Improvement of Echinacea purpurea performance by integration of phosphorus with soil microorganisms under different irrigation regimes

Mahmood Attarzadeh, Hamidreza Balouchi, Majid Rajaie, Mohsen Movahhedi Dehnavi and Amin Salehi

Agricultural Water Management, 2019, vol. 221, issue C, 238-247

Abstract: Biological yield and physiological indices of Echinacea purpurea were investigated in a split plot field experiment and a randomized complete block design with three replicates and two harvests in 2016 and 2017. The main factor consisted of three irrigation regimes (irrigation after 25, 50 and 75% of available water depletion) and a sub-factor consisting of six different treatments of plant P (phosphorus) supply [control, 100% chemical P, 50% chemical P + AMF (mycorrhizal arbuscular fungus), AMF, 50% chemical P + PFB (Pseudomonas fluorescens bacterium) and PFB]. Results indicated that with increase in irrigation intervals, the rates of minimum and maximum fluorescence showed an increasing trend while the minimum fluorescence to maximum fluorescence ratio pursued a decreasing trend. In irrigation regime of 50% available water depletion, and combination of chemical P with AMF or PFB increased the amount of soluble sugar (26% and 17%) and proline (increase 39% and 22%) compared with control. The catalase activity in sole application of AMF was increased by 24% than the control test. Overall, the results of this study showed a successful coexistence of bio-fertilizers with Echinacea purpurea in improvement of photosynthetic indices, biological yields and water use efficiency.

Keywords: Biological yield; Phosphorus; Soil microorganisms; Sustainable production; Water management (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:221:y:2019:i:c:p:238-247

DOI: 10.1016/j.agwat.2019.04.022

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