Investigating the Importance of Optimal Soil Fertility in the Response of a Legume to Inoculation with Rhizobia
The nutrition of a nodulated legume is different from other plants because of the additional nutritional demand placed on the legume by the N2-fixing nodules. The efficiency of the symbiosis is affected by the levels of the various nutrients in the soil and variability in the response to inoculation. This experiment is designed to compare inoculation response in unamended soil (except for liming) and in soil fertilized to optimal levels. Inoculation response is evaluated using the three basic treatments: (1) inoculated, (2) plus-N without inoculation, and (3) no nitrogen without inoculation. Each of these treatments is set up at two different fertility levels. A multi-strain peat-based inoculant is used to study the effect of soil fertility on the competition of rhizobia for nodulation.
KeywordsMagnesium Sulfate Fertility Level Maximal Fertility Ammonium Molybdate Zinc Sulphate
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