Radiation-use efficiency in leys: influences of growth period and clover proportion

Riesinger, Paul; Eckersten, Henrik; Torssell, Bengt; Forkman, Johannes

doi:10.1080/09064710802342368

Cited by 3 publications

(3 citation statements)

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“…For red clover, the temperature response of photosynthesis and nitrogen re-translocation were changed so that these processes would be faster at lower temperatures, while radiation use efficiency (RUE) was increased to further accelerate early biomass production (Table SM2.7, Figure SM2.7, and Figure SM2.8 in Paper III). The increase in RUE was motivated by findings in several previous studies in similar environments showing higher RUE than the default value (Jannink et al 1996;Singer et al 2007;Torssell et al 2007;Kiniry & Evers 2008;Riesinger et al 2009;Harbo et al 2022). Radiation use efficiency of all crops considered can vary greatly both within seasons and between years (Jannink et al 1996;Kiniry & Evers 2008;Riesinger et al 2009).…”

Section: Simulation Of the Crops And The System (Rq7)mentioning

confidence: 99%

“…The increase in RUE was motivated by findings in several previous studies in similar environments showing higher RUE than the default value (Jannink et al 1996;Singer et al 2007;Torssell et al 2007;Kiniry & Evers 2008;Riesinger et al 2009;Harbo et al 2022). Radiation use efficiency of all crops considered can vary greatly both within seasons and between years (Jannink et al 1996;Kiniry & Evers 2008;Riesinger et al 2009). However, in those studies RUE was rarely lower than 1.5 (APSIM red clover default value) and often approached 2, so an increase was considered realistic.…”

Section: Simulation Of the Crops And The System (Rq7)mentioning

confidence: 99%

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Leguminous service crops in cereal production at high latitudes : provision of ecosystem services and disservices from a novel intercropping system

Lagerquist

2023

Acta Universitatis Agriculturae Sueciae

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Service crops, crops grown to provide services such as soil protection, weed control, or nutrient capture and provision, can reduce the need for mineral fertilisers and intensive weed control. However, high biomass production is necessary in order for these services to be provided. This can be difficult to achieve at high latitudes (e.g. Sweden), where growing conditions are poor after main crop harvest, when service crops are usually sown. The aim of this thesis was to increase the understanding of service crop species choice and management on service and disservice delivery. Leguminous service crops were sown into oats in spring/early summer for early establishment of the service crop, and terminated in the following spring in winter wheat. The results showed that species sown at the same time as oats, rather than one month later, and which survived oat harvest and cold temperatures in winter, were best at suppressing weeds and increasing winter wheat yields, although they often also reduced oat yield in the establishment year. Presence of a productive service crop (>0.2 t dry weight (DW) per ha) reduced the occurrence of competitive-stress tolerant weed species, in favour of ruderal species, in the oat row and in combination with oat biomass >8 t DW ha-1 the occurrence of competitive perennial species was reduced. Modelling the system using APSIM NG revealed that the service crops mainly provided positive effects on the cropping system, in terms of increased winter wheat yield, increased soil carbon input and reduced losses of nitrogen and water during most of the study period. Drawbacks were reduced oat yield and increased nitrogen losses from winter wheat and in the fallow period after winter wheat. I conclude that the studied intercropping system has potential to provide services and reduce disservices, but that the system needs improvement. These improvements are mainly to ensure even establishment and good termination of the service crops.

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Section: Simulation Of the Crops And The System (Rq7)mentioning

confidence: 99%

Section: Simulation Of the Crops And The System (Rq7)mentioning

confidence: 99%

Leguminous service crops in cereal production at high latitudes : provision of ecosystem services and disservices from a novel intercropping system

Lagerquist

2023

Acta Universitatis Agriculturae Sueciae

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“…The actual herbage harvested by the farmers was projected from our biomass measurements with a grassland growth model (see Riesinger et al 2008). Driving variables in model application comprised daily means of air temperature, relative air humidity, and wind speed, and daily sums of incoming solar radiation, and precipitation.…”

Section: Soil and Herbage Datamentioning

confidence: 99%

Variability of herbage production in mixed leys as related to ley age and environmental factors: a farm survey

Riesinger¹,

Herzon²

2008

AFSci

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Influences of ley age, soil properties, and geographical location on the herbage production of red clover-grass leys were determined under practical conditions on 27 organic farms located in the southern and in the northwestern coastal regions of Finland. Averaged over one-, two-, and three-year-old leys the accumulated first and second cuts produced 7.12 t dry matter herbage ha-1 year-1, with a clover proportion of 34.8%. Herbage production declined with increasing ley age. The average proportion of clover increased from 26.4% in the first to 43.7% in the second cut but decreased with ley age. Within- and between-field variations of clover proportions markedly decreased from the first to the second cut and strongly increased with ley age, while changes in the variations of herbage production were less pronounced. Within-field variations of clover proportions in the first and in the second cuts were higher at lower proportions of clover. Herbage production was positively related with clover proportion. Soil properties had a major impact on clover proportion and herbage production, largely explaining also regional differences in ley growth. Amelioration of fields and, not at least, of less fertile sites within the same field seems to be a crucial requirement for higher and more even clover proportions and herbage yields.;

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Symbiotic nitrogen fixation in organically managed red clover–grass leys under farming conditions

Riesinger¹,

Herzon²

2010

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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Radiation-use efficiency in leys: influences of growth period and clover proportion

Cited by 3 publications

References 20 publications

Leguminous service crops in cereal production at high latitudes : provision of ecosystem services and disservices from a novel intercropping system

Leguminous service crops in cereal production at high latitudes : provision of ecosystem services and disservices from a novel intercropping system

Variability of herbage production in mixed leys as related to ley age and environmental factors: a farm survey

Symbiotic nitrogen fixation in organically managed red clover–grass leys under farming conditions

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