Determination of the Best planting date and cultivar for barley rainfed in Hamedan region using agronomic indices, yield and yield components

Javad hamzei ¹ ( Associate Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University )
afshar Azadbakht ² ( University of Mohaghegh Ardabili, Ardabil )
Mohsen Seyedi ³ ( Ph.D Crop Ecology, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran and The member of Young Researcher's and Elite Club, Hamedan Branch, Islamic Azad University, Hamedan, IRAN )

Submited date : 2017-10-09 Accepted date : 2018-04-28

Keywords: Grain yield, Rainfed, Yield components, Sowing date, Barely,

Abstract :

Selecting of the best sowing date is one of the most important management factors as affected growth and yield of crop under rainfed condition. The aim of this research was to study the effect of sowing dates of 6 Oct., 5 Nov. and 5 Dec., 2013 as S1, S2 and S3 treatments, respectively, on growth, yield and yield components of five barely cultivars (C1; Mahally as a control C2; Abidar C3; Valfagr C4;Bahman and C5; Makoyei). A factorial experiment was done based on randomized complete block design with three replications at the Agricultural Research Station of Bu- Ali Sina University. Traits of plan height, number of spike m-2, number of grain spike-1, 1000- seed weight, grain yield biological yield and harvest index (HI) were evaluted. Results showed that sowing date treatment had significant effects on all traits. Maximum grain yield (420.82 g m-2) was attained at S1 treatment. S3 treatment in comparison with S1 treatment decreased grain yield up to 46.5%. At the late sowing date (S3) due to exposure of plants with heat and drought of late season, grain yield of barley decreased. Also, maximum biological yield (906.33 g m-2) was achieved at sowing date of 6 Oct. (S1). Between barley cultivars for traits of grain and biological yields was different significant. Valfagr cultivar with average of 382.83 g m-2, produced the highest value of grain yield and this coutivar had significant difference with other cultivars. The interaction of sowing date × cultivar was significant only for grain number spike-1. Maximum and minimum values for grain number spike-1 were achieved at S1×C3 and S3×C1 treatments, respectively. In this study the most suitable sowing date and barley cultivar for Hamadan region was determine sowing date of 6 Oct. and Valfajr cultivar.