Modelling early growth under different sowing conditions: A tool to predict variations in intercrop early stages

Fayaud, Benoit; Coste, Françoise; Corre-Hellou, Guénaëlle; Gardarin, Antoine; Dürr, Carolyne

doi:10.1016/j.eja.2013.09.009

Cited by 28 publications

(28 citation statements)

References 37 publications

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“…Planting date for a cover crop usually depends on the species characteristics, discretion of growers, and weather conditions (Fayaud et al, 2014). Research has shown that planting cover crops in fall or spring influenced production of cover crop biomass and thus affected subsequent weed suppression; mostly, the earlier planting date resulted in greater weed suppression (Saini et al, 2006;Anugroho et al, 2009;Wells et al, 2016;Sturm et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Impact of Cover Crop Management on Level of Weed Suppression: A Meta‐Analysis

et al. 2019

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We conducted a previous systematic and meta‐analysis review that showed differences in results from studies that evaluated the effectiveness of cover crops for weed suppression in cropping systems; these differences were largely due to management approaches used in growing the cover crop and main crop. The current meta‐analysis provides a quantitative review on how cover crop and main crop management practices influence the impact of cover crops on weed suppression. The meta‐analysis used observations from 53 studies published from 1990 to 2018. Cover crop biomass was inversely related to the amount of weed biomass (r2 = 0.67) and weed density (r2 = 0.64). In general, the meta‐analysis shows that cover crops provided a range of weed suppression depending on management decisions such as choice of cover crop species, cover crop sowing season (fall or spring), sowing dates within seasons, seeding rate, termination date, delay in main crop planting date after cover crop termination, tillage system under which the cover crop was produced, and integrating the cover crop with other weed control inputs. For example, grass cover crop species provided greater weed suppression than broadleaf species. Fall‐sown cover crops provided greater weed suppression (weighted mean of response ratio [R*] = 0.19) than spring‐sown cover crops (R* = 0.48) by the summer. Weed suppression increased by increasing seeding rate of cover crops from 1× (R* = 0.50) to 2× (R* = 0.27) or 3× (R* = 0.10). In addition, cover crops provided greater weed suppression in reduced tillage systems (R* = 0.19) than no tillage (R* = 0.29). The differential weed suppression provided by these management approaches suggests that a cover crop management approach should be rightly selected for weed suppression benefits.

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Section: Introductionmentioning

confidence: 99%

Impact of Cover Crop Management on Level of Weed Suppression: A Meta‐Analysis

et al. 2019

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“…Under such circumstances, from the very first growing phase, TIC wheat can benefit from the well-known Table 4. Overall, cumulated, leached NO 3 -N (kg ha -1 ) below a depth of 0.9 m and the percentage lost before the faba bean (FB) incorporation into the soil in 2010 and 2011. early stage advantages (Benincasa et al, 2012;Fayaud et al, 2014), whereas faba bean, impaired by a competitive cereal effect, will be pushed to take N for its growth from the atmosphere (Jensen, 1996), and such N will become available once again for the cereal after legume incorporation into the soil (i.e., green manure effect). As observed in several other intercropping studies (Ghaley et al, 2005), the low soil mineral N level emphasizes the beneficial effect of cereal-legume intercropping.…”

Section: Competitive Interaction Betweenmentioning

confidence: 99%

Nitrogen Fertilization Strategies for Organic Wheat Production: Crop Yield and Nitrate Leaching

et al. 2016

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Nitrogen fertility management represents a crucial aspect for common wheat (Triticum aestivum L.) production, particularly when we deal with organic agriculture. Th is study was conducted to determine the eff ect of fi ve N fertilization strategies on yield, grain protein content, and N leaching risk. In a 3-yr fi eld experiment, a faba bean/wheat temporary intercropping (TIC) and four fertilization treatments with extra-farm N sources were compared. Extra-farm N sources were represented by blood meal (BM) and roasted leather (RL) (broadcast all-at-once at seeding or split into one-half at seeding and one-half at tillering in a side-dressing application). Unfertilized and mineral fertilized controls were included. Th e eff ect of the legume on TIC wheat N uptake was always positive while dry weight accumulation and yield were generally poorly aff ected. Regardless of the broadcasting method, BM treatments generally showed a slightly higher yield and grain protein content compared to wheat fertilized with roasted leather (this was also confi rmed by fertilizer release effi ciency). Th e risk of N leaching was maximum at the onset of drainage (i.e., during the fi rst phase of crop growth), so using organic fertilizers at preseeding stage appeared to be a very risky practice, especially if quick-N-releasing ones are used. Splitting the organic fertilizer rate avoided a large amount of mineralized N to be leached in the watershed during the critical stage of drainage onset. Th e TIC was the best option in terms of environmental preservation, and assured a constantly higher grain protein content compared to the other organic fertilization treatments.

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“…Zhang and Lamb (2012) found that early differences between species for competitive effect did not vary substantially with plant age. As suggested by Fayaud et al (2014), a better understanding of early growth in intercrop systems could help to adapt management practices to attain specific objectives, such as proper proportion of each species in terms of grain yield. Nevertheless, other mechanisms, such as competition for light and differing phenologies, may in turn alter the competitive balance of plants and of the intercrop system.…”

Section: Discussionmentioning

confidence: 99%

“…It has also been shown that species can exhibit plasticity in their traits associated with N uptake in response to intercropping (Liu et al 2015). Early growth is of key importance in the onset and subsequent dynamics of interactions in intercrops (Tofinga et al 1993; Andersen et al 2007; Corre-Hellou et al 2007; Naudin et al 2010; Fayaud et al 2014). Several studies have shown that cereals outcompete legumes in cereal–legume intercrops, but the differences in N acquisition strategies in relation to root traits and seed characteristics during the early growth phase between legumes and cereals have not been studied.…”

Section: Introductionmentioning

confidence: 99%

Differences for traits associated with early N acquisition in a grain legume and early complementarity in grain legume–triticale mixtures

et al. 2018

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We grew a grain legume in rhizotrons, alone and mixed with a cereal. There were differences between some of the genotypes of the grain legume but they all demonstrated slow early growth and low ability to absorb mineral soil nitrogen compared to the cereal. The two species were complementary for nitrogen acquisition in the first 2 months of growth. Mixtures showed a higher total soil mineral nitrogen uptake than pure grain legume. Complementarity allowed higher cereal biomass production than in pure cereal, without compromising grain legume growth.

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Modelling early growth under different sowing conditions: A tool to predict variations in intercrop early stages

Cited by 28 publications

References 37 publications

Impact of Cover Crop Management on Level of Weed Suppression: A Meta‐Analysis

Impact of Cover Crop Management on Level of Weed Suppression: A Meta‐Analysis

Nitrogen Fertilization Strategies for Organic Wheat Production: Crop Yield and Nitrate Leaching

Differences for traits associated with early N acquisition in a grain legume and early complementarity in grain legume–triticale mixtures

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