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“…Espindula et al (2009) found quadratic responses of grain yield for rates that varied from 30 to 150 kg ha -1 . Espindula et al (2011) reported higher grain yield of wheat 'Pioneiro' (adapted to Brazilian Savanna) with 100 kg N ha -1 in the same soil and similar climatic conditions. Corroborating these results, Espindula et al (2010) reported maximum grain yield with 96.8 kg N ha -1 with the same cultivar.…”

Section: Introductionmentioning

confidence: 85%

“…Corroborating these results, Espindula et al (2010) reported maximum grain yield with 96.8 kg N ha -1 with the same cultivar. These authors found yields of 4800 and 5000 kg ha -1 (Espindula et al, 2011). In Brazilian Savanna conditions, Trindade et al (2006) report a maximum grain yield of 5 733 kg ha -1 (maximum technical efficiency) with 73 kg N ha -1 (economic rate).…”

Section: Introductionmentioning

confidence: 97%

Rates of urea with or without urease inhibitor for topdressing wheat

Espindula¹,

Rocha²,

Souza³

et al. 2013

Chilean J. Agric. Res.

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The urease inhibitor NBPT(N-(n-butyl) thiophosphoric triamide) is a management alternative to increase urea efficiency in topdressing because it reduces NH3 volatilization. The objective of this study was to evaluate N recovery and yield performance of wheat (Triticum aestivum L.) 'BRS 254' fertilized with different urea or urea + NBPT rates in topdressing. The experiment was conducted from May to September 2007 in Viçosa, Minas Gerais, Brazil. Treatments followed a 5 × 2 + 1 factorial design consisting of five N fertilizer rates (30, 60, 90, 120, and 150 kg ha -1 ) as urea or urea + NBPT (Agrotain ® ) applied as topdressing and a control without N. The experiment was a randomized complete block design with four replicates. Adding NBPT to urea resulted in better N utilization by wheat plants. The 100 kg N ha -1 topdressing rate provided the best apparent N recovery by wheat plants, whereas 90 kg ha -1 provided the best N use efficiency.

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Rates of nitrogen and growth retardant trinexapac-ethyl on wheat

Cited by 14 publications

References 22 publications

Produtividade de arroz de terras altas em função de reguladores de crescimento

Produtividade de arroz de terras altas em função de reguladores de crescimento

Two tank-mix adjuvants effect on yield and quality attributes of wheat treated with growth retardants

Rates of urea with or without urease inhibitor for topdressing wheat

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