By Gudni Hardarson (auth.), F. A. Bliss, G. Hardarson (eds.)
The universal bean (Phaseolus vulgaris L.) is an important pulse crop in Latin the United States, in addition to in huge elements of Asia and Africa. it's relatively very important as a result of its skill, in symbiosis with Rhizobium micro organism, to mend atmospheric nitrogen and because of its excessive nutrient value.
Incorporating contributions from plant breeders, microbiologists, plant physiologists and soil scientists, this quantity experiences the result of an FAO/IAEA Coordinated study Programme (1985--1991), whose major aim used to be to augment yield and organic nitrogen fixation in universal bean by way of decreasing its reliance on soil and fertilizer nitrogen.
the amount may be precious to scientists engaged on organic nitrogen fixation and legume production.
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Additional resources for Enhancement of Biological Nitrogen Fixation of Common Bean in Latin America: Results from an FAO/IAEA Co-ordinated Research Programme, 1986–1991
This is illustrated by the study of Ruschel et al. e. was ranked as the poorest N z fixer. Such a comparison is at best doubtful since those fixing crops harvested 30 days later continued to absorb soil N of continuously declining 15 N enrichment, and could eventually have contained lower 15N enrichments than the earlier-harvested plants even if they were not better fixers. Having several replicates of a given reference crop and harvesting some plots along with each legume harvest may not always be a satisfactory solution as suggested by the study of Patterson and LaRue (1983) in which the N accumulation rates of the earlier maturing soybean varieties (cv.
This is done by comparing the N yield increment within each growth interval as percentages of the final N yield (rather than using the cumulative N). The average deviations in N yield increments between legume and reference crops over the whole season is then calculated, and used to assess the magnitude of any error. Using this approach, Boller found frequent and large differences in the N uptake patterns of Trifolium repens and T. pratense and the pair, T. repens-Lolium perenne were better matched than a T.
Danso and F. Zapata, unpublished). The '5N-tagged forms of slow-release fertilizers, however, are not yet available commercially. Rennie (1986) and Rennie and Dubetz (1986) simulated a slow-release fertilizer formulation by mixing ('5NH4)zS04 with a nitrification rctarJing agent, N-scrvc (2-chloro-6-( trichloro-methyl)-pyridine), to successfully estimate N z fixed in field bean, chickpea, lentil, fababean and fieldpea. This is a simple approach, which is worth trying by others. The need for a stable soil R is less important /5 when the reference and fixing crops are well matched and/or when N 2 fixation is very high.
Enhancement of Biological Nitrogen Fixation of Common Bean in Latin America: Results from an FAO/IAEA Co-ordinated Research Programme, 1986–1991 by Gudni Hardarson (auth.), F. A. Bliss, G. Hardarson (eds.)