Spring irrigation of tall fescue for seed production

Huettig, Krista D.; Chastain, Thomas G.; Garbacik, Carol J.; Young, William C.; Wysocki, Donald John

doi:10.1016/j.fcr.2013.01.023

Cited by 15 publications

(19 citation statements)

References 19 publications

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“…However, in the present study, the correlation coefficient of panicle length with PSY was low in both growing seasons. A similar result for the relationship of pure seed number per square-meter and seed yield was also found by Huettig et al (2013), in six cultivars of tall fescue, Schedonorus phoenix (Scop.) Holub.…”

Section: Resultssupporting

confidence: 61%

Seed production of 'Mombasa' grass subjected to different closing cut dates and nitrogen rates

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et al. 2016

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effects of closing cut dates (CCD) and nitrogen (N) rates on the components of pure seed yield (PSY) and seed quality in 'Mombasa' grass (Megathyrsus maximus 'Mombaça'), besides determining the parameters of apparent N efficiency (ANE) and agronomic N efficiency (AgNE). The field experiments were carried out over two growing seasons, 2010/2011 and 2011/2012, in Umuarama, PR, Brazil. The folllowing treatments were evaluated: CCD on October 10, January 31, February 15, and March 1; and N doses at 0, 75, 150, and 225 kg ha -1 . Significant interactions between the CCD and N doses were observed for the panicle tiller number (PTN), pure seeds per panicle, PSY, ANE and AgNE. Values of ANE and AgNE were better for 150 kg N ha -1 . There were no effects of CCD and N doses on seed quality. PSY was closely correlated with PTN, pure seeds per panicle, and pure seed number.The CCD treatments of longer growth duration and higher N doses showed the higher PSY. Final CCD delaying until February and N availability reduced yield. Closing cut date and N fertilization affect pure seed yield and yield component responses of 'Mombasa' grass.Index terms: agronomic nitrogen efficiency, apparent nitrogen efficiency, seed quality, seed yield. de N. A DR e o N não tiveram efeitos sobre a qualidade das sementes. O RSP foi estreitamente correlacionado ao NPP, às sementes puras por panícula e ao número de sementes puras. As DRs com maiores durações de crescimento e doses de N tiveram maiores RSP. O atraso da DR final até fevereiro e a disponibilidade de N reduziram os rendimentos. A data de rebaixamento e a adubação com N afetam as respostas do rendimento de sementes puras e as componentes do rendimento do capim-mombaça. Produção de sementes de capim-mombaça submetido a diferentes datas de rebaixamento e doses de nitrogênioTermos para indexação: eficiência agronômica de nitrogênio, eficiência aparente de nitrogênio, qualidade de sementes, rendimento de sementes.

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Section: Resultssupporting

confidence: 61%

Seed production of 'Mombasa' grass subjected to different closing cut dates and nitrogen rates

Canto

Almeida

Costa

et al. 2016

Pesq. agropec. bras.

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“…Florets spikelet −1 was not affected by TE applications in perennial ryegrass regardless of where the spikelets were located within the spike ; however, early application of TE (BBCH 32) increased florets spikelet −1 in strong creeping red fescue (Zapiola et al, 2014). The number of florets spikelet −1 produced has not been observed to have an influence on seed yield (Chastain et al, 2011;Huettig et al, 2013).…”

Section: Te Application Timingmentioning

confidence: 77%

“…The increase in seed yield attributable to TE application was likely a result of increased seed number m −2 (r = 0.99, P < 0.01). Huettig et al (2013) found that spring irrigation in tall fescue seed crops increased seed yield and the irrigation-induced gains in yield were attributed to greater seed number m −2 . Griffith (2000) reported that lodging reduced seed yield in perennial ryegrass as a result of reduced seed number.…”

Section: Tablementioning

confidence: 97%

“…While seed set was not measured in this study, TE increased seed set in perennial ryegrass seed crops and was likely a factor in the increase in seed number m −2 resulting from TE application in tall fescue . The expression of seed yield in tall fescue has been widely reported to be more influenced by seed number than by seed weight (Young et al, 1998b(Young et al, , 1999bHuettig et al, 2013;Chastain et al, 2014b).…”

Section: Tablementioning

confidence: 99%

“…The values are means of six harvest years across six environments and three field trials. populations in tall fescue are not typically influenced by management practices that are employed after the time that the tillers begin reproductive development (Young et al, 1999a;Huettig et al, 2013). All TE applications were made after the start of stem elongation, so the development of the panicle was well underway at that point.…”

Section: Tablementioning

confidence: 99%

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