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Background and Aims Inoculation of legumes with effective N 2 -fixing rhizobia is a common practice to improve farming profitability and sustainability. To succeed, inoculant rhizobia must overcome competition for nodulation by resident soil rhizobia that fix N 2 ineffectively. In Kenya, where Phaseolus vulgaris (common bean) is inoculated with highly effective Rhizobium tropici CIAT899 from Colombia, response to inoculation i...
Elevated atmospheric CO 2 effects on biomass production and soil carbon in conventional and conservation cropping systemsNARA Subscribed
Increasing atmospheric CO 2 concentration has led to concerns about potential effects on production agriculture as well as agriculture's role in sequestering C. In the fall of 1997, a study was initiated to compare the response of two crop management systems (conventional and conservation) to elevated CO 2 . The study used a split‐plot design replicated three times with two management systems as main plots and two CO 2 levels...
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