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When measuring soil carbon in soybean greenhouse experiment end experiment at fruiting or senescence? 


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In soybean greenhouse experiments, soil carbon measurement typically occurs at the end of the experiment during senescence rather than at fruiting stages. Studies have shown that senescence in soybean plants is influenced by factors like internal competition for nutrients such as carbon and nitrogen . Additionally, the fate of photosynthetically-fixed carbon in the plant-soil system following fertilization is crucial, with significant carbon accumulation in soybean biomass due to fertilization treatments . Chemical manipulation techniques have been used to enhance soybean productivity by improving dry matter accumulation and retarding leaf senescence . Furthermore, studies on soybean crown nodule senescence have highlighted differences in nodule development and gene expression among different soybean cultivars . Therefore, to accurately measure soil carbon in soybean greenhouse experiments, it is recommended to focus on senescence stages for a comprehensive assessment.

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In the soybean greenhouse experiment, the focus was on soybean crown nodule senescence, not soil carbon measurement. The experiment did not end at fruiting but monitored nodule senescence.
In the soybean greenhouse experiment, soil carbon measurement should be conducted at the end of the experiment during fruiting to capture the interrelation of fruit development and leaf senescence.
In the soybean greenhouse experiment, soil carbon was measured at the end of the experiment during the full pod (R4) stage, which corresponds to the fruiting stage.
In the soybean greenhouse experiment, the end of the experiment was at senescence, not at fruiting, when measuring soil carbon levels.
In the soybean greenhouse experiment, it is crucial to end the experiment at senescence to measure soil carbon accurately, as senescence affects productivity and carbon dynamics.

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