Effect of vermicompost and mycorrhiza on grain filling components and dry matter remobilization of triticale under rain fed and supplementary irrigation conditions

One of the important ways to reduce the effects of drought stress is the use of biofertilizers in triticale plant. The aim of this study was to investigate the effect of vermicompost and mycorrhiza on grain filling components and dry matter remobilization of triticale under rainfed and supplementary irrigation conditions.

Methods & Materials: 

An experiment as factorial was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh Ardabil during 2022. Average rainfall was about 300 mm that most rainfall concentrated between winter and spring. The experimental factors were included irrigation levels (no irrigation as rainfed, supplementary irrigation at heading and booting stages) and application of biofertilizers (no application biofertilizers, application of vermicompost, Mycorrhiza, both application vermicompost and Mycorrhiza).

The results showed that the application of mycorrhizae and vermicompost and supplementary irrigation at booting stage increased root weight and volume (53.6 and 45.49%, respectively), maximum of grain weight, grain filling rate and period (54.04, 19.84 and 21.99% respectively), grain yield (48.66%), current photosynthesis (109.68%) and contribution of its in grain yield (41.14%) and decreased of dry matter remobilization from shoot and stem and contribution of them in grain yield (32.72, 33.55, 97.14 and 98.49% respectively) in comparison with no application of biofertilizers under rainfed condition.

It seems that the application of mycorrhizae and vermicompost and supplementary irrigation at booting stage can increase the yield of triticale in rainfed condition due to improving photosynthesis and grain filling components.