Changes in fine-root production, phenology and spatial distribution in response to N application in irrigated sweet cherry trees.

ABSTRACT: Factors regulating fine-root growth are poorly understood, particularly in fruit tree species. In this context, the effects of N addition on the temporal and spatial distribution of fine-root growth and on the fine-root turnover were assessed in irrigated sweet cherry trees. The influence of other exogenous and endogenous factors was also examined. The rhizotron technique was used to measure the length-based fine-root growth in trees fertilized at two N rates (0 and 60 kg ha(-1)), and the above-ground growth, leaf net assimilation, and air and soil variables were simultaneously monitored. N fertilization exerted a basal effect throughout the season, changing the magnitude, temporal patterns and spatial distribution of fine-root production and mortality. Specifically, N addition enhanced th

SUBMITTER: Artacho P 

PROVIDER: S-EPMC4886287 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature