Effects of Mycorrhiza, Zeolite and Superabsorbent on Growth and Primary Establishment of Agropyron desertorum in Mining Field (Case Study: Mashhad′s Shargh Cement Factory, Iran)
Authors
- Reyhaneh Azimi * 1
Abstract
The most important and sensitive level in the modification of rangelands
surrounding the mine is the initial seedling establishment of plants, which often faces
failure due to adverse environmental conditions, poor soil nutrients, disturbance of soil
different layers and its instability and unstable soil around the mines. New methods of
rangeland improvement using biological and non-biological materials (zeolite,
superabsorbent and mycorrhiza) and strategies may help to establish plants in the soil
around abandoned mines. This research aims to investigate the possibility of improving the
primary establishment and growth of Agropyron desertorum Schult (Fisch.Ex Link) in
mine areas infected with heavy metals. Initially, seeds were sown in paper pots. After two
months, pots were treated with Glomus intraradices, zeolite and superabsorbent along with
control. Pots were transplanted in the field in semi-arid lands of East Mashhad cement
factory using a completely randomized block design with four replicates in 2016. The
plants were irrigated only once for the establishment. Data were collected about
establishment rate, plant height, the percentage of mycorrhiza root inoculation and shoot,
root and total dry weight. The results showed that the application of mycorrhiza, zeolite
and superabsorbent increased plant establishment rate (50, 42 and 25%) and root dry
weight (62, 72 and 15%) higher than that for control. Application of the mycorrhiza and
zeolite treatments increased plant height (44 and 42%), aboveground dry biomass (51 and
61%) and total dry matter biomass (54 and 66%) higher than that for control treatment. The
results showed that mycorrhiza and zeolite treatments had the greatest effect on increasing
the initial establishment and improving the growth characteristics of A. desertorum. It was
concluded that using zeolite and Glomus intraradices may be effective method for the
initial establishment of plants in areas contaminated with heavy metals in the mining area
in the semi-arid regions.
