Nitrogen Fixation by Peas and Their Effect on Soil Fertility

Askin, D. C.; White, J. G. H.; Rhodes, P.J.

doi:10.1016/b978-0-407-00922-6.50043-x

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…Although the maximum symbiotic fixation rate has been proposed to occur at the beginning of seed filling [77] there is a high variability concerning the fixation pattern in peas and fixation maximum can range from the beginning of flowering up to seed filling [4]. The maximum symbiotic fixation rate differs according to the varieties but the duration during which the crop fixes N symbiotically may be rather stable for a given sowing date [12]: delaying the sowing date reduced the duration of the N 2 fixation period while a delayed flowering did not affect N 2 fixation which continued during seed filling [12].…”

Section: Symbiotic Fixation Activity During Seed Fillingmentioning

confidence: 99%

Grain legume seed filling in relation to nitrogen acquisition: A review and prospects with particular reference to pea

Salon¹,

Munier-Jolain²,

Duc³

et al. 2001

Agronomie

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Section: Symbiotic Fixation Activity During Seed Fillingmentioning

confidence: 99%

Grain legume seed filling in relation to nitrogen acquisition: A review and prospects with particular reference to pea

Salon¹,

Munier-Jolain²,

Duc³

et al. 2001

Agronomie

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“…It is therefore advisable to use the lowest possible sowing rate when weed pressure is low because of compensatory effects of yield components. This is important as the greatest cost of pea production is the cost of seed [13]. The significant (p < 0.05) herbicide by population interaction on mean seed yield in 2006/07, indicated that herbicide had no effect on seed yield at 100 and 400 plants m -2 but did at 50 plants m -2 .…”

Section: Discussionmentioning

confidence: 99%

Yield Response to Pea (Pisum sativum L.) Genotype, Population and Sowing Date

Munakamwe¹

2012

TOASJ

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This research objective was to examine the effect of herbicide, genotype, population and sowing date on crop yield and weed growth in Pisum sativum. In 2007/08, cyanazine treated peas had a mean seed yield of 508 g m-2 , 19% more than in unsprayed plots. There was a significant sowing date by pea genotype interaction which showed that in the August sowing genotype had no effect on seed yield. However, in September Pro 7035 yielded 559 g m-2 , which was 40% more than Midichi. By the October sowing, it was 87% more. There was a distinct variation in weed spectrum, over time. It can be concluded that fully leafed peas and semi-leafless can be sown at similar plant populations and give similar yields under weed free conditions and that increased pea sowing rates increased total dry matter and seed yield in weedy environments. Fully leafed peas yielded more than semi-leafless peas when both were late sown. Increased pea sowing rate improved weed suppression.

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Nitrogen Balance of Field Pea Crops in South Western Australia, Studied Using the 15N Natural Abundance Technique

Armstrong¹,

Pate²,

Unkovich

1994

Functional Plant Biol.

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The nitrogen economies of six contrasting field pea (Pisum sativum L.) genotypes were examined at three widely separated sites in south Western Australia, using the 15N natural abundance technique to asssess proportional dependence on fixed N, harvests at peak biomass to assess total N yields and harvests at crop maturity to examine partitioning of N between seed and non harvested crop residues. The budgets for one site (Wongan Hills) included N of nodulated roots which on average comprised 12% of total plant N at peak crop biomass and 25% of recoverable plant N after harvest of seed. At this site maximum potential (residual) benefits to a following crop (peak total plant biomass N - N uptake from soil and N taken off as harvested seed) varied between genotypes from 8 to 41 g N ha-1 (mean 26; n = 6). Data for the other two sites, based solely on N budgets of above-ground parts, provided evidence of substantial site- and genotype-specific differences in N balance in terms of shoot residues (i.e. + 7 to - 24 kg N ha-1 (mean - 5) at Avondale, + 40 to - 29 (mean + 3) at Mt Barker). The results collectively indicated a general relationship between peak biomass N of a crop and its potential or otherwise to effect a net input of residue N to the ecosystem. There were, however, considerable variations between genotypes and sites due to differences in proportional dependence on fixation (range across all sites and genotypes 60-91%) and crop harvest indices for N (corresponding range 53-90%). Correlation plots were constructed from the data for N2 fixed against crop dry matter yield and residual nitrogen benefit against nitrogen harvest index. Results are discussed in relation to values for N balance of field pea and other grain legumes obtained elsewhere by other investigators.

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Nitrogen Fixation by Peas and Their Effect on Soil Fertility

Cited by 4 publications

References 30 publications

Grain legume seed filling in relation to nitrogen acquisition: A review and prospects with particular reference to pea

Grain legume seed filling in relation to nitrogen acquisition: A review and prospects with particular reference to pea

Yield Response to Pea (Pisum sativum L.) Genotype, Population and Sowing Date

Nitrogen Balance of Field Pea Crops in South Western Australia, Studied Using the 15N Natural Abundance Technique

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