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Friday, March 23, 2018


Browse on keywords: legume nitrogen fixation pea

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Search results on 03/23/18

816. Bezdicek, D.. no date. (Influence of residual soil N on N2 fixation; N2 fixation of chickpeas). unpublished.
High levels of residual soil N decreased N2 fixation. There was a negative correlation between the fraction of plant N derived from N2 fixation and total mineralizable N and KCl extractable N. N2 fixation was reduced by about 2.8 kg/ha for each kg/ha of available soil N. Seed yield response from inoculation ranged from 5-70% and was negatively correlated with available soil N. Residual soil moisture in July was greatestfor large seeded legumes > forage legumes > winter wheat. T: N fixation in chickpeas.

3935. Mahler, R.L., D.F. Bezdicek, and R. Witters. 1979. Influence of slope position on nitrogen fixation and yield of dry peas.. Agronomy J. 71:348-351.
Total seasonal N2 fixation estimates: bottomland - 69; south slope - 22; ridgetop - 17 kg N/ha. Pea yields were 2100 kg/ha for the bottomland and 480 kg/ha for the ridgetop, and were related to soil moisture depletion of 22 cm and 9 cm respectively. Greater plant N and DM were obtained in the greenhouse when peas were inoculated with Rhizobium isolates from the north slope when compared to other isolates. T: soil water depletion

7833. Koala, S.. 1985. Effects of N and P fertilizers on the growth, nodulation, and N2 ixation of fababean, green pea, and dry bean.. PhD. Thesis, Dept. of Plant and Soil Sci., Montana St. Univ., Bozeman, MT 59717.

8907. Bremer, E., R.J. Rennie, and D.A. Rennie. 1988. Dinitrogen fixation of lentil, field pea and fababean under dryland conditions.. Can. J. Soil Sci. 68:553-562.
N15 was used to study the N-fixation of several grain legumes in Saskatchewan, with all major soil zones represented. Indigenous rhizobia were incapable of supporting adequate levels of N2 fixation at most sites. Inoculation increased total dry matter, total N, and N2 fixation of all legume cultivars tested. Annual rates of N2 fixation were as high as 75, 105, and 160 kg N/ha for lentil, pea, and fababean, respectively on gray and gray-black soils in one year, but declined by an average of 5.3, 7.6, and 10.5 kg N/ha, repsectively, for every cm reduction in moisture use. Fababean fixed the most N under wetter conditions, while pea and lentil fixed the most under drought stress conditions. The amount of N fixed was not significantly correlated with soil nitrate levels in either year, perhaps due to the overriding effects of moisture. Estimates of the % plant N derived from atmospheric fixation ranged from 30-80%, with fababean generally the highest. The % from atmosphere was negatively correlated to soil nitrate for pea and lentil.

10088. Cowie, A.L., R.S. Jessop and D.A. MacLeod. 1990. Effect of soil nitrate on the growth and nodulation of winter crop legumes.. Austral. J. Expt. Agric. 30:651-654..
The relative effect of increasing external nitrate supply on the nodulation of three winter crop legumes was examined in a controlled environment experiment. Lupin, chickpea and field pea were grown at two nitrate concentrations of 2 and 8 mmol/L for 40 days. Shoot and root growth were not affected by nitrate contrations. Increased nitrate concentrations significantly reduced nodule number and nodule weight in all species. The inhibition of nodulation by increased nitrate concentrations was greatest in peas, followed by chickpeas, and least in lupins.

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