Impacts of PGPR, compost and biochar of Azolla on dry matter yield, nutrient uptake, physiological parameters and essential oil of <em>Rosmarinus officinalis</em> L.

Authors

  • Leila Sadegh Kasmaei Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Jafar Yasrebi Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Mehdi Zarei Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Abdolmajid Ronaghi Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Reza Ghasemi Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Mohammad Jamal Saharkhiz Department of Horticultural Sciences, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Zahra Ahmadabadi Department of Soil Science, Faculty of Agriculture, Shiraz University, Shiraz, Iran.
  • Ewald Schnug Julius Kühn-Institut (JKI) – Federal Research Centre for Cultivated Plants, Institute for Crop and Soil Science, Braunschweig, Germany.

DOI:

https://doi.org/10.5073/JfK.2019.01.01

Keywords:

Rosemary, Photosynthetic pigments, Carbohydrates, Flavonoides, Prolin, Essential oil

Abstract

Rosemary is one of the most important medicinal plants. In order to study the effect of plant growth promoting rhizobacteria (PGPR), Azolla compost and Azolla biochar on dry matter, nutrient uptake, physiological parameters and essential oil of rosemary, a greenhouse experiment was conducted in a completely randomized design with 6 replications. Treatments consisted of T1 (control), T2 (1% (1 g 100 g-1 dry soil) Azolla compost), T3 (1% Azolla biochar), T4 (PGPR (P. fluorescens)), T5 (1% compost + PGPR) and T6 (1% biochar + PGPR). Results indicated a significant enhancement of dry matter, nutrient uptake, photosynthetic pigments, carbohydrate, flavonoid and essential oil contents of rosemary influenced by organic fertilizers compared to control, particularly with co-appli­cation of PGPR + compost or biochar. Proline content decreased in all treatments in comparison with control. Results indicated positive impacts of PGPR, compost and boichar of Azolla on rosemary production by increasing nutrient uptake and protecting chlorophyll from degradation and enhancing its content in leaves.

DOI: 10.5073/JfK.2019.01.01, https://doi.org/10.5073/JfK.2019.01.01

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Published

2019-01-01

Issue

Vol. 71 No. 1 (2019)

Section

Original Article

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