Agronomical, ecological and economical evaluation of sage - peppermint intercropping at different irrigation levels with application of drought stress modulating

Document Type : Research Paper

Authors

Ph.D. of Agrotechnology – Crop Ecology, Department of Plant Production and Genetics, Faculty of Agriculture, University of Maragheh

10.22034/saps.2023.54993.2974

Abstract

a field experiment performed to evaluate the effects of peppermint and sage intercropping with application of different fertilizer resources on the dry matter yield, essential oil content, and ecological indices under drought stress.
A field experiment was carried out as a split split plot based on a randomized complete block design (RCBD) with 36 treatments and three replications . The main factor was three irrigation regimes included 25 (MAD25), 50 (MAD50), and 75% (MAD75) maximum allowable depletion (MAD) percentage of the soil available water (SAW) as normal irrigation, mild and severe water stress, respectively. The sub-factor was different planting patterns included peppermint monoculture, sage monoculture, and intercropping of peppermint + sage and also sub-sub factor were application of different fertilizer sources including no‐fertilizer as control, TiO2 nanoparticles (100 mg L−1), arbuscular mycorrhiza fungi (AMF) inoculation, and integrative application of AMF and TiO2 (AMF + TiO2).
The maximum essential oil content of peppermint (1.51%) and sage (1.33%) was observed in intercropping plants with integrative application of AMF + TiO2. The essential oil content of peppermint and sage increased by 13.1 and 41.2% under mild stress in compared with normal irrigation, respectively. Also, the highest LER, K, AYL,, and monetary indices were achived in mild water stress with integrative application of AMF + TiO2.
it can be concluded that the application of AMF + TiO2 in intercropping of peppermint/sage could be suggested as a sustainable strategy to increasing the quantity and quality of essential oil of both plants under drought stress conditions.

Keywords

JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION

Articles in Press, Accepted Manuscript
Available Online from 20 July 2024

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