Microbial fertilizer and organic manure combined fertilization changes the rhizosphere microbiome and carotenoids of Citrus reticulata Blanco 'Orah'

Citrus reticulata Blanco 'Orah' is one of the most widely grown citrus varieties in southern China. It has been proven that microbial fertilizer and organic manure combined fertilization could improve the yields and appearances of 'Orah' fruits. However, details regarding the mechanisms underlying the effects of combined fertilization on the agronomic traits and microbiomes of plants still need to be elucidated. Thus, this study compared the rhizosphere microbiome and carotenoids of 'Orah' with (WYT group) and without (WYCK group) combined fertilization.