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Short-Term Dynamics of Root- and Shoot-Derived Carbon from a Leguminous Green Manure

^a Ecole Superieure d'Ingenieurs et de Techniciens Pour l'Agriculture, 13, rue du Nord, 76000 Rouen, France
^b Department of Horticulture, Plant Science Building, Cornell University, Ithaca, NY 14853

View larger version (38K): [in a new window]   Fig. 1. Size distribution of new hairy vetch C from shoots and roots in particulate organic matter (POM) fractions and the clay and silt fraction prior to incorporation (12 May) and at the end of the growing season (7 October). Bars are the means of replicates ± SE

View larger version (30K): [in a new window]   Fig. 2. Free and occluded particulate organic matter (POM) derived from hairy vetch roots and shoots prior to incorporation (12 May) and at the end of the growing season (7 October). The means of replicates are shown ± SE

View larger version (24K): [in a new window]   Fig. 3. Respiration rate and precipitation events over the course of the growing season in microplots following hairy vetch incorporation and corn planting

View larger version (20K): [in a new window]   Fig. 4. Proportional contribution of three sources: (i) root-derived hairy vetch (HV) C, (ii) shoot-derived HV C, and (iii) corn root respiration to CO2 respired in microplots. Means of replicates ± SE are shown