Physiological and yield responses of purple coneflower (Echinacea purpurea (L.) Moench) to nitrogen sources at different levels of irrigation.

ABSTRACT: Echinacea purpurea (L.) is one of the most important medicinal plants in the world showing different biochemical reactions as affected by drought stress and nitrogen fertilizer. The purpose of this study was to determine the effect of nitrogen on soluble protein, enzyme activities, carotenoids metabolism, greenness and biological yield of the Echinacea purpurea under different levels of irrigation. The experiment was conducted in a research field in Iran during 2013-2015. Irrigation treatments included irrigation after 25, 50 and 75% soil water depletion, and nitrogen sources were no nitrogen (N), nitroxin, 40 kg N ha^-1, 40 kg N ha^-1 + nitroxin and 80 kg N ha^-1. Nitroxin is a biofertilizer including Azotobacter and Azospirillum.

SUBMITTER: Jalil Sheshbahreh M 

PROVIDER: S-EPMC6352526 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature