Width of clover strips and wheat rows influence grain yield in winter wheat/white clover intercropping

Thorsted, Marian D.; Olesen, Jørgen E.; Weiner, Jacob

doi:10.1016/j.fcr.2005.04.001

Cited by 56 publications

(67 citation statements)

References 20 publications

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“…Carof et al [20] demonstrated that deep-reaching roots give an advantage to wheat over clover. This is confirmed by the studies of Thorsted et al [19] who showed that wheat is a stronger competitor for soil resources and gains more of these resources than clover. Ofori and Stern [35] consider cereals as stronger competitors than legumes, mainly because of their faster growth rate and higher root density, as evidenced in the present study.…”

Section: Discussionsupporting

confidence: 78%

“…However, in our own research the undersown crop had the most limiting influence on grain yield, which was significantly lower than in pure sowing [22]. A reduction in the grain yield of winter wheat growing in combination with white clover was also noted in the study of Thorsted et al [19]. Bergkvist [31] is of the opinion that a higher yield of wheat should not be expected when it grows in combination with while clover, because of the fact that it cannot assimilate growth factors (mainly N) from the soil as efficiently as in pure sowing.…”

Section: Discussionsupporting

confidence: 67%

“…These interactions affect plant density, plant development rhythm, morphological features as well as productivity and fertility [18]. The intensity and direction of the above-mentioned changes depend on the choice of partner species (and varieties), the abundance of habitat, plant growth stage, and plant density [12,19]. A series of papers on such interactions between main crops and undersown crops have recently been published [11,13,20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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Section: Discussionsupporting

confidence: 78%

Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…However, in order to mimic agricultural practises the raw materials used was produced on a farmer's field where clover-grass was undersown in winter wheat [24].…”

Section: Raw Materialsmentioning

confidence: 99%

Sustainable bioethanol production combining biorefinery principles using combined raw materials from wheat undersown with clover-grass

Thomsen

Haugaard-Nielsen

2008

J Ind Microbiol Biotechnol

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To obtain the best possible net energy balance of the bioethanol production the biomass raw materials used need to be produced with limited use of non-renewable fossil fuels. Intercropping strategies are known to maximize growth and productivity by including more than one species in the crop stand, very often with legumes as one of the components. In the present study clover-grass is undersown in a traditional wheat crop. Thereby, it is possible to increase input of symbiotic fixation of atmospheric nitrogen into the cropping systems and reduce the need for fertilizer applications. Furthermore, when using such wheat and clover-grass mixtures as raw material, addition of urea and other fermentation nutrients produced from fossil fuels can be reduced in the whole ethanol manufacturing chain. Using second generation ethanol technology mixtures of relative proportions of wheat straw and clover-grass (15:85, 50:50, and 85:15) were pretreated by wet oxidation. The results showed that supplementing wheat straw with clover-grass had a positive effect on the ethanol yield in simultaneous saccharification and fermentation experiments, and the effect was more pronounced in inhibitory substrates. The highest ethanol yield (80% of theoretical) was obtained in the experiment with high fraction (85%) of clover-grass. In order to improve the sugar recovery of clover-grass, it should be separated into a green juice (containing free sugars, fructan, amino acids, vitamins and soluble minerals) for direct fermentation and a fibre pulp for pretreatment together with wheat straw. Based on the obtained results a decentralized biorefinery concept for production of biofuel is suggested emphasizing sustainability, localness, and recycling principles.

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“…Optimal row spacing is one of several important agronomic approaches that can be used to enhance wheat yield (Thorsted et al, 2006;Hussain et al, 2013). Inefficient utilization of available resources by plants, particularly severe inter-row competition among plants in narrow rows and inefficient utilization of natural resources such as light, water, nutrients etc.…”

mentioning

confidence: 99%

Weed Studies and Productivity of Wheat under Various Planting Techniques and Weed Management Practices

Devi¹,

Singh²,

Kamboj³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Width of clover strips and wheat rows influence grain yield in winter wheat/white clover intercropping

Cited by 56 publications

References 20 publications

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

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

Sustainable bioethanol production combining biorefinery principles using combined raw materials from wheat undersown with clover-grass

Weed Studies and Productivity of Wheat under Various Planting Techniques and Weed Management Practices

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