WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Thursday, March 22, 2018


Browse on keywords: legume nitrogen chickpea

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Search results on 03/22/18

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 unpublished.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.

7786. Engel, R., L.E. Welty, R. Lockerman, J. Bergman, G. Kushnak, L. Prestbye, and J. Sims. 1987. Annual legumes and cereal grain rotations in Montana.. Montana AgResearch 4(3):1-4.
Montana researchers examined the performance of several grain legumes (dry pea, chickpea, lentil) and their effect on a subsequent barley crop. Dry pea production was the highest. A subsequent barley crop rsponded to added N fertilizer at three out of six sites. Barley yields following legumes were generally equal to or greater than yields following fallow. The annual legumes contributed to soil N and reduced the fertilizer N needed to reach maximum yield by 40-55 lb N/ac when compared to recrop barley. This translated into savings of $10-14/ac for fertilizer N.

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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