Effect of Hydrogel, Paclobutrazol and Irrigation Intervals on Qualitative Characteristics of Turf grass (Lolium perenne cv. Barbal) in Mashhad Climate

علوم باغبانی

Article 6, Volume 25, Issue 3, February 2012   

Document Type: Research Article

DOI: 10.22067/jhorts4.v1390i0.11335

Authors

Morteza Aalami^* ; Ali Tehranifar; Gholamhossein Davarynejad; Yahya Selahvarzi

Ferdowsi university of Mashhad

Abstract

Abstract
Turf grass as a main grown cover plant has a unique place in green space planning. In order to study the effect of hydrogel and paclobutrazol on water requirement of turfgrasse (Lolium perenne L. Barbal) a factorial experiment based on a BRCD with 3 replication was conducted in the summer of 2010 in Mashhad. The factors under study were 4 levels of hydrogel (0, 3, 6, 9 gr/kg soil), 3 levels of irrigation (2day, 4day, 6day intervals) , 2 levels of paclobutrazol (control and preplanting seed treated, with 30mg/lit) on Lolium perenne. Results showed that the best density obtained using 6 g hydrogel and irrigation intervals of 2 days. The turf quality in soils with hydrogel application was better than the control. In general, the results showed that the plot with hydrogel had 33, 44 and 48% higher value in traits of color, density and chlorophyll content, respectively. Also the plot treated with paclobutrazol as compared with the control had 2, 7.5 and 11% more value in traits of density, cutting weight and root dry weight respectively. It is concluded that using 6 gr/kg hydrogel and paclobutrazol in soils with similar texture could reduce water consumption.

Keywords: Chlorophyll, Irrigation interal, Density, Electrolyte leakage