The Effects of Drought and Nitrogen on Light Interception, Growth and Yield of Winter Oilseed Rape

Andersen, M. N.; Heidmann, Tove; Plauborg, Finn

doi:10.1080/09064719609410947

Cited by 28 publications

(34 citation statements)

References 26 publications

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“…When considering only the two higher doses of applied N, 80 to 160kg ha -1 (Figure 2b), the extinction coefficient for PAR was 0.46, somewhat higher than the average coefficient for all doses of N together (Figure 2a). Even so, this value is slightly lower than that reported by ANDERSEN et al (1996) andFRAY et al (1996) for conventional winter canola genotypes, but greater than the coefficient reported by FRAY et al (1996) for a genotype with more upright siliques. This shows that, for spring canola cultivated in conditions of southern Brazil, there is more interception of PAR by reproductive structures in non-limiting levels of available nitrogen, due to a higher production of reproductive structures, than for low levels of nitrogen.…”

Section: Resultscontrasting

confidence: 61%

“…This value is 12% lower than that reported in winter canola by ANDERSEN et al (1996) andFRAY et al (1996), also for the reproductive structures, which was 0.5. However, it is 9% higher than that reported by FRAY et al (1996) for winter canola with more upright siliques.…”

Section: Resultscontrasting

confidence: 58%

“…In this subject, two studies were reported in the literature, aiming to determine the extinction coefficient of reproductive structures for winter canola. In one of those studies, ANDERSEN et al (1996) reported an average coefficient of 0.5. In the other FRAY et al (1996), quantified the k coefficient for two genotypes, being one with conventional architecture and another with erect siliques.…”

Section: Introductionmentioning

confidence: 98%

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Interception of solar radiation by the productive structures of spring canola hybrids

et al. 2016

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The objective of this study was to adjust parameters related to the interception of photosynthetically active radiation (PAR) by reproductive structures of spring canola, with different nitrogen levels and hybrids. Two field experiments were conducted, being one with different sowing dates and hybrids (Hyola 61 and Hyola 432) and another with doses of 10, 20, 40, 80, 160kg ha -1 of N, applied in top dressing. They were conducted in Passo Fundo and Coxilha, RS, Brazil, in 2011 and 2014, respectively

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Section: Resultscontrasting

confidence: 61%

Section: Resultscontrasting

confidence: 58%

Section: Introductionmentioning

confidence: 98%

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Interception of solar radiation by the productive structures of spring canola hybrids

et al. 2016

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“…Decrease of 1000 seed weight is due to decline of water and nutrients absorption by plant and then decrease of assimilation and assimilates transport to seed. Effect drought stress on winter canola has been studied by Andersen et al (1996); it observed that, pod number in plant, seed number in pods and seed yield were significantly decreased by drought stress while 1000 seed weight was decreased by drought stress at flowering seed filling stages. Oil percentage was decreased by drought stress it seems that, reduces of photosynthesis and assimilates remobilization reasons decrease of oil.…”

Section: Resultsmentioning

confidence: 99%

Effect of Zeolite and Foliar Application of Selenium on Growth, Yield and Yield Component of Three Canola Cultivar under Conditions of Late Season Drought Stress

Zahedi

Noormohammadi

Rad³

et al. 2009

Not Sci Biol

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In order to study effect of zeolite soil application and selenium foliar application on growth, yield and yield components of three canola cultivar under conditions of late season drought stress an experiment was conducted in two growing season in 2006 and 2007. Site study was field of Seed and Plant Improvement Institute, Karaj, Iran. The experimental design was a Randomized Complete Block arrangement in factorial split plot with three replications. Irrigation factors were chosen at two levels, included complete irrigation and irrigation holding at stem elongation stage. Zeolite was used at two levels, non application and 10 ton per hectare. Also selenium was sprayed at three concentrations, 0, 15 and 30 gr per liter from sodium selenate. These treatments were randomized in main plots while three canola cultivars ('Zarfam' , 'Okapi' and 'Sarigol') were randomized in sub plots. The results showed that, main effects of different irrigation levels have significant effect on all traits and drought stress decreased significantly all traits. Foliar application of selenium had significant and additive effect on plant height, number of pods in plant, number of seeds in pod, seed yield, biological yield, harvest index and oil yield. There was significant difference between zeolite application and non application on all traits except oil percent and harvest index. It was shown that canola cultivars were different in all of studied traits. Comparison of means showed that, four critical traits that is seed yield, biological yield, harvest index and oil yield were affected by experimental treatments. Different cultivars have different responses under unlike conditions inside upon traits. Under different treatment conditions especially drought stress, zeolite and selenium application have positive and significant effect on traits related to yield. In finally, zeolite and selenium application in dry lands that are exposure to late season drought stress can be helpful for yield improvement and prevent of decreasing yield.

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“…The crop specific k PAR value for maize was calculated from the GAI data and the measured fraction of non-intercepted diffuse radiation (DIFN data) measured by the LAI-2000 device, according to [36]. For wheat, k PAR was taken from [37], for mustard a k PAR value of oilseed rape was taken from [38] assuming that it is also valid for mustard, for Italian ryegrass a value from [39] and for perennial ryegrass from [39] and [40] were taken ( Table 2).…”

Section: Crop Growthmentioning

confidence: 99%

Evaluating Bioenergy Cropping Systems towards Productivity and Resource Use Efficiencies: An Analysis Based on Field Experiments and Simulation Modelling

et al. 2018

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Silage maize (Zea mays L.) is the dominating energy crop for biogas production due to its high biomass yield potential, but alternatives are currently being discussed to avoid environmental problems arising from maize grown continuously. This study evaluates the productivity and resource use efficiency of different bioenergy crops and cropping systems using experimental and simulation modelling derived data. The field experiment consisted of two years, two sites differing in soil texture and soil water availability, different cropping systems and increasing nitrogen (N) supply. Continuous (two years) perennial ryegrass and two crop rotations including winter cover crops (double cropping system) and combining C4 and C3 crops were compared with continuous maize (maize-maize). The productivity of the crops and cropping systems in terms of dry matter (DM) yield was analyzed with respect to the fraction of light interception and light use efficiency (LUE). In addition, water use and water use efficiency (WUE), N uptake, and N use efficiency (NUE) were quantified. DM yield of the double cropping system was similar to that of continuous maize, due to a prolonged leaf area duration, compensating for the intrinsic lower LUE of C3 crops. Perennial ryegrass was less productive than the other crops/cropping systems. Nitrogen uptake and consequently N demand of perennial ryegrass and the C3 crops of the crop rotations were higher than for maize-maize. Groundwater recharge was mainly site-dependent, but was at both sites higher for maize than for the crop rotations or the perennial ryegrass system. Our results indicate that, in terms of biomass productivity, optimized rotations are feasible alternatives to maize-maize, but trade-offs exist in terms of water and N use efficiency.

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The Effects of Drought and Nitrogen on Light Interception, Growth and Yield of Winter Oilseed Rape

Cited by 28 publications

References 26 publications

Interception of solar radiation by the productive structures of spring canola hybrids

Interception of solar radiation by the productive structures of spring canola hybrids

Effect of Zeolite and Foliar Application of Selenium on Growth, Yield and Yield Component of Three Canola Cultivar under Conditions of Late Season Drought Stress

Evaluating Bioenergy Cropping Systems towards Productivity and Resource Use Efficiencies: An Analysis Based on Field Experiments and Simulation Modelling

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