Growth, yield index, and photosynthesis traits of sweet pepper grown in vermicompost inoculated with Arbuscular mycorrhiza

ABSTRACT- The aim of this study was to investigate the effects of “Arbuscular mycorrhizal fungi” (AM fungi) density and different growing media on the growth, photosynthesis parameters and yield of sweet pepper under greenhouse conditions. The experiment was conducted as a factorial plan based on control randomized design (CRD ( by using three growing media, Perlite (PR) and cocopeat (Co) (PR۵۰:Co۵۰ V:V) (C), PR۲۵:Co۵۰: vermicompost (V) ۲۵ (C+V۲۵) and PR۲۵:Co۲۵: V۵۰ (C+V۵۰), and three levels of AM fungi inoculation (۰, ۱۰۰۰ and ۲۰۰۰ spores) with three replications. Results indicated that AM fungi inoculation and mixture of vermicompost increased shoot and root fresh weights,Total Suspended Solids (TSS), fruit fresh and dry weights in the C+V۵۰ compared to other treatments. Fruit yield increased more than ۱۰۰ and ۹۴.۹۵% with AM-fungi inoculation with ۲۰۰۰ spores at C+V۲۵ and V۵۰ treatments, respectively. Mycorrhiza dependency decreased with high application rate of vermicompost, and vermicompost dependency was the highest in non-inoculated plants. With AM-fungi inoculations, the chlorophyll level (SPAD values) was increased in C+V۲۵ by ۱۰۰%.  Photosynthesis rate was increased in C+V۲۵×M۱ significantly compared to other treatments. Nitrogen, phosphorus, and potassium concentrations significantly increased by mycorrhiza inoculation in the high vermicompost ratio.

کلیدواژه ها:

Keywords: ، Mycorrhiza dependency ، Nutrient concentration ، Photosynthesis rate ، Yield