Nitrogen content and uptake by spring wheat and undersown Persian clover depending on plant density

Wanic, M.; Orzech, Krzysztof; Myśliwiec, Monika; Michalska, M.

doi:10.5601/jelem.2015.20.2.892

Cited by 4 publications

(11 citation statements)

References 19 publications

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“…During oat maturation (mid-July to early August), the redistribution of accumulated assimilated materials in plants resulted in a decrease (2019) or a marginal variation (2018) in the aboveground mass of oats. A number of researchers have observed a decline in cereal competition at the end of the plant growth period [7]. During this period, favourable conditions are created for the plants of the lower crop level to grow.…”

Section: Discussionmentioning

confidence: 99%

“…Annual EC developed most intensively, demonstrating the highest mass. A previous study [7] indicated that the highest competition between spring wheat and annual Persian clover (Trifolium resupinatum L.) occurs when cereals are in the stem elongation stage (BBCH 31-32); the mass of annual clover decreases twice during the entire growth period. Contrary to Barilli et al [10] and Sharpe et al [24] the aboveground mass of BM was the lowest in intercrop.…”

Section: Discussionmentioning

confidence: 99%

“…Farmers often intercrop forage legumes into winter or spring cereals as a way to increase crop diversity and increase labile nitrogen pools [6]. This intercropping system works particularly well because of the different phenologies of the two crops, which minimises light competition, as well as differences in nutrient acquisition [7]. Intercropping can allow better use of subsoil resources, and thereby decrease the need for resource input and help avoid nutrient losses [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Competition Effects and Productivity in Oat–Forage Legume Relay Intercropping Systems under Organic Farming Conditions

2021

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Cereal-legume intercropping is important in many low-input agricultural systems. Interactions between combinations of different plant species vary widely. Field experiments were conducted to determine yield formation regularities and plant competition effects of oat (Avena sativa L.)–black medick (Medicago lupulina L.), oat–white clover (Trifolium repens L.), and oat–Egyptian clover (T. alexandrinum L.) under organic farming conditions. Oats and forage legumes were grown in mono- and intercrops. Aboveground dry matter (DM) measured at flowering, development of fruit and ripened grain, productivity indicators, oat grain yield and nutrient content were established. The results showed that oats dominated in the intercropping systems. Oat competitive performance (CPo), which is characterized by forage legumes aboveground mass reduction compared to monocrops, were 91.4–98.9. As the oats ripened, its competitiveness tendency to declined. In oat–forage legume intercropping systems, the mass of weeds was significantly lower compared to the legume monocrops. Oats and forage legumes competed for P, but N and K accumulation in biomass was not significantly affected. We concluded that, in relay intercrop, under favourable conditions, the forage legumes easily adapted to the growth rhythm and intensity of oats and does not adverse effect on their grain yield.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Competition Effects and Productivity in Oat–Forage Legume Relay Intercropping Systems under Organic Farming Conditions

2021

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“…Bergkvist [31], and Schmidt and Curry [36] indicate the movement of nitrogen from clover plants to cereals. In our own research, it led to an increase in N content in wheat [37], which improved its condition and caused the reduction in the vegetative aboveground biomass not to be high, while in the roots this was not found or its positive effects were reported.…”

Section: Discussionmentioning

confidence: 99%

“…When wheat entered the ripening stage, its leaves dried up and fell off, its roots were reduced in weight, and a transfer of assimilates from the vegetative parts to the ear took place [22,26,37]. Accordingly, its vital needs became small.…”

Section: Discussionmentioning

confidence: 99%

Interactions between spring wheat (Triticum aestivum ssp. vulgare L.) and undersown Persian clover (Trifolium resupinatum L.) depending on growth stage and plant density

et al. 2016

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ORIGINAL RESEARCH PAPER AbstractA pot experiment was conducted in the years 2010-2012. The competitive interactions between spring wheat and undersown Persian clover, depending on plant density have been established. The plants were grown in a mixture and in pure sowing at a higher density (according to the rules of proper agricultural practice) and at a density reduced by 20%. Based on measurements of dry matter in the aboveground parts and roots conducted at the wheat growth stages (BBCH) such as: leaf development (12-14), tillering (21-23), stem elongation (31-32), inflorescence emergence (54-56), and ripening (87-89), calculations of indicators such as: relative yield, relative yield total, competitive balance index and relative efficiency index, were performed. Competition between spring wheat and Persian clover continued from the wheat tillering stage until the end of vegetation. The strongest interactions were at the stem elongation stage (the plants competed for 95% of the growth factors), while at the end of vegetation the competition decreased slightly (it concerned 85% of the resources). The aboveground parts influenced one another with higher intensity than the roots. This was visible particularly well during the inflorescence emergence stage, during which the plants accumulated only 8% of the resources in the aboveground parts, while 89% was accumulated in the roots. Wheat proved to be the stronger competitor for the growth factors. It reduced by more than twice the increase in the biomass of Persian clover from tillering until the end of vegetation. In the mixture, the relative growth rate of the aboveground parts of clover was higher than in the case of wheat, while the growth rate of the roots was similar for both species. Plant density had no significant impact on the intensity of mutual interactions.

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Catch Crops: A Nutrient Reservoir in Post-Harvest Residues under Water Deficit

et al. 2021

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Undersowing catch crops (CCs) in cereals provides many environmental benefits and potentially contributes to building agricultural resilience to climate change. The increasing soil water deficit due to global warming is becoming a challenge for the sustainability of Central European agriculture. Some of the multiple functions of CCs may be altered under water shortage. Two pot experiments were conducted in Poland to assess the effect of water deficit on N, P, K, and Mg accumulated in post-harvest residues left by spring barley undersown with Italian ryegrass or red clover, and in the soil under these crops. In both experiments, barley grown alone provided a reference, and two levels of water supply were adopted: higher (sufficient for barley) and lower (reduced by 50%). Under water deficit, CCs undersown in spring barley maintained their function of capturing and storing nutrients. Post-harvest residues of barley undersown with CC and stressed with water shortage accumulated the same or higher amounts of N, P, K, and Mg than residues of barley grown alone under sufficient water supply. Soil nutrient contents were negatively correlated with crop biomass. Further research with other CC species and studies based on field experiments under rainout shelters are recommended.

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Nitrogen content and uptake by spring wheat and undersown Persian clover depending on plant density

Cited by 4 publications

References 19 publications

Competition Effects and Productivity in Oat–Forage Legume Relay Intercropping Systems under Organic Farming Conditions

Competition Effects and Productivity in Oat–Forage Legume Relay Intercropping Systems under Organic Farming Conditions

Interactions between spring wheat (Triticum aestivum ssp. vulgare L.) and undersown Persian clover (Trifolium resupinatum L.) depending on growth stage and plant density

Catch Crops: A Nutrient Reservoir in Post-Harvest Residues under Water Deficit

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