Yield and grain quality of spring barley as affected by biomass formation at early growth stages

Křen, Jan; Klem, Karel; Svobodová, Ilona; Míša, P.; Neudert, Lubomír

doi:10.17221/91/2014-pse

Cited by 27 publications

(29 citation statements)

References 11 publications

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“…Similar results were found by Křen et al (2014), who analysed spring barley yields applying different N fertilisation rates. The yield increase was determined to be higher using N rate from 0 kg N/ha to 45 kg N/ha, rather than the rate from 45 kg N/ha to 90 kg N/ha.…”

Section: Discussionsupporting

confidence: 86%

Nitrogen migration in crop rotations differing in fertilisation

Gužys

Misevičienė

2015

Span. j. agric. res.

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Inappropriate use of nitrogen fertilisers is becoming a global problem; however, continuous fertilisation with N fertiliser ensures large and constant harvests. To evaluate the relationships of differently fertilised cultivated plant rotation with N metabolism in the agroecosystem the research was conducted between 2006 and 2013 at Lipliūnai, Lithuania, in fields with calcareous gley brown soil, i.e. Endocalcari Endohypogleyic Cambisol (CMg-n-w-can). The research area covered three drained plots where crop rotation of differently fertilised cereals and perennial grasses were applied. The greatest productivity was found in a higher fertilisation (TII, 843 kg N/ha) cereals crop rotation. With less fertilisation (TI, 540 kg N/ha) crop rotation productivity of cereals and perennial grasses (TIII, 218 kg N/ha) was 11-35% lower. The highest amount of mineral soil N (average 76 kg/ha) was found in TI. It was influenced by fertilisation (r=0.71) and crop productivity (r=0.39). TIII tended to reduce N min (12.1 mg/L) and N total (12.8 mg/L) concentrations in drainage water and leaching of these elements (7 and 8 kg/ha). N min and N total concentrations in the water depended on crop productivity respectively (r=0.48; r=0.36), quantity of mineral soil N (r=0.65; r=0.59), fertilisation (r=0.59; r=0.52), and N balance (r=0.26; r=0.35). Cereal crop rotation increased N leaching by 12-42%. The use of all crop rotations resulted in a negative N balance. Nitrogen balance depended on fertilisation with N fertiliser (r=0.55). The application of perennial grasses crop rotation in agricultural fields was the best environmental tool, reducing N migration to drainage.

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Section: Discussionsupporting

confidence: 86%

Nitrogen migration in crop rotations differing in fertilisation

Gužys

Misevičienė

2015

Span. j. agric. res.

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“…Positive relationship between NDVI values at anthesis and grain yield was probably the result of high association between NDVI values and crop biomass, as previously reported in different studies (Aparicio et al, 2000;Moges et al, 2005). Moreover, grain yield in tworowed barley is the result of establishing high number of spikes per unit area (Mirosavljevic et al, 2018), and increase in crop biomass is associated with improvement of spike number (Křen et al, 2014). Also, Prado et al (2017) reported that high biomass was positively related with grain yield in wheat and barley.…”

Section: Relationship Among Studied Traitssupporting

confidence: 60%

Variation in NDVI values and relationship with grain yield in two-rowed winter barley

Mirosavljević¹,

Momčilović²,

Čanak³

et al. 2018

Ratar i povrt

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The simple methods used for indirect biomass determination are recognized as potentially important tools for crop growth prediction. The normalized difference vegetation index (NDVI) is widely used for assessing crop biomass, yield, photosynthesis, and nitrogen management. Aims of this study were to determine the variation in NDVI values and relationship of the NDVI with the most significant agronomic properties in the elite genotypes of two-rowed winter barley. The experiment included elite two-rowed winter barley genotypes and was carried out in two growing seasons. NDVI were measured at mid-anthesis, while grain yield and grain yield components were determined from combine harvested samples at maturity. Results from this study showed that the influence of genotype was mainly responsible for variation in most studied traits. Grain yield of two-rowed barley cultivars was more related to high grain number per unit area than to grain weight. NDVI values at anthesis in both growing seasons were positively associated with grain yield (R 2 = 0.444 and R 2 = 0.386), grain number (R 2 = 0.387 and R 2 = 0.507) and plant height (R 2 = 0.352 and R 2 = 0.364), while relationship with grain weight was not significant. Significant genotypic variation for NDVI values and the presence of significant positive relationship with grain yield and grain number indicated that NDVI measurement at anthesis could be efficiently used for indirect identification of productive two-rowed winter barley genotypes.

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“…These results suggest that the growth regulators, particularly azoxystrobin and trinexapac-ethyl, were able to partially eliminate the adverse effect of the year 2014, which was characterized by lower formation of productive tillers. Relatively dry weather and high temperatures during tillering in 2014 (Table 1) were probably the cause of accelerated plant development and reduced number of strong tillers able to form productive stems (Křen et al 2014). Similarly to grain yield the inter-annual differences in spike productivity were mostly reduced by the application of azoxystrobin.…”

Section: Resultsmentioning

confidence: 99%

Effect of application of growth regulators on the physiological and yield parameters of winter wheat under water deficit

Barányiová¹,

Klem²

2016

PLANT SOIL ENVIRON

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The objective of this study was to evaluate the effect of growth regulator applications on yield and physiological parameters of winter wheat (Triticum aestivum L.) under water deficit. Water deficit was induced artificially by using rain-out shelters in period between booting and late milk ripeness. The effect of growth regulators was evaluated in two contrast years in terms of yield formation (2014)(2015). In both years the water deficit caused a significant reduction of grain yield. The negative effect of water deficit was partly alleviated by application of growth regulators. However, the effect of individual growth regulators varied depending on year. In favourable conditions for grain filling (2014) the alleviating effect was more pronounced in application of azoxystrobin which slows down the leaf senescence. On the contrary, in the year with suitable conditions for tillering (2015), the alleviating effect was most apparent in application of chlormequate-chloride. The applications of trinexapac-ethyl and ethephon showed small reduction of negative effect of water deficit consistently in both years. The CO 2 assimilation rate and stomatal conductance were recovered particularly by applications of chlormequate-chloride and azoxystrobin. Chlorophyll content and chlorophyll fluorescence parameters were more affected by water deficit in 2014, and the alleviating effect of growth regulators corresponded with yield response.

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Yield and grain quality of spring barley as affected by biomass formation at early growth stages

Cited by 27 publications

References 11 publications

Nitrogen migration in crop rotations differing in fertilisation

Nitrogen migration in crop rotations differing in fertilisation

Variation in NDVI values and relationship with grain yield in two-rowed winter barley

Effect of application of growth regulators on the physiological and yield parameters of winter wheat under water deficit

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