Soybean nitrogen fixation dynamics in Iowa, USA
نویسندگان
چکیده
منابع مشابه
Soil Organic Nitrogen Enrichment Following Soybean in an Iowa Corn–Soybean Rotation
Understanding soil organic N (ON) pool enrichment may help explain why rates of N fertilization required to attain maximum corn (Zea mays L.) yields are usually lower for corn following soybean [Glycine max (L.) Merr.] than for corn following corn. Our objectives were to quantify the ON pools within a 16-ha Iowa field and to correlate those results with corn yield. Spring and fall measurements ...
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The effects of a North Carolina population of Meloidogyne incognita on N fixation on root-knot-susceptible 'Lee 68' and moderately resistant 'Forrest' soybean were evaluated 50, 75, I00, and 135 days after inoculation with nematodes. Nematodes stimulated N fixation in Lee 68 by 50 days and in Forrest by 75 days. At all other intervals, N fixation was either depressed or unaffected by nematodes....
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1.1 Biological nitrogen fixation and nitrogen nutrition in soybean plants Biological nitrogen fixation is one of the most important processes for ecosystem to access available N for all living organisms. Although N2 consists 78% of atmosphere, but the triple bond between two N atoms is very stable, and only a few group of prokaryotes can fix N2 to ammonia by the enzyme nitrogenase. Annual rate ...
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The stabilization of host-symbiont mutualism against the emergence of parasitic individuals is pivotal to the evolution of cooperation. One of the most famous symbioses occurs between legumes and their colonizing rhizobia, in which rhizobia extract nutrients (or benefits) from legume plants while supplying them with nitrogen resources produced by nitrogen fixation (or costs). Natural environmen...
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ژورنال
عنوان ژورنال: Field Crops Research
سال: 2019
ISSN: 0378-4290
DOI: 10.1016/j.fcr.2019.03.018