The Respiratory Costs of Nitrogen Fixation in Soyabean, Cowpea, and White Clover

Ryle, Gilbert; Powell, C. E.; Gordon, A. R.

doi:10.1093/jxb/30.1.145

Cited by 121 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since nitrate uptake and N 2 fixation are negatively correlated in T. repens (Griffith et al 2000), clover might down-regulate N 2 fixation and compete with other plant species for N when mineral N levels in soil increase (Schwinning and Parsons 1996). This is advantageous, because the metabolic costs of N 2 fixation are greater than those of mineral N uptake (Ryle et al 1979) and because, by taking up mineral N, clover is decreasing N availability for competitors.…”

Section: Discussionmentioning

confidence: 99%

Effects of earthworms and organic litter distribution on plant performance and aphid reproduction

et al. 2003

View full text Add to dashboard Cite

Human management practices and large detritivores such as earthworms incorporate plant litter into the soil, thereby forming a heterogeneous soil environment from which plant roots extract nutrients. In a greenhouse experiment we investigated effects of earthworms and spatial distribution of (15)N-labelled grass litter on plants of different functional groups [ Lolium perenne (grass), Plantago lanceolata (forb), Trifolium repens (legume)]. Earthworms enhanced shoot and root growth in L. perenne and P. lanceolata and N uptake from organic litter and soil in all plant species. Litter concentrated in a patch (compared with litter mixed homogeneously into the soil) increased shoot biomass and (15)N uptake from the litter in L. perenne and enhanced root proliferation in P. lanceolata when earthworms were present. Growth of clover (T. repens) was rather independent of the presence of earthworms and organic litter distribution: nevertheless, clover took up more nitrogen in the presence of earthworms and exploited more (15)N from the added litter than the other plant species. The magnitude of the effects of earthworms and organic litter distribution differed between the plant species, indicating different responses of plants with contrasting root morphology. Aphid (Myzus persicae) reproduction was reduced on P. lanceolata in the presence of earthworms. We suggest that earthworm activity may indirectly alter plant chemistry and hence defence mechanisms against herbivores.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of earthworms and organic litter distribution on plant performance and aphid reproduction

et al. 2003

View full text Add to dashboard Cite

show abstract

“…It may be that rhizobium-dependent legume growth was Nlimited during the seedling stage but C-limited in more mature plants (Williams et al, 1981). Part of the limitation to growth associated with nitrogen fixation might be owing to greater light energy requirements of N:-fixation (Hunter et al, 1982;Ryle et al, 1979) and the slower development of active nodules compared to development of nitrate reducing capability.…”

Section: Discussionmentioning

confidence: 99%

Some effects of nitrate and light intensity on soybean root growth and development

Buttery

Stone

1988

Plant Soil

View full text Add to dashboard Cite

A field experiment was conducted to determine the effects of light intensity and nitrate nutrition on soybean (Glycine max (L) Merr.) root growth and development. Relative growth rates, total, root and nodule dry weights, and the rates of increase in the number of roots indicated that nitrogen fixation limited growth relative to that achieved with nitrate and that the response to nitrate increases with light intensity and varies with plant age. Nitrate increased with rate of taproot extension but light intensity had no effect.

show abstract

“…Thus, soil supply of N was abundant (77% contribution to total yield) in Wisconsin during 2011 and additional N was not needed. Previous research has found the process of BNF to be more energetically expensive in comparison to N assimilation (Finke et al, 1982;Minchin et al, 1981;Ryle et al, 1979;Sinclair, 2004). Therefore, soybean grown in conditions with a large supply of N from soil, residual sources, and/or fertilizer will allow more photosynthate to be available for dry matter production and/or protein accumulation rather than expenditure on BNF.…”

Section: Grain Yieldmentioning

confidence: 99%

Genetic Gain × Management Interactions in Soybean: II. Nitrogen Utilization

et al. 2014

View full text Add to dashboard Cite

Soybean [Glycine max (L.) Merr.] grain yield has annually increased nearly 23 kg ha−1, but the interaction of genetic advancement and improved agronomic practices has not been well quantified, including N utilization and fertilization. A field study with soybean cultivars released from 1923 to 2008 in maturity group (MG) II and MG III was conducted in multiple environments with a nonlimiting supply of fertilizer N to examine the main effects and interactions of N supply and release year on grain yield and seed quality. We hypothesized that grain yield and seed quality would be improved with the nonlimiting supply of N, especially for the modern cultivars. Supplemental N totaled 560 kg N ha−1 with 40% applied at planting and 60% applied at V5. Grain yield increased with release year in MG II (17.2 kg ha−1 yr−1). Application of N to MG II cultivars increased seed protein by 10 to 19.5 g kg−1 across all release years, but grain yield and seed oil was not affected. Grain yield gains of MG III cultivars fertilized with N was 27.4 kg ha−1 yr−1, which was 20% better than unfertilized (22.8 kg ha−1 yr−1). Application of N to MG III cultivars increased seed mass (11%) across release years with no changes in seed protein and oil. The nonlimiting supply of N increased seed protein across all release years in MG II cultivars, and the N supply from the soil and biological N fixation was insufficient to maximize grain yield in modern, MG III cultivars in the tested environments.

show abstract

The Respiratory Costs of Nitrogen Fixation in Soyabean, Cowpea, and White Clover

Cited by 121 publications

References 0 publications

Effects of earthworms and organic litter distribution on plant performance and aphid reproduction

Effects of earthworms and organic litter distribution on plant performance and aphid reproduction

Some effects of nitrate and light intensity on soybean root growth and development

Genetic Gain × Management Interactions in Soybean: II. Nitrogen Utilization

Contact Info

Product

Resources

About