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Dryland Soil Carbon Dynamics Under Alfalfa And Durum-Forage Cropping Sequences, Upendra M. Sainju, Andrew W. Lenssen
Dryland Soil Carbon Dynamics Under Alfalfa And Durum-Forage Cropping Sequences, Upendra M. Sainju, Andrew W. Lenssen
Andrew W. Lenssen
Forages grown in rotation with or without cereals to sustain dryland soil water content and crop production may influence C dynamics. We evaluated the effect of alfalfa (Medicago sativa L.) and durum (Triticum turgidum L.)-annual forage cropping sequences on above- (stems + leaves) and belowground (roots) biomass C inputs and dryland soil organic C (SOC), particulate total C (PTC), microbial biomass C (MBC), and potential C mineralization (PCM) at the 0–120 cm depth. Cropping sequences were continuous alfalfa (CA), durum-barley (Hordeum vulgare L.) hay (D-B), durum-foxtail millet (Setaria italica L.) hay (D-M), durum-Austrian winter pea (Pisum sativum L.)/barley mixture hay …