Impact of Irrigation Strategies on Tomato Root Distribution and Rhizosphere Processes in an Organic System.

ABSTRACT: Root exploitation of soil heterogeneity and microbially mediated rhizosphere nutrient transformations play critical roles in plant resource uptake. However, how these processes change under water-saving irrigation technologies remains unclear, especially for organic systems where crops rely on soil ecological processes for plant nutrition and productivity. We conducted a field experiment and examined how water-saving subsurface drip irrigation (SDI) and concentrated organic fertilizer application altered root traits and rhizosphere processes compared to traditional furrow irrigation (FI) in an organic tomato system. We measured root distribution and morphology, the activities of C-, N-, and P-cycling enzymes in the rhizosphere, the abundance of rhizosphere microbial N-cycling genes, and ro

SUBMITTER: Li M 

PROVIDER: S-EPMC7118217 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature