Tillering does not interfere on white oat grain yield response to plant density

Almeida, Milton Luiz de; Sangoi, Luís; Ender, Márcio; Wamser, Anderson Fernando

doi:10.1590/s0103-90162003000200008

Cited by 4 publications

(3 citation statements)

References 7 publications

(6 reference statements)

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“…In wheat, Zagonel et al (2002) showed that higher density of plants may favor the increase of grainproductivity, to the point of identifying genotypes that were responsive to the increase of the population. Almeida et al (2003)have already observed, in oat obsolete cultivars of middle and late cycle, amplitude of seeds density adjustedfrom 50 to 500 plants m -2 . The increment of the sowing density inearly cycle wheat cultivars, mainly of lower expression of tillering, presented benefits in the increase of sowing density on grain productivity (Silveira et al, 2010).…”

Section: Resultsmentioning

confidence: 80%

The sowing density on oat productivity indicators

Romitti¹,

Dornelles²,

Silva³

et al. 2017

Afr. J. Agric. Res.

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The sowing density adjustment in oatcan maximize the productivity expression.The aim of this study is to define the behavior of productivity expression of biomass, grains, straw andharvest indexthrough increasing sowing density in the main biotype cultivated in Southern Brazil. It proposesthe possibility of indicating higher sowing density to the productivity maximization of biomass and grains.With the densityadjusted to the grain productivity to simulate the reflexes on the biological and straw productivity and harvest index compared to recommendeddensity, considering high and reduced tillering cultivars in different succession systems.The study was carried out in 2013, 2014 and 2015 in randomized blockdesign with four replications in a 4 × 2 factorial scheme, for sowing density (100, 200, 300, 600 and 900 m -2 ) and oat cultivars (Brisasul and URS Taura), respectively, in the corn/oat and soybean/oat succession system.With the increase in sowing density, the biological and straw productivity evidence alinear behavior and the grain productivity and harvest index ofquadratic behavior, regardless of the cultivar,agricultural year and succession system. It is possible to indicate a higher sowing density to the biomass and grain productivity maximization with sowing density close to 500 seeds m -2 in the main succession systems.In high and reduced tillering cultivars, the adjusted density compared tothe recommended increasedthe biological and straw productivity, regardless of agricultural year and succession systems.

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Section: Resultsmentioning

confidence: 80%

The sowing density on oat productivity indicators

Romitti¹,

Dornelles²,

Silva³

et al. 2017

Afr. J. Agric. Res.

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“…However, the eucalyptus tiller-suppression was strong near the trees, suggesting that in addition to nitrogen, other agronomic practices must be used, such as a higher seeding rate (e.g., PELTONEN-SAINIO et al, 1995;ALMEIDA et al, 2003) combined or not with other plant arrangements, to the community took on uniculm growth habit. GILL et al (2009) observed a declining trend in the tiller number of wheat varieties, which increase in age from 4 to 6 years old in a poplar plantation.…”

Section: Resultsmentioning

confidence: 99%

Oat tillering and tiller traits under different nitrogen levels in an eucalyptus agroforestry system in Subtropical Brazil

et al. 2014

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Perfi lhamento e características dos perfi lhos da aveia submetida a níveis de nitrogênio em sistema agrofl orestal com eucalipto no subtrópico brasileiro RESUMO Na produção de aveia, a persistência do perfi lhamento é determinante para um importante componente de rendimento, o número de panículas. Esse processo é bastante infl uenciado pelas interações interespecífi cas e intraespecífi cas no agroecossistema, que, por sua vez, depende das práticas agronômicas. A hipótese deste trabalho é que o nitrogênio não aumenta a tolerância da aveia à interferência negativa das árvores, logo, a persistência do perfi lhamento para produção de grãos não é modifi cada pelo nitrogênio em distâncias relativas às faixas de eucaliptos, em sistema agrofl orestal em aleias (SAF

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“…Results of this research reinforce the idea that the chances of tillers to contribute to grain yield are reduced under stressful conditions. Considering that there must be a synchronism between tillers and main stem development, so that tillers can substantially contribute to grain yield (Wobeto, 1994, Merotto Jr., 1995, Almeida et al (2002;2003) raised the question about the real importance of tillering to improve wheat performance under the environmental conditions prevailing in the growing regions of Southern Brazil. In this work, treatments were chosen aiming to simulate stresses commonly found in wheat fields, and to evaluate their influence on the tillering process.…”

Section: Resultsmentioning

confidence: 99%

Tiller emission and dry mass accumulation of wheat cultivars under stress

Almeida

Sangoi

Merotto

et al. 2004

Sci. agric. (Piracicaba, Braz.)

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Tillers are important structures for wheat (Triticum aestivum L.) because they contribute to increase the number of spikes per area, enhancing grain yield. Stresses during plants early growth have a sizable effect on tiller production. Three experiments were conducted to evaluate the effects of stresses induced by unevenness in sowing depth, defoliation and differences in soil pH on tiller emission and dry mass accumulation of wheat cultivars. The experiments were carried out in Lages, Southern Brazil, during the winter growing seasons of 2000 and 2001. They were performed in square boxes, under natural conditions of radiation and irrigation. In the first experiment, five types of sowing depths were tested to simulate different systems of unevenness in plant emergence of cultivar Embrapa 16. In the second experiment, two wheat cultivars (BRS 177 and BRS 179) were submitted to four types of main stem defoliation. The third experiment assessed the effects of three levels of soil acidity correction on the tillering pattern of Fundacep 29. Unevenness in sowing depth, alternating pairs of seeds at 3 cm and 5 cm deep, reduced tiller emission and dry mass accumulation. The removal of the first and second main stem leaves reduced significantly BRS 179 tiller dry mass and number and did not affect the tillering pattern of BRS 177. The lack of liming restricted tiller emission and reduced plant dry mass accumulation.

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Tillering does not interfere on white oat grain yield response to plant density

Cited by 4 publications

References 7 publications

The sowing density on oat productivity indicators

The sowing density on oat productivity indicators

Oat tillering and tiller traits under different nitrogen levels in an eucalyptus agroforestry system in Subtropical Brazil

Tiller emission and dry mass accumulation of wheat cultivars under stress

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